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Has reCaptcha been cracked / hacked / OCR'd / defeated / broken?
I recognized that during some time reCaptcha is used without the horizontal line. I do not like the changes. Referring to some articles, google's captcha service is getting weaker and weaker. Do you guys think reCaptcha is still the best captcha there is, or should i think about using another implementation?
(I'm using play in my current project, and I'm also not very happy with the implementation play supplies.)
Have a read of this article at allspammedup from January 2011 which gives statistics on a crack rate of 17.5% on google reCAPTCHA
Two definites - people are getting better at programming algorithms to get around CAPTCHAs, and CAPTCHAs themselves are getting to the limit of being understood by peoples, so yeas - the effective strength of CAPTCHAs is decreasing, at at some point another solution will have to be used.
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How do you determine which onsets are beats? I am using Spectral Flux for Note Onset Detection and a Running Mean for peak-picking/thresholding.
I am just working with the guitar instrument so the presence of percussions may not help with this. Any ideas?
Thanks!
EDIT: Wow...just realized this question is 3 years old...sorry to resurrect an old post.
My Master's thesis was in beat detection and the main advantage of my method over all other published methods of beat detection was in resolution, both in the time domain and frequency (beat) domain. You can find my thesis here. What it basically boils down to (after alot of filtering) is a comb-filter convolution. My code is an adaptation of this project, which contains Matlab files for you to see how it works.
My code (both in C++ and the Matlab port) is not publicly available due to possible copywrite issues with my university, but if you email me at dberm22[at]gmail[dot]com, I'd be more than willing to ahem::discuss my work with you.
Try using a beat tracking algorithm. Beat tracking is a distinct problem from onset detection.
I think there's a good algorithm in the Queen Mary plugin set for Sonic Visualizer. The plugins are open source, so you can have a look at the code to figure out how they work.
Or do a search on google scholar for "beat tracking". There are a number of effective approaches. Dan Ellis' is a good one to start with. It's intuitive, and there's code available in Matlab and Java.
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Ethical Dilemma: Should I still cater for IE6 as a web-developer.
5% of IE users last month use IE6. So I am curious if people think I should support it....because I haven't been.
http://www.w3schools.com/browsers/browsers_explorer.asp
I wouldn't..Its not worth your time and effort for 5%.
What is your product or service?
What percentage of conversions come
from that 5% of ie users?
What percentage would come from
those users if your site had
better support for their
browser?
If you answer those questions, you won't have to ask anybody else whether you should support IE6 for your site or not.
No. But someone is going to say you will lose customers if you don't.
It's time for IE6 to die, already. Those of you who are still using tube monitors and abacuses, please give us a break and come into the 21st century.
As Bobince points out in his comment above, it's unrealistic to put a coat of wax on a VW Beetle, and expect it to look more like a Porsche.
Businesses tend to keep IE6 on as legacy applications might only support IE6 so you tend to find they are in no hurry to roll out newer versions of IE as they would have to update in-house applications.
Probably not, but if your consumers consist of people that use old browsers, it might be a good idea.
It's not that they're 5% of your user base, they're 5% of your IE user base. In otherwords, IE6 accounts for 5% of 30% of your traffic.
I would say no, because you'd be sacrificing too much time and features for too few people. That and big websites like youtube and firefox have dropped support already.
IE6 users are almost exclusively corporate users whose update schedule is mandated by the corp. If your userbase is the general public then that 5% figure will be much lower and as such I dont think supporting IE6 is worthwhile.
I have for several years tried to get an estimate of the emacs user base.
Does anyone have good estimates besides the naive guess of the Linux/unix install base?
Getting hard numbers for this seems fairly difficult. Here's what I found:
http://siteanalytics.compete.com/emacswiki.org/?metric=uv
Where it says in May 2010 there were about 13,000 unique visitors that month. Alexa
http://www.alexa.com/siteinfo/emacswiki.org
says that about .001% of all the Internet users visited emacswiki.org in the last month. Both sites put emacswiki.org in the top 150,000 sites on the web. It seems to me the number of times each version of emacs is downloaded could be discovered and might shed some more light on the topic.
