[Bmi] Discussion on group intelligence

[Vojo]

Yep, quite correct statement,

but /the basic assumption while talking about group/'s both action and 
performance is that the group /has the same/ cost (fitness, objective, 
loss, merit, etc) function. In other words, that it works under same 
norm. (In science, the norm used is typically to get better results, 
meaning the result closer to the 'truth', or closer to the true state of 
the nature as perceived by the group. Important is that each individual 
works under same norm, which is often the case in 'science').

If, on the other side, subgroups of the group (and there may be 2,3, 
..., up to |group| )   have different objective functions, group will 
rarely be better than many individuals. Example given below is a great one!

On 23-Dec-11 5:02 PM, Irving Engelson wrote:
> Carlos -- I know of cases where groups get worse ideas than many of 
> its individual e.g., the US Congress. :-(
> Irv
>
> On 12/16/2011 10:32 AM, Carlos Gershenson wrote:
>>> Do you know many cases where groups get better ideas than its individuals?  For which kinds of problems does that happen?
>> Seehttp://en.wikipedia.org/wiki/Collective_intelligence
>>
>> In this paper they offer some overview of collective intelligence (attached below):
>> Evidence for a Collective Intelligence Factor in the Performance of Human Groups
>> Anita Williams Woolley, Christopher F. Chabris, Alex Pentland, Nada Hashmi, and Thomas W. Malone
>> Science 29 October 2010: 330 (6004), 686-688.
>> http://dx.doi.org/10.1126/science.1193147
>> Their results show that groups of people work better not depending on the intelligence of individuals, but on how efficiently they interact. There is an interesting 6 min related TED talk athttp://www.ted.com/talks/tom_wujec_build_a_tower.html
>>
>> I believe that Prof. Weng generalized the question: any cognitive system can be divided into components, usually the properties of the system are different than those of its components (e.g. neurons+molecules+energy), but we usually do not refer to properties of a brain as "group intelligence", even when it is indeed product of a collection of neurons, etc. It is just a convention.
>>
>> Best wishes,
>> Caros
>>
>> 	Dr. Carlos Gershenson
>> 	Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas
>> 	Universidad Nacional Autónoma de México
>> 	A.P. 20-726, 01000, México, D.F., México
>> 	http://turing.iimas.unam.mx/~cgg/
>>
>> 	Editor-in-Chief, Complexity Digest
>> 	http://comdig.unam.mx
>>
>>
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