Class: Datasets::Communities

Inherits:
Dataset
  • Object
show all
Defined in:
lib/datasets/communities.rb

Defined Under Namespace

Classes: Record

Instance Attribute Summary

Attributes inherited from Dataset

#metadata

Instance Method Summary collapse

Methods inherited from Dataset

#clear_cache!, #to_table

Constructor Details

#initializeCommunities

Returns a new instance of Communities.


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# File 'lib/datasets/communities.rb', line 138

def initialize
  super()
  @metadata.id = "communities"
  @metadata.name = "Communities"
  @metadata.url = "https://archive.ics.uci.edu/ml/datasets/communities+and+crime"
  @metadata.description = lambda do
    read_names
  end
end

Instance Method Details

#eachObject


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# File 'lib/datasets/communities.rb', line 148

def each
  return to_enum(__method__) unless block_given?

  open_data do |csv|
    csv.each do |row|
      row = row.collect.with_index do |column, i|
        if column == "?"
          nil
        else
          case i
          when 3 # communityname
          # when 124 # LemasGangUnitDeploy
          # 0 means NO, 1 means YES, 0.5 means Part Time
          else
            column = Float(column)
          end
          column
        end
      end
      record = Record.new(*row)
      yield(record)
    end
  end
end