skysight-inc/HackerNews huggingface dataset:
Theory 1:

If this is related to retweeting/@replys/etc then you can understand why the "bug" exists. Since the users rather than Twitter came up with the RT concept Twitter only envisioned tweets (they didn't even invent the term tweets) as text with no metadata. If, for the purposes of expanding the service they wanted to mark each tweet with some secret metadata that is stripped out on the back-end it is too time-consuming to add the attribute to every tweet (they are on MySQL if I'm not mistaken) so they come up with a syntax for the metadata, write some code to filter tweets that inadvertently use that syntax, and start using that syntax behind the scenes in preparation for new or more efficient implementation of features.

Theory 2:

Or maybe it is just related to their templating system.

[Addendum]

Either way I find it kind of sloppy. It would not be that difficult to escape text in tweets that marches your syntax. Web apps should avoid revealing anything about their internal workings. This is how XSS attacks happen.
Beyond Convexity: Submodularity in Machine Learning
I much prefer being talked to this way instead of hearing about "non-Ruby repositories."
If literally everyone were stupid in the sense of the essay, society would crumble very quickly. It is doubtful that anyone sophisticated enough to understand such a definition of stupidity would fail to understand this implication.

On the other hand, I have many friends who see stupidity everywhere, and who recognize it as an inveterate condition of our species. They are not openly contemptuous of everything (for that would serve no one) but they are sober, sensible, and harmless. They are not stupid.
What it takes to go indie (week 1)
has there been any talk of (or is there) an open, xml-based event markup structure? It seems like if there was a widely adoped standard tagging for event data implemented, all kinds of great things could happen in this space.
Dutch newspapers, magazines.

Volkskrant, AD, Quote Magazine and a whole bunch of others.

Quite possible that that would not be a feasible strategy abroad.
It's a lot more efficient for the journalist to maintain integrity in the authoring of information than it is to have every reader scrutinize that information for a lack of it.
Hi HN: Building a 'Group Buying' service
My friend and I are building a 'we'-commerce platform (http://hopponit.com). We are aware that a couple of very well-funded startups (namely Mercata, funded by Paul Allen, and Mobshop, co-funded by Marc Andreessen) have failed in this area. However, there's plenty of academic research on this topic. Do you believe that a group buying service can be made valuable? If so, I'd love to read your thoughts on 'how'.
No, people should donate more to open source projects.
You never used it (along with basically EVERYBODY ELSE) and you think they dropped the ball? :-)
I was expecting a big, tearful "OMG I did it and I am sad, forgive me" or something, but actually, there was nobody confessing to anything. It was a story about how a fake reviewer was found out, no more.

Misleading title.
The Difference Between Undergraduate and Graduate School
I see He test Tornado in MacBookPro, i think mac os dont have epoll, and tornado use select(). so i think he will test it in linux (2.6).
Watch Two and a Half Men Online - Satellite TV Guru
Thanks mbrubeck, great reference.

I highly recommend this book: http://www.amazon.com/Japanese-Step-Innovative-Approach-Spea... as another excellent resource. Written by an engineer for engineers, with detailed flow charts for the various conjugation rules and other aspects of the grammar.

The book lists the various common sentence structures then teaches you how to expand the various fragments to construct more complex sentences. Somewhat similar to learning via a CFG and deriving a parse tree. if you want to absolutely nail your Japanese grammar, this is a solid logical way to go about it.

Book's biggest drawback is that it is rather dry. You will need to complement it with a book that focuses on vocabulary, idioms, and colloquialisms so that you don't sound like a robot.
Hmm...

A full-featured event/calendar plugin app might be really cool...

But the "space" is very amorphous. It could include anything from getting twenty people with similar interests together on a Saturday night to rock concert and lecture promotion.
Meetup.com has lots events that I’m interested in, but they only store their own meetups and not all events.

