From 38b209fc7fa496dccc7e481d7b25c00d297726c0 Mon Sep 17 00:00:00 2001
From: Michael Ekstrand <md@ekstrandom.net>
Date: Sat, 2 Mar 2024 18:46:33 -0500
Subject: [PATCH] add source headers

---
 conftest.py                      | 6 ++++++
 docs/conf.py                     | 6 ++++++
 lenskit/__init__.py              | 6 ++++++
 lenskit/algorithms/__init__.py   | 6 ++++++
 lenskit/algorithms/als.py        | 6 ++++++
 lenskit/algorithms/basic.py      | 6 ++++++
 lenskit/algorithms/bias.py       | 6 ++++++
 lenskit/algorithms/funksvd.py    | 6 ++++++
 lenskit/algorithms/item_knn.py   | 6 ++++++
 lenskit/algorithms/mf_common.py  | 6 ++++++
 lenskit/algorithms/ranking.py    | 6 ++++++
 lenskit/algorithms/svd.py        | 6 ++++++
 lenskit/algorithms/user_knn.py   | 6 ++++++
 lenskit/batch/__init__.py        | 6 ++++++
 lenskit/batch/_predict.py        | 6 ++++++
 lenskit/batch/_recommend.py      | 6 ++++++
 lenskit/batch/_train.py          | 6 ++++++
 lenskit/crossfold.py             | 6 ++++++
 lenskit/data/__init__.py         | 6 ++++++
 lenskit/data/matrix.py           | 6 ++++++
 lenskit/data/sampling.py         | 6 ++++++
 lenskit/datasets/__init__.py     | 6 ++++++
 lenskit/datasets/fetch.py        | 6 ++++++
 lenskit/datasets/movielens.py    | 6 ++++++
 lenskit/math/__init__.py         | 6 ++++++
 lenskit/math/solve.py            | 6 ++++++
 lenskit/metrics/__init__.py      | 6 ++++++
 lenskit/metrics/predict.py       | 6 ++++++
 lenskit/metrics/topn.py          | 6 ++++++
 lenskit/sharing/__init__.py      | 6 ++++++
 lenskit/sharing/binpickle.py     | 6 ++++++
 lenskit/sharing/shm.py           | 6 ++++++
 lenskit/topn.py                  | 6 ++++++
 lenskit/util/__init__.py         | 6 ++++++
 lenskit/util/accum.py            | 6 ++++++
 lenskit/util/array.py            | 6 ++++++
 lenskit/util/debug.py            | 6 ++++++
 lenskit/util/log.py              | 6 ++++++
 lenskit/util/parallel.py         | 6 ++++++
 lenskit/util/random.py           | 6 ++++++
 lenskit/util/test.py             | 6 ++++++
 lenskit/util/timing.py           | 6 ++++++
 tasks.py                         | 6 ++++++
 tests/test_als_explicit.py       | 6 ++++++
 tests/test_als_implicit.py       | 6 ++++++
 tests/test_batch_predict.py      | 6 ++++++
 tests/test_batch_recommend.py    | 6 ++++++
 tests/test_batch_train.py        | 6 ++++++
 tests/test_bias.py               | 6 ++++++
 tests/test_candidate_selector.py | 6 ++++++
 tests/test_crossfold.py          | 6 ++++++
 tests/test_env_detect.py         | 6 ++++++
 tests/test_fallback.py           | 6 ++++++
 tests/test_funksvd.py            | 6 ++++++
 tests/test_knn_item_item.py      | 6 ++++++
 tests/test_knn_user_user.py      | 6 ++++++
 tests/test_math_solve.py         | 6 ++++++
 tests/test_matrix.py             | 6 ++++++
 tests/test_ml20m.py              | 6 ++++++
 tests/test_parallel.py           | 6 ++++++
 tests/test_popular.py            | 6 ++++++
 tests/test_predict_metrics.py    | 6 ++++++
 tests/test_rerank.py             | 6 ++++++
 tests/test_sharing.py            | 6 ++++++
 tests/test_svd.py                | 6 ++++++
 tests/test_topn_analysis.py      | 6 ++++++
 tests/test_topn_hit.py           | 6 ++++++
 tests/test_topn_mrr.py           | 6 ++++++
 tests/test_topn_ndcg.py          | 6 ++++++
 tests/test_topn_precision.py     | 6 ++++++
 tests/test_topn_rbp.py           | 6 ++++++
 tests/test_topn_recall.py        | 6 ++++++
 tests/test_topn_recs.py          | 6 ++++++
 tests/test_topn_utils.py         | 6 ++++++
 tests/test_util.py               | 6 ++++++
 tests/test_util_accum.py         | 6 ++++++
 tests/test_util_algos.py         | 6 ++++++
 utils/all-power.py               | 6 ++++++
 utils/rla-perf.py                | 6 ++++++
 79 files changed, 474 insertions(+)

