Class: LProblem

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(y, x, bias) ⇒ LProblem

Returns a new instance of LProblem.



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# File 'lib/linear.rb', line 144

def initialize(y,x,bias)
#    assert_equal(y.size, x.size)
  @prob = prob = Problem.new 
  @size = size = y.size
  
  @y_array = y_array = new_int(size)
  for i in (0..size-1)
    int_setitem(@y_array,i,y[i])
  end
  
  @x_matrix = x_matrix = feature_node_matrix(size)
  @data = []
  @maxlen = 0  #max number of features
  len_array=[]

  for i in (0..size-1)
    data = _convert_to_feature_node_array(x[i], @maxlen, bias)
    @data << data
    feature_node_matrix_set(x_matrix,i,data)

    if x[i].class == Hash
      if x[i].size > 0
        @maxlen = [@maxlen,x[i].keys.max].max          
      end
    else
      @maxlen = [@maxlen,x[i].size].max
    end
    len_array << x[i].size      
  end

  if bias >= 0
    set_bias_index(x_matrix, size, @maxlen, _int_array(len_array))
  end
  
  prob.y = y_array
  prob.x = x_matrix
  prob.bias = bias
  prob.l = size
  prob.n = @maxlen
  if bias >= 0
    prob.n += 1
  end
end

Instance Attribute Details

#maxlen ⇒ Object

Returns the value of attribute maxlen.



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# File 'lib/linear.rb', line 142

def maxlen
  @maxlen
end

#prob ⇒ Object

Returns the value of attribute prob.



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# File 'lib/linear.rb', line 142

def prob
  @prob
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/linear.rb', line 142

def size
  @size
end

Instance Method Details

#destroy ⇒ Object 



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# File 'lib/linear.rb', line 192

def destroy
  delete_problem(@prob)
  delete_int(@y_array)
  for i in (0..size-1)
    feature_node_array_destroy(@data[i])
  end
  feature_node_matrix_destroy(@x_matrix)
end

#inspect ⇒ Object 



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# File 'lib/linear.rb', line 188

def inspect
  "LProblem: size = #{size} n=#{prob.n} bias=#{prob.bias} maxlen=#{@maxlen}"
end