How Police could effectively pre-empt riots

Posted by lemiffe in A.I., Computers, Life, News, Politics, Society, Technology on Aug 10th, 2011 | 0 comments

Over the past few days we have seen violence escalate dramatically in different cities across England, with London being the primary location. Acts of violence, rioting, looting, and arson have taken place at night for several days.

I have been attached to the BBC News coverage through their website and I saw an interesting tweet posted there:

At first I thought. Pre-empt where the next bout would take place? How on earth would they manage that?

But it actually isn’t that hard. They have a mountain of CCTV data, they have a good amount of servers, all they lack is a bit of artificial intelligence.

The best way I can think of to determine where possible bouts of violence could sprout in what seems like an apparent random non-deterministic method of choice is as follows:

The IT team of the police should annotate the direction of each CCTV camera, including which streets are in view and the coordinates.

Afterwards, the CCTV cameras should be plotted on a 2D map, as vectors (pointing in the direction they are facing, with the length of the vector being the distance the camera covers).

Additionally, all points of interest should be mapped, such as shopping centres, residential areas, commercial areas, shops with high-value items, and shops with low-value items. Most of this data can be readily obtained from Google Maps, amongst other online maps. This data can be extracted and annotated with the values we require (such as the value of the goods sold per area, etc.)

If you think this is a very hard task, it is not. A very simple way of doing this would be to go to the website (or ask by phone) of each major retailer and chain for a list of addresses of their shops. Google Maps can plot them on a map using a spreadsheet as input. There you go, simple as that!

A Machine Learning program could be developed using WEKA (for instance), in which an SVN is programmed to take data from the map-plot, where priority spots include places where high-value items are sold. Additionally, it would take data from each CCTV camera.

Now, how do we represent the data from CCTV cameras? One way would be to take a selection of pixels from each camera, measure the amount of change for a second, and wherever there is a large enough change in different areas of the same camera, we might have a lot of movement going on. So we automatically annotate the data per CCTV camera as having “movement” or “no movement”. Additionally, a range from 0-1 would produce better results (hopefully).

So now we run an SVN machine on the data and hopefully come up with some interesting results.

What could essentially be obtained from this is a vector describing the movement of as mass of people from camera to camera, this vector would be projected on the 2d map. Multiple vectors could be plotted at the same time if there were multiple riots taking place at the same time in the city. A confidence level can be given to each vector (assuming we have built in a few mechanisms to differentiate people from cars, etc). The places of interest could be mapped as hotspots, and furthermore we can predict paths to possible places of interest, derived from the speed and direction of each vector.

So there you go. If you belong to the MET, please share this blog post with your boss (or the IT team) and get working on a system to perform such actions, it would certainly help prevent further stupidity in the future. 6,000 police officers should be able to deal with outbreaks of crime provided they knew where the rioters would be gathering and where they are heading.

IIS flaw under investigation by Microsoft | Tech News on ZDNet

Posted by lemiffe in Computers, Internet, News, Operating Systems, Security, Viruses, Windows on Sep 1st, 2009 | 0 comments

Microsoft on Monday said it is looking into a report of a flaw in some versions of its Internet Information Services product that could allow an attacker to gain control of a system.

In a statement, a Microsoft representative said the company “is investigating new public claims of a possible vulnerability in IIS 5 and IIS 6 File Transfer Protocol (FTP)”.

Microsoft said it is not aware of any attacks using the vulnerability. “We will take steps to determine how customers can protect themselves, should we confirm the vulnerability.”

According to IDG News Service, code for exploiting the unpatched flaw was posted to the Milw0rm Web site. IDG said the exploit appears to affect primarily older versions of IIS — and only when the FTP function is enabled.

Once it is done with its investigation, Microsoft said, it will decide how to address the matter, which could include a security update as part of its monthly Patch Tuesday or an out-of-cycle update.

via IIS flaw under investigation by Microsoft | Tech News on ZDNet.

Oh this weather…

Posted by lemiffe in News on Jul 25th, 2008 | 0 comments

Heavy storms shattering glass windows, half the city flooded, cars passing by on the nearby river, electricity shortages, several million with no electrical power, quite a few killed, a few drowned, and several electrocuted. Thats what the panorama might have been like if there *only* had been a huracane.

Most businesses closed halfway through Wednesday and the whole of Thursday to prepare for the great storm, which the news blew out of proportion… maybe… the reality is that it just turned away somehow and managed to miss us at Monterrey, NL, México.

Great way to spend a Thursday though, small showers, cool weather, xbox 360, music and more.

Severe Spasms and Spam for Supper

Posted by lemiffe in News on Jul 16th, 2008 | 0 comments

Electrifying acid storms and deathcab cuties stark naked… Welcome.

I’m going to try and write regularly about stuff that comes to my head, lyrics, maybe a few poems once in a while, political thoughts, food for the brain, and whatever else comes to me. Not because I think I’m an interesting person or anything, but because I think we all should have some place to express a few of our thoughts, it sometimes makes life more interesting

Arbitrary text of the day: “This will locate the customer based on the number you entered in the first text box”.