« first day (1271 days earlier)   

vzn
1:30 AM
@EvilJS oops sorry mea culpa! too many cool links & got em mixed up! take2!
 
1:45 AM
@vzn well, previous link was cool, just not what I expected ;]. This I read long time ago. Conclusion that was more convincing showed that it is due to stereotypes about math skills (boys vs girls). But there are no differences, like with color perception.
 
2:02 AM
"Number Theory is the Cocaine of Mathematics" so I ask, how we can determine overdose?
 
vzn
2:31 AM
the link re girl bias in classrooms is very recent/ new research just released.
ofc there is a lot of research on the subj now, continuing/ ongoing.
 
@vzn yup, you have it online. I did today 1n+1, 2n+1, gap, and then switched to 9n+1, as it seems to be first interesting to give some insight, also still thinking that base 5 or 11 would give me answer to my own conjecture (it is a bit weird to make conjecture about two conjectures to take a look at "the conjecture".
Is it always deserted here?
RNG + fractals, it seems like looking for singularity and exhaustive search should take seriously big integers to grab piece of infinity
 
 
14 hours later…
vzn
5:07 PM
@EvilJS its "bursty". it has pros and cons. the pro is that you dont really have to worry about what you write in chat rooms. the con is that it hasnt really "gelled" like some other SE chat rooms. but on other hand not many SE chat rooms have "gelled", seems like only half a dozen or so at times.
there are many, many different ways/ angles to study collatz. new ones are invented all the time. thats part of the fun, and part of the (serious) problem.
so you are experimenting? what language? urge you to write up some observations.
 
5:40 PM
@vzn started nowadays to tackle again the problem. Not suprisingly I use JS. The fastest way, and the most of the time I have access only to mobile phone when I write (computer is saturated, lab computer also), so I write like in natural language anywhere I want.
These gives the fastest deployment cycle, also I do not nag about speed, it is blazingly good. Yesterday I started binary prime recognition, it is giving approx patterns, so I thought about making Collatz only on consecutive primes (starting points), and about base 5 and base 11, only thinked about it, not implemented.
I thought about one thing: if it is possible to show inverse Collatz, it automatically proves no cycles or divergent case? I would really love to involve math to the problem, but there are several topics I am good at, with practice, but formal proofs or advanced math theories - either I do not know them or I would mess something up. For example once I did get stuck on physics and mathematics, so I bought two books: physics for game programmers and mathematics for chemists.
 
vzn
@EvilJS fyi this is cool, jason davies visualization using D3 js library
all approaches to the problem involve math :)
 
It helped a lot, but reading C++ code to backtrack to understanding physics is not very common case
 
vzn
we are all learning!
wondering, wasnt clear, are you doing EEGs on humans or mice?
great to hear you are trying out ideas found on this site. :)
fyi this site has some stuff maybe related to your work
 
I mean it is easy ti understand FFT, differential equations, polynomials root finding and so on. There are group theories. I know simplex construction and self simmilar constructs, but I haven't the foggiest how to use modular group and why
I found answers here on chat. You all guys gave enlightment
 
vzn
:)
 
5:53 PM
I am doing EEG on humans. Read their state, emotions and so on. But EEG is on the surface of head, better idea is to get electrodes strictly on brain surface. This is possible on mice or rather rarely when human already have need to do some transhead insertion. These cases are patologic, so I do not bother to find them.
I have been there, but there are cultural differences, language barrier. And my experiments are strongly advanced on methodology and own code. So it would be hard to find someone that does not belive in commercial software, writes on his own and will take patience in language bartier
There is for example one item test on self-esteem. It is working in U.S. and does not work in other countries. And also if someone is proficient in English and made diploma abroad it is not considered valid in U.S. One have to take university courses
And it seems that I am not that proficient in English, so it would be disaster
EEG and Eye Tracking is rather independent on cultural differences, but again. Where are you from? Oh... geee... Ok... :-/
I will have chance to speak to them when I get more titles or my patent will be resolved successfully. My equipment is very good (but only as good I can afford, so I work as a programmer to cover research expenses). For many people these would be toys... So I have to improve algorithms and methodology, to squeeze as much as I can, because better equipment is not an option.
But positive outcome is that squeezing is scalable, so one day after getting a shot on high-tech it would do instant benefits.
 
6:22 PM
Also I tried some international projects or fundings - it is very cool, everybody can attend. But if you not live in U.S. I call it preselection, nice idea but just does not work that way.
 
