skysight-inc/HackerNews huggingface dataset:
You end up in, essentially, an philosophical debate over what issues are most important - don't go there. Such debates cannot be resolved (in the same way that the halting problem cannot be resolved) because they rest on fundamental disagrements about axioms of morality.
How is it like to build a startup that “no one needs”?
Thanks! I just put that series on my Netflix watch list.

On topic: As far as I could tell from working as a contractor at Google last year, they constantly improve their infrastructure with small changes, with occasional 10x improvements like MR, Sibyl, etc.
You relate Haskell to standard theory and Clojure to non-PL-theory structures. I think the real issue is that strongly-typed lazy functional code (Haskell) and dynamically-typed isomorphic code (Clojure, and Lisp) have an "impedance mismatch" such that they don't inter-translate very well. I think that's based on the different foundation of each language.

Haskell is strongly typed and lazily evaluated, which easily enables functions to take only one argument at a time. Although a function could take a tuple parameter, it can be, and usually is, rewritten to take each component of the tuple as a separate parameter, which makes the strong typing and builtin currying simple, higher structures like monads possible, and the syntax can designed to suit this style.

Lisp functions, on the other hand, must take many arguments at a time to cater to the isomorphicity of the language. It's therefore much more difficult for parameters to be typed, or to curry them. The syntax requires explicit visual nesting. Inter-translating between this style and the Haskell style therefore is difficult.

I'd even suggest the Haskell and Lisp styles are two different peaks on the ladders of programming language abstraction, and the poster child of each, monads and macros, just don't interoperate very well, simply because of the different required foundations of each language.
Interesting analogy used in the article:

Luhnow has done to the Houston Astros what
Mitt Romney used to do to steel companies
while at Bain Capital: stripped them down
with ruthless efficiency to build them
back up again, stronger and better than before.

Given what actually happened to some of the steel mills that Bain acquired: http://www.reuters.com/article/2012/01/08/us-campaign-romney...
To each his own, reasonable people may differ, but once I saw the title and author, I instantly ordered it.
If you're implying that I am identifying myself with some tribe and therefore immediately dismissing the entire research program, I disagree and regret giving that impression. If this is your impression, I am curious what about my comment gave you that impression, because I genuinely do not see anything in my comment that hints at a specific ideology or tribe, or an instant middlebrow dismissal of an entire research program. I am not a "Smithian" or whatever tribe is being hinted at here, and I did not dismiss the entire research program. I only pointed out what I think is a misrepresentation of that well-known Adam Smith quote.

I find the research quite interesting, although I don't believe that we can conclude anything about the validity of any belief based on attributes of the people espousing the belief. That's the ad hominem fallacy.
This doesn't look like it's ready for launch yet. None of the links, except for Sublime Text (which looks like a test link) work. If I were you, I'd consider getting making this a working MVP before posting to HN. That way, the people who check it out will stick around.

Edit: On another note, I can't wait to see the finished version!
"Give me something at a fifth of the price and I'll buy it"

Sorry, but that's a crappy argument. Pony up the cost if that device is so important to you.

http://the-digital-reader.com/2014/03/27/sonys-13-3-ereader-...
that is probably because end-to-end is not fully implemented yet...
thanks, I hadn't heard of zotero before, so it is like evernote except the data is stored locally on your own computer?
The concept of "learning styles" is something _we_ invented. It's not as if it has any intrinsic reality as a category, at least until we demonstrate it does.

This article is arguing (rightly) that it's not a useful way of thinking about how people learn. Or, at least, obscures the reality of how people _actually_ learn and makes it more difficult for us to explore that reality.
Common App Rejections
LCD Soundsystem's James Murphy Is Making Music Out of Tennis
I read the story. In what case would it be that disastrous to reboot a database server?
Does anybody else find this squabbling kind of embarrassing?

It's quite clear that California has no political, fiscal or operational capability to finish (or even begin!) this project.

Given this premise, how would you evaluate the discourse surrounding it?
You'll note that I didn't say they were rubbish BECAUSE students use them as an excuse. What's more, I didn't say that students use "learning styles" as an excuse, only that they believe whole-heartedly in their reality. As evidence of the fact that they believe in their reality, they say things like "This explanation doesn't really work for me — I'm more of a visual learner."

