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/*
 *  ******************************************************************************
 *  *
 *  *
 *  * 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.
 *  *
 *  *  See the NOTICE file distributed with this work for additional
 *  *  information regarding copyright ownership.
 *  * 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
 *  *****************************************************************************
 */

package org.deeplearning4j.graph.models.embeddings;

import org.nd4j.linalg.api.ndarray.INDArray;

public interface GraphVectorLookupTable {

    /**The size of the vector representations
     */
    int vectorSize();

    /** Reset (randomize) the weights. */
    void resetWeights();

    /** Conduct learning given a pair of vertices (in and out) */
    void iterate(int first, int second);

    /** Get the vector for the vertex with index idx */
    public INDArray getVector(int idx);

    /** Set the learning rate */
    void setLearningRate(double learningRate);

    /** Returns the number of vertices in the graph */
    int getNumVertices();

}