6:37 PM
I had contacted with Paul Ekman (guru in emotion reading, like Donald Knuth in psychology) when he gave testing of software that he is currently involved in. But very politely gave us response that he gives it to only top companies in the field. Another attempts were to EEG companies to purchase equipement. They just did not cared about customers from abroad.
Even though we wanted really big package - 100 devices + some materials backups (like electrodes), and politely informed that it will be used on international music competition that takes place here. Not talking about discounts or something, straight deal plus free commercial if they would like it. Did not bother to respond to purchase, emails and so on. Sorry for lengthy response, but this is how reallity looks like.
 
vzn
6:51 PM
science can be hard!
have noticed the interaction/ dichotomy/ tension between capitalism/ govt & science from a young age.
are you studying something in particular with EEG?
"emotions"? wrt therapy or something?
 
Emotions reading, and other mental states. No, it does not apply to therapy. I am trained in cognitive-behavioral therapy, and I am not connecting it with EEG.
During any event that we present technology - wy strictly don't give a .* about slides or convincing people, we just give opportunity to try it - and since it works, we do not need any training in advance, any particular subjects and so on.
Total freestyle, give stimulus you want, give questions you like to answer (if it is possible), we make proper stimulus presentation put EEG on someones head and after experiment we give results. We did commercials tests, hidden affect tracing and other commercial application, even UX testing, which shows false results when using Eye Tracker only.
And there were times that we got results that were strictly too much. We were asked to destroy evidence, as some people wanted to bet it is not working. They were so sure, that asked if it can be lying detector. Ok, no problem. But results not only showed what was going on, after showing results people were embarrased and admitted results to be true.
Since this is psychological evaluation of some kind, and we are bound on confidentiallity and other clauses, we cannot admmit that somebody was tested if he/she says no. We are obliged to destroy evidence if somebody says so. So we did. We do not need any reason, if somebody says it is finish, destroy data - it never happened.
So now we are not so eager to show any sexually connected stimulus and other controversial themes - we end up with data loss very often.
I cannot indicate that I know somebody if he was on therapy, I can even say to court that this is confidential and deny attendence. And even if somebody commited crime and says so, I do not have to tell anybody if he/she does not have plans to proceed further in crime.
Of course it is on me if something happened and I knew in advance. But why I write it? EEG tests are confidential in the same way, I do not have to treat them that way, but since I can and it is privacy issue, I always take what is the best for people.
 
7:23 PM
6
Q: Automated optimization of 0-1 matrix vector multiplication

Nick AlgerQuestion: Is there established procedure or theory for generating code that efficiently applies a matrix-vector multiplication, when the matrix is dense and filled with only zeros and ones? Ideally, the optimized code would ideally make systematic use of previously computed information to reduce...

 
Also doing private research (of course with consent) doing therapy is out of option. It may interfere, so I never even considered it.
Even slightiest unprobable and unproven anyhow chance that something might have minimal negative outcome - never betting on that.
Once I had test on workers in company, everything was great, andI asked personel not to enter and did everything that was needed to provide privacy. And out of the blue boss of this company came, and loudly asked what they think about him. It was to late to stop him so I asked him to leave, checked results and it was clear that many of them liked him, but not everyone.
So I had to ask each of them how they feel about results
And I got response (from those with negative affect) that they do not want to share results
So I just cannot show good results, it indicate everything, so I classified all results, and told boss that the test is broken, malfunctioning, bla bla bla. And lost results and of course fee, and never got shot to repeat tests
Hardcore events ;)
I was not bound by any law or confidental obligation, but taking money for good test and working results - nice, but some people might get hurt in the process, so that is how I treat my commercial tests
 
 
1 hour later…
8:51 PM
@vzn 10 points more and I will get funny description ;)
 
9:21 PM
@EvilJS depends, it's lively at times here
Many people here are involved with the university life, so events there affect activity here
 
10:15 PM
I didn't connected it at first. Here semester starts on October ;)
@Juho also we probably have time shift, but still, does not matter.
 
10:54 PM
@EvilJS sure, timezones matter too. I'm on a vacation (still), so I'm not currently participating too heavily
Hard to stay away completely? :-)
 
@Juho true, true ;) But taking it further I never go on a vacation without computer ;)
 
Is it a vacation then? :p
I only have my phone with me now
I do still check emails and do stuff that requires only a few minutes or so
 
11:30 PM
If I want vacation I change wallpaper, still working solution ;). I do many tasks on phone, and since I installed several compilers, it's hard to get away ;). Imagine that: you go diving, than sunbathing, it's getting boring, so you write program, personal project, so it is still valid vacation then ;)
 

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