I leave the transformation of these lies^H^H^H^Hstatistics into a number of users as an exercise for the reader.
Now that Wolfram Alpha is released, I am interested in finding out if it can be used as a time-saver in daily programming.
What would you use Wolfram Alpha to do, that earlier took you more time to do manually?
I guess the "Web and Computer systems"-examples is a good start, but there must be more hidden gems that will be really practical for us programmers.
A short list of examples:
MD5-hashing / SHA-hashing
Quick lockup of unicode and HTML-codes for symbols
Color-codes
Please only include one search query per answer, then we can rate them to get the best ones to the top.
(I made this one a community-wiki, since we will be using the voting for ranking)
Note: If some of the links in the answers don't work (eg: wolfram doesn't find any results, then replace all + with spaces..
I might 'save time' by not playing around with it and doing real work instead. :)
Calculating lift coefficients of NACA profiles (example).
(I made a program for this, but it's nice to have the option to do it quick)
I probably won't use it for anything. I don't know about you, but I deal with enough black boxes on a daily basis, and I'd rather use the ones that have been tried and tested thoroughly.
This might come back to haunt me later, but it strikes me that although there might be a point to WA used in a mechanical manner, from my perspective I'm thinking it's not the hard calculable information questions which are the problem which needs to be solved, it's the soft human data which defies classification or rigid modelling. Google seem to understand this, not sure Stephen Wolfram does.
OTOH it could be that anyone can be Colin Laney now.
Someone double check me here:
The MD5 hash of "Wolfram Alpha" (no quotes) is:
882b 0be2 79eb 7e88 86cd 3dae 19c1 d267
And not:
a615 9984 9aee b7be 3091 68bc 0ab7 ?
EDIT: The hash changes every time given the same query...what kind of hash is this?
http://www14.wolframalpha.com/input/?i=MD5%22Wolfram+Alpha%22
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Inspiration -- Southpark game
(very popular if you see download count on download.com ,,, did he ask for permission ??)
I am making a 2d game based on dexter's lab theme. I've got the sprite of dexter from GSA. basically I'm not an artist, so I have to depend on already available sprites, backgrounds, sfx on websites like GameSpriteArchive etc.
But is it okay/legal to use the dexter sprite I have got ?
I wish to release it publicly too, so shall I have to make lot of changes to do that?
Is it possible to get a permission to use the sprite?? My hopes are very less in getting permission.
Besides all that my basic plan is -
Dexter's sprite from google search
Enemy sprites from various GBA/SNES/etc games
tiles/objects from these retro games
Background art and style from blogs and portfolios of artists behind dexter, powerpuff girls, and samurai jack
I am not a lawyer. This is not legal advice.
If you made the sprite yourself, you'd be fine. If you got a release to use it from the creator, you'd be fine. If it was released into the public domain, you'd be fine.
Anything else, you'd have a definate problem with.
There's also the possible problem you'd have even if you create the sprite yourself -- the likeness of the character is likely copyrighted. However, that's not as cut-and-dried of an issue.
Unfortunately, this is one of the things you'd need to ask a real lawyer to get a firm answer on. If it's for your own use and that of some close friends, you might be able to get away with hoping you don't get noticed (like most people who speed). If you're planning to include this in something you distribute to the public (even more so if you sell it), you're likely to run into problems.
probably not legal, since Dexter's lab is published by Hanna-Barbera and was created by Genndy Tartakovsky. They would have to grant you a license - but it can't hurt to ask!
You probably won't have to get permission if they don't notice -- it's the old "legal unless you get caught" thing. However, I strongly reccomend that you DO get permission from the creators or not use it at all on purely ethical grounds. After all, you wouldn't want somebody appropriating your work, right?