Class: CategorizerSr

Inherits:
Object
  • Object
show all
Defined in:
lib/categorizer_sr.rb

Overview

Copyright © 2016-2018, Claudio Bustos Navarrete All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

  • Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Constant Summary collapse

STOPWORDS = 
%w{the an a with we dont to in that these those from each @ i it other how is are why}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(rs, model = nil) ⇒ CategorizerSr

Returns a new instance of CategorizerSr



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# File 'lib/categorizer_sr.rb', line 33

def initialize(rs,model=nil)
  require 'categorize'
  require 'lingua/stemmer'
  @rs=rs

  if(model.nil?)
    @model = Categorize::Models::BagOfWords.new

    @model.max_buckets = @rs.cd_all_id.length>0 ? Math.log(@rs.cd_all_id.length).floor*2 : 1
  else
    @model.min_support = 0.01
    @model=model
  end
  categorizer_process
end

Instance Attribute Details

#categorias_cd_id ⇒ Object (readonly)

Returns the value of attribute categorias_cd_id



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# File 'lib/categorizer_sr.rb', line 30

def categorias_cd_id
  @categorias_cd_id
end

Instance Method Details

#cd_categoria(cd_id) ⇒ Object 



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# File 'lib/categorizer_sr.rb', line 73

def cd_categoria(cd_id)
  @cd_id_categorias[cd_id]
end

#get_stemmer_text(text) ⇒ Object 



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# File 'lib/categorizer_sr.rb', line 49

def get_stemmer_text(text)
  res=Lingua.stemmer(text.split(/[\s-]+/).map {|vv| vv.downcase.gsub(/[[:punct:]]/, "")}.find_all {|v| !STOPWORDS.include? v})
  res.is_a?(Array) ? res.join(" ") : res
end