#36: Update rules for better accuracy

.gitignore

@@ -2,3 +2,4 @@ node_modules
 web-ext-artifacts
 build
 gecko.log
+.DS_Store

src/fathom_coefficients.json

@@ -1,9 +1,16 @@
 {
   "largerImageCoeff": 3,
-  "largerFontSizeCoeff": 1,
+  "largerFontSizePriceCoeff": 1,
+  "largerFontSizeTitleCoeff": 1,
   "hasDollarSignCoeff": 3,
-  "hasTitleInIDCoeff": 10,
-  "hasTitleInClassNameCoeff": 5,
-  "isHiddenCoeff": -100,
-  "isHeaderElementCoeff": 10
+  "hasFeatureNameInIDTitleCoeff": 10,
+  "hasFeatureNameInIDPriceCoeff": 10,
+  "hasFeatureNameInClassNameTitleCoeff": 5,
+  "hasFeatureNameInClassNamePriceCoeff": 5,
+  "isAboveTheFoldPriceCoeff": 30,
+  "isAboveTheFoldImageCoeff": 15,
+  "isAboveTheFoldTitleCoeff": 15,
+  "isHeaderElementCoeff": 10,
+  "optimalPriceStringLengthCoeff": 5,
+  "closestToImageCoeff": 1
 }

src/fathom_extraction.js

@@ -13,12 +13,19 @@
 import productRuleset from 'commerce/fathom_ruleset';
 import {
   largerImageCoeff,
-  largerFontSizeCoeff,
+  largerFontSizePriceCoeff,
+  largerFontSizeTitleCoeff,
   hasDollarSignCoeff,
-  hasTitleInIDCoeff,
-  hasTitleInClassNameCoeff,
-  isHiddenCoeff,
+  hasFeatureNameInIDTitleCoeff,
+  hasFeatureNameInIDPriceCoeff,
+  hasFeatureNameInClassNameTitleCoeff,
+  hasFeatureNameInClassNamePriceCoeff,
+  isAboveTheFoldPriceCoeff,
+  isAboveTheFoldImageCoeff,
+  isAboveTheFoldTitleCoeff,
   isHeaderElementCoeff,
+  optimalPriceStringLengthCoeff,
+  closestToImageCoeff,
 } from 'commerce/fathom_coefficients.json';
 
 const PRODUCT_FEATURES = ['title', 'price', 'image'];
@@ -34,12 +41,19 @@ function runRuleset(doc) {
   for (const feature of PRODUCT_FEATURES) {
     let fnodesList = rules([
       largerImageCoeff,
-      largerFontSizeCoeff,
+      largerFontSizePriceCoeff,
+      largerFontSizeTitleCoeff,
       hasDollarSignCoeff,
-      hasTitleInIDCoeff,
-      hasTitleInClassNameCoeff,
-      isHiddenCoeff,
+      hasFeatureNameInIDTitleCoeff,
+      hasFeatureNameInIDPriceCoeff,
+      hasFeatureNameInClassNameTitleCoeff,
+      hasFeatureNameInClassNamePriceCoeff,
+      isAboveTheFoldPriceCoeff,
+      isAboveTheFoldImageCoeff,
+      isAboveTheFoldTitleCoeff,
       isHeaderElementCoeff,
+      optimalPriceStringLengthCoeff,
+      closestToImageCoeff,
     ]).against(doc).get(`${feature}`);
     fnodesList = fnodesList.filter(fnode => fnode.scoreFor(`${feature}ish`) >= SCORE_THRESHOLD);
     // It is possible for multiple elements to have the same highest score.