/template-scala-probabilistic-classifier-VW-sgd

A PredictionIO engine template using online logistic regression [Backed by Vowpal Wabbit; SGD w/ early stopping, adaptive learning rates & normalized and invariant updates] with raw (probabilistic) outputs

Primary LanguageScala

Probabilistic Classifier Template [Vowpal Wabbit - LR/SGD]

This template requires Vowpal Wabbit. The included dependency in the build.sbt has been tested on Ubuntu 14.04 only. If you encounter issues, please build VW from source, per instructions below.

For a tutorial featuring this engine template, please look here

Abbreviated Vowpal Setup:

Prerequisite software

These prerequisites are usually pre-installed on many platforms. However, you may need to consult your favorite package manager (yum, apt, MacPorts, brew, ...) to install missing software.

  • Boost library, with the Boost::Program_Options library option enabled.
  • GNU autotools: autoconf, automake, libtool, autoheader, et. al. This is not a strict prereq. On many systems (notably Ubuntu with libboost-dev installed), the provided Makefile works fine.

Getting the code

## For HTTP-based Git interaction
$ git clone https://github.com/EmergentOrder/vowpal_wabbit.git

Compiling

You should be able to build the vowpal wabbit on most systems with:

$ make
$ make test    # (optional)

If that fails, try:

$ ./autogen.sh
$ make
$ make test    # (optional)
$ make install

#Vowpal Java Wrapper Build

$ cd java
$ mvn package
$ cd target

Finally, substitute the jar found in target for the one specified in the build.sbt if needed. [currently published artifact was generated on Ubuntu 14.04]