From f9ca5facb8882001db4a45efa8f2997c067b7311 Mon Sep 17 00:00:00 2001
From: zkwip
Date: Tue, 9 Jun 2015 20:54:24 +0200
Subject: Summary shortening improvements

made the length limiter less greedy
---
 .../main/java/org/rssin/summaries/BablukiAPI.java  | 56 +++++++++++++++++-----
 1 file changed, 45 insertions(+), 11 deletions(-)

(limited to 'app/src/main')

diff --git a/app/src/main/java/org/rssin/summaries/BablukiAPI.java b/app/src/main/java/org/rssin/summaries/BablukiAPI.java
index 8d5a1af..417a807 100644
--- a/app/src/main/java/org/rssin/summaries/BablukiAPI.java
+++ b/app/src/main/java/org/rssin/summaries/BablukiAPI.java
@@ -100,12 +100,15 @@ public class BablukiAPI implements SummaryAPIInterface{
         int senc = sents.size();
         
         //reduce if neccesairy
+
+        ArrayList<String> sents_bu = (ArrayList<String>)sents.clone();
         
-        while((lm == LengthMode.LINES || lm == LengthMode.BOTH) && sents.size() > maxlines)
+        while((lm == LengthMode.LINES || lm == LengthMode.BOTH) && sents.size() > maxlines) {
             removeLeastSentence(sents, ranks);
+        }
         
         while((lm == LengthMode.CHARACTERS || lm == LengthMode.BOTH) && getTotalSize(sents, sep) > maxchars)
-            removeLeastSentence(sents, ranks);
+            removeLeastSentences(sents, ranks);
         
         //output the sentences.
         
@@ -163,30 +166,62 @@ public class BablukiAPI implements SummaryAPIInterface{
         return len;
     }
     
-    private void removeLeastSentence(ArrayList<String> sents, SentenceScore[] ranks)
-    {
+    private void removeLeastSentence(ArrayList<String> sents, SentenceScore[] ranks) {
+
+        int index = findLeastSentence(sents,ranks);
+        sents.remove(index);
+
+    }
+    private int findLeastSentence(ArrayList<String> sents, SentenceScore[] ranks) {
+
+        //higher is better
         double lowest = Double.MAX_VALUE;
         int index = 0;
-        
         for(int i=0; i<sents.size(); i++)
         {
-            double score = getScore(formatSentence(sents.get(i)),ranks);
+            double score = getScore(formatSentence(sents.get(i)), ranks);
             if (score < lowest)
             {
                 index = i;
                 lowest = score;
             }
         }
-        
-        sents.remove(index);
+        return index;
 
     }
+
+    private void removeLeastSentences(ArrayList<String> sentences, SentenceScore[] ranks)
+    {
+        while (getTotalSize(sentences, sep) > maxchars) {
+
+            int bestid = findLeastSentence(sentences,ranks);
+            double bestScore = 0;
+
+            for (int i = 0; i < sentences.size(); i++) {
+                ArrayList<String> sents = new ArrayList<>(sentences);
+                sents.remove(i);
+                if (getTotalSize(sents, sep) <= maxchars) {
+                    if (getTotalScore(sents, ranks) >= bestScore) {
+                        bestid = i;
+                        bestScore = getTotalScore(sents, ranks);
+                    }
+                }
+            }
+            sentences.remove(bestid);
+        }
+    }
+
+    private double getTotalScore(ArrayList<String> sentences, SentenceScore[] ranks)
+    {
+        double score = 0;
+        for(String s: sentences)
+            score += getScore(formatSentence(s),ranks);
+        return score;
+    }
     
     private String[] splitIntoSentences(String content)
     {
-        //ik word gek
         String ends = "qwertyuiopasdfghjklzxcvbnm1234567890QWERTYUIOPASDFGHJKLZXCVBNM";
-        //String ends = "a";
         content = content.replaceAll("\n", " ");
         String[] ss = content.split("(\\.|!) +");
         for(int i=0; i<ss.length; i++) {
@@ -287,7 +322,6 @@ public class BablukiAPI implements SummaryAPIInterface{
                 }
             }
         }
-        
         return best;
     }
     
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