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Improve typing #426

Merged
merged 6 commits into from
Dec 20, 2023
Merged

Improve typing #426

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1043b9f
Specify model type and mark it private and readonly.
amitmarkel Dec 19, 2023
228e297
Move the baseScope variable that is a constant to be class-level and …
amitmarkel Dec 19, 2023
9305a53
Bail-out earlier on the score summation loop to improve performance.
amitmarkel Dec 19, 2023
25d73db
Merge branch 'google:main' into improve
amitmarkel Dec 20, 2023
ca6501b
Revert "Bail-out earlier on the score summation loop to improve perfo…
amitmarkel Dec 20, 2023
6e0f63e
Add comment that score items in models may be negative.
amitmarkel Dec 20, 2023
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18 changes: 10 additions & 8 deletions javascript/src/parser.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,8 @@
*/
export class Parser {
/** BudouX model data */
model;
private readonly model: Map<string, Map<string, number>>;
private readonly baseScore: number;

/**
* Constructs a BudouX parser.
Expand All @@ -29,6 +30,12 @@ export class Parser {
this.model = new Map(
Object.entries(model).map(([k, v]) => [k, new Map(Object.entries(v))])
);
this.baseScore =
-0.5 *
[...this.model.values()]
.map(group => [...group.values()])
.flat()
.reduce((prev, curr) => prev + curr, 0);
}

/**
Expand Down Expand Up @@ -58,15 +65,10 @@ export class Parser {
*/
parseBoundaries(sentence: string): number[] {
const result = [];
const baseScore =
-0.5 *
[...this.model.values()]
.map(group => [...group.values()])
.flat()
.reduce((prev, curr) => prev + curr, 0);

for (let i = 1; i < sentence.length; i++) {
let score = baseScore;
let score = this.baseScore;
// NOTE: Score values in models may be negative.
/* eslint-disable */
score += this.model.get('UW1')?.get(sentence.substring(i - 3, i - 2)) || 0;
score += this.model.get('UW2')?.get(sentence.substring(i - 2, i - 1)) || 0;
Expand Down
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