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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SAMOA-68) Saving true and predicted labels to file
Date Fri, 23 Jun 2017 14:29:01 GMT

    [ https://issues.apache.org/jira/browse/SAMOA-68?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16060985#comment-16060985
] 

ASF GitHub Bot commented on SAMOA-68:
-------------------------------------

Github user abifet commented on a diff in the pull request:

    https://github.com/apache/incubator-samoa/pull/61#discussion_r123759023
  
    --- Diff: samoa-api/src/main/java/org/apache/samoa/moa/core/Vote.java ---
    @@ -0,0 +1,90 @@
    +package org.apache.samoa.moa.core;
    +
    +/*
    + * #%L
    + * SAMOA
    + * %%
    + * Copyright (C) 2014 - 2015 Apache Software Foundation
    + * %%
    + * Licensed under the Apache License, Version 2.0 (the "License");
    + * you may not use this file except in compliance with the License.
    + * You may obtain a copy of the License at
    + * 
    + *      http://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.
    + * #L%
    + */
    +
    +import java.util.ArrayList;
    +import java.util.List;
    +
    +import org.apache.samoa.moa.AbstractMOAObject;
    +
    +/**
    + * Class for storing votes.
    + * 
    + * @author Maciej Grzenda (maciej.grzenda@gmail.com)
    + * @author Jerzy Jegier (jerzyjeg@wp.pl)
    + *
    + */
    +public class Vote extends AbstractMOAObject {
    --- End diff --
    
    "implements Serializable" instead of "extends AbstractMOAObject" should be enough.


> Saving true and predicted labels to file
> ----------------------------------------
>
>                 Key: SAMOA-68
>                 URL: https://issues.apache.org/jira/browse/SAMOA-68
>             Project: SAMOA
>          Issue Type: New Feature
>          Components: SAMOA-API
>            Reporter: Maciej Grzenda
>              Labels: features
>
> Currently PrequentialEvaluation task supports dumpFile option.  With this option model
performance can be saved to a file. However, in some cases it would be good to save also individual
predictions made by a model.  This is useful for model debugging and method development.
> This could be also used to visualize model output, calculate custom performance indicators
(e.g. model accuracy for instances of a certain class or sharing the same feature value).
 Such saving of model output (if done) should be made for every instance. Hence, a new option
making it possible to dump predictions to a separate file seems justified.  For classification,
it should include votes made for individual classes, if available.



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