Why do you think "learning styles" have any independent reality to begin with? Why do you think the specific sense/modality/medium is of primary importance when it comes to understanding or modeling how people learn?
Separate and unequal has been the rule for a while now. Honors, AP, electives, etc. It's even more fundamental than race.
If anyone else is wondering like I was that's 440$ a year in electricity at 15 cents per kWh, which should be a reasonable rate. Some places it will be double or more though.
Show HN: A real-time Twitter clone in 300 lines of Angular.js
The Hunt for Brooklyn's Hidden Creeks
http://spaceflight.nasa.gov/gallery/images/station/crew-27/i...
http://spaceflight.nasa.gov/gallery/images/station/crew-27/i...
http://spaceflight.nasa.gov/gallery/images/station/crew-27/i...

for more of them both. Some great shots.
What Should You Do with 2.7B People at Your Fingertips?
If you haven't read it yet, you may find Nicolelis' book Beyond Boundaries[1][2] interesting.

Or, for his more academic work, see: http://www.nicolelislab.net/

You might also get some mileage out of searching Google Scholar for some relevant terms.

http://scholar.google.com/scholar?q="computer+brain+interfac...

Also, from what I can tell (and I am by no means an expert in this field, so I could be wrong) not everybody makes a hard distinction between "Brain Computer Interface" and "Computer Brain Interface", so be careful of overly limiting your searching. For example, Nicolelis seems to prefer the term "Brain Machine Interface" and, from what I remember of Beyond Boundaries, treats them as (potentially) full-duplex channels.

[1]: http://www.beyondboundariesnicolelis.net/~beyond/wordpress/

[2]: http://www.amazon.com/Beyond-Boundaries-Neuroscience-Connect...
If I understand correctly, from some news I read [1], they are already sharing information with at least the DEA and the IRS. The DEA and the IRS were told to cover up the source of that information by coming up with their own independent leads to recreate the information obtained ("Parallel construction" is really intelligence laundering).

[1] https://www.eff.org/deeplinks/2013/08/dea-and-nsa-team-intel...
Embedded programming languages are really cool. Lua's still ruling the roost, as far as I've seen, but there are some nice options out there.

I'm currently using mruby for a project and have been quite happy with it so far. The community around it is still somewhat thin, but the code quality is good and development is quite active. https://github.com/mruby/mruby
Isn't this a bit like "Students who take too many science classes are likely to be ungodly?"

The article starts off from the presumption that greed is bad, and then whines that people who understand economics better are more greedy. Perhaps it could instead come to the conclusion that people who understand economics are more intimately familiar with the way that best-possible outcomes do tend to arise from everybody acting in their own self interest and thus that "greed" (in at least certain senses) is not a vice at all?

Incidentally, as for the Dictator Game, I imagine that you get very different results with economics students and others who are intimiately familiar with the "Dictator Game" and similar psychological experiments than you would with someone who has never heard of this situation before. That might be an interesting experiment.
Not just the Shuttle, but a Soyuz and a European ATV. Every significant spacecraft model at the time in one photo.
I'm in Ohio, where it apparently averages around 0.11USD per kWh, so probably closer to ~320USD here.
How to stimulate the open web
> It's called a self-fulfilling prophesy [sic].

This is another error I'm seeing more and more often.

* Prophesy (verb): to predict.

http://www.merriam-webster.com/dictionary/prophesy

* Prophecy (noun): a prediction.

http://www.merriam-webster.com/dictionary/prophecy
Firefox 3.5.19 on Mac OS 10.4.11

Yeah yeah, I know.
The World's First Smartship
No, I didn't say that. I only said that students believe (very strongly) in the "reality" of learning styles and as evidence of this statement they say things like the quote I gave.

I do think students sometimes use the idea of "learning styles" as an excuse, although in my experience these are the types of students who will use whatever is within reach as an excuse. That has no bearing on whether "learning styles" actually exist, though.
For the iphone at least the problem is apple will not approve apps that try to discover beacons. Identifiers must be baked into the application, which greatly limits their utility.
I liked this. I also wonder if it'd be worthwhile for me to take a few months off of work and try just poking away at security bounty programs. I doubt it would pay off to start with, but it seems like a pretty lucrative path. I know the OWASP Top 10, but don't really know my way around Burp Suite or anything.
> Student achievement does not correlate strongly with teachers’ years of experience in the classroom (beyond the initial few) or with the caliber of their preparation—whether they have acquired certification, earned a master’s degree in education, or aced state licensing exams.

AFAIK this is as measured by standardized test scores on evaluations that aren't designed to measure teacher performance, and in fact are not even capable of it.
I don't like this article. Here are my main concerns:

1) The review article cited at the start concludes its abstract with this:

"Although the literature on learning styles is enormous, very few studies have even used an experimental methodology capable of testing the validity of learning styles applied to education. Moreover, of those that did use an appropriate method, several found results that flatly contradict the popular meshing hypothesis.

We conclude therefore, that at present, there is no adequate evidence base to justify incorporating learning-styles assessments into general educational practice. Thus, limited education resources would better be devoted to adopting other educational practices that have a strong evidence base, of which there are an increasing number. However, given the lack of methodologically sound studies of learning styles, it would be an error to conclude that all possible versions of learning styles have been tested and found wanting; many have simply not been tested at all."

