On Wednesday the Computer Science IB students demonstrated the projects that they have been working on for the last term. This is my thoughts on them.

Some of the projects were really quite interesting, some of them even actually useful in real life, some of them didn’t work, were boring and simply gimmicks.

Alpha: “African SMS Radio” was a project to create a pretty GUI to a “byzantine and buggy” backend. It could allow a radio operator to run polls and examine stats of texts sent to a particular number. However it didn’t look particularly interesting and though there might be use cases for such a system I think only as a component of a larger more enterprise system and only after the “buggy” backend they had to use had been fixed up/rewritten.

Bravo: “Crowd control” was a project to simulate evacuations of buildings. It is a nice use of the Open Room Map project to provide the building data. It looked like it was still a little buggy – in particular it was allowing really quite nasty crushes to occur and the resulting edge effects as people were thrown violently across the room as the system tried to deal with multiple people being in the same place at the same time was a little amusing. With a little more work it could become quite useful as an extension in the Open Room Map ecosystem which could help it gain momentum and take off. I think that the Open Room Map project is really quite cool and useful – it is the way that data on the current structure and contents of buildings can be crowd sourced and kept up to date but then it is a project of my supervisor. ;-)

Charlie: “Digit[Ov]al automated cricket commentary” this was a project to use little location transmitters on necklaces and usb receivers plugged into laptops to determine the location of cricketers while they were playing and then automatically construct commentary on that. It won the prize for best technical project but it didn’t actually work. They hadn’t solved the problem of people being between the transmitter and the receiver reducing transmission strength by 1/3 or the fact that placing a hand over it reduced it by 1/3 or the fact that the transmitters were not omnidirectional and so orientation was a major issue. They were also limited to only four receivers due to only having four suitable laptops. They used a square arrangement to try and detect location. It is possible that a double triangle arrangement with three corners at ground level and then the other triangle higher up (using the ‘stadium’ to gain height) and offset so that the upper vertices lined up with the mid point of the lower edges would have given them a better signal. Calibrating and constructing algorithms to deal with the noise and poor data would probably have been quite difficult and required some significant work – which IB students haven’t really been taught enough for yet.

Delta: “Hand Wave, Hand Wave” was a project to use two sensors with gyroscopes and accelerometers to do gesture recognition and control. It didn’t really work in the demo and since it had reimplemented everything it didn’t manage to do anything particularly interesting. I think using such sensors for gesture control is probably a dead end as kinect and the like makes just using a camera so much easier and more interesting.

Echo: “iZoopraxiscope – Interactive Handheld Projector” this project was about using a phone with a build in pico projector as an interface. This was obviously using very prototype technology – using the projector would drain the phones battery very quickly, in some cases even when the phone was plugged in and fitting it in the (slightly clunky) phone clearly was at the expense of providing the normal processing power that is expected in an Android phone resulting in it being somewhat sluggish. Since the sensors were rather noisy and techniques for coping with that were not as advanced as they might have been (they just used an exponential moving average and manually tweaked the parameter) they had some difficulties with sluggishness in the controls of some of the games. However I think they produced several nice arcade style games (I didn’t play any of them) and so did demonstrate a wide range of uses. With better knowledge of how to deal with sensors (not really covered in any of the courses offered at the CL) and better technology this could be really neat. However getting a battery powered projector to compete with normal lighting is going to be quite a challenge.
The thing I really like about small projectors is that it could help make it easier to interact in lectures. Sometimes when asking a question or making a comment in lectures it might be useful to draw a diagram which the lecturer (and the rest of the audience) can see and currently doing so is really quite hard. (I should take to carrying around a laser pointer for use in these circumstances).

Foxtrot: “Lounge Star” this was a android app for making air passenger’s lives a little easier by telling them information such as which gate to use etc. without them having to go anywhere and integrating with various airlines systems. As someone who has ‘given up flying’ (not in an absolute sense but in a ‘while any other option (including not going) still remains’ sense) this was not vastly interesting but it could really work as a product if the airlines like it. So: “Oh it is another nice little Android app” (but then associated short attention span kicks in and “bored now”).

