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Calls.
I thought that was what we were talking about.


Quoting Joshua O'Madadhain <[log in to unmask]>:

> Are they analyzing the phone _system_ (i.e., the physical static
> switching network) or a network induced from telephone calls?  The
> former is presumably several orders of magnitude smaller as a data
> set.
>
> Joshua O'Madadhain
>
> On 24 May 2006, at 14:43, Stanley Wasserman wrote:
>
>> I know people who are analyzing not the US phone system, but
>>    the phone system in Spain.
>>
>> It's already happening.... not with standard software, but with
>>    software written in house.
>>
>> SW
>>
>>
>> Quoting Joshua O'Madadhain <[log in to unmask]>:
>>
>>> *****  To join INSNA, visit http://www.insna.org  *****
>>>
>>> On 24 May 2006, at 13:42, Barry Wellman wrote:
>>>
>>>> *****  To join INSNA, visit http://www.insna.org  *****
>>>>
>>>> Story in GCN today estimates that AT&Ts database supplied to NSA was
>>>> 312 terrabytes plus, when managed by ATT's Daytona software that
>>>> managements its call detail record dbase.
>>>>
>>>> Story recounts different opinions as to whether this is
>>>> analyzable  in any
>>>> useful size. Supposedly SGI has computers with 13 terabytes worth of
>>>> activity memory.
>>>>
>>>> Interested? Read the story at:
>>>> http://www.gcn.com/print/25_13/40827-1.html
>>>>
>>>> I am waiting for the first paper that does clustering and   centrality on
>>>> the American telephone system.
>>>
>>> I don't know if you were serious or not, but I don't expect to see
>>> this soon, for a few reasons:
>>>
>>> (1) even the permanent storage (almost an exabyte, including data
>>> from all 3 carriers) for
>>> this data would be hard to manage, never mind getting it into memory
>>> for analysis.
>>>
>>> (2) more importantly, this data hasn't--as far as I know--been
>>> released to anyone that would be likely to publish analyses in an
>>> open (i.e., unclassified) journal.  Nor do I expect that it will soon
>>>  be released for such a purpose.
>>>
>>> As a final point, since the network changes over time (people move
>>> and acquire new phone numbers, old phone numbers are recycled, people
>>>  acquire new "phone relationships" and discard old ones, etc.), the
>>> definition of "the network" for purposes of clustering/centrality
>>> analyses would be open to interpretation.  (Looking at extremely
>>> small time slices of the network would be one way of dealing with the
>>>  storage and memory problem, though.)
>>>
>>> Joshua O'Madadhain
>>>
>>> jmadden@ics.uci.edu...Obscurium Per Obscurius...www.ics.uci.edu/ ~jmadden
>>> Joshua O'Madadhain: Information Scientist, Musician, and
>>> Philosopher- At-Tall
>>>   It's that moment of dawning comprehension that I live for--Bill
>>> Watterson
>>>   My opinions are too rational and insightful to be those of any
>>> organization.
>>>
>>> _____________________________________________________________________
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>>
>>
>
> jmadden@ics.uci.edu...Obscurium Per Obscurius...www.ics.uci.edu/~jmadden
> Joshua O'Madadhain: Information Scientist, Musician, and Philosopher- At-Tall
>   It's that moment of dawning comprehension that I live for--Bill  Watterson
>   My opinions are too rational and insightful to be those of any
> organization.
>
>

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