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Greeting.

Dimitirs and I are using the E-I index function of Ucinet to analyze a two
mode data about profs of computer science and electrical eng at UC Berkeley
and Stanford. We try to model relationship of co-foundation, advisory, and
board director of the companies in and around silicon valley.

For the concept E-I index, we referred Krackhardt, D and Stern, R N (1988)
Informal Networks and Organizational Crises, Social Psychology Quarterly,
51, 2, 123-140. (http://www.andrew.cmu.edu/user/krack/academic/papers.html)
and Valdis Krebs’ work of Post-Merger Integration
(http://www.orgnet.com/merger.html).

We met a technical problem in calculating the index with Ucinet. We made up
a small symmetrical binary dataset and a corresponding attribute dataset to
test the E-I Index function (network – network properties – E-I index).
However, after running the function, there is only a Log file, saying
‘Warning: This procedure ignores direction of ties’, and without the
expected output file IndE-I. We changed the inputs into different forms,
but got the same result.

Anybody who met this problem before?

The followings are the test datasets and Log file.

Input dataset:
        A B C D E F
A 1 1 1
B 1 1 1 1 1
C 1 1 1
D 1 1 1 1
E 1 1
F 1 1 1 1 1

Attribute dataset:
A 1
B 1
C 1
D 2
E 2
F 2

OUTPUT.LOG1

E-I INDEX
--------------------------------------------------------------------------------
Adjacency dataset: D:\Mes documents\UCinet test\test 1
Attribute: test 1 group col 1
# of Permutations: 5000
Random seed: 2923
Individual E-I scores: IndE-I

Warning: This procedure ignores direction of ties.

----------------------------------------
Running time: 00:00:01
Output generated: 31 janv. 05 20:25:36
Copyright (c) 1999-2004 Analytic Technologies


Jeff

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