99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
|
/*******************************************************************************
|
||
|
|
* Copyright (c) 2015-2018 Skymind, Inc.
|
||
|
|
*
|
||
|
|
* This program and the accompanying materials are made available under the
|
||
|
|
* terms of the Apache License, Version 2.0 which is available at
|
||
|
|
* https://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.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
//
|
||
|
|
// @created by George A. Shulinok <sgazeos@gmail.com> 4/18/2019
|
||
|
|
//
|
||
|
|
|
||
|
|
#ifndef LIBND4J_HEADERS_BARNES_HUT_TSNE_H
|
||
|
|
#define LIBND4J_HEADERS_BARNES_HUT_TSNE_H
|
||
|
|
|
||
|
|
#include <ops/declarable/headers/common.h>
|
||
|
|
|
||
|
|
namespace nd4j {
|
||
|
|
namespace ops {
|
||
|
|
/**
|
||
|
|
* This operation used as helper with BarnesHutTsne class
|
||
|
|
* to compute edge forces using barnes hut
|
||
|
|
*
|
||
|
|
* Expected input:
|
||
|
|
* 0: 1D row-vector (or with shape (1, m))
|
||
|
|
* 1: 1D integer vector with slice nums
|
||
|
|
* 2: 1D float-point values vector with same shape as above
|
||
|
|
*
|
||
|
|
* Int args:
|
||
|
|
* 0: N - number of slices
|
||
|
|
*
|
||
|
|
* Output:
|
||
|
|
* 0: 1D vector with edge forces for input and values
|
||
|
|
*/
|
||
|
|
#if NOT_EXCLUDED(OP_barnes_edge_forces)
|
||
|
|
DECLARE_CUSTOM_OP(barnes_edge_forces, 4, 1, false, 0, 1);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This operation used as helper with BarnesHutTsne class
|
||
|
|
* to Symmetrize the value matrix
|
||
|
|
*
|
||
|
|
* Expected input:
|
||
|
|
* 0: 1D int row-vector
|
||
|
|
* 1: 1D int col-vector
|
||
|
|
* 2: 1D float vector with values
|
||
|
|
*
|
||
|
|
* Output:
|
||
|
|
* 0: symmetric 2D matrix with given values on given places
|
||
|
|
*/
|
||
|
|
#if NOT_EXCLUDED(OP_barnes_symmetrized)
|
||
|
|
DECLARE_CUSTOM_OP(barnes_symmetrized, 3, 3, false, 0, -1);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This operation used as helper with BranesHutTsne class
|
||
|
|
* to compute x = x + 2 * yGrads / abs(yGrads) != yIncs / abs(yIncs)
|
||
|
|
*
|
||
|
|
* Expected input:
|
||
|
|
* 0: input tensor
|
||
|
|
* 1: input gradient
|
||
|
|
* 2: gradient step tensor
|
||
|
|
*
|
||
|
|
* Output:
|
||
|
|
* 0: result of expression above
|
||
|
|
*/
|
||
|
|
#if NOT_EXCLUDED(OP_barnes_gains)
|
||
|
|
DECLARE_OP(barnes_gains, 3, 1, true);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This operation used as helper with Cell class
|
||
|
|
* to check vals in given set
|
||
|
|
*
|
||
|
|
* Expected input:
|
||
|
|
* 0: 1D float row-vector (corners)
|
||
|
|
* 1: 1D float col-vector (widths)
|
||
|
|
* 2: 1D float vector (point)
|
||
|
|
*
|
||
|
|
* Output:
|
||
|
|
* 0: bool val
|
||
|
|
*/
|
||
|
|
#if NOT_EXCLUDED(OP_cell_contains)
|
||
|
|
DECLARE_CUSTOM_OP(cell_contains, 3, 1, false, 0, 1);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // LIBND4J_HEADERS_BARNES_HUT_TSNE_H
|