greptilian logo

IRC log for #sourcefu, 2013-05-04

http://sourcefu.com

| Channels | #sourcefu index | Today | | Search | Google Search | Plain-Text | plain, newest first | summary

All times shown according to UTC.

Time S Nick Message
11:02 pdurbin I have to admit my mind was a little blown listening to Grant Ingersoll describe how Lucene implements the http://en.wikipedia.org/wiki/Vector_space_model at http://www.se-radio.net/2012/07/episode-187-grant-ingersoll-on-the-solr-search-engine/
11:03 pdurbin he was all "if you remember your trigonometry the cosine of [something] is [something]" ... vector this, vector that
11:13 aditsu joined #sourcefu
11:14 pdurbin "VSM score of document d for query q is the Cosine Similarity of the weighted query vectors V(q) and V(d)" -- http://lucene.apache.org/core/4_2_1/core/org/apache/lucene/search/similarities/TFIDFSimilarity.html
11:15 pdurbin from "Classic Scoring Formula: Formula of Lucene's classic Vector Space implementation" at http://lucene.apache.org/core/4_2_1/
13:31 pdurbin I'm listening to http://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/video-lectures/lecture-9-independence-basis-and-dimension/ but it's over my head. need to start with lecture 1... or (more likely) start with an easier course, a prereq
15:57 pdurbin done. nice lecture. it's always nice to hear the language of a domain, even if I'm completely confused. "null space" "matrix" etc.
15:58 pdurbin and I'm realizing I'm much more interested in [what I would consider] advanced mathematical concepts if I understand the practical application
15:58 pdurbin such as applying the vector space model to searching documents with Lucene
16:01 * pdurbin asks if this stuff is on topic in #pdl: http://irclog.perlgeek.de/pdl/2013-05-04#i_7018368
17:27 pdurbin hearing about http://www.codeclub.org.uk at http://creativecodingpodcast.com/269/
17:27 pdurbin "742 Code Clubs in the UK"
17:42 aditsu joined #sourcefu

| Channels | #sourcefu index | Today | | Search | Google Search | Plain-Text | plain, newest first | summary

http://sourcefu.com