Update README.md

Author: VaasuDevanS

README.md

@@ -22,7 +22,7 @@ No usage of Numpy in any of the code and developed using Python2.7 (built-in mod
 | 2 |  MODEL<br>TRAIN_FILE<br>TEST_FILE |  <b>1</b> or <b>2</b> or <b>interp</b><br>Data/reuters-train.txt<br>Data/reuters-dev.txt
 | 3 | METHOD<br>TRAIN_DOCS<br>TRAIN_CLASSES<br>TEST_FILE<br>TRUE_CLASSES  | <b>baseline</b> or <b>lr</b> or <b>lexicon</b> or <b>nb</b> or <b>nbbin</b><br>Data/train.docs.txt<br>Data/train.classes.txt<br>Data/dev.docs.txt<br>Data/dev.classes.txt
 | 4 | TRAIN_FILE<br>TEST_FILE<br>METHOD<br>TRUE_TAGS  |Data/train.en.txt<br>Data/dev.en.words.txt<br><b>baseline</b> or <b>hmm</b><br>Data/dev.en.tags.txt
-| 5 | METHOD |  overlap<br>w2v
+| 5 | METHOD |  overlap<br>w2v<br>both
 
 Assignment 2: - 
 MODEL  
@@ -47,3 +47,4 @@ Assignment 5: -
 METHOD  
 * <b>overlap</b> represents <b>Chatbot responses based on the word overlap</b>
 * <b>w2v</b> represents <b>Response with highest Cosine value (from pre-trained vectors from fastText)</b>
+* <b>both</b> represents <b>both responses from overlap and w2v with their Cosine values</b>