Vowpal Wabbit：找不到命令

Question

I want to run Vowpal Wabbit on the generated file. The file itself:

all_documents = newsgroups['data']
all_targets = [1 if newsgroups['target_names'][target] == 'rec.autos' 
                 else -1 for target in newsgroups['target']]

train_documents, test_documents, train_labels, test_labels = \
                                 train_test_split(all_documents, all_targets, random_state=7)

with open('20news_train.vw', 'w') as vw_train_data:
    for text, target in zip(train_documents, train_labels):
        vw_train_data.write(to_vw_format(text, target))

with open('20news_test.vw', 'w') as vw_test_data:
    for text in test_documents:
        vw_test_data.write(to_vw_format(text))

Since I solve the classification problem, I set the loss function to the hinge value (linear SVM). I save the constructed model to the corresponding file 20news_model.vw:

!vw -d 20news_train.vw --loss_function hinge -f 20news_model.vw

But this is where the error comes out.

/bin/sh: vw: command not found

I've installed VW via " conda install -c conda-forge vowpalwabbit ".

Answer 1

You're installing the Python bindings for VW and then trying to use the command line interface.

Either you'll need to install the command line binary. You can find instructions for building from sourcehere . Or you can use brew on MacOS.

Or, you can use the Python bindings to drive the learner. You can find a tutorial for that here