fraserphysics

Also cool would be the inverse. Going from ECG to plausible simulated RD dynamics.

I am reworking the analysis of ECGs from an old contest, and I want help from an expert.

In 2000 the Computers in Cardiology challenge (CINC2000) provided ECGs from sleep studies of 70 patients and asked contestants to identify obstructive sleep apnea based on those ECGs. I was on the team that won.

Now I am reworking the problem for the second edition of a book (see https://www.fraserphysics.com/book.pdf), and I see great variety in those ECGs (see https://www.fraserphysics.com/all_ecgs.pdf). I suspect that some of that variety is due to lead placement, and some is due to pathology, but I'm not sure.

Is anyone here willing to help me out?

Consider https://en.wikipedia.org/wiki/Fraser_Mansion. My great great grandfather lived there till he jumped to his death from Brown's Hotel in London. See Richard Cory.

"Arithmetic coding for data compression" by Witten Neal and Cleary. 1987. https://dl.acm.org/doi/10.1145/214762.214771 It explains that all that's left to work on for better lossless compression factors is better (higher likelihood) models of sources. It provides C code and a good explanation of arithmetic coding.

If you need to detect anomalies as soon as they occur, that seems right. But if you want to detect them later you can also combine back-casting with forecasting. Like Kalman smoothing.

I agree with the article, and I find many of the comments here insightful. Relationships with some of my old school adversaries were healed when they attended my son's funeral.

The movie Charade is sort of about the bad effects of a poorly attended funeral. See https://www.youtube.com/watch?v=a8FA5zBHiFA

Where does Ralf Juengling's work on lush fit in to this picture?

I too have served on faculty search committees and reviewed scores of papers. Many members of the committees only counted publications. I read some papers and commented on them without much effect.

Society with privacy is different from and preferable to society without privacy. For one example, a lack of privacy enables the identity based political fragmentation that afflicts us. For another example, in developing relationships of any kind, people choose aspects of themselves to reveal to other parties. When negotiating a price, information about the counter party is an advantage.

I spent 4 years at Fairchild in the bipolar memory division in Mountain View, 15 years as a professor at Portland State, and 15 years working at LANL.

On the plus side: At Fairchild I worked with a technology that made the fastest circuits at the time. I designed some great circuits and new technologies. At Portland State I had some great students, and at LANL I had great colleagues.

On the minus side: At Fairchild status = number of subordinates. I had tenure at PSU, but the institution didn't have a use for me. At LANL success = spending money. I ended up supporting code for the nuclear weapons program. The software infrastructure and software practices were out of date. We were not allowed to update things because that would threaten security. The quality of much of the code was appalling, as was the quality of the science and mathematics behind it.

I read American Prometheus, and I think the movie is going to be hard on Strauss and Teller. I suppose that the DOE action this month will get mentioned in the closing credits. I don't know, that might seem too little too late to get the AEC/DOE off the hook. It's unfortunate that movie makers are such powerful interpreters of history. (EG, Birth of a Nation, Gone with the Wind) This movie will simplify the history and perhaps not be fair to Strauss and Teller. But if I were going to tell a simple story, I think the upcoming movie would be the story I would tell.

I agree. I published code that I used for my dissertation (more than 30 years ago). I think it led to thousands of citations.

I retired rather than go along with extremely bad scientific/technical decisions by managment. Also, continuing to work was not improving my finances very much.

I don't know. I want to run an X-11 server at home and use applications across town.

Thanks, but I don't see your email in your profile.

Asking for help from NNSA is exactly the kind of thing I hope the broadband manager will do. We need to find and hire the broadband manager first.

My reflex is to approach a problem/issue from a technical perspective. However, you are correct, we need political and managerial perspectives. I am not in charge, I am only a citizen advocate, but I will advocate for something like what you suggest.

I think there is something called REDInet that runs up 84 to Taos. And I've heard that Los Alamos County has some kind of in with that new path. Also, I think Comcast and others piggy back on the existing link that DOE uses. Finally, I want the County to hire someone to stay on top of such issues.

I don't have any personal knowledge about it. I just did a Google search on starlink latency, and as Trump would say "people are saying ..." Seriously, I just checked the search results again and find that https://www.speedtest.net/insights/blog/starlink-hughesnet-v... says starlink's latency varies with location. EG. 45 ms in the US and 101 ms in New Zealand. Better than I would have guessed, but still not great.

You are correct about ESnet. Before I quit LANL last year, I ran traceroute from my LANL desktop to my house. I found that the packets went through Sunnyvale. If LANL is serious about WFH, they will address that.

One of the big drivers in Los Alamos is working from home. I think that StarLink's latency would be a problem there.

I just looked at your blog. You quit shortly after I started.

My home Internet connection is through Los Alamos Network.

I believe that the Carson Electric Co-Op in Taos uses REDInet to provide an Internet option to their customers.

I heard for years that the San Ildefonso prevented us from connecting to REDInet. Then Alan told me that he and Comcast and everyone else buys capacity on the link that Lumen operates for LANL.

We need a someone employed by Los Alamos County who knows what's going on.

The best win is that the County owns the last mile fiber and customers buy service that they choose. Part of the reason I prefer that has to do with issues like net-neutrality.

You are correct about the other utilities. The Feds actually built some of the infrastrucure and simply gave it to the County when they gave up running it.

You are sort of correct about the lab's backbone connection. However that connection is owned and operated by the phone company, now called Lumen. Lumen sells capacity on that link to Comcast.

The lab is not going to be interested in buying service from the County, but as a consequence of the pandemic they have said that they are interested in supporting employees working from home. Working from home with the available Internet connections is difficult.

I mostly agree with you. For the first time in a decade, we have a County Council in Los Alamos that understands that broadband is an essential utility. We are a small rich county with a population less than 20K. I don't believe financial motivations have affected any Councilor's judgement in the 16 years I've lived here.

If you know people who might be interested in the Broadband Manager position, please tell them about it.

Thanks for the link. I sent them a note.

We may be too small, but I think we have a good utility department that provides electricity, gas, water and waste water service. We certainly need a manager as a first step. I agree that "Cisco advanced certification" may not describe what we need.

Thanks for the link. I'm part way through part-ii. It's a good read.

Broadband is a natural monopoly. Most natural monopolies are either owned by the government or regulated. At the national level government in the US has failed with respect to broadband. I hope we can address that failure locally by building a government owned broadband utility.

Los Alamos County owns the electric, gas, water, and wastewater utilities. So they own the poles and have rights of way. I think we are in a better position in that regard than most communities. However, you may be correct that the pay scale is not adequate.

Chapter 6 of "Elements of Information Theory" by Cover and Thomas is "Gambling and data compression". It explains that maximizing expected utility almost always leads to ruin. I didn't believe it when I first read it. Of course it is exactly correct. I reccomend it.