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Commit a861d110 authored by Soroosh Mariooryad's avatar Soroosh Mariooryad
Browse files

Update suggestion ranking model coefficients. 

- This is not a functional change and it only updates the model weights
which affects the ranking of suggestion items. The previous weights were
tuned to force the ranking to have immediate response to signal changes.
But, the current weights are tuned to maximize the user interactions
with suggestion.

Test: RunSettingsRoboTests & also manually testing suggestions
Bug: 64093782

Change-Id: I9f50ed6c4ed22d1a14110ec61156c14ba74aef64
parent 3bd56d97

src/com/android/settings/dashboard/suggestions/SuggestionRanker.java

+7 −7
Original line number Diff line number Diff line
@@ -34,13 +34,13 @@ public class SuggestionRanker { 
    // by training a binary classifier to detect the clicked items. The higher the obtained

    // relevance metric, the higher chance of getting clicked.

    private static final Map<String, Double> WEIGHTS = new HashMap<String, Double>() {{

        put(SuggestionFeaturizer.FEATURE_IS_SHOWN, 4.07506758256);

        put(SuggestionFeaturizer.FEATURE_IS_DISMISSED, 2.11535473578);

        put(SuggestionFeaturizer.FEATURE_IS_CLICKED, 1.21885461304);

        put(SuggestionFeaturizer.FEATURE_TIME_FROM_LAST_SHOWN, 3.18832024515);

        put(SuggestionFeaturizer.FEATURE_TIME_FROM_LAST_DISMISSED, 1.09902706645);

        put(SuggestionFeaturizer.FEATURE_TIME_FROM_LAST_CLICKED, 0.262631082877);

        put(SuggestionFeaturizer.FEATURE_SHOWN_COUNT, -220.4361849);

        put(SuggestionFeaturizer.FEATURE_IS_SHOWN, 5.05140842519);

        put(SuggestionFeaturizer.FEATURE_IS_DISMISSED, 2.29641455171);

        put(SuggestionFeaturizer.FEATURE_IS_CLICKED, -2.98812233623);

        put(SuggestionFeaturizer.FEATURE_TIME_FROM_LAST_SHOWN, 5.02807250202);

        put(SuggestionFeaturizer.FEATURE_TIME_FROM_LAST_DISMISSED, 2.49589700842);

        put(SuggestionFeaturizer.FEATURE_TIME_FROM_LAST_CLICKED, -4.3377039948);

        put(SuggestionFeaturizer.FEATURE_SHOWN_COUNT, -2.35993512546);

    }};



    private final SuggestionFeaturizer mSuggestionFeaturizer;