KeyError: “word 'word' not in vocabulary” in word2vec

Question

I am using word2vec , wiki corpus I trained, what can I do if the word I input not in vocabulary in word2vec ?

Test it a bit:

model = word2vec.Word2Vec.load('model/' + 'wiki_chinese_word2vec.model')    
model['boom']

Error:

KeyError("word '%s' not in vocabulary" % word)

Answer 1

Use try & except to handle exceptions in Python. try block executes normally. If any exception or error occurs then except block will be executed.

try:
        c = model['boom']
except KeyError:
        print "not in vocabulary"
        c = 0

Answer 2

when you say

what can I do if the word I input not in vocabulary in word2vec

I interpret it two ways

1) How to escape this exception: You can use try , catch

2) How to handle this exception: retrain the model with the missing words accommodated again.You have an option to incrementally train the model , with new corpus ,in word2vec, please go through the gensim tutorial in detail.

I presume that "boom" is not available in the corpus that you have passed, hence the trouble