lenskit-input-data - specify input data for LensKit commands.


LensKit commands use a set of common options for reading input data.


Several subcommands of [lenskit(1)](man:lenskit(1)) allow for input data to be specified. They all take the same options to control their input data, documented here.

Primary Input File

LensKit commands can read data in several different ways. To give the recommendation or model-building process some data to work with, one of the following mutually-exclusive options must be present:

--ratings-file FILE

Read ratings from the delimited text file FILE.

--csv-file FILE

Read ratings from the CSV file FILE. This is identical to passing --ratings-file=FILE with --delimiter=,.

--tsv-file FILE

Read ratings from the tab-separated file FILE. This is identical to passing --ratings-file=FILE with --delimiter=^I, but doesn’t require you to know how to encode tab characters in your shell.

Input Options

The options in this section provide additional control over the input.

Delimited Ratings and Event Files

These options control how events (--events-file) or ratings (--ratings-file) are parsed.

-d DELIM, --delimiter DELIM

Use DELIM as the delimiter for delimited text files. Only effective in conjunction with --ratings-file or --events-file; does not affect the parsing of --item-names.

-H N, --header-lines N

Skip N header lines at the top of the event or ratings file.

-t TYPE, --event-type TYPE

When used with --events-file, specifies the type of events that are being read from the file.

See Also

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.

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