diff --git a/conftest.py b/conftest.py
index c94a921a9..f3a00a4fe 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 from pytest import fixture
 
diff --git a/docs/conf.py b/docs/conf.py
index 9175e9b42..4a05e78bf 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import os
 import sys
 sys.path.insert(0, os.path.abspath(".."))
diff --git a/lenskit/__init__.py b/lenskit/__init__.py
index 672546f93..c43368426 100644
--- a/lenskit/__init__.py
+++ b/lenskit/__init__.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Toolkit for recommender systems research, teaching, and more.
 """
diff --git a/lenskit/algorithms/__init__.py b/lenskit/algorithms/__init__.py
index 5c57cbb66..d503ac438 100644
--- a/lenskit/algorithms/__init__.py
+++ b/lenskit/algorithms/__init__.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 LensKit algorithms.
 
diff --git a/lenskit/algorithms/als.py b/lenskit/algorithms/als.py
index 002525ac1..c3b7790ea 100644
--- a/lenskit/algorithms/als.py
+++ b/lenskit/algorithms/als.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 from collections import namedtuple
 
diff --git a/lenskit/algorithms/basic.py b/lenskit/algorithms/basic.py
index 3ffec86bc..d66f0ffc3 100644
--- a/lenskit/algorithms/basic.py
+++ b/lenskit/algorithms/basic.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Basic utility algorithms and combiners.
 """
diff --git a/lenskit/algorithms/bias.py b/lenskit/algorithms/bias.py
index 09233a6a3..4a755097f 100644
--- a/lenskit/algorithms/bias.py
+++ b/lenskit/algorithms/bias.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 
 import pandas as pd
diff --git a/lenskit/algorithms/funksvd.py b/lenskit/algorithms/funksvd.py
index 7f60cc5ca..410cd9315 100644
--- a/lenskit/algorithms/funksvd.py
+++ b/lenskit/algorithms/funksvd.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 FunkSVD (biased MF).
 """
diff --git a/lenskit/algorithms/item_knn.py b/lenskit/algorithms/item_knn.py
index bca7616bb..e377175dd 100644
--- a/lenskit/algorithms/item_knn.py
+++ b/lenskit/algorithms/item_knn.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Item-based k-NN collaborative filtering.
 """
diff --git a/lenskit/algorithms/mf_common.py b/lenskit/algorithms/mf_common.py
index d7dcec646..8919b9fca 100644
--- a/lenskit/algorithms/mf_common.py
+++ b/lenskit/algorithms/mf_common.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Common utilities & implementations for matrix factorization.
 """
diff --git a/lenskit/algorithms/ranking.py b/lenskit/algorithms/ranking.py
index 7d8b3e515..a5ae9167d 100644
--- a/lenskit/algorithms/ranking.py
+++ b/lenskit/algorithms/ranking.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Algorithms to rank items based on scores.
 """
diff --git a/lenskit/algorithms/svd.py b/lenskit/algorithms/svd.py
index 26ca725d7..622f90747 100644
--- a/lenskit/algorithms/svd.py
+++ b/lenskit/algorithms/svd.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 
 import pandas as pd
diff --git a/lenskit/algorithms/user_knn.py b/lenskit/algorithms/user_knn.py
index 2793ab06f..e8e7dc104 100644
--- a/lenskit/algorithms/user_knn.py
+++ b/lenskit/algorithms/user_knn.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 User-based k-NN collaborative filtering.
 """
diff --git a/lenskit/batch/__init__.py b/lenskit/batch/__init__.py
index 310d70573..bbe7a1c07 100644
--- a/lenskit/batch/__init__.py
+++ b/lenskit/batch/__init__.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Batch-run predictors and recommenders for evaluation.
 """
diff --git a/lenskit/batch/_predict.py b/lenskit/batch/_predict.py
index e0e93cae6..dd780b83c 100644
--- a/lenskit/batch/_predict.py
+++ b/lenskit/batch/_predict.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import warnings
 
