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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.language.process;
import com.yahoo.language.Language;
import com.yahoo.tensor.Tensor;
import com.yahoo.tensor.TensorType;
import java.util.List;
/**
* An encoder converts a text string to a tensor or list of tokens
*
* @author bratseth
*/
public interface Encoder {
/**
* Encodes text into tokens in a list of ids.
*
* @param text the text to encode
* @param language the language of the text, or UNKNOWN to use language independent encoding
* @return the text encoded to a list of segment ids
* @throws IllegalArgumentException if the language is not supported by this encoder
*/
List<Integer> encode(String text, Language language);
/**
* Encodes text into tokens in a tensor.
* The information contained in the encoding may depend on the tensor type.
*
* @param text the text to encode
* @param language the language of the text, or UNKNOWN to use language independent encoding
* @param tensorType the type of the ttensor to be returned
* @return the tex encoded into a tensor of the supplied type
* @throws IllegalArgumentException if the language or tensor type is not supported by this encoder
*/
Tensor encode(String text, Language language, TensorType tensorType);
}
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