Golf: The Energy Forecast this was a project I really liked (it pushed the right buttons) it is a project to predict the energy production of all the wind farms in the country based on the predicted wind speed. It integrated various sources of wind speeds, power production profiles for different types of wind farm and the locations and types of many different wind farms (they thought all but I found some they were missing) and they had a very pretty GUI using google maps etc to show things geographically and were using a very pretty graph drawing javascript library. So I did the “oh you should use the SRCF to host that” thing (they were using a public IP on one of their own computers) and I am sort of thinking “I would really like to have your code” (Oh wait I know where that is kept, snarfle, snarfle ;-) It is something I would really like to make into a part of the ReadYourMeter ecosystem (I may try and persuade Andy he wants to get something done with it).
I love wind turbines all my (small) investments are in them, we have one in our back garden etc. this could be really useful. [end fanboyism]

Hotel: “Top Tips” this was a project to see whether the comments traders put on their trading tips actually told you anything about how good the trade was. The answer was no, not really, nothing to see here. Which is a little disappointing and not a particularly interesting project “lets do some data analysis!” etc.

India: “True Mobile Coverage” this was a project to crowd source the collection of real mobile signal strength data. It actually serves a useful purpose and could be really helpful. They needed to work on their display a little as it wasn’t very good at distinguishing between areas they didn’t know much about and areas with weak signal and unfortunately as with all projects it started working in a very last minute manner so they didn’t have that much data to show. Nice crowd sourcing data collection android app of the kind that loads of people in the CL love. Of course there will be large quantities they could do to improve it using the kind of research which has been done in the CL but it is a good start.

Juliet: “Twitter Dashboard” this was so obviously going to win from the beginning – a twitter project (yey bandwagon) which looks pretty. They did do a very good job, it looked pretty, it ate 200% of the SRCF’s CPU continuously during the demo (but was niced to 19 so didn’t affect other services) – there are probably efficiency savings to be made here but that isn’t a priority for a Group Project which is mainly about producing something that looks pretty and as if it works all other considerations are secondary. My thoughts were mainly “Oh another project to make it easier for Redgate to do more of their perpetual advertising. meh.” (they have lovely people working for them but I couldn’t write good enough Java for them)

Kilo: “Walk out of the Underground” this was a project to guide you from the moment you stepped out of the underground to your destination using an arrow on the screen of your phone. It was rather hard to demo inside the Intel Lab where there is both poor signal and insufficient scale to see whether it actually works. It might be useful, it might work, it is yet another app for the app store and could probably drum up a few thousand users as a free app.

Lima: “Who is my Customer?” this was a very enterprise project to do some rather basic Information Retrieval to find the same customer in multiple data sets. The use case being $company has a failsome information system and their data is poor quality and not well linked together. Unfortunately the project gave the impression of being something which one person could hack together in a weekend. I may be being overly harsh but I found it a little boring.

So in summary: I liked “The Energy Forcast” most because it pushed the right buttons, “True mobile coverage” is interesting and useful. Charlie could be interesting if it could be made to work but I think that the ‘cricket’ aspect is a little silly – if you want commentary use a human. iZoopraxiscope (what a silly name) points out some cool tech that will perhaps be useful in the future but really is not ready yet (they might need/be using some of the cool holgrams tech that Tim Wilkinson is working on (he gave a CUCaTS talk “Do We Really Need Pixels?” recently).

Idea for next year: have a competition after the end of the presentations to write up the project in a scientific paper style and then publish the ones that actually reach a sufficiently good standard in a IB Group Project ‘journal’ as this would provide some scientific skills to go with all the Software Engineering skills that the Group project is currently supposed to teach. (No this is so not going to happen in reality)