diff --git a/lenskit/batch/_recommend.py b/lenskit/batch/_recommend.py
index 4d2667346..aa50924bf 100644
--- a/lenskit/batch/_recommend.py
+++ b/lenskit/batch/_recommend.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import warnings
 
diff --git a/lenskit/batch/_train.py b/lenskit/batch/_train.py
index df6c78b40..346b96e8b 100644
--- a/lenskit/batch/_train.py
+++ b/lenskit/batch/_train.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 
 from lenskit.sharing import persist, persist_binpickle
diff --git a/lenskit/crossfold.py b/lenskit/crossfold.py
index 353d1892e..0afa94c84 100644
--- a/lenskit/crossfold.py
+++ b/lenskit/crossfold.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Data set cross-folding.
 """
diff --git a/lenskit/data/__init__.py b/lenskit/data/__init__.py
index 81ff22674..bdf84d83b 100644
--- a/lenskit/data/__init__.py
+++ b/lenskit/data/__init__.py
@@ -1 +1,7 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from .matrix import RatingMatrix, sparse_ratings  # noqa: F401
diff --git a/lenskit/data/matrix.py b/lenskit/data/matrix.py
index 04567ffed..fed054ed3 100644
--- a/lenskit/data/matrix.py
+++ b/lenskit/data/matrix.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Data manipulation routines.
 """
diff --git a/lenskit/data/sampling.py b/lenskit/data/sampling.py
index e489b5a5a..a8106cf23 100644
--- a/lenskit/data/sampling.py
+++ b/lenskit/data/sampling.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import numpy as np
 from numba import njit
 
diff --git a/lenskit/datasets/__init__.py b/lenskit/datasets/__init__.py
index f2fb2a9dc..8171dfcf8 100644
--- a/lenskit/datasets/__init__.py
+++ b/lenskit/datasets/__init__.py
@@ -1 +1,7 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from .movielens import *  # noqa: F403
diff --git a/lenskit/datasets/fetch.py b/lenskit/datasets/fetch.py
index ed8299bc8..68399904d 100644
--- a/lenskit/datasets/fetch.py
+++ b/lenskit/datasets/fetch.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import sys
 from zipfile import ZipFile
 from urllib.request import urlopen
diff --git a/lenskit/datasets/movielens.py b/lenskit/datasets/movielens.py
index 5ba34556e..dd61c9ce6 100644
--- a/lenskit/datasets/movielens.py
+++ b/lenskit/datasets/movielens.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Code to import commonly-used RecSys data sets into LensKit-compatible data frames.
 """
diff --git a/lenskit/math/__init__.py b/lenskit/math/__init__.py
index 8c629602f..ac65def50 100644
--- a/lenskit/math/__init__.py
+++ b/lenskit/math/__init__.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Mathematical helper routines.
 """
diff --git a/lenskit/math/solve.py b/lenskit/math/solve.py
index 8f12ec364..75311732b 100644
--- a/lenskit/math/solve.py
+++ b/lenskit/math/solve.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Efficient solver routines.
 """
diff --git a/lenskit/metrics/__init__.py b/lenskit/metrics/__init__.py
index 27c464ae0..3238384d6 100644
--- a/lenskit/metrics/__init__.py
+++ b/lenskit/metrics/__init__.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Metrics for evaluating recommendations.
 """
diff --git a/lenskit/metrics/predict.py b/lenskit/metrics/predict.py
index 9f245b6dc..479da324d 100644
--- a/lenskit/metrics/predict.py
+++ b/lenskit/metrics/predict.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Prediction accuracy metrics.
 """
diff --git a/lenskit/metrics/topn.py b/lenskit/metrics/topn.py
index 5f66380de..f6f9988f4 100644
--- a/lenskit/metrics/topn.py
+++ b/lenskit/metrics/topn.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Top-N evaluation metrics.
 """
diff --git a/lenskit/sharing/__init__.py b/lenskit/sharing/__init__.py
index eb17ac946..9d795c92e 100644
--- a/lenskit/sharing/__init__.py
+++ b/lenskit/sharing/__init__.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Support for sharing and saving models and data structures.
 """
diff --git a/lenskit/sharing/binpickle.py b/lenskit/sharing/binpickle.py
index c3d850761..a17a72362 100644
--- a/lenskit/sharing/binpickle.py
+++ b/lenskit/sharing/binpickle.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import os
 import pathlib
 import tempfile
diff --git a/lenskit/sharing/shm.py b/lenskit/sharing/shm.py
index 1409049b2..ecdc41df8 100644
--- a/lenskit/sharing/shm.py
+++ b/lenskit/sharing/shm.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import sys
 import logging
 import pickle
diff --git a/lenskit/topn.py b/lenskit/topn.py
index 0ca22072b..6223b45d0 100644
--- a/lenskit/topn.py
+++ b/lenskit/topn.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import functools as ft
 