Uh, that doesn't qualify as "sucking"!
My websites:

http://www.healthgazelle.com

http://www.kidslikemine.com

http://www.solanorail.com

I can't seem to escape social causes, in spite of sometimes wishing I could. My hope is to someday figure out how to monetize some of what I do.
hCal+hCard Upcoming implements it.
If you determine the number of pivots when you write the algorithm, they could be sorted in constant time. It would just require a lot of if-else branching...
Good point.

This filter might be a search engine but I actually have other ideas on this front...
The sheer number of environmental, dietary, and lifestyle factors that would have to be adjusted for in a comparison of present-day cancer rates and those that took place ~160 years ago in Ireland would likely make any conclusions that you could draw conjectural, at best.
Brilliant! Where was this all my life?

I only wish he would deconstruct Kanji and the resulting combinatorial explosion in the same way...
Yes, Yes, Yes

Organizing time-based items is much less trivial than people imagine...

And there is less immediate bang for succeeding than other search spaces. And determining if, say, recurring event is still recurring two months after it is first posted is tricky.
"To solve the problem of inaccurate data, I think a spider should be employed that searches the web for events and adds them into the database."

Could a microformat handle the job of tagging an event and let google do the walking? Maybe you could build a startup to organize a portal after that, but can you really crawl better than the big crawlers?
Visualizing Digg.com's Commenters
It works based on the diamagnetism of water. Water has a very small response to magnetic fields. As a result, if you apply a large enough field, you can exert a significant force.

The scaling problems are that this requires massive magnetic field (even for mice). Generating such things is nontrivial.
Commentry - Data Visualization Experiment
In grad school I managed to take advantage of the pacing effect in an educational setting. I was teaching linear algebra. What I did was make the homework incremental - 1/3 of homework on today's material, 1/3 on the previous week, and 1/3 anything in the course. Those thirds were in increasing order of difficulty.

I also started every class with a question/answer period. The rules were simple, the questioning will last at least 10 minutes, and you don't want me to ask the questions. :-) Anything that had come up in the questions that seemed to be a point of confusion was sure to be added to the next homework set.

I won't go into what else I did with that class, but the end result is worth thinking about. First note that I gave a ridiculously hard final. Other grad students who saw it thought that the class would bomb. Secondly they aced the test. What do I mean by aced? Well I had a bonus question which fellow grad students thought nobody would get. 70% of the class got that question, and a good fraction were over 100% on the test. So they must have studied hard, right? Nope. I ran into some students several months later. They told me that they tried to study for the final and stopped after a few minutes because it was useless, they knew everything. And several months later they still knew much of the material cold!

The thing is that none of what I did was very radical. The principles have been known for a century. Psychologists have been trying to get people to listen for that long. I learned about it in the 80s from a university course I watched on TV. (British Columbia had a TV channel devoted to lectures for correspondence courses.)

Yet, despite how dramatic the effects are, nobody listens and nobody takes advantage of it.
> (which implies anybody between the age of 10 and 19 inclusive)

So ? That's what I wrote wasn't it ? I realize 19 is 'a teen' but it is at the end of the spectrum. Saying just 'teenage' makes it ambiguous and is suggestive of someone much younger than nineteen, you tend to guess that must be in the middle of the range, whereas in fact it was the last entry in the range.
i would consider fruits to be a nontrivial group. not saying they're a major part of everyone's diet necessarily, but they're not quite something to be brushed aside as not significant.
All In One Design Checklist
The following checklist serves to summarize the major points and to help you ensure you've done all you should before finalizing any web site you are creating.
They should require every first year graduate student to read this or something similar. The ratio of well to poorly written papers is far too low.
Have you see http://www.thesponty.com ? (disclaimer: I'm co-founder)

It's has elements of Twitter, but is built specifically for casual social events. Sponty gives users a way to broadcast their social intentions, like "Lunch in Harvard Square", where all their friends are implicitly invited.

In addition, Sponty tries to answer two questions:
1. What are my friends doing today?
obviously this doesn't work right away ... you need to have some friends on it first.

2. What are other's doing in Boston/network today? We show you all the public events people have posted in a given network:
http://www.thesponty.com/whatsup/#/today/Boston

We're trying to crowd source the answer to this question, because crawling is too hard and too inaccurate. Also, most of the really interesting stuff cannot be crawled.

One more: We categorize events by icons. For example, here are beer related events in Boston today:
http://www.thesponty.com/whatsup/#/today/Boston/beer

or music:
http://www.thesponty.com/whatsup/#/today/Boston/music
Trying to game the system as far as nutrition goes is a losing battle if history has shown us anything. Every time someone half-way understands some new aspect of nutrition we flood or deprive our bodies of something we've eaten successfullly for generations upon generations.

I like Michael Pollan's simple advice: Eat food. Not too much. Mostly plants.

One other thing, from a behavioral perspective, if you come out with a new health food, people don't stop eating bad food and start eating more health food, they just add the health food on top of the crap.
Use this: http://www.amazon.com/Remembering-Kanji-Complete-Japanese-Ch...

And this: http://kanji.koohii.com/

The problem becomes tractable, and maybe even a little friendly.

Fwiw, the explosion isn't really combinatorial. It'd better if it was, because at least that would be predictable. No, it's best though of as entirely irregular combinations of a medium-sized number of components. But the aforementioned resources help you deal with it.
Complicated, indeed...

I don't see why one should necessarily assume that the diets might prevent cancer before it happens will cure cancer once it happens, yet it seems like the article is making something like an argument for this...
Try: http://www.thesponty.com
Have you informed their listed security contact or just the support crew ?

See '37signals'...
We aren't vaporware but thanks for the heads up on email validation / SQL injection.

Perhaps we can have a better discussion here:
http://news.ycombinator.com/item?id=818342
No response at all? I think you owe it to them to try once again. Send an email with a read receipt. Once it's read, give another 48 hours.

If you still haven't heard from them at all, see if you can find the email or phone for the president or CEO. If that doesn't work, go public.

It's dicey airing somebody's dirty laundry in public, so in the least I'd try to hold on to as many documented instances of your attempting to contact them as possible.

Basically, ensure your ass is completely covered prior to going public.
The exception proves the rule? A blogger righted the issue with Dan Rather a couple years ago as well. I suppose we have to look at the majority case here and the majority of bloggers are regurgitators. The news regurgitates a lot too. I have lost a lot of faith in our institution of media lately.

The journalistic ethic is going in the toilet because it doesn't spur ratings...
I could have sworn I read 1500 there, I was wondering... must stop drinking tea.
Odds are that either your email didn't reach the right person or they didn't understand it -- this is especially a problem if you don't have an established reputation.

If you want to send me details via email (cperciva@freebsd.org -- my GPG key is easily findable) I'd be happy to look at this; and I can probably get a response by hitting people with the FreeBSD Security Officer cluebat.

EDIT: Also note that depending on the complexity of the issue, it might take more than a week to figure out a good way of fixing it -- we've had issues in FreeBSD which have taken much longer than that. I wouldn't say that a hard one-week dead line is reasonable in all cases -- generally I'd be satisfied with weekly reports showing that progress is being made.
I would crowd source it.
I just encountered an interesting and relevant quotation from Chis Lattner:

"To head off the obvious question: this syntax and implementation has nothing to do with C++ lambdas. Blocks are designed to work well with C and Objective-C, and unfortunately C++ lambdas really require a language with templates to be very useful. The syntax of blocks and C++ lambdas are completely different, so we expect to eventually support both in the same compiler."

http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-August/00267...
Did anybody else read this as "How You could make $120B a Year". (I should probably check my spam folder less frequently.)
There are several 'classes' of bloggers.

There are those who do their homework, have writing skills and do their utmost to produce quality content, there are the plagiarists that will copy whole blogs verbatim and pass them off as their own, in between there is everything else.

