Steven Woodcock has emailed in a public annoucement with some very sad news about one of our most respected peers in the game AI industry.

It is with great sadness that I announce that Eric Dybsand, known as "Geta" on these forums and one of the true pioneers in the field of Game AI, passed away on April 15, 2004. He was at work in the game development studio '2015 Inc.', located in Tulsa, Oklahoma. [...] Eric was a very good friend and simply one of the brightest minds I have ever met. I think he truly had no idea how many people he inspired and influenced with his thoughts, his easy-going personality, and his sheer pleasure at talking about Game AI.

There's a memorial service planned in Collorado, as well as an online memorial. See Steve's full announcement right here.

I only met Eric Dybsand in person at last year's GDC. It was always a pleasure to find him in the speaker's room, where he would innevitably be having a discussion about AI. I subsequently had the pleasure of working with Eric on my book during the technical review; he was always willing to share his wisdom and discuss my ideas. I shall remember Eric as a very friendly person, always willing to help, and with an incredible talent for his job. He will be missed.

U.J JAYASEKERA,
RESEARCH ASSOCIATE,
DEPT. OF MEDICAL PHYSICS,
LIECESTER GENERAL HOSPITAL, UK
ugjanu@yahoo.co.in

Dear AI Depot Management,
Thank you very much for your reply. I have received my account at the Artificial Intelligence Depot and password.
Question:
I have to write a simple algorithm to detect the beginning and end of each cardiac cycle, using the ECG as fiducial point (identification of the RR interval).so I have to write MATLAB programme to find this RR interval.
Raw data: no of Columns: 2, no. of rows: 16384,
Plotted the graph time(s) vs ECG signal data and calculated SD and CV, MEAN, MAXIMUM, values.
STEPS: I have to write a following programm in MATLAB.
1. Test(comparison) of each sample:select thereshold level=2.0
Answer is : no-above thereshold level go to 1(step)
Yes- search for maximum in the next NM=50 samples
maximum is the position of finite R wave: SAVE
2. Sequence of all peak positions-beginning and end of each cardiac cycle Test comparison sample
Answer is : no-is it below thresholds level –go to 2(step)
Yes- go to 1(step) (test comparison each sample)
I have already lost 6 weeks try to find out the above problem. I searched through MATLAB: correlation function, comparison test , digital filters(lowpass band). This is really frustrating. I’m not a programmer; I’m not able to do it. I want to know how can I write in MATLAB PROBLEM. Please can you help me ?
Regards
Jayasekera