diff --git a/lenskit/util/__init__.py b/lenskit/util/__init__.py
index 88f1466f0..01c14f704 100644
--- a/lenskit/util/__init__.py
+++ b/lenskit/util/__init__.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Miscellaneous utility functions.
 """
diff --git a/lenskit/util/accum.py b/lenskit/util/accum.py
index 060da81ae..1cc419cc5 100644
--- a/lenskit/util/accum.py
+++ b/lenskit/util/accum.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Accumulator support.
 """
diff --git a/lenskit/util/array.py b/lenskit/util/array.py
index faf2979a9..322e19010 100644
--- a/lenskit/util/array.py
+++ b/lenskit/util/array.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Array utilities.
 """
diff --git a/lenskit/util/debug.py b/lenskit/util/debug.py
index a34a83d2f..dd5d1ff42 100644
--- a/lenskit/util/debug.py
+++ b/lenskit/util/debug.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Debugging utility code.  Also runnable as a Python command.
 
diff --git a/lenskit/util/log.py b/lenskit/util/log.py
index 05b05672a..dade6fc27 100644
--- a/lenskit/util/log.py
+++ b/lenskit/util/log.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Logging utilities.
 """
diff --git a/lenskit/util/parallel.py b/lenskit/util/parallel.py
index 20f7823fa..f54c95278 100644
--- a/lenskit/util/parallel.py
+++ b/lenskit/util/parallel.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Utilities for parallel processing.
 """
diff --git a/lenskit/util/random.py b/lenskit/util/random.py
index b46cbd706..f27416575 100644
--- a/lenskit/util/random.py
+++ b/lenskit/util/random.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Utilities to manage randomness in LensKit and LensKit experiments.
 """
diff --git a/lenskit/util/test.py b/lenskit/util/test.py
index e008c0dae..703a7c940 100644
--- a/lenskit/util/test.py
+++ b/lenskit/util/test.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Test utilities for LKPY tests.
 """
diff --git a/lenskit/util/timing.py b/lenskit/util/timing.py
index 760dbd610..5e1dd5346 100644
--- a/lenskit/util/timing.py
+++ b/lenskit/util/timing.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Timing support
 """
diff --git a/tasks.py b/tasks.py
index 608021e3a..2a219b927 100644
--- a/tasks.py
+++ b/tasks.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lkbuild.tasks import *
 
 
diff --git a/tests/test_als_explicit.py b/tests/test_als_explicit.py
index 4cce09e5f..66177c536 100644
--- a/tests/test_als_explicit.py
+++ b/tests/test_als_explicit.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import pickle
 
diff --git a/tests/test_als_implicit.py b/tests/test_als_implicit.py
index 9ff0b8384..d291ac8de 100644
--- a/tests/test_als_implicit.py
+++ b/tests/test_als_implicit.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 
 from lenskit import util
diff --git a/tests/test_batch_predict.py b/tests/test_batch_predict.py
index e176a6370..68ab5f4cb 100644
--- a/tests/test_batch_predict.py
+++ b/tests/test_batch_predict.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import pytest
 
 import logging
diff --git a/tests/test_batch_recommend.py b/tests/test_batch_recommend.py
index 2d8a3d08b..6773c36f8 100644
--- a/tests/test_batch_recommend.py
+++ b/tests/test_batch_recommend.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import pytest
 
