Revision: 4128
http://sourceforge.net/p/dl-learner/code/4128
Author: dfleischhacker
Date: 2013-10-24 13:47:14 +0000 (Thu, 24 Oct 2013)
Log Message:
-----------
Fix NPE in VSMCosineDocumentSimilarity by returning empty set if unable to produce a vector
Modified Paths:
--------------
trunk/components-core/src/main/java/org/dllearner/algorithms/isle/VSMCosineDocumentSimilarity.java
Modified: trunk/components-core/src/main/java/org/dllearner/algorithms/isle/VSMCosineDocumentSimilarity.java
===================================================================
--- trunk/components-core/src/main/java/org/dllearner/algorithms/isle/VSMCosineDocumentSimilarity.java 2013-10-24 13:40:06 UTC (rev 4127)
+++ trunk/components-core/src/main/java/org/dllearner/algorithms/isle/VSMCosineDocumentSimilarity.java 2013-10-24 13:47:14 UTC (rev 4128)
@@ -182,6 +182,10 @@
private Map<String, Double> getTermWeights(IndexReader reader, int docId)
throws IOException {
Terms vector = reader.getTermVector(docId, CONTENT);
+ //TODO: not sure if this is reasonable but it prevents NPEs
+ if (vector == null) {
+ return new HashMap<String, Double>();
+ }
TermsEnum termsEnum = vector.iterator(null);
Map<String, Double> weights = new HashMap<String, Double>();
BytesRef text = null;
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