I would happily replace the entire linked article with these two half paragraphs! Note that this means we don't know there isn't learning styles; we just know that those handful of ones so far tested have proven ineffective.

2) That a classroom does better with a math-through-music approach does not mean that all students do better through that. The cited article for this study doesn't appear to make that claim or any claim about the existence of learning styles (but it's paywalled). Clearly a classroom learns better when instructed in a language that the students understand - does that mean that learning styles don't exist?

3) That classes learn best when given a mixture of styles of information does not mean that there are no learning styles. (If you told me that mixing styles improves a class's learning, that would make me think it more likely that learning styles exist - otherwise it's more likely that there's some optimal single method that is better than trying all available methods.)
I've done a lot of work with pgpool over the past year, be aware there are lots of situations where it won't work for you. For example if your devs don't write their own SQL and instead use a framework with limited control you're going to have a bad time.
Happy to dive in, but that's not much to go on!

For starters, can you define what you mean by "style of explanation" and give me a few examples? For each example, give me examples of students with whom that style clicked, examples of students with whom it didn't, and your best explanation for why it did or didn't in each case.
> Net, with the axiomatic foundation I outlined, we don't have to struggle, consider, or even mention either frequentist of Bayesianism. That should be welcome good news.

People have been building on top of the axiomatic foundation that you outlined for decades. This is old news.

You mention Breiman's book on Probability. He has also a book on Statistics. Maybe there is something to it after all?
Most often people like to hire people who are like themselves. If the interviewer has a fancy degree then he/she will be looking for someone else with a fancy degree. If the interview is self-made then he/she will be be looking for self-made.

There is a certain level of experience and insight required to rise above this as an interviewer. Having a good understanding of the direction of the company and the actual skills you're looking for. I've only seen a few people who actually got this but most of them were looking for clones.
You're saying that the issue of "who's segregating from whom?" is unsolvable? Probably. It's also irrelevant.

Looking purely at the effects of segregation should answer if it's a good idea. For an individual it's possible to benefit from segregation but as a group we're worse-off. Arbitrarily picking out second-class citizens and lowering their opportunities is a short-sighted idea even if in the near term that means that more resources can be used to advance your own interests. It doesn't matter if people are choosing to be disenfranchised, it matters that we're all hurt by it -- suicide is roundly discouraged for the same reasons.
Guile looked to me firmly in the "midweight" category I mention in the article. I don't doubt it's a very good interpreter, in the same vein of Gambit or Chicken, but it required a combined size/platform commitment way above I was considering. Basically anything more complex than S7 is playing in a different league than little single-file interpreters like TinyScheme or femtolisp. If I had to start from scratch I would certainly consider a bigger, much more capable platform, but it's really late in the development of the game to add it.

I didn't know about ypsilon! The incremental/short pause GC looks very interesting indeed (although for the current usage in The Spatials I run TinyScheme as part of the map generation and then I completely unload it, so no GC, all the script logic gets encoded into command-like objets inside the C++ heap). But it appears it hasn't been developed for awhile. Still it's quite small, I will definitely look into in the future.
In many African and Asian cultures, the culture is to swarm around the vendor and let them process requests in the order and manner they decide. In a couple countries I've seen, the order of the line only holds when there are physical line barriers and "no bargaining" signs in place.
This guy would have more predictible performance and higher reliability if he had organized the array as two 12-drive raidz2 vdevs (instead of 18-drive and 6-drive). The reasons are because (1) the chances of triple drive failure though low is higher in a 18-drive vdev than in a 12-drive one, and (2) performance (IOPS) is variable between two asymmetrical vdevs.

There is very rarely a good reason for doing asymmetrical vdevs in a single ZFS pool.

I approve of his choice of HBA (based on the SAS2008 chip). For those looking for even bigger setups, I maintain a list of controllers at http://blog.zorinaq.com/?e=10 where you can even find 16-, 24- and 32-port controllers. 8-port ones are the most cost effective as of today.

I have been a happy ZFS user for 9 years, both personally and professionally. Using snapshots, running periodical scrubs, having dealt with a dozen of drive failures over the years. Everything works beautifully - it's a pleasure to admin ZFS.
The above post didn't deserve to be downvoted (and I upvoted it on that ground), because it's topical and insightful. Regardless of how some anonymous reader with a mouse and an itchy index finger feels about the expressed opinions, the post meets all the criteria for a useful contribution to the thread.

Tl;dr: I find anonymous downvotes really, really irritating.
The requirements included "Windows (compiled with MSCV) and iOS." Guile can do that?
Breaking News, Apple is working with Lada on self driving cars.

