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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Work logged] (TEXT-126) Dice's Coefficient Algorithm in String similarity
Date Sun, 24 Mar 2019 09:33:00 GMT


ASF GitHub Bot logged work on TEXT-126:

                Author: ASF GitHub Bot
            Created on: 24/Mar/19 09:32
            Start Date: 24/Mar/19 09:32
    Worklog Time Spent: 10m 
      Work Description: kinow commented on pull request #103: TEXT-126: Adding Sorensen-Dice
similarity algoritham

 File path: src/main/java/org/apache/commons/text/similarity/
 @@ -0,0 +1,165 @@
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.text.similarity;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Function;
+import org.apache.commons.lang3.StringUtils;
+ * A similarity algorithm indicating the percentage of matched characters
+ * between two character sequences.
+ *
+ * <p>
+ * The S&#248;rensen–Dice coefficient is a statistic used for comparing the
 Review comment:
   The documentation is correctly rendered now on GitHub, but not on Eclipse and I believe
the issue is with the _dash_ character you are using @ameyjadiye . Take a look at this screenshot:
   Now if you copy the character between Sorensen and Dice, and paste here:,
it should tell you it is a `En dash`, but probably Javadocs behave better with a hyphen-minus
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Issue Time Tracking

    Worklog Id:     (was: 217682)
    Time Spent: 13h  (was: 12h 50m)

> Dice's Coefficient Algorithm in String similarity
> -------------------------------------------------
>                 Key: TEXT-126
>                 URL:
>             Project: Commons Text
>          Issue Type: Improvement
>            Reporter: Vicky Chawda
>            Priority: Major
>          Time Spent: 13h
>  Remaining Estimate: 0h
> I'd like to propose an extension to the algorithms for string similarity in *commons-text/src/main/java/org/apache/commons/text/similarity/*
>  Dice's Coefficient Algorithm can be helpful for many who are looking for ranking similarities
in strings.
> *Inspired from* - []

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