Examples of Tensor

cc.redberry.core.tensor.Tensor

Abstract class which defines common tensor methods and properties.
@author Dmitry Bolotin @author Stanislav Poslavsky @see cc.redberry.core.indices.Indices @see cc.redberry.core.context.ToStringMode @see cc.redberry.core.context.Context
com.github.neuralnetworks.tensor.Tensor
N-dimensional tensor. For example 2-dim tensor is a matrix
com.github.neuralnetworks.util.Tensor
N-dimensional tensor. For example 2-dim tensor is a matrix

Examples of com.github.neuralnetworks.tensor.Tensor

  }
    }


    @Test
    public void testSoftMax() {
  Tensor t = TensorFactory.tensor(5, 4, 2);
  IntStream.range(0, t.getElements().length).forEach(i -> t.getElements()[i] = i + 1);
  Matrix m = TensorFactory.tensor(t, new int[][] { { 1, 1, 1 }, { 3, 2, 1 } });
  m.set(1, 0, 0);
  m.set(2, 1, 0);
  m.set(3, 2, 0);
  m.set(4, 0, 1);

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Examples of com.github.neuralnetworks.tensor.Tensor

  assertEquals(6 / 15f, m.get(2, 1), 0);
    }


    @Test
    public void testTensor() {
  Tensor t = TensorFactory.tensor(2, 2, 2);
  float[] elements = t.getElements();


  assertEquals(8, elements.length, 0);


  t.set(1, 0, 0, 0);
  t.set(2, 0, 0, 1);
  t.set(3, 0, 1, 0);
  t.set(4, 0, 1, 1);
  t.set(5, 1, 0, 0);
  t.set(6, 1, 0, 1);
  t.set(7, 1, 1, 0);
  t.set(8, 1, 1, 1);


  Iterator<Integer> it = t.iterator();
  for (int i = 0; i < elements.length && it.hasNext(); i++) {
      assertEquals(i + 1, elements[i], 0);
      assertEquals(i + 1, elements[it.next()], 0);
  }


  t = TensorFactory.tensor(5, 5, 5);
  assertEquals(25, t.getDimensionElementsDistance(0), 0);
  assertEquals(5, t.getDimensionElementsDistance(1), 0);
  assertEquals(1, t.getDimensionElementsDistance(2), 0);


  elements = t.getElements();


  for (int i = 0; i < elements.length; i++) {
      elements[i] = i + 1;
  }


  Tensor t2 = TensorFactory.tensor(t, new int[][] { { 3, 0, 0 }, { 4, 4, 4 } });
  assertEquals(75, t2.getStartIndex(), 0);
  assertEquals(124, t2.getEndIndex(), 0);
  assertEquals(25, t2.getDimensionElementsDistance(0), 0);
  assertEquals(5, t2.getDimensionElementsDistance(1), 0);
  assertEquals(1, t2.getDimensionElementsDistance(2), 0);
  assertEquals(50, t2.getSize(), 0);
  assertEquals(76, t2.get(0, 0, 0), 0);
  assertEquals(77, t2.get(0, 0, 1), 0);
  assertEquals(81, t2.get(0, 1, 0), 0);
  assertEquals(101, t2.get(1, 0, 0), 0);
  assertEquals(106, t2.get(1, 1, 0), 0);
  assertEquals(112, t2.get(1, 2, 1), 0);


  Tensor[] tarr = TensorFactory.tensor(new int[] { 2, 2, 2 }, new int[] { 3, 3 });
  assertEquals(17, tarr[0].getElements().length, 0);
  assertEquals(0, tarr[0].getStartOffset(), 0);
  assertEquals(8, tarr[1].getStartOffset(), 0);

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Examples of com.github.neuralnetworks.tensor.Tensor


  AparapiConv2D conv = new AparapiConv2DFF(c, vp, c.getOutputLayer());
  conv.calculate(c, vp, c.getOutputLayer());


  // most simple case
  Tensor o = vp.get(c.getOutputLayer());


  assertEquals(164, o.get(0, 0, 0, 0), 0);
  assertEquals(184, o.get(0, 0, 1, 0), 0);
  assertEquals(224, o.get(0, 1, 0, 0), 0);
  assertEquals(244, o.get(0, 1, 1, 0), 0);
    }

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Examples of com.github.neuralnetworks.tensor.Tensor

  }


  AparapiConv2D conv = new AparapiConv2DFF(c, vp, c.getOutputLayer());
  conv.calculate(c, vp, c.getOutputLayer());


