Class: Problem

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(y, x) ⇒ Problem

Returns a new instance of Problem.



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# File 'lib/svm.rb', line 138

def initialize(y,x)
  #assert y.size == x.size
  @prob = prob = Svm_problem.new 
  @size = size = y.size
  
  @y_array = y_array = new_double(size)
  for i in (0..size-1)
    double_setitem(@y_array,i,y[i])
  end
  
  @x_matrix = x_matrix = svm_node_matrix(size)
  @data = []
  @maxlen = 0
  for i in (0..size-1)
    data = _convert_to_svm_node_array(x[i])
    @data << data
    svm_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
  end
  
  prob.l = size
  prob.y = y_array
  prob.x = x_matrix
end

Instance Attribute Details

#maxlen ⇒ Object

Returns the value of attribute maxlen.



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# File 'lib/svm.rb', line 136

def maxlen
  @maxlen
end

#prob ⇒ Object

Returns the value of attribute prob.



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# File 'lib/svm.rb', line 136

def prob
  @prob
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/svm.rb', line 136

def size
  @size
end

Instance Method Details

#destroy ⇒ Object 



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# File 'lib/svm.rb', line 173

def destroy
  delete_svm_problem(@prob)
  delete_double(@y_array)
  for i in (0..size-1)
    svm_node_array_destroy(@data[i])
  end
  svm_node_matrix_destroy(@x_matrix)
end

#inspect ⇒ Object 



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# File 'lib/svm.rb', line 169

def inspect
  return "Problem: size = #{size}"
end