Doubts in analysis using ORA

[rona kurian]

Dear Sir/ Madam,

As part of my doctoral dissertation, I am using ORA for one of my studies. But I have encountered two problems while analyzing. The first question is a methodological concern, and the second one is technical as well.

1. I have collected data using a questionnaire (survey method). The participants (agents) are asked to rate their formal and informal interactions on a scale. There for each agent pair I have two values representing each cell. Should I take the average or median of the two values (final answer would essentially be the same as there are only two observations). This question arises as the scale is ordinal.
2. Second question is on when to use summation or product as a means to combine the objective function while executing an "optimizer" procedure

I shall be highly obliged if you could kindly give clarity on this.

Regards

Rona Elizabeth Kurian

Doctoral Scholar, OBHR Area, IIMK

[Kathleen Carley]

1. I have collected data using a questionnaire (survey method). The participants (agents) are asked to rate their formal and informal interactions on a scale. There for each agent pair I have two values representing each cell. Should I take the average or median of the two values (final answer would essentially be the same as there are only two observations). This question arises as the scale is ordinal.

the most appropriate measure would be the mode

1. Second question is on when to use summation or product as a means to combine the objective function while executing an "optimizer" procedure

summation is used when the items being combine are independent and contribute equally

product is used when the items being combined re-enforce each other and make it more complex

--
Computational Analysis of Social and Organizational Systems (CASOS)
The Institute for Software Research, Department of Computer Science
Carnegie Mellon University, Pittsburgh, PA, USA
http://casos.cs.cmu.edu/
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[rona kurian]

Dear Dr. Carley,

Thank you so much for the response.

One more question on QAP/MRQAP analysis: how do I understand the p-value or statistical significance from the QAP/MRQAP analysis report?

Regards 

Rona Elizabeth Kurian

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[Kathleen Carley]

you need to at the scores

qap is just like a correlation

mrqap just like a linear regression

but they are run a large number of times e.g. 100 on permutations

so it calculates beta or the correlation  on  the data

permits a row/col pair and runs again

it then looks to see if the one on the raw data is in this distribution of scores - - that sets the significance

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