To put all bloggers in the same corner is the same as saying that all people are unethical. The 'majority' may be right, it may be off but my feeling is that there is plenty of excellent content out there and plenty of crap. I wouldn't be so fast to discard the majority, especially in other languages than English the amount of regurgitation is less than you'd expect.

Regurgitators = thinly veiled plagiarism, what in school would be called 'rewriting' instead of 'writing'.

And newspapers that print bloomberg or reuters stories are also regurgitators.
Reminds me of Japanese: The Spoken Language, which is what I used to learn Japanese. It's quite challenging at first but I can't think of a better way for an adult to learn the language well.
My experience has been that most things are a two-edged sword. Saying some things are "bad" and other things "good" is usually a huge oversimplification that is tantamount to lying.
I have my own pet theory on cancer. But that's probably not relevant to the discussion.
Of course not, no one COULD be completely stupid or completely helpless all the time or they'd be DEAD. And similarly I doubt, but it isn't as obviously impossible, that no one is bandit or intelligent all the time.
TheNanomancer on Twitter
I can't upvote this enough. I went from 200-300 Kanji characters that I acquired painfully to now 2053 Kanji characters using RTK in about four months. I use Anki (http://ichi2.net/anki/) to do reviews, but the Kanji koohii site is awesome for stories and has a nice active forum. I keep track of my progress here: http://kd7yhr.blogspot.com/
"Avoid welcoming visitors to your site?"

This sounded counter-intuitive at first but it makes sense.
I actually use Anki now as well. Fantastic software, that.
The reviewer's techniques aren't even particularly interesting. It's no surprise that she (presumably) was caught out, since anyone could have verified that bias with a quick glance. I'm more interested in learning about people who do this for profit, how many of them there really are, and how they manage to stay hidden.
》 I've not seen any good evidence that the government can do it for less.

France? Any argument against single payer has to cope with the multitude of countries which provide health care better and cheaper to all of their citizens.
Once you've finished the article, there's a lot of reading material on the SuperMemo website:

http://www.supermemo.com/english/contents.htm#Articles

Really interesting stuff. The website and the software user interface (at least judging from the screenshots) are terrible, though.
Yes, you are right. I wish there was a chart showing how this effect works. Also the eye may get used to a design. I used to think that HN font was too small and line spacing too thight but now it looks normal to me.
FACE!
One of the few magazines I have held on to over the decades is the issue of Whole Earth Review from Spring 1987 that has this essay in it. Also of interest to hackers in that one issue is a good early summary of nanotechnology by Drexler, an interview on the Connection Machine with Danny Hillis, and one of Stephen Roberts's articles about his computerized bicycle. In some ways Whole Earth Quarterly was like an early version of HN, but with a somewhat different emphasis.
Get This Twitter Guide Tweettastic Twitter Traffic Revealed For FREE
Well for those of you who want to get into Twitter or are already using Twitter and want to learn more about it without the hassel of searching web for countless hours then this is your opportunity.
This article is written as if SuperMemo were the only software that uses spaced repetition (SRS) algorithms for learning. Actually there are quite a number of other programs out there including some that are free or open source. I've used SuperMemo for years on my Palm and found it very useful for learning French but the software (at least for the Palm) hasn't been updated for many years and doesn't give the user any control whatsoever over how the program is used. For learning Chinese I've moved to a commercial product called Pleco on the Palm which is basically a dictionary but also has elaborate SRS functionality, it's really light years ahead of SuperMemo. Other more generic SRS programs include Anki and Mnemosyne. Unlike SuperMemo, it's easy to migrate your flashcards among these other applications. One other point, SRS is a huge help to learning vocabulary but learning words is only one part of mastering a language.
I am going to knock this because I used it. Problem: the written part of Japanese. You read this book and learn how to talk a bit, take a plane to Japan, then bam - surrounded by the visually amazing, but daunting Kanji. The Jorden school of thought totally disregards the written and focuses on the spoken. That is fine, but the wrong path to real Japanese fluency. The best way to start learning Japanese is to get into the writing system (hiragana), Kanji (see http://en.wikipedia.org/wiki/Remembering_the_Kanji), grammar and start reading real Japanese. がんばって！
So the Atlanta lawyer did what many of us would – he surfed to Amazon.com and began trolling user reviews for high-end espresso makers.

