blob: 27f73d15e544c46c81d7286c1e3e00fdc6e677fb (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// 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 {
/** An instance of this which throws IllegalStateException if attempted used */
Encoder throwsOnUse = new FailingEncoder();
/**
* 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);
class FailingEncoder implements Encoder {
@Override
public List<Integer> encode(String text, Language language) {
throw new IllegalStateException("No encoder has been configured");
}
@Override
public Tensor encode(String text, Language language, TensorType tensorType) {
throw new IllegalStateException("No encoder has been configured");
}
}
}
|
