org.deeplearning4j.text.tokenization.tokenizerfactory.NGramTokenizerFactory 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.text.tokenization.tokenizerfactory;
import org.deeplearning4j.text.tokenization.tokenizer.NGramTokenizer;
import org.deeplearning4j.text.tokenization.tokenizer.TokenPreProcess;
import org.deeplearning4j.text.tokenization.tokenizer.Tokenizer;
import java.io.InputStream;
/**
* @author sonali
*/
public class NGramTokenizerFactory implements TokenizerFactory {
private TokenPreProcess preProcess;
private Integer minN = 1;
private Integer maxN = 1;
private TokenizerFactory tokenizerFactory;
public NGramTokenizerFactory(TokenizerFactory tokenizerFactory, Integer minN, Integer maxN) {
this.tokenizerFactory = tokenizerFactory;
this.minN = minN;
this.maxN = maxN;
}
@Override
public Tokenizer create(String toTokenize) {
Tokenizer t1 = tokenizerFactory.create(toTokenize);
t1.setTokenPreProcessor(preProcess);
Tokenizer ret = new NGramTokenizer(t1, minN, maxN);
return ret;
}
@Override
public Tokenizer create(InputStream toTokenize) {
throw new UnsupportedOperationException();
}
@Override
public void setTokenPreProcessor(TokenPreProcess preProcessor) {
this.preProcess = preProcessor;
}
/**
* Returns TokenPreProcessor set for this TokenizerFactory instance
*
* @return TokenPreProcessor instance, or null if no preprocessor was defined
*/
@Override
public TokenPreProcess getTokenPreProcessor() {
return preProcess;
}
}