Databases
StackOverflow2013
Postsdbo
POVowpal Wabbit -- Active Learning, predictions always 0 even with seed data
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POVowpal Wabbit -- Active Learning, predictions always 0 even with seed data
    primarykey
    data
    text
    <p>Using Vowpal Wabbit and its <code>python</code> interactor for active learning I've got up to the point of being able to send messages back and forth to the server from the client but I am having problems with seeding.</p> <p>When I seed the model with the current command:</p> <pre><code>python active_interactor.py --verbose -o labelled.txt --seed data.seed localhost 12345 unlabelled.txt </code></pre> <p>The interactor sends the examples to the server (and I know this because the server updates the models and the debug information is produced) but when it feeds the unlabelled examples and asks for a label as a response, the predictions are always <code>0</code>.</p> <p>My question is: is the model not being seeded? If not, why are the predictions always <code>0</code> even though there is a model?</p> <p>It should be noted that the same data can be successfully used to create a passive model that gives non-<code>0</code> predictions, so I do not think the problem is with the training data. </p> <p>---UPDATE---</p> <p>Upon looking at the tests, we went ahead and changed the vw server to match the test with two parameters in mind that were left as their defaults beforehand, namely initial_t and l.</p> <p>vw -f final.model --active_learning --active_mellowness 0.000001 --daemon --port 12345 --initial_t 10 -l 10</p> <p>Once doing this, predictions are produced. This also works when -l is it's default. We will now do a grid search to find out the best possible parameters. One question though, what is the reason why low values of initial_t led to no predictions?</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USishikun
    1. USishikun
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COThis appears focused on the use of particular software and as such off-topic here. If the core question is really or even partly statistical, please reword your question to make that more evident.
      singulars
      1. POVowpal Wabbit -- Active Learning, predictions always 0 even with seed data
      1. USNick Cox
    2. CO@NickCox My apologies! Thanks for the migration :).
      singulars
      1. POVowpal Wabbit -- Active Learning, predictions always 0 even with seed data
      1. USishikun
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload