1. [Home](https://www.g2.com/) 2. ... 3. [Machine Learning Software](https://www.g2.com/categories/machine-learning) 4. [Vowpal Wabbit Discussions](https://www.g2.com/products/vowpal-wabbit/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_57dd97ecbc77b248c077fd49ed91e856/vowpal-wabbit.png "Product Avatar Image") ](/products/vowpal-wabbit/reviews) [ Vowpal Wabbit ](/products/vowpal-wabbit/reviews) (13)4.3/5 Vowpal Wabbit is a machine learning system that pushes the frontier of machine learning with techniques such as online, hashing, allreduce, reductions, learning2search, active, and interactive learning. Show More * * * ### 61.0 Nps Score Already have Vowpal Wabbit? ### All Vowpal Wabbit Discussions Search Most CommentedMost HelpfulCommon QuestionsNewest All DiscussionsDiscussions with CommentsCommon QuestionsDiscussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Common Questions Newest Filter by All Discussions Discussions with Comments Common Questions Discussions without Comments ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • over 3 years ago More Options - [ # What does Vowpal Wabbit do? ](/discussions/what-does-vowpal-wabbit-do) What does Vowpal Wabbit do? [ Machine Learning Software ](https://www.g2.com/tags/machine-learning-software) * * * (true)\<0\>0\>Upvotes (false) * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.&title=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • about 4 years ago More Options - [ # What is reinforcement learning in machine learning? ](/discussions/what-is-reinforcement-learning-in-machine-learning) What is reinforcement learning in machine learning? [ Machine Learning Software ](https://www.g2.com/tags/machine-learning-software) * * * (true)\<0\>0\>Upvotes (false) * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.&title=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • over 4 years ago More Options - [ # What is online training in machine learning? ](/discussions/what-is-online-training-in-machine-learning) What is online training in machine learning? [ Machine Learning Software ](https://www.g2.com/tags/machine-learning-software) * * * (true)\<0\>0\>Upvotes (false) * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.&title=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • over 4 years ago More Options - [ # What is Vowpal wabbit used for? ](/discussions/what-is-vowpal-wabbit-used-for) What is Vowpal wabbit used for? [ Machine Learning Software ](https://www.g2.com/tags/machine-learning-software) * * * (true)\<0\>0\>Upvotes (false) * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.&title=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ![Verified User in Computer & Network Security](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Computer & Network Security") G2 Verified User in Computer & Network Security • about 5 years ago More Options - [ # Vowpal Wabbit is open source or owned by some company? ](/discussions/vowpal-wabbit-is-open-source-or-owned-by-some-company) Is Vowpal Wabbit open source or not. [ Machine Learning Software ](https://www.g2.com/tags/machine-learning-software) * * * (true)\<0\>0\>Upvotes (false) * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.&title=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ![Harsh F.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Harsh F.") HF Loading... [Harsh F.](https://www.g2.com/users/4b7ddba2-b98a-4266-b49d-82cf0b04806c "Harsh F.") • over 5 years ago Data Scientist at Cisco Data Scientist at Cisco More Options - [ # How to speed up the processing time when dataset is in millions? ](/discussions/how-to-speed-up-the-processing-time-when-dataset-is-in-millions) When I introduced 15 different random contexts having 5 different cohorts and 5 different actions having different rewards, it took much more time in computing ctr. [ Machine Learning Software ](https://www.g2.com/tags/machine-learning-software) * * * (true)\<0\>0\>Upvotes (false) * * * 1 Comment [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.&title=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Vowpal+Wabbit+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Vowpal+Wabbit+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%0aAsk+Vowpal+Wabbit+questions+and+get+answers+from+expert+users+in+our+Vowpal+Wabbit+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ## Start a New Software Discussion Have a software question? Get answers from real users and experts [Start A Discussion](/products/vowpal-wabbit/discussions/new) * * * ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_57dd97ecbc77b248c077fd49ed91e856/vowpal-wabbit.png "Product Avatar Image") ### Have you used Vowpal Wabbit before? Answer a few questions to help the Vowpal Wabbit community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/login?context=product_review&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fvowpal-wabbit%2Fdiscuss%3Fsmall_ask%3Dvowpal-wabbit) No ## Top Contributors in Vowpal Wabbit 1 ![Harsh F.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Harsh F.") HF Loading... ### [Harsh F.](https://www.g2.com/users/4b7ddba2-b98a-4266-b49d-82cf0b04806c "Harsh F.") Data Scientist 1 pt 2 ![Estelle N.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Estelle N.") EN Loading... ### [Estelle N.](https://www.g2.com/users/32d40cad-6bca-4f2d-a4fe-dce05c43305a "Estelle N.") Assistante administrative et comptable 1 pt 3 ![HARSHKUMAR F.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "HARSHKUMAR F.") HF Loading... ### [HARSHKUMAR F.](https://www.g2.com/users/f7f56b0c-eaf1-4797-a1d2-e2d1a0f50cd1 "HARSHKUMAR F.") Data Scientist 1 pt