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Code Issues Releases Wiki Activity

Removed common word filter

This commit is contained in:
M66B 2021-01-05 13:26:46 +01:00
parent 05422c6cf9
commit eccfdb9bc9
1 changed files with 1 additions and 32 deletions
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33
app/src/main/java/eu/faircode/email/MessageClassifier.java
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@ -52,7 +52,6 @@ public class MessageClassifier {
private static final Map<Long, Map<String, Map<String, Integer>>> wordClassFrequency = new HashMap<>();
private static final int MIN_MATCHED_WORDS = 10;
private static final double COMMON_WORD_FACTOR = 0.75;
private static final double CHANCE_THRESHOLD = 2.0;
static void classify(EntityMessage message, boolean added, Context context) {
@ -188,37 +187,7 @@ public class MessageClassifier {
wordClassFrequency.get(account).put(word, classFrequency);
}
// Filter classes of common occurring words
List<String> applyClasses = new ArrayList<>(classFrequency.keySet());
for (String class1 : classFrequency.keySet()) {
Integer messages1 = classMessages.get(account).get(class1);
if (messages1 == null || messages1 == 0)
continue;
double percentage1 = (double) classFrequency.get(class1) / messages1;
if (percentage1 == 0)
continue;
for (String class2 : classFrequency.keySet())
if (!class1.equals(class2)) {
Integer messages2 = classMessages.get(account).get(class2);
if (messages2 == null || messages2 == 0)
continue;
double percentage2 = (double) classFrequency.get(class2) / messages2;
if (percentage2 == 0)
continue;
double factor = percentage1 / percentage2;
if (factor > 1)
factor = 1 / factor;
if (factor > COMMON_WORD_FACTOR) {
Log.i("Classifier skip class=" + class1 + " word=" + word);
applyClasses.remove(class1);
break;
}
}
}
for (String clazz : applyClasses) {
for (String clazz : classFrequency.keySet()) {
int frequency = classFrequency.get(clazz);
Stat stat = classStats.get(clazz);