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Subject [GitHub] [madlib] fmcquillan99 commented on issue #432: MADLIB-1351 : Added stopping criteria on perplexity to LDA
Date Fri, 01 Nov 2019 18:20:57 GMT
fmcquillan99 commented on issue #432: MADLIB-1351 : Added stopping criteria on perplexity to
LDA
URL: https://github.com/apache/madlib/pull/432#issuecomment-548897385
 
 
   (5) 
   iteration number does not match when early termination
   ```madlib=# SELECT voc_size, topic_num, alpha, beta, num_iterations, perplexity, perplexity_iters
from lda_model_perp;
   -[ RECORD 1 ]----+----------------------------------------------------------
   voc_size         | 384
   topic_num        | 5
   alpha            | 5
   beta             | 0.01
   num_iterations   | 5
   perplexity       | {199.746367293,193.662852162,190.782567914,189.245695537}
   perplexity_iters | {1,2,3,4}
   
   Time: 38.941 ms
   ```
   I think `num_iterations ` should be 4 ?

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