# lenskit-train-model(1) Manual Page

## NAME

*lenskit-train-model* - train a LensKit model and write it to disk.

## Synopsis

lenskit [GLOBAL OPTIONS] train-model [OPTIONS] CONFIG…​

## Description

The train-model command loads a LensKit algorithm configuration, instantiates its shareable components, and writes the resulting recommender engine to a file. This file can then be loaded into an application or one of the other LensKit commands to provide recommendations and predictions.

## Options

CONFIG

A LensKit algorithm configuration file, written in the LensKit algorithm DSL for Groovy. If multiple configuration files are specified, they are used together, with configuration in later files taking precedence over earlier files.

--help

Show usage help.

-o FILE, --output-file FILE

Write the resulting recommender model to FILE. If this option is not specified, the model will be written to model.bin in the current directory. If FILE ends in .gz, the file will be gzip-compressed. Compressed model files can be transparently read by LensKit, so this is usually a good idea.

This command also takes the standard input data options and script environment options.

## Project Information

This command is a part of LensKit, an open source recommender systems toolkit originally developed by GroupLens Research.
Copyright 2010-2016 LensKit contributors (see CONTRIBUTORS.md)
Copyright 2010-2014 Regents of the University of Minnesota

Work on LensKit has been funded by the National Science Foundation under grants IIS 05-34939, 08-08692, 08-12148, and 10-17697.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.