feat(focus.point): use exponential instead of linear scoring

Linear scoring, by design, gives all records the same score past a certain point. This has the disadvantage that identical records that are very far away cannot be sorted by distance. By using exponential scoring, we can achieve decent sorting of even very far away records. This is very helpful for cities and postalcodes. Connects #1206
pelias · Nov 8, 2018 · 84dd9b6 · 84dd9b6
1 parent 963eece
commit 84dd9b6
Show file tree

Hide file tree

Showing 10 changed files with 10 additions and 10 deletions.
diff --git a/query/autocomplete_defaults.js b/query/autocomplete_defaults.js
@@ -26,7 +26,7 @@ module.exports = _.merge({}, peliasQuery.defaults, {
   'phrase:boost': 1,
   'phrase:slop': 3,
 
-  'focus:function': 'linear',
+  'focus:function': 'exp',
   'focus:offset': '0km',
   'focus:scale': '250km',
   'focus:decay': 0.5,

diff --git a/query/search_defaults.js b/query/search_defaults.js
@@ -26,7 +26,7 @@ module.exports = _.merge({}, peliasQuery.defaults, {
   'phrase:boost': 1,
   'phrase:slop': 2,
 
-  'focus:function': 'linear',
+  'focus:function': 'exp',
   'focus:offset': '0km',
   'focus:scale': '50km',
   'focus:decay': 0.5,

diff --git a/test/unit/fixture/autocomplete_linguistic_focus.js b/test/unit/fixture/autocomplete_linguistic_focus.js
@@ -32,7 +32,7 @@ module.exports = {
             }
           },
           'functions': [{
-            'linear': {
+            'exp': {
               'center_point': {
                 'origin': {
                   'lat': 29.49136,

diff --git a/test/unit/fixture/autocomplete_linguistic_focus_null_island.js b/test/unit/fixture/autocomplete_linguistic_focus_null_island.js
@@ -32,7 +32,7 @@ module.exports = {
             }
           },
           'functions': [{
-            'linear': {
+            'exp': {
               'center_point': {
                 'origin': {
                   'lat': 0,

diff --git a/test/unit/fixture/search_linguistic_focus.js b/test/unit/fixture/search_linguistic_focus.js
@@ -44,7 +44,7 @@ module.exports = {
       'functions': [
         {
           'weight': 2,
-          'linear': {
+          'exp': {
             'center_point': {
               'origin': {
                 'lat': 29.49136,

diff --git a/test/unit/fixture/search_linguistic_focus_bbox.js b/test/unit/fixture/search_linguistic_focus_bbox.js
@@ -55,7 +55,7 @@ module.exports = {
       'functions': [
         {
           'weight': 2,
-          'linear': {
+          'exp': {
             'center_point': {
               'origin': {
                 'lat': 29.49136,

diff --git a/test/unit/fixture/search_linguistic_focus_bbox_original.js b/test/unit/fixture/search_linguistic_focus_bbox_original.js
@@ -34,7 +34,7 @@ module.exports = {
             }
           },
           'functions': [{
-            'linear': {
+            'exp': {
               'center_point': {
                 'origin': {
                   'lat': 29.49136,

diff --git a/test/unit/fixture/search_linguistic_focus_null_island.js b/test/unit/fixture/search_linguistic_focus_null_island.js
@@ -44,7 +44,7 @@ module.exports = {
       'functions': [
         {
           'weight': 2,
-          'linear': {
+          'exp': {
             'center_point': {
               'origin': {
                 'lat': 0,

diff --git a/test/unit/fixture/search_linguistic_focus_null_island_original.js b/test/unit/fixture/search_linguistic_focus_null_island_original.js
@@ -34,7 +34,7 @@ module.exports = {
             }
           },
           'functions': [{
-            'linear': {
+            'exp': {
               'center_point': {
                 'origin': {
                   'lat': 0,

diff --git a/test/unit/fixture/search_linguistic_focus_original.js b/test/unit/fixture/search_linguistic_focus_original.js
@@ -34,7 +34,7 @@ module.exports = {
             }
           },
           'functions': [{
-            'linear': {
+            'exp': {
               'center_point': {
                 'origin': {
                   'lat': 29.49136,