/** * @license * Copyright 2020 Google LLC. All Rights Reserved. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ============================================================================= */ import * as tf from '../index'; import { ALL_ENVS, describeWithFlags } from '../jasmine_util'; import { expectArraysClose } from '../test_util'; describeWithFlags('oneHot', ALL_ENVS, () => { it('Depth 1 throws error', () => { const indices = tf.tensor1d([0, 0, 0], 'int32'); expect(() => tf.oneHot(indices, 1)).toThrowError(); }); it('Depth 2, diagonal', async () => { const indices = tf.tensor1d([0, 1], 'int32'); const res = tf.oneHot(indices, 2); expect(res.shape).toEqual([2, 2]); expectArraysClose(await res.data(), [1, 0, 0, 1]); }); it('Scalar input as Tensor', async () => { const indices = tf.scalar(2, 'int32'); const res = tf.oneHot(indices, 4); expect(res.shape).toEqual([4]); expectArraysClose(await res.data(), [0, 0, 1, 0]); }); it('Scalar input as number', async () => { const indices = 2; const res = tf.oneHot(indices, 4); expect(res.shape).toEqual([4]); expectArraysClose(await res.data(), [0, 0, 1, 0]); }); it('oneHot with chaining compiles', () => { const indices = 2; // Asserts that there is no compiler error. tf.oneHot(indices, 4).toFloat(); }); it('Depth 2, transposed diagonal', async () => { const indices = tf.tensor1d([1, 0], 'int32'); const res = tf.oneHot(indices, 2); expect(res.shape).toEqual([2, 2]); expectArraysClose(await res.data(), [0, 1, 1, 0]); }); it('Depth 3, 4 events', async () => { const indices = tf.tensor1d([2, 1, 2, 0], 'int32'); const res = tf.oneHot(indices, 3); expect(res.shape).toEqual([4, 3]); expectArraysClose(await res.data(), [0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0]); }); it('Out of range events do not trigger onValue', async () => { const indices = tf.tensor1d([-1, 5, 12345], 'int32'); const res = tf.oneHot(indices, 5); expect(res.shape).toEqual([3, 5]); expectArraysClose(await res.data(), [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]); }); it('Depth 2 onValue=3, offValue=-2', async () => { const indices = tf.tensor1d([0, 1], 'int32'); const res = tf.oneHot(indices, 2, 3, -2); expect(res.shape).toEqual([2, 2]); expectArraysClose(await res.data(), [3, -2, -2, 3]); }); it('indices not int32 throws error', () => { const indices = tf.tensor1d([0, 1], 'float32'); expect(() => tf.oneHot(indices, 2)).toThrowError(); }); it('check output dtype', () => { const expectedType = 'int32'; const indices = tf.tensor1d([0, 1], 'int32'); const res = tf.oneHot(indices, 2); expect(res.dtype).toEqual(expectedType); }); it('check specified output dtype', () => { const expectedType = 'float32'; const indices = tf.tensor1d([0, 1], 'int32'); const res = tf.oneHot(indices, 2, 1, 0, 'float32'); expect(res.dtype).toEqual(expectedType); }); it('oneHot accepts a tensor-like object', async () => { const res = tf.oneHot([0, 1], 2); expect(res.shape).toEqual([2, 2]); expectArraysClose(await res.data(), [1, 0, 0, 1]); }); it('has gradient', async () => { const a = tf.tensor1d([0, 1, 2], 'int32'); const dy = tf.ones([3, 3], 'float32'); const da = tf.grad((x) => tf.oneHot(x, 3))(a, dy); expect(da.dtype).toBe('float32'); expect(da.shape).toEqual([3]); expectArraysClose(await da.data(), [0, 0, 0]); }); it('gradient with clones', async () => { const a = tf.tensor1d([0, 1, 2], 'int32'); const dy = tf.ones([3, 3], 'float32'); const da = tf.grad((x) => tf.oneHot(x.clone(), 3).clone())(a, dy); expect(da.dtype).toBe('float32'); expect(da.shape).toEqual([3]); expectArraysClose(await da.data(), [0, 0, 0]); }); it('gradient when indices is 3d', async () => { const a = tf.tensor3d([1, 2, 3, 4], [1, 2, 2], 'int32'); const dy = tf.ones([1, 2, 2, 3], 'float32'); const depth = 3; const da = tf.grad(x => tf.oneHot(x, depth))(a, dy); expect(da.dtype).toBe('float32'); expect(da.shape).toEqual(a.shape); expectArraysClose(await da.data(), [0, 0, 0, 0]); }); it('oneHot with indices as 2d', async () => { const indices = tf.tensor2d([[1, 3], [2, 3]], [2, 2], 'int32'); const depth = 4; const res = tf.oneHot(indices, depth); expect(res.shape).toEqual([2, 2, depth]); expectArraysClose(await res.data(), [0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1]); }); it('Supports chaining', async () => { const indices = tf.tensor2d([[1, 2, 3], [2, 3, 1], [4, 5, 6]], [3, 3], 'int32'); const depth = 6; const onValue = 3; const offValue = 7; const res = indices.oneHot(depth, onValue, offValue); expect(res.shape).toEqual([3, 3, 6]); expectArraysClose(await res.data(), [ 7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7 ]); }); }); //# 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* @license\n * Copyright 2020 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport * as tf from '../index';\nimport {ALL_ENVS, describeWithFlags} from '../jasmine_util';\nimport {expectArraysClose} from '../test_util';\n\ndescribeWithFlags('oneHot', ALL_ENVS, () => {\n  it('Depth 1 throws error', () => {\n    const indices = tf.tensor1d([0, 0, 0], 'int32');\n    expect(() => tf.oneHot(indices, 1)).toThrowError();\n  });\n\n  it('Depth 2, diagonal', async () => {\n    const indices = tf.tensor1d([0, 1], 'int32');\n    const res = tf.oneHot(indices, 2);\n\n    expect(res.shape).toEqual([2, 2]);\n    expectArraysClose(await res.data(), [1, 0, 0, 1]);\n  });\n\n  it('Scalar input as Tensor', async () => {\n    const indices = tf.scalar(2, 'int32');\n    const res = tf.oneHot(indices, 4);\n\n    expect(res.shape).toEqual([4]);\n    expectArraysClose(await res.data(), [0, 0, 1, 0]);\n  });\n\n  it('Scalar input as number', async () => {\n    const indices = 2;\n    const res = tf.oneHot(indices, 4);\n\n    expect(res.shape).toEqual([4]);\n    expectArraysClose(await res.data(), [0, 0, 1, 0]);\n  });\n\n  it('oneHot with chaining compiles', () => {\n    const indices = 2;\n    // Asserts that there is no compiler error.\n    tf.oneHot(indices, 4).toFloat();\n  });\n\n  it('Depth 2, transposed diagonal', async () => {\n    const indices = tf.tensor1d([1, 0], 'int32');\n    const res = tf.oneHot(indices, 2);\n\n    expect(res.shape).toEqual([2, 2]);\n    expectArraysClose(await res.data(), [0, 1, 1, 0]);\n  });\n\n  it('Depth 3, 4 events', async () => {\n    const indices = tf.tensor1d([2, 1, 2, 0], 'int32');\n    const res = tf.oneHot(indices, 3);\n\n    expect(res.shape).toEqual([4, 3]);\n    expectArraysClose(await res.data(), [0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0]);\n  });\n\n  it('Out of range events do not trigger onValue', async () => {\n    const indices = tf.tensor1d([-1, 5, 12345], 'int32');\n    const res = tf.oneHot(indices, 5);\n    expect(res.shape).toEqual([3, 5]);\n    expectArraysClose(\n        await res.data(), [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);\n  });\n\n  it('Depth 2 onValue=3, offValue=-2', async () => {\n    const indices = tf.tensor1d([0, 1], 'int32');\n    const res = tf.oneHot(indices, 2, 3, -2);\n\n    expect(res.shape).toEqual([2, 2]);\n    expectArraysClose(await res.data(), [3, -2, -2, 3]);\n  });\n\n  it('indices not int32 throws error', () => {\n    const indices = tf.tensor1d([0, 1], 'float32');\n    expect(() => tf.oneHot(indices, 2)).toThrowError();\n  });\n\n  it('check output dtype', () => {\n    const expectedType = 'int32';\n    const indices = tf.tensor1d([0, 1], 'int32');\n    const res = tf.oneHot(indices, 2);\n\n    expect(res.dtype).toEqual(expectedType);\n  });\n\n  it('check specified output dtype', () => {\n    const expectedType = 'float32';\n    const indices = tf.tensor1d([0, 1], 'int32');\n    const res = tf.oneHot(indices, 2, 1, 0, 'float32');\n\n    expect(res.dtype).toEqual(expectedType);\n  });\n\n  it('oneHot accepts a tensor-like object', async () => {\n    const res = tf.oneHot([0, 1], 2);\n    expect(res.shape).toEqual([2, 2]);\n    expectArraysClose(await res.data(), [1, 0, 0, 1]);\n  });\n\n  it('has gradient', async () => {\n    const a = tf.tensor1d([0, 1, 2], 'int32');\n    const dy = tf.ones([3, 3], 'float32');\n    const da = tf.grad((x: tf.Tensor1D) => tf.oneHot(x, 3))(a, dy);\n\n    expect(da.dtype).toBe('float32');\n    expect(da.shape).toEqual([3]);\n    expectArraysClose(await da.data(), [0, 0, 0]);\n  });\n\n  it('gradient with clones', async () => {\n    const a = tf.tensor1d([0, 1, 2], 'int32');\n    const dy = tf.ones([3, 3], 'float32');\n    const da =\n        tf.grad((x: tf.Tensor1D) => tf.oneHot(x.clone(), 3).clone())(a, dy);\n\n    expect(da.dtype).toBe('float32');\n    expect(da.shape).toEqual([3]);\n    expectArraysClose(await da.data(), [0, 0, 0]);\n  });\n\n  it('gradient when indices is 3d', async () => {\n    const a = tf.tensor3d([1, 2, 3, 4], [1, 2, 2], 'int32');\n    const dy = tf.ones([1, 2, 2, 3], 'float32');\n    const depth = 3;\n    const da = tf.grad(x => tf.oneHot(x, depth))(a, dy);\n    expect(da.dtype).toBe('float32');\n    expect(da.shape).toEqual(a.shape);\n    expectArraysClose(await da.data(), [0, 0, 0, 0]);\n  });\n\n  it('oneHot with indices as 2d', async () => {\n    const indices = tf.tensor2d([[1, 3], [2, 3]], [2, 2], 'int32');\n    const depth = 4;\n    const res = tf.oneHot(indices, depth);\n    expect(res.shape).toEqual([2, 2, depth]);\n    expectArraysClose(\n        await res.data(), [0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1]);\n  });\n\n  it('Supports chaining', async () => {\n    const indices =\n        tf.tensor2d([[1, 2, 3], [2, 3, 1], [4, 5, 6]], [3, 3], 'int32');\n    const depth = 6;\n    const onValue = 3;\n    const offValue = 7;\n    const res = indices.oneHot(depth, onValue, offValue);\n\n    expect(res.shape).toEqual([3, 3, 6]);\n    expectArraysClose(await res.data(), [\n      7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7,\n      7, 7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 3, 7, 7, 7, 7,\n      7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7, 3, 7, 7, 7, 7, 7, 7\n    ]);\n  });\n});\n"]}