Class: Tagger

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

Overview

Copyright 2015 The MITRE Corporation

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Constant Summary collapse

@@unit_search_global = 
/(?:mg\.?(?:(?:\/|\s*per\s*)(one|five|1|5)?\s*(?:ml|cc|m2|meters? squared|m squared)\.?)?
|units?|micrograms?|milligrams?|mg|grams?|millimoles?|milliequivalents?|percent
|(?:au|pnu)(?:\/|per\s*)ml
|\%|gr\.?|meq\.?|mmol\.?|ugm?s?|mcg)/ix
@@number_word_search = 
/(?:one|two|three|four|five|six|seven|eight|nine|ten|fifteen|twenty|thirty|sixty)/
@@number_numeric_search = 
/(?:\d+\/)?\d+(?:\.\d+)?/
@@number_numeric_or_word_search = 
/(?:(?:#{@@number_numeric_search})|(?:#{@@number_word_search}))/
@@number_hundred_thousand_search = 
/(?:\shundred|\sthousand)/
@@number_complete_search =

search for number (word or numeric) with optional hundred or thousand modifier

/(?:#{@@number_numeric_or_word_search})(?:\s(?:#{@@number_hundred_thousand_search}))?/

Instance Method Summary collapse

Instance Method Details

#normalize(text) ⇒ Object 



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# File 'lib/tagger.rb', line 86

def normalize(text)
  # placeholder for Tagger-subclass-specific normalization mappers,
  # e.g. "once a day" => :qd for the FrequencyTagger
end

#parse_main(text) ⇒ Object 



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# File 'lib/tagger.rb', line 82

def parse_main(text)
  tags = parse_text(text, @default_precondition, @default_search, @content_group)
end

#parse_text(text, precondition, search, content_group = @content_group) ⇒ Object

@@numberSearch =

/(?:#{@@number_numeric_or_word_search})
    (?:\shundred|\sthousand)?(?:(?:-|\s+to\s+)
    (?:\d+(?:\.\d+)?|one|two)
    (?:\shundred|\sthousand)?)?/i



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

def parse_text(text, precondition, search, content_group = @content_group)
    tags = []
    if text =~ precondition
        
        #if there are multiple instances, this will find them all
        #and record them as separate tags, as well as preserving their
        #location in the text
        window = text.dup
        textlocation = 0
        while window =~ search
          instance = search.match window
          beginning = textlocation + instance.begin(content_group)
          ending = textlocation + instance.end(content_group)
          textlocation = ending
          content = instance[content_group]
          window = window.slice instance.end(content_group)..window.length
          normalized = normalize content
          attributes = normalized ? {:normalized => normalized} : {}
          tags << Standoff::Tag.new(:content => content,
                                    :attributes => attributes,
                                    :name => @name,
                                    :start => beginning,
                                    :end => ending)
        end
    end
    
    return tags
end