This brought a completely different scenario to mind from that which the writer intended :)
There is a company based here in Japan called Smart.fm (formerly iKnow) made up of really great people doing similar work.
If the bandit does something which causes you to harm him, he was a stupid bandit.
Are you learning just the meanings, or the meanings, kunyomi, and onyomi?

I ask, because I'm somewhere in between ２級 and １級 with the JLPT, and since I've only spent a collective six months in Japan, it's a bit of a struggle sometimes to retain vocabulary.

I'm finding that I have a very easy time with the meanings, and so I can figure out new compounds pretty easily. For example, in the novel I'm reading last night, 脱皮 came up, and although I figured out the meaning (a snake shedding its skin, a crab moulting, etc.), I still had to look at the dictionary because I couldn't remember the onyomi for the first character, even though it's very common.

Reading out loud has helped a lot, and I'm going to start blogging in Japanese about starting a company, but I'm always looking for tips on improving. :)

Newspapers still send me running for the dictionary, but I think that's because I read a lot of articles about politics and business, which are very kanji-heavy.
If you can get the price significantly below the lowest price people can find online, and it's not too inconvenient to use your site, then yes you can have a successful group buying service. I'm not sure how feasible that is, because the things people are most likely to buy online in a group are electronics, computers, phones, etc., and the margins are already so thin you'll have trouble beating buy.com, newegg, and amazon.
I'm sorry but smart people don't make wild generalizations because they understand it's impossible to easily categorize almost 7 billion unique people. So far in life I've personally encountered people who could be defined as stupid but they are quite clever. This makes them appear to be far smarter than they probably are. I've encountered lots of very smart people who seem to spend a significant amount of their life complaining about stupid people instead of using their intelligence for something more constructive. I've encountered ignorant people who are willing to learn if you give them a chance. I've encountered smart people who are close minded and stubborn to a fault. I suppose this article is a joke and I'm taking it too seriously. I can't stand intelligent people who feel the need to put down other people. Always makes me wonder who's really the smart one. The ignorant person who is happy with themselves or the intelligent person who needs to belittle others to achieve the same thing?
This is a long-standing debate. :-)

I do agree that people who use this approach are behind others in reading / writing performance. Indeed, it took me awhile to catch up. But fortunately this is something you can pick up on your own fairly well.

On the flip side, to be brutally honest, 99% of the people (that I've met anyway) who come through programs that focus on reading / writing sound horrible when they speak. They tend to suck at grammar, their intonation is all wrong and have a very hard time creating complex sentences. It could just be the sampling that I've interacted with but I can always tell the difference immediately between a JSL student and someone who focused on reading / writing.

Why is this important? It depends on your job / life but I personally spend my most important moments interacting with people via speech, not text. I'd much rather create a strong impression in person up front. It makes all the difference.
Falling Real Wages for College Graduates
A lot of fluff here but still interesting stuff.
Thanks. I was just wondering if there was a similar open source project.

Anki: http://ichi2.net/anki/

Wikipedia entry about this technique: http://en.wikipedia.org/wiki/Spaced_repetition
Most of the proposals I've seen call for rolling out IPv6 and CGN at the same time, because giving customers only CGN would be obviously worse than what they have now.
The only thing surprising here is that she was so easy to discover. Does Amazon require people to use real names? Do they actually check IDs?
Facebook leaking Notes?
Dear Regulators: Never Trust Someone Who Doesn't Use Email
Hunter-gatherers don't live long enough to get the kinds of cancer that post-industrial westerners do.
The intended purpose of my comment was to highlight the following anecdote: it seems that books are pirated the day they come out, which is already pretty usual for movies and software, but, to my knowledge, not for books. Cheers!