# Ruby classifier **URL:** \ **Category:** Ruby\ **Created:** [March 28, 2007, 6:00am UTC](https://www.ruby-forum.com/t/ruby-classifier/90366 "2007-03-28T06:00:23Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Ryo\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/85e7bf/32.png) [@Ryo\_F](https://www.ruby-forum.com/u/Ryo_F)\ **Post date:** [March 28, 2007, 6:00am UTC](https://www.ruby-forum.com/t/ruby-classifier/90366/1 "2007-03-28T06:00:23Z")
I tried installing ruby classifier using sudo gem install classifier but when I try to use classifier I get irb(main):001:0\> require “classifier” LoadError: no such file to load – classifier from (irb):1:in `require’ from (irb):1 What am I doing wrong? Thank you. ---
**Author:** ![Ryo\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/85e7bf/32.png) [@Ryo\_F](https://www.ruby-forum.com/u/Ryo_F)\ **Post date:** [March 28, 2007, 6:09am UTC](https://www.ruby-forum.com/t/ruby-classifier/90366/2 "2007-03-28T06:09:57Z")
On 3/28/07, Ryo F. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Didja try require ‘rubygems’ require ‘classifier’ ? ---
**Author:** ![Ryo\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/85e7bf/32.png) [@Ryo\_F](https://www.ruby-forum.com/u/Ryo_F)\ **Post date:** [March 28, 2007, 7:15am UTC](https://www.ruby-forum.com/t/ruby-classifier/90366/3 "2007-03-28T07:15:06Z")
Ah, whoops, that part is fixed now. But when to add items to the LSI classifier, I get: > > lsi.add\_item( “This is a turtle.”, :turtle ) > > =\> nil > > lsi.add\_item( “This is a cuckoo.”, :cuckoo ) > > ArgumentError: wrong number of arguments (1 for 0) > > from > > /usr/local/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi/content\_node.rb:37:in > > `initialize’ > > … i.e., I get these “wrong number of arguments” errors as soon as I try to add more than one item. Any idea about this? Logan C. wrote: > On 3/28/07, Ryo F. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > Didja try > require ‘rubygems’ > require ‘classifier’ > > ? ---
**Author:** ![Ryo\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/85e7bf/32.png) [@Ryo\_F](https://www.ruby-forum.com/u/Ryo_F)\ **Post date:** [April 10, 2007, 8:54pm UTC](https://www.ruby-forum.com/t/ruby-classifier/90366/4 "2007-04-10T20:54:03Z")
Dan and Colin, The current version of Classifier’s LSI is kind of broken. It was half in development ages ago and for whatever reason the “stable” version got merged with a half-working dev version. For a number of reasons (which I’ll omit), development stalled and it wasn’t cleaned up. I wasn’t involved directly with the main development of Classifier, but I did have some involvement with some of the not-so-implemented ideas. I’ve been extremely busy for a couple months, but sometime soon I hope to smooth over some of the LSI issues to get it stable again. I’ll look into the exact error you both are posting - if it’s something workaroundable I’ll let you know. Cameron ---
**Author:** ![Ryo\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/85e7bf/32.png) [@Ryo\_F](https://www.ruby-forum.com/u/Ryo_F)\ **Post date:** [April 7, 2007, 7:34pm UTC](https://www.ruby-forum.com/t/ruby-classifier/90366/5 "2007-04-07T19:34:02Z")
I’ve spent a couple of days trying to get LSI Classifer to work. The Bayesian library works fine (and is fun), but LSI is not working for me. I have the GSL installed and the ruby-gsl wrapper, which seem to be working fine. However, I get the same error as mentioned in the previous post. The error occurs as the 2nd item is added to the index. It occurs somewhere within the rebuild\_index procedure. If auto\_index is switched off, items can be added infinitum. Please help :S #--------test script require ‘rubygems’ require ‘gsl’ require ‘classifier’ require ‘stemmer’ lsi = Classifier::LSI.new strings = [[“This text deals with dogs. Dogs.”, :dog], ["This text involves dogs too. Dogs! ", :dog], [“This text revolves around cats. Cats.”, :cat], [“This text also involves cats. Cats!”, :cat], [“This text involves birds. Birds.”,:bird]] strings.each {|x| lsi.add\_item x.first, x.last} lsi.search(“dog”, 3) # returns =\> [“This text deals with dogs. Dogs.”, "This text involves dogs too . Dogs! ", # “This text also involves cats. Cats!”] lsi.find\_related(strings[2], 2) # returns =\> [“This text revolves around cats. Cats.”, "This text also involve s cats. Cats!"] lsi.classify “This text is also about dogs!” # returns =\> :dog #--------error /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/extensions/string.rb:6:Warning: require\_gem is obsolete. Use gem instead. /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi/content\_node.rb:37:in `initialize': wrong number of arguments (1 for 0) (ArgumentError) from /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi/content_node.rb:37:in `new’ from /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi/content\_node.rb:37:in `raw_vector_with' from /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi.rb:123:in `build\_index’ from /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi.rb:123:in `collect' from /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi.rb:123:in `build\_index’ from /usr/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi.rb:65:in `add_item' from lsitest.rb:12 from lsitest.rb:12:in `each’ from lsitest.rb:12 Dan Colin B. wrote: > Ah, whoops, that part is fixed now. But when to add items to the LSI > classifier, I get: > > > > lsi.add\_item( “This is a turtle.”, :turtle ) > > > =\> nil > > > lsi.add\_item( “This is a cuckoo.”, :cuckoo ) > > > ArgumentError: wrong number of arguments (1 for 0) > > > from > > > /usr/local/lib/ruby/gems/1.8/gems/classifier-1.3.0/lib/classifier/lsi/content\_node.rb:37:in > > > `initialize’ > > > … > > i.e., I get these “wrong number of arguments” errors as soon as I try to > add more than one item. > > Any idea about this? > > Logan C. wrote: > > > On 3/28/07, Ryo F. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > > > > > Didja try > > require ‘rubygems’ > > require ‘classifier’ > > > > ? ---
**Author:** ![Ryo\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/85e7bf/32.png) [@Ryo\_F](https://www.ruby-forum.com/u/Ryo_F)\ **Post date:** [April 10, 2007, 9:43pm UTC](https://www.ruby-forum.com/t/ruby-classifier/90366/6 "2007-04-10T21:43:22Z")
Cameron McBride wrote: > Dan and Colin, > > The current version of Classifier’s LSI is kind of broken. It was > half in development ages ago and for whatever reason the “stable” > version got merged with a half-working dev version. For a number of > reasons (which I’ll omit), development stalled and it wasn’t cleaned > up. > > I wasn’t involved directly with the main development of Classifier, > but I did have some involvement with some of the not-so-implemented > ideas. I’ve been extremely busy for a couple months, but sometime > soon I hope to smooth over some of the LSI issues to get it stable > again. > > I’ll look into the exact error you both are posting - if it’s > something workaroundable I’ll let you know. > > Cameron Cameron, Thanks for your reply. I appreciate the difficulty in maintaining these things, so thanks for any input you can provide. If I find a fix, I’ll post it here. Regards Dan