src/main/java/org/nlpub/watset/cli/EmbeddingCommand.java
/*
* Copyright 2020 Dmitry Ustalov
*
* 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.
*
*/
package org.nlpub.watset.cli;
import com.beust.jcommander.Parameters;
import com.beust.jcommander.ParametersDelegate;
import org.jgrapht.Graphs;
import org.nlpub.watset.util.Matrices;
import org.nlpub.watset.util.Word2VecFormat;
import java.io.IOException;
import java.io.UncheckedIOException;
/**
* A command that computes graph embeddings.
*/
@Parameters(commandDescription = "Graph Embeddings")
class EmbeddingCommand extends Command {
/**
* The number of clusters parameters.
*/
@SuppressWarnings("CanBeFinal")
@ParametersDelegate
public Command.FixedClustersParameters fixed = new Command.FixedClustersParameters();
/**
* Create an instance of command.
*
* @param parameters the parameters
*/
public EmbeddingCommand(MainParameters parameters) {
super(parameters);
}
@Override
public void run() {
final var graph = getGraph();
final var mapping = Graphs.getVertexToIntegerMapping(graph);
final var embedding = Matrices.computeSpectralEmbedding(graph, mapping, fixed.k);
try (final var writer = newOutputWriter()) {
Word2VecFormat.write(writer, embedding, Word2VecFormat.SpaceStrategy.REPLACE);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}