 from collections import namedtuple
diff --git a/tests/test_batch_train.py b/tests/test_batch_train.py
index fbd1a4ca5..1be613f6e 100644
--- a/tests/test_batch_train.py
+++ b/tests/test_batch_train.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.batch import train_isolated
 from lenskit.util.test import ml_test
 from lenskit.algorithms import Recommender
diff --git a/tests/test_bias.py b/tests/test_bias.py
index 275c71c26..50af8106a 100644
--- a/tests/test_bias.py
+++ b/tests/test_bias.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms.bias import Bias
 from lenskit import util as lku
 
diff --git a/tests/test_candidate_selector.py b/tests/test_candidate_selector.py
index 0d614a0b2..99acbb4b8 100644
--- a/tests/test_candidate_selector.py
+++ b/tests/test_candidate_selector.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms import basic
 import lenskit.util.test as lktu
 
diff --git a/tests/test_crossfold.py b/tests/test_crossfold.py
index aa660f2c3..4a1b38f48 100644
--- a/tests/test_crossfold.py
+++ b/tests/test_crossfold.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import itertools as it
 import functools as ft
 import pytest
diff --git a/tests/test_env_detect.py b/tests/test_env_detect.py
index 267307c19..a46e77bc6 100644
--- a/tests/test_env_detect.py
+++ b/tests/test_env_detect.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import numba
 
 import lenskit.util.debug as d
diff --git a/tests/test_fallback.py b/tests/test_fallback.py
index b2644b866..97e4f1104 100644
--- a/tests/test_fallback.py
+++ b/tests/test_fallback.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms import basic
 from lenskit.algorithms.bias import Bias
 from lenskit import util as lku
diff --git a/tests/test_funksvd.py b/tests/test_funksvd.py
index ffcc2ac7f..f0ffcb33e 100644
--- a/tests/test_funksvd.py
+++ b/tests/test_funksvd.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import pickle
 from pathlib import Path
diff --git a/tests/test_knn_item_item.py b/tests/test_knn_item_item.py
index e4a3f6097..bbd83a1aa 100644
--- a/tests/test_knn_item_item.py
+++ b/tests/test_knn_item_item.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit import ConfigWarning, DataWarning
 from lenskit.algorithms import Recommender
 from lenskit.algorithms.basic import Fallback
diff --git a/tests/test_knn_user_user.py b/tests/test_knn_user_user.py
index 7fd2c90a3..c3a18f772 100644
--- a/tests/test_knn_user_user.py
+++ b/tests/test_knn_user_user.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms import Recommender
 import lenskit.algorithms.user_knn as knn
 from lenskit.util import clone
diff --git a/tests/test_math_solve.py b/tests/test_math_solve.py
index cac54caa0..5b9778ff4 100644
--- a/tests/test_math_solve.py
+++ b/tests/test_math_solve.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import numpy as np
 import scipy.linalg as sla
diff --git a/tests/test_matrix.py b/tests/test_matrix.py
index 408d7b3b3..8a447b8f8 100644
--- a/tests/test_matrix.py
+++ b/tests/test_matrix.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import scipy.sparse as sps
 import pandas as pd
 
diff --git a/tests/test_ml20m.py b/tests/test_ml20m.py
index 95b7f0680..6e277e1e2 100644
--- a/tests/test_ml20m.py
+++ b/tests/test_ml20m.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Tests on the ML-20M data set.
 """
diff --git a/tests/test_parallel.py b/tests/test_parallel.py
index 35b8285fd..71285c862 100644
--- a/tests/test_parallel.py
+++ b/tests/test_parallel.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import os
 import logging
 import multiprocessing as mp
diff --git a/tests/test_popular.py b/tests/test_popular.py
index 790bd98f5..1a85bf661 100644
--- a/tests/test_popular.py
+++ b/tests/test_popular.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms import basic
 
 import pandas as pd
diff --git a/tests/test_predict_metrics.py b/tests/test_predict_metrics.py
index 461f250bc..5cac1a7ee 100644
--- a/tests/test_predict_metrics.py
+++ b/tests/test_predict_metrics.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import numpy as np
 import pandas as pd
 import os.path
diff --git a/tests/test_rerank.py b/tests/test_rerank.py
index 004b08f9c..de21a61c4 100644
--- a/tests/test_rerank.py
+++ b/tests/test_rerank.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import lenskit.util.test as lktu
 from lenskit.algorithms.basic import PopScore
 from lenskit.algorithms.bias import Bias
diff --git a/tests/test_sharing.py b/tests/test_sharing.py
index 8e1033029..1002770f6 100644
--- a/tests/test_sharing.py
+++ b/tests/test_sharing.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import os
 
