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2025-02-12 ea42ff3ebee1eeb3fb29423aa848a249441db81c

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/**
 * @license
 * Copyright 2021 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 { ENGINE } from '../../engine';
import { SparseFillEmptyRows } from '../../kernel_names';
import { convertToTensor } from '../../tensor_util_env';
import { op } from '../operation';
/**
 * The input SparseTensor is represented via the map of inputs {`indices`,
 * `values`, `denseShape`}. The output SparseTensor has the same `denseShape`
 * but with indices `outputIndices` and values `outputValues`. This op inserts a
 * single entry for every row that doesn't have any values. The index is created
 * as `[row, 0, ..., 0]` and the inserted value is `defaultValue`.
 *
 * For example, suppose `spInput` has shape [5, 6] and non-empty values:
 * [0, 1]: a
 * [0, 3]: b
 * [2, 0]: c
 * [3, 1]: d
 *
 * Rows 1 and 4 are empty, so the output will be of shape [5, 6] with values:
 * [0, 1]: a
 * [0, 3]: b
 * [1, 0]: `defaultValue`
 * [2, 0]: c
 * [3, 1]: d
 * [4, 0]: `defaultValue`
 *
 * The output SparseTensor will be in row-major order and will have the same
 * shape as the input.
 *
 * This op also returns an indicator vector shaped [dense_shape[0]] such that
 * emptyRowIndicator[i] = True iff row i was an empty row.
 *
 * And a reverse index map vector shaped [indices.shape[0]] that is used during
 * backpropagation, reverseIndexMap[i] = outi s.t. indices[i, j] ==
 * outputIndices[outi, j] for all j
 *
 * ```js
 * const result = tf.sparse.sparseFillEmptyRows(
 *   [[0, 0], [1, 0], [1, 3], [1, 4], [3, 2], [3, 3]],
 *   [0, 10, 13, 14, 32, 33], [5, 6], -1);
 * console.log(result);
 * result['outputIndices'].print(); // [[0, 0], [1, 0], [1, 3], [1, 4],
 *                                  //  [2, 0], [3, 2], [3, 3], [4, 0]]
 * result['outputValues'].print(); // [0, 10, 13, 14,-1, 32, 33, -1]
 * result['emptyRowIndicator'].print(); // [false, false, true, false, true]
 * result['reverseIndexMap'].print(); // [0, 1, 2, 3, 5, 6]
 * ```
 * @param indices: 2-D. The indices of the sparse tensor.
 * @param values: 1-D. The values of the sparse tensor.
 * @param denseShape: 1-D. The shape of the sparse tensor.
 * @param defaultValue: 0-D. Default value to insert into location [row, 0, ...,
 *     0] for rows missing from the input sparse tensor.
 * @return A map with the following properties:
 *     - outputIndices
 *     - outputValues: 1-D. The values of the filled sparse tensor.
 *     - emptyRowIndicator: 1-D. Whether the dense row was missing in the input
 * sparse tensor.
 *     - reverseIndexMap: 1-D. A map from the input indices to the output
 * indices.
 * @doc {heading: 'Operations', subheading: 'Sparse'}
 */
function sparseFillEmptyRows_(indices, values, denseShape, defaultValue) {
    const $indices = convertToTensor(indices, 'indices', 'sparseFillEmptyRows', 'int32');
    const $values = convertToTensor(values, 'values', 'sparseFillEmptyRows');
    const $denseShape = convertToTensor(denseShape, 'denseShape', 'sparseFillEmptyRows', 'int32');
    const $defaultValue = convertToTensor(defaultValue, 'defaultValue', 'sparseFillEmptyRows', $values.dtype);
    if ($indices.rank !== 2) {
        throw new Error(`Indices should be Tensor2D but received shape
        ${$indices.shape}`);
    }
    if ($values.rank !== 1) {
        throw new Error(`Values should be Tensor1D but received shape ${$values.shape}`);
    }
    if ($denseShape.rank !== 1) {
        throw new Error(`Dense shape should be Tensor1D but received shape ${$denseShape.shape}`);
    }
    if ($defaultValue.rank !== 0) {
        throw new Error(`Default value should be a scalar but received shape ${$defaultValue.shape}`);
    }
    const inputs = {
        indices: $indices,
        values: $values,
        denseShape: $denseShape,
        defaultValue: $defaultValue
    };
    const result = ENGINE.runKernel(SparseFillEmptyRows, inputs);
    return {
        outputIndices: result[0],
        outputValues: result[1],
        emptyRowIndicator: result[2],
        reverseIndexMap: result[3]
    };
}
export const sparseFillEmptyRows = /* @__PURE__ */ op({ sparseFillEmptyRows_ });
