stance_detection | Stance Detection for the Fake News Challenge | Machine Learning library
kandi X-RAY | stance_detection Summary
kandi X-RAY | stance_detection Summary
Stance Detection for the Fake News Challenge with Conditional Encoding and Attention LSTM, as Stanford CS224N class project by Stephen Pfohl, Oskar Triebe and Ferdinand Legros.
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QUESTION
I am a newbie in Spark . I want to use multiclass classification for SVM in PySpark MLlib. I installed Spark 2.3.0 on Windows.
But I searched and found that SVM is implemented for binary classification only in Spark , so we have to use one-vs-all strategy. It gave me an error when I tried to use one-vs-all with SVM . I searched for the error but do not find a solution for it.
I used the code of one-vs-all from this link https://spark.apache.org/docs/2.1.0/ml-classification-regression.html#one-vs-rest-classifier-aka-one-vs-all
here is my code :
...ANSWER
Answered 2018-Apr-29 at 23:45You get the error because you are trying to use a model from Spark ML (OneVsRest
) with a base binary classifier from Spark MLlib (SVMWithSGD
).
Spark MLlib (the old, RDD-based API) and Spark ML (the new, dataframe-based API) are not only different libraries, but they are also incompatible: you cannot mix models between them (looking closer at the examples, you'll see that they import the base classifier from pyspark.ml
, and not from pyspark.mllib
, as you are trying to do here).
Unfortunately, as at the time of writing (Spark 2.3) Spark ML does not include SVMs, you cannot currently use the algorithm as a base classifier with OneVsRest
...
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Install stance_detection
You can use stance_detection like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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