Comments (3)
I've been able to reproduce this and have isolated the issue to the trailing newline character. Apparently, this is rooted in FastText itself; however, the problem probably does not arise there because it operates on line-by-line input, whereas the Java API allows for arbitrary (multi-line) strings.
$ echo "Weak wifi otherwise all ok" | fasttext predict-prob model.bin - 5
__label__60 0.678738 __label__80 0.315212 __label__40 0.0055875 __label__100 0.000415088 __label__20 6.88466e-05
Now without trailing newline:
$ echo -n "Weak wifi otherwise all ok" | fasttext predict-prob model.bin - 5
__label__60 0.807072 __label__80 0.126261 __label__40 0.049052 __label__4 0.00411388 __label__5 0.00340998
Running on the command line, using the java package (created with mvn clean package
):
$ echo "Weak wifi otherwise all ok" | java -jar JFastText/target/jfasttext-0.4-jar-with-dependencies.jar predict-prob model.bin - 5
__label__60 0.678737 __label__80 0.315212 __label__40 0.0055875 __label__100 0.000415088 __label__20 6.88467e-05
Again, without trailing newline:
$ echo -n "Weak wifi otherwise all ok" | java -jar JFastText/target/jfasttext-0.4-jar-with-dependencies.jar predict-prob model.bin - 5
__label__60 0.807072 __label__80 0.126261 __label__40 0.049052 __label__4 0.00411388 __label__5 0.00340998
In the Java API, this is also reproducible. With trailing newline:
JFastText jft = new JFastText();
jft.loadModel("model.bin");
List<ProbLabel> predictions = jft.predictProba("Weak wifi otherwise all ok\n", 5);
Without trailing newline:
JFastText jft = new JFastText();
jft.loadModel("model.bin");
List<ProbLabel> predictions = jft.predictProba("Weak wifi otherwise all ok", 5);
The results are the same as above with echo
and echo -n
respectively.
from jfasttext.
This is actually a known issue in FastText, see:
facebookresearch/fastText#435 and facebookresearch/fastText#165
from jfasttext.
Based on what @carschno mentioned, I used this to get the right results:
public Map<String, Double> predictTopLabel(String text, int k) {
Map<String, Double> scoreMap = new LinkedHashMap<>();
text = StringUtils.trimToEmpty(text) + "\n";
final List<JFastText.ProbLabel> pl = model.predictProba(text, k);
for (JFastText.ProbLabel i : CollectionUtils.emptyIfNull(pl)) {
final double prob = Math.exp(i.logProb);
final double score = Math.round(prob * 100000000) / 100000000;
scoreMap.put(i.label, score);
}
return scoreMap;
}
from jfasttext.
Related Issues (20)
- Trying to load .ftz model and getting "wrong file format" HOT 6
- Cannot rebuilt jfasttext wrapper with Fasttext version 0.1.0 HOT 2
- This project has a bug that bothers me for many days
- How to build for multiple platforms?
- Dimension of pretrained vectors does not match -dim option HOT 1
- ERROR
- Model file has wrong file format!
- print-word-vectors command does not work HOT 1
- error C2664: cannot convert parameter from "std::istringstream" to "int32_t"
- JVM crashed when load model on Ubuntu HOT 2
- Support for test-label command
- Is the Fasttext dump supported in this wrapper ?
- the prediction is not same as predicted using official c++ HOT 2
- fastText ver 0.9.1 released HOT 1
- Perform unit test on JFastText
- Model file's format is not compatible with this JFastText version!
- Unable to build using mvn
- do not support get sentence vector HOT 1
- Error when building on Mac OS 10.15
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from jfasttext.