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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 {ENGINE} from '../../engine';\nimport {SparseFillEmptyRows, SparseFillEmptyRowsInputs} from '../../kernel_names';\nimport {Scalar, Tensor, Tensor1D, Tensor2D} from '../../tensor';\nimport {NamedTensorMap} from '../../tensor_types';\nimport {convertToTensor} from '../../tensor_util_env';\nimport {ScalarLike, TensorLike} from '../../types';\nimport {op} from '../operation';\n\n/**\n * The input SparseTensor is represented via the map of inputs {`indices`,\n * `values`, `denseShape`}. The output SparseTensor has the same `denseShape`\n * but with indices `outputIndices` and values `outputValues`. This op inserts a\n * single entry for every row that doesn't have any values. The index is created\n * as `[row, 0, ..., 0]` and the inserted value is `defaultValue`.\n *\n * For example, suppose `spInput` has shape [5, 6] and non-empty values:\n * [0, 1]: a\n * [0, 3]: b\n * [2, 0]: c\n * [3, 1]: d\n *\n * Rows 1 and 4 are empty, so the output will be of shape [5, 6] with values:\n * [0, 1]: a\n * [0, 3]: b\n * [1, 0]: `defaultValue`\n * [2, 0]: c\n * [3, 1]: d\n * [4, 0]: `defaultValue`\n *\n * The output SparseTensor will be in row-major order and will have the same\n * shape as the input.\n *\n * This op also returns an indicator vector shaped [dense_shape[0]] such that\n * emptyRowIndicator[i] = True iff row i was an empty row.\n *\n * And a reverse index map vector shaped [indices.shape[0]] that is used during\n * backpropagation, reverseIndexMap[i] = outi s.t. indices[i, j] ==\n * outputIndices[outi, j] for all j\n *\n * ```js\n * const result = tf.sparse.sparseFillEmptyRows(\n *   [[0, 0], [1, 0], [1, 3], [1, 4], [3, 2], [3, 3]],\n *   [0, 10, 13, 14, 32, 33], [5, 6], -1);\n * console.log(result);\n * result['outputIndices'].print(); // [[0, 0], [1, 0], [1, 3], [1, 4],\n *                                  //  [2, 0], [3, 2], [3, 3], [4, 0]]\n * result['outputValues'].print(); // [0, 10, 13, 14,-1, 32, 33, -1]\n * result['emptyRowIndicator'].print(); // [false, false, true, false, true]\n * result['reverseIndexMap'].print(); // [0, 1, 2, 3, 5, 6]\n * ```\n * @param indices: 2-D. The indices of the sparse tensor.\n * @param values: 1-D. The values of the sparse tensor.\n * @param denseShape: 1-D. The shape of the sparse tensor.\n * @param defaultValue: 0-D. Default value to insert into location [row, 0, ...,\n *     0] for rows missing from the input sparse tensor.\n * @return A map with the following properties:\n *     - outputIndices\n *     - outputValues: 1-D. The values of the filled sparse tensor.\n *     - emptyRowIndicator: 1-D. Whether the dense row was missing in the input\n * sparse tensor.\n *     - reverseIndexMap: 1-D. A map from the input indices to the output\n * indices.\n * @doc {heading: 'Operations', subheading: 'Sparse'}\n */\nfunction sparseFillEmptyRows_(\n    indices: Tensor2D|TensorLike, values: Tensor1D|TensorLike,\n    denseShape: Tensor1D|TensorLike,\n    defaultValue: Scalar|ScalarLike): NamedTensorMap {\n  const $indices =\n      convertToTensor(indices, 'indices', 'sparseFillEmptyRows', 'int32');\n  const $values = convertToTensor(values, 'values', 'sparseFillEmptyRows');\n  const $denseShape =\n      convertToTensor(denseShape, 'denseShape', 'sparseFillEmptyRows', 'int32');\n  const $defaultValue = convertToTensor(\n      defaultValue, 'defaultValue', 'sparseFillEmptyRows', $values.dtype);\n\n  if ($indices.rank !== 2) {\n    throw new Error(`Indices should be Tensor2D but received shape\n        ${$indices.shape}`);\n  }\n  if ($values.rank !== 1) {\n    throw new Error(\n        `Values should be Tensor1D but received shape ${$values.shape}`);\n  }\n  if ($denseShape.rank !== 1) {\n    throw new Error(`Dense shape should be Tensor1D but received shape ${\n        $denseShape.shape}`);\n  }\n  if ($defaultValue.rank !== 0) {\n    throw new Error(`Default value should be a scalar but received shape ${\n        $defaultValue.shape}`);\n  }\n\n  const inputs: SparseFillEmptyRowsInputs = {\n    indices: $indices,\n    values: $values,\n    denseShape: $denseShape,\n    defaultValue: $defaultValue\n  };\n\n  const result: Tensor[] = ENGINE.runKernel(SparseFillEmptyRows, inputs as {});\n  return {\n    outputIndices: result[0],\n    outputValues: result[1],\n    emptyRowIndicator: result[2],\n    reverseIndexMap: result[3]\n  };\n}\n\nexport const sparseFillEmptyRows = /* @__PURE__ */ op({sparseFillEmptyRows_});\n"]}