Is the topic distribution computation in LDASampler::GenerateTopicDistributionForWord correct?
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GoogleCodeExporter commented
It looks like the distribution computation in
LDASampler::GenerateTopicDistributionForWord has:
distribution->push_back(
(topic_word_factor + beta_) *
(document_topic_factor + alpha_) /
(global_topic_factor + num_topics * beta_));
But based on Algorithm 3.1 in
http://www.datalab.uci.edu/papers/fastLDA_2008.pdf, shouldn't the
denominator in the value above be (global_topic_factor + num_words *
beta_)?
Original issue reported on code.google.com by ritz.kar@gmail.com on 14 Mar 2009 at 7:37