Class: Birdwatcher::Modules::Statuses::Sentiment

Inherits:
Birdwatcher::Module show all
Defined in:
lib/birdwatcher/modules/statuses/sentiment.rb

Constant Summary

Constants inherited from Birdwatcher::Module

Birdwatcher::Module::MODULE_PATH

Constants included from Concerns::Concurrency

Concerns::Concurrency::DEFAULT_THREAD_POOL_SIZE

Constants included from Concerns::Core

Concerns::Core::DATA_DIRECTORY

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Birdwatcher::Module

_file_path, _file_path=, descendants, #execute, inherited, meta, meta=, module_by_path, module_paths, modules, path

Methods included from Concerns::Concurrency

included, #thread_pool

Methods included from Concerns::Persistence

included, #save_status, #save_user

Methods included from Concerns::Presentation

included, #make_status_summary_output, #make_url_summary_output, #make_user_details_output, #make_user_summary_output, #output_status_summary, #output_user_details, #output_user_summary, #page_text

Methods included from Concerns::Outputting

#confirm, #error, #fatal, included, #info, #line_separator, #newline, #output, #output_formatted, #task, #warn

Methods included from Concerns::Util

#escape_html, #excerpt, included, #parse_time, #pluralize, #strip_control_characters, #strip_html, #suppress_output, #suppress_warnings, #time_ago_in_words, #unescape_html

Methods included from Concerns::Core

#console, #current_workspace, #current_workspace=, #database, included, #klout_client, #read_data_file, #twitter_client

Class Method Details

.info ⇒ Object 



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# File 'lib/birdwatcher/modules/statuses/sentiment.rb', line 18

def self.info
<<-INFO
The Status Sentiment Analysis module can calculate the rough sentiment of statuses
in the workspace. Each status will get a sentiment score of Negative, Positive
or Neutral.

Please note that sentiment analysis is not very accurate and should always be
manually reviewed for serious work.
INFO
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/birdwatcher/modules/statuses/sentiment.rb', line 29

def run
  statuses = current_workspace.statuses_dataset.where(:sentiment => nil)
  if statuses.empty?
    error("There are no statuses to analyze")
    return false
  end
  analyser = Sentimental.new
  threads  = thread_pool(option_setting("THREADS").to_i)
  task("Training the sentiment analyzer...") do
    analyser.load_defaults
  end
  statuses.each do |status|
    threads.process do
      begin
        text = sanitize_text(status.text)
        sentiment = analyser.sentiment(text)
        case sentiment
        when :positive
          info("Positive: ".bold.light_green + Birdwatcher::Util.excerpt(status.text, 80))
        when :negative
          info("Negative: ".bold.light_red + Birdwatcher::Util.excerpt(status.text, 80))
        else
          info(" Neutral: ".bold + Birdwatcher::Util.excerpt(status.text, 80))
        end
        status.sentiment = sentiment.to_s
        status.save
      rescue => e
        error("Sentiment analysis for status #{status.id.bold} failed (#{e.class})")
      end
    end
  end
  threads.shutdown
end