org.deeplearning4j.models.glove.count.ASCIICoOccurrenceReader Maven / Gradle / Ivy
/*******************************************************************************
* 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
******************************************************************************/
package org.deeplearning4j.models.glove.count;
import lombok.NonNull;
import org.deeplearning4j.models.sequencevectors.sequence.SequenceElement;
import org.deeplearning4j.models.word2vec.wordstore.VocabCache;
import org.deeplearning4j.text.sentenceiterator.BasicLineIterator;
import org.deeplearning4j.text.sentenceiterator.PrefetchingSentenceIterator;
import org.deeplearning4j.text.sentenceiterator.SentenceIterator;
import java.io.File;
import java.io.PrintWriter;
/**
* @author [email protected]
*/
public class ASCIICoOccurrenceReader implements CoOccurenceReader {
private File file;
private PrintWriter writer;
private SentenceIterator iterator;
private VocabCache vocabCache;
public ASCIICoOccurrenceReader(@NonNull File file, @NonNull VocabCache vocabCache) {
this.vocabCache = vocabCache;
this.file = file;
try {
iterator = new PrefetchingSentenceIterator.Builder(new BasicLineIterator(file)).build();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public boolean hasMoreObjects() {
return iterator.hasNext();
}
/**
* Returns next CoOccurrenceWeight object
*
* PLEASE NOTE: This method can return null value.
* @return
*/
@Override
public CoOccurrenceWeight nextObject() {
String line = iterator.nextSentence();
if (line == null || line.isEmpty()) {
return null;
}
String[] strings = line.split(" ");
CoOccurrenceWeight object = new CoOccurrenceWeight<>();
object.setElement1(vocabCache.elementAtIndex(Integer.valueOf(strings[0])));
object.setElement2(vocabCache.elementAtIndex(Integer.valueOf(strings[1])));
object.setWeight(Double.parseDouble(strings[2]));
return object;
}
@Override
public void finish() {
try {
if (writer != null) {
writer.flush();
writer.close();
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}