  Tensor o = vp.get(c.getOutputLayer());


  assertEquals(164, o.get(0, 0, 0, 0), 0);
  assertEquals(184, o.get(0, 0, 1, 0), 0);
  assertEquals(224, o.get(0, 1, 0, 0), 0);
  assertEquals(244, o.get(0, 1, 1, 0), 0);
  assertEquals(164, o.get(1, 0, 0, 0), 0);
  assertEquals(184, o.get(1, 0, 1, 0), 0);
  assertEquals(224, o.get(1, 1, 0, 0), 0);
  assertEquals(244, o.get(1, 1, 1, 0), 0);
    }

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Examples of com.github.neuralnetworks.tensor.Tensor


  Set<Layer> calculatedLayers = new HashSet<>();
  calculatedLayers.add(nn.getInputLayer());
  nn.getLayerCalculator().calculate(nn, nn.getOutputLayer(), calculatedLayers, vp);


  Tensor o = vp.get(nn.getOutputLayer());


  assertEquals(244, o.get(0, 0, 0, 0), 0);
  assertEquals(244, o.get(1, 0, 0, 0), 0);
    }

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Examples of com.github.neuralnetworks.tensor.Tensor

  float[] src = new float[] { 0.5f, 1, 1, 2, 1.5f, 3, 2, 4, 2.5f, 5, 3, 6, 3.5f, 7, 4f, 8, 4.5f, 9, 5f, 10, 5.5f, 11, 6f, 12, 6.5f, 13, 7f, 14, 8f, 16, 7.5f, 15, 8.5f, 17, 9f, 18, 9.5f, 19, 10f, 20, 10.5f, 21, 11f, 22, 11.5f, 23, 12f, 24, 12.5f, 25, 13f, 26, 13.5f, 27, 14f, 28, 14.5f, 29, 15f, 30, 16f, 32, 15.5f, 31 };
  System.arraycopy(src, 0, vp.get(c.getInputLayer()).getElements(), vp.get(c.getInputLayer()).getStartIndex(), src.length);


  calc.calculate(connections, vp, c.getOutputLayer());


  Tensor o = vp.get(c.getOutputLayer());


  assertEquals(3, o.get(0, 0, 0, 0), 0);
  assertEquals(4, o.get(0, 0, 1, 0), 0);
  assertEquals(7, o.get(0, 1, 0, 0), 0);
  assertEquals(8, o.get(0, 1, 1, 0), 0);
  assertEquals(11, o.get(1, 0, 0, 0), 0);
  assertEquals(12, o.get(1, 0, 1, 0), 0);
  assertEquals(15, o.get(1, 1, 0, 0), 0);
  assertEquals(16, o.get(1, 1, 1, 0), 0);


  assertEquals(6, o.get(0, 0, 0, 1), 0);
  assertEquals(8, o.get(0, 0, 1, 1), 0);
  assertEquals(14, o.get(0, 1, 0, 1), 0);
  assertEquals(16, o.get(0, 1, 1, 1), 0);
  assertEquals(22, o.get(1, 0, 0, 1), 0);
  assertEquals(24, o.get(1, 0, 1, 1), 0);
  assertEquals(30, o.get(1, 1, 0, 1), 0);
  assertEquals(32, o.get(1, 1, 1, 1), 0);
    }

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Examples of com.github.neuralnetworks.tensor.Tensor

  float[] src = new float[] { 0.5f, 1, 1, 2, 1.5f, 3, 2, 4, 2.5f, 5, 3, 6, 3.5f, 7, 4f, 8, 4.5f, 9, 5f, 10, 5.5f, 11, 6f, 12, 6.5f, 13, 7f, 14, 8f, 16, 7.5f, 15, 8.5f, 17, 9f, 18, 9.5f, 19, 10f, 20, 10.5f, 21, 11f, 22, 11.5f, 23, 12f, 24, 12.5f, 25, 13f, 26, 13.5f, 27, 14f, 28, 14.5f, 29, 15f, 30, 16f, 32, 15.5f, 31 };
  System.arraycopy(src, 0, vp.get(c.getInputLayer()).getElements(), vp.get(c.getInputLayer()).getStartIndex(), src.length);


  calc.calculate(connections, vp, c.getOutputLayer());


  Tensor o = vp.get(c.getOutputLayer());


  assertEquals(1.75, o.get(0, 0, 0, 0), 0);
  assertEquals(2.75, o.get(0, 0, 1, 0), 0);
  assertEquals(5.75, o.get(0, 1, 0, 0), 0);
  assertEquals(6.75, o.get(0, 1, 1, 0), 0);
  assertEquals(9.75, o.get(1, 0, 0, 0), 0);
  assertEquals(10.75, o.get(1, 0, 1, 0), 0);
  assertEquals(13.75, o.get(1, 1, 0, 0), 0);
  assertEquals(14.75, o.get(1, 1, 1, 0), 0);


  assertEquals(3.5, o.get(0, 0, 0, 1), 0);
  assertEquals(5.5, o.get(0, 0, 1, 1), 0);
  assertEquals(11.5, o.get(0, 1, 0, 1), 0);
  assertEquals(13.5, o.get(0, 1, 1, 1), 0);
  assertEquals(19.5, o.get(1, 0, 0, 1), 0);
  assertEquals(21.5, o.get(1, 0, 1, 1), 0);
  assertEquals(27.5, o.get(1, 1, 0, 1), 0);
  assertEquals(29.5, o.get(1, 1, 1, 1), 0);
    }

