Download

Download password can be obtained from Mason Porter or Peter Mucha

The 'readme' text below is modified from the file readme.txt in the download:

Data: Baseball Networks

This .zip file contains data for bipartite matchup networks between
Major League Baseball batters and pitchers from 1954--2008. We
include two types of networks in the form of adjacency matrices:

(1) weighted matchups W in which the element W_{ij} is given by the

number of times that pitcher i faced batter j

(2) weighted outcomes M in which the element M_{ij} is given by a

performance index ("score") based on Runs to End of Inning (RUE).

M* and W* variables in the MATLAB .mat file are named according to the
year of the data (1954 to 2008) or, for the multi-year network, with a
"multi" tag.

baseball* and pitcher* variables indicate the unique 8-character ID
codes for each player, from the Retrosheet data.

We include complete batter event matchup data (without any of the
thresholding described for the rankings in Ref. 1, which can be
westinghouse:~/Desktop/baseballnetworks $ m readme.txt
Data: Baseball Networks

This .zip file contains data for bipartite matchup networks between
Major League Baseball batters and pitchers from 1954--2008. We
include two types of networks in the form of adjacency matrices:

(1) weighted matchups W in which the element W_{ij} is given by the

number of times that pitcher i faced batter j

(2) weighted outcomes M in which the element M_{ij} is given by a

performance index ("score") based on Runs to End of Inning (RUE).

M* and W* variables in the MATLAB .mat file are named according to the
year of the data (1954 to 2008) or, for the multi-year network, with a
"multi" tag.

baseball* and pitcher* variables indicate the unique 8-character ID
codes for each player, from the Retrosheet data.

We include complete batter event matchup data (without any of the
thresholding described for the rankings in Ref. 1, which can be
recovered directly from the present data).

Ref.1:

Saavedra, S., Powers, S., McCotter, T., Porter, M. A. & Mucha, P. J.,
Mutually-antagonistic interactions in baseball networks,
to appear in Physica A (DOI:10.1016/j.physa.2009.10.038).

A .bib entry for Ref. 1:

@Article{baseball,

author = {Saavedra, Serguei and Powers, Scott and McCotter, Trent and Por

ter, Mason A. and Mucha, Peter J.},

title = {Mutually-antagonistic interactions in baseball networks},
journal = {Physica A},
year = 2009,
note = {in press (doi:10.1016/j.physa.2009.10.038)}

}

Terms of use

The raw data was obtained free of charge from and is copyrighted by
Retrosheet [retrosheet.org, 20 Sunset Rd., Newark, DE 19711, USA].

The baseball networks derived from the Retrosheet data are distributed
free of charge for research purposes only. Use of this network data
should cite both Retrosheet and Ref. 1.

For more information, please contact
Serguei Saavedra (s-saavedra@kellogg.northwestern.edu),
Mason Porter (porterm@maths.ox.ac.uk), or
Peter Mucha (mucha@unc.edu).