 import pickle
diff --git a/tests/test_svd.py b/tests/test_svd.py
index ee4d7653b..a297e9591 100644
--- a/tests/test_svd.py
+++ b/tests/test_svd.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import pickle
 
diff --git a/tests/test_topn_analysis.py b/tests/test_topn_analysis.py
index 1253b8b0e..62277dc1d 100644
--- a/tests/test_topn_analysis.py
+++ b/tests/test_topn_analysis.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from pathlib import Path
 import logging
 import numpy as np
diff --git a/tests/test_topn_hit.py b/tests/test_topn_hit.py
index b664023f6..34e568c82 100644
--- a/tests/test_topn_hit.py
+++ b/tests/test_topn_hit.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import numpy as np
 import pandas as pd
diff --git a/tests/test_topn_mrr.py b/tests/test_topn_mrr.py
index bb2b73843..17d5cde8e 100644
--- a/tests/test_topn_mrr.py
+++ b/tests/test_topn_mrr.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import numpy as np
 import pandas as pd
 
diff --git a/tests/test_topn_ndcg.py b/tests/test_topn_ndcg.py
index 830a4b8b6..804f78f93 100644
--- a/tests/test_topn_ndcg.py
+++ b/tests/test_topn_ndcg.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import numpy as np
 import pandas as pd
 
diff --git a/tests/test_topn_precision.py b/tests/test_topn_precision.py
index 62df2bc1a..7e08e67ba 100644
--- a/tests/test_topn_precision.py
+++ b/tests/test_topn_precision.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import numpy as np
 import pandas as pd
 
diff --git a/tests/test_topn_rbp.py b/tests/test_topn_rbp.py
index babe76dc3..304d7ea4f 100644
--- a/tests/test_topn_rbp.py
+++ b/tests/test_topn_rbp.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import numpy as np
 import pandas as pd
diff --git a/tests/test_topn_recall.py b/tests/test_topn_recall.py
index 612acdf08..fc52d83d4 100644
--- a/tests/test_topn_recall.py
+++ b/tests/test_topn_recall.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import logging
 import numpy as np
 import pandas as pd
diff --git a/tests/test_topn_recs.py b/tests/test_topn_recs.py
index e570f8c1f..09d12eeef 100644
--- a/tests/test_topn_recs.py
+++ b/tests/test_topn_recs.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms import basic
 from lenskit.algorithms import bias
 
diff --git a/tests/test_topn_utils.py b/tests/test_topn_utils.py
index 25257c5df..3e0e875a2 100644
--- a/tests/test_topn_utils.py
+++ b/tests/test_topn_utils.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms import CandidateSelector
 
 import pandas as pd
diff --git a/tests/test_util.py b/tests/test_util.py
index 6f134b0a2..18bf34630 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import time
 import re
 import pathlib
diff --git a/tests/test_util_accum.py b/tests/test_util_accum.py
index 48a876f8f..8e6cd4f35 100644
--- a/tests/test_util_accum.py
+++ b/tests/test_util_accum.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 import numpy as np
 
 from lenskit.util.accum import kvp_minheap_insert, kvp_minheap_sort
diff --git a/tests/test_util_algos.py b/tests/test_util_algos.py
index 8437ebd35..1bf47c9b5 100644
--- a/tests/test_util_algos.py
+++ b/tests/test_util_algos.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 from lenskit.algorithms import basic
 
 import pandas as pd
diff --git a/utils/all-power.py b/utils/all-power.py
index 7854a1779..6185b6ff7 100644
--- a/utils/all-power.py
+++ b/utils/all-power.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Load all power consumption.
 
diff --git a/utils/rla-perf.py b/utils/rla-perf.py
index e3d43c43f..a248473ad 100644
--- a/utils/rla-perf.py
+++ b/utils/rla-perf.py
@@ -1,3 +1,9 @@
+# This file is part of LensKit.
+# Copyright (C) 2018-2023 Boise State University
+# Copyright (C) 2023-2024 Drexel University
+# Licensed under the MIT license, see LICENSE.md for details.
+# SPDX-License-Identifier: MIT
+
 """
 Little script to test RLA performance.