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Examples of com.github.neuralnetworks.tensor.Tensor

  System.arraycopy(src, 0, vp.get(c.getInputLayer()).getElements(), vp.get(c.getInputLayer()).getStartIndex(), src.length);


  AparapiStochasticPooling2D calc = new AparapiStochasticPooling2D();
  calc.calculate(connections, vp, c.getOutputLayer());


  Tensor t = vp.get(c.getOutputLayer());


  assertEquals(2.08, t.get(0, 0, 0, 0), 0.01);
  assertEquals(2.08, t.get(0, 0, 0, 1), 0.01);
    }

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Examples of com.github.neuralnetworks.tensor.Tensor


  BackpropagationMaxPooling2D bp = new BackpropagationMaxPooling2D();
  bp.setActivations(activations);
  bp.calculate(connections, vp, c.getInputLayer());


  Tensor a = activations.get(c.getInputLayer());
  Tensor bpo = vp.get(c.getInputLayer());


  assertEquals(true, bpo.get(0, 1, 1, 0) == a.get(0, 1, 1, 0));
  assertEquals(true, bpo.get(0, 1, 3, 0) == a.get(0, 1, 3, 0));
  assertEquals(true, bpo.get(0, 3, 1, 0) == a.get(0, 3, 1, 0));
  assertEquals(true, bpo.get(0, 3, 2, 0) == a.get(0, 3, 2, 0));
  assertEquals(true, bpo.get(0, 1, 1, 1) == a.get(0, 1, 1, 1));
  assertEquals(true, bpo.get(0, 1, 3, 1) == a.get(0, 1, 3, 1));
  assertEquals(true, bpo.get(0, 3, 1, 1) == a.get(0, 3, 1, 1));
  assertEquals(true, bpo.get(0, 3, 2, 1) == a.get(0, 3, 2, 1));
  assertEquals(true, bpo.get(1, 1, 1, 0) == a.get(1, 1, 1, 0));
  assertEquals(true, bpo.get(1, 1, 3, 0) == a.get(1, 1, 3, 0));
  assertEquals(true, bpo.get(1, 3, 1, 0) == a.get(1, 3, 1, 0));
  assertEquals(true, bpo.get(1, 3, 2, 0) == a.get(1, 3, 2, 0));
  assertEquals(true, bpo.get(1, 1, 1, 1) == a.get(1, 1, 1, 1));
  assertEquals(true, bpo.get(1, 1, 3, 1) == a.get(1, 1, 3, 1));
  assertEquals(true, bpo.get(1, 3, 1, 1) == a.get(1, 3, 1, 1));
  assertEquals(true, bpo.get(1, 3, 2, 1) == a.get(1, 3, 2, 1));
    }

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Examples of com.github.neuralnetworks.tensor.Tensor

  ValuesProvider vp = TensorFactory.tensorProvider(c, 2, true);
  TensorFactory.copy(activations.get(c.getOutputLayer()), vp.get(c.getOutputLayer()));


  bp.calculate(connections, vp, c.getInputLayer());


  Tensor o = activations.get(c.getOutputLayer());
  Tensor bpo = vp.get(c.getInputLayer());
  assertEquals(true, bpo.get(0, 0, 0, 0) == o.get(0, 0, 0, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(0, 0, 2, 0) == o.get(0, 0, 1, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(0, 2, 0, 0) == o.get(0, 1, 0, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(0, 2, 2, 0) == o.get(0, 1, 1, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 0, 0, 0) == o.get(1, 0, 0, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 0, 2, 0) == o.get(1, 0, 1, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 2, 0, 0) == o.get(1, 1, 0, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 2, 2, 0) == o.get(1, 1, 1, 0) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(0, 0, 0, 1) == o.get(0, 0, 0, 1) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(0, 0, 2, 1) == o.get(0, 0, 1, 1) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(0, 2, 0, 1) == o.get(0, 1, 0, 1) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(0, 2, 2, 1) == o.get(0, 1, 1, 1) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 0, 0, 1) == o.get(1, 0, 0, 1) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 0, 2, 1) == o.get(1, 0, 1, 1) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 2, 0, 1) == o.get(1, 1, 0, 1) / c.getSubsamplingRegionLength());
  assertEquals(true, bpo.get(1, 2, 2, 1) == o.get(1, 1, 1, 1) / c.getSubsamplingRegionLength());
    }

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