Class: Kumi::IR::DF::Ops::AxisCross

Inherits:
Node show all
Defined in:
lib/kumi/ir/df/ops/axis_cross.rb

Overview

Re-exposes ‘source` (an array over `source_axis`) under a fresh, independent axis `axis` backed by the same carrier. The result has the source’s axes plus ‘axis` appended as the new innermost axis, so the element at (i, j) reads source. This is the broadcast-dual of a reduction and is what makes all-pairs / self-join computations (e.g. N-body) expressible.

Instance Attribute Summary

Attributes inherited from Base::Instruction

#attributes, #axes, #dtype, #effects, #inputs, #metadata, #opcode, #result

Instance Method Summary collapse

Methods inherited from Node

opcode, #to_h

Methods inherited from Base::Instruction

#control_effect?, #defs, #effectful?, #io_effect?, #memory_effect?, #normalized_attributes, #printer_attributes, #printer_axes, #printer_dtype, #produces?, #stamp, #state_effect?, #to_h, #to_print_string, #uses, #validate!, #value_signature, #with_metadata

Constructor Details

#initialize(source:, axis:, source_axis:, **kwargs) ⇒ AxisCross

Returns a new instance of AxisCross.



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# File 'lib/kumi/ir/df/ops/axis_cross.rb', line 16

def initialize(source:, axis:, source_axis:, **kwargs)
  super(
    inputs: [source],
    attributes: {
      axis: axis.to_sym,
      source_axis: source_axis.to_sym
    },
    **kwargs
  )
end

Instance Method Details

#axis ⇒ Object 



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# File 'lib/kumi/ir/df/ops/axis_cross.rb', line 28

def axis = attributes[:axis]

#source ⇒ Object 



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# File 'lib/kumi/ir/df/ops/axis_cross.rb', line 27

def source = inputs.first

#source_axis ⇒ Object 



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# File 'lib/kumi/ir/df/ops/axis_cross.rb', line 29

def source_axis = attributes[:source_axis]