Re: Logistic Regression: poor results on small data set

2011-07-08 Thread hakeem
substantial computational performance benefits; however, a degradation in model accuracy is a potential trade-off. -- View this message in context: http://lucene.472066.n3.nabble.com/Logistic-Regression-poor-results-on-small-data-set-tp3149694p3150228.html Sent from the Mahout User List mailing list

Logistic Regression: poor results on small data set

2011-07-08 Thread hakeem
: http://lucene.472066.n3.nabble.com/Logistic-Regression-poor-results-on-small-data-set-tp3149694p3149694.html Sent from the Mahout User List mailing list archive at Nabble.com.

Re: Logistic Regression: poor results on small data set

2011-07-08 Thread Ted Dunning
On Thu, Jul 7, 2011 at 2:20 PM, hakeem t...@indeed.com wrote: Because I have so few documents, I run the set of documents through train() in epochs -- up to 1000 times, shuffling the order of the documents on each epoch. Fair. My questions: 1) Are these results surprising to you? Or,

Re: Logistic Regression: poor results on small data set

2011-07-08 Thread Ted Dunning
If you keep the probes at 2, you should have better results with sparse features and a large dimensionality reduction. On Thu, Jul 7, 2011 at 5:58 PM, hakeem t...@indeed.com wrote: I increased the vector size substantially and reduced the number of probes to 1. With the collisions eliminated,