Seriously, Amex seems to have not heard of any tech progress since 1998. Their website is atrociously bad.
I live in Ireland where a fair few retailers support NFC payments and I have a card that has it. Most people don't use it.

Apple will be the first company to convince the rest of my technophobic family to actually use the technology. You're not wrong, in payments they will certainly take more credit than they are due. But, they will increase the uptake more than anyone through their implementation and you have to give them credit for that.

The interesting thing about that insight is that it does seem as though people are trying to copy Apple before they have even entered the arena. They will probably, fairly or unfairly, also get credit for creating the wearables market. My best guess is that Apple will freeze the market on Sept 9th with a product that is far superior. If they do, that conversation may ring true in the next few months.

I probably give them too much credit and you give them too little - seems like a reasonable balance.

Also, completely agree that Wholefoods are not entering because of Apple. Seems a poor assumption to be making
Why Amazon Really Bought Twitch
I really enjoyed Psycho-Pass and Shinsekai Yori. It's probably one of my favorite shows of all time so far, worth checking out for sure.
Okay! I'll keep the search thing in mind!

Thanks for the info I'll read the articles now.
Do you also use linux?
> In what case would it be that disastrous to reboot a database server?

To assure data integrity, an interactive database system has to log off all its users and shut down open databases before rebooting. If the reboot can't be orchestrated that way, if users can't be logged off in an orderly way, there will be data loss.
For Los Angeles, UberX, Lyft, and others have the potential to solve the "last mile" issue of public transit. Especially with newer carpool features like UberPool and Lyft Line.

LA is currently investing a lot into building more light rail infrastructure. However, regardless of how much LA invests in rail, for most commuters the rail will only get them most of the way to their workplace. Before UberX and Lyft, the only options for the last leg of the trip were bicycle (which has a lot of limits), bus (too unreliable), and taxi (too expensive).

UberX and Lyft provide an option that didn't exist before. And it's cheap and reliable enough to a be a very good option. As LA continues to build more rail, I think it has the potential to greatly change commuting in the future. Maybe it will become common for young single people to not own a car and rely on Uber/Lyft combined with rail. And then when they get married and have kids, then buying one car makes sense. The result would also greatly reduce traffic and air pollution.
Bookless library opened by new U.S. university
Exactly, this isn't a racial thing. This is [economic] class segregation, and the racial element is simply one of the more visible symptoms. The root of the problem is that public education is funded at the local level, causing the vicious cycle:

1. Schools in wealthy communities get more funding than schools in poor communities.

2. More money translates into better teachers, better facilities, more AP classes, better test scores, and measurably better education.

3. Better education translates into better future economic prospects for students.

4. Those better-off students can later afford to live in wealthy communities, start over at step 1.

Break the chain at step one. The quality of education available to you should not depend on how expensive a neighborhood your parents can afford to live in. Implementation details? Not sure--maybe fund schools at the state or national level, dividing the pie based on population (constant $/student)?
I use Postgres with Laravel so i'm not writing any SQL queries directly, can you go into more detail about why this won't work for me?
This is great work! Most comments here are always going to go negative on the data he collects. "This is not true! I own a 1981 VW diesel with 220,000 miles on it and the only thing I've had to fix...."

Avoiding those ratholes for a moment I want to look at the other side. The Uber economics. Uber's pricing is based on the assumption that you're not using Uber as your full time car replacement. Put another way, I'm waiting for the Uber monthly subscription that gives me up to X miles per month for Y cost. If I commit to that many miles I'm pretty sure that can drive down the cost per mile in a meaningful way....say 20 - 30% vs the current "pay as you go on demand model"

Lastly I think the first logical place to look is the 2 car family. You can shelve one and still have your own car for long family vacation trips or other immediate requirements while using Uber for that person that's got a pretty predictable 5 day a week commute etc.
How do you handle backups of that much data? I'm struggling to backup my ~5TB pool.
Oh, I'm sure they'll begin it. We'll get a shiny new sixty-billion dollar rail line from Bakersfield to Fresno, and probably two or three trains a day along it.
Crossing Language Barriers with Julia, Scipy, and IPython
Great points! I actually fear that investment in light rail is going to look misplaced in just 10 years when automated electric cars operated by private companies like Uber and Lyft and whomever are going to scoot multiple people between two common points.
"Also, not being late if you have an engine issue or get a flat tire."

How does uber prevent that? I suppose with a fleet of cars, another could pick you up, but you're still going to be late (just not as late)

(edited to add, and on the frontend, I can guarantee that about 45 seconds after leaving the door at work, I'll be starting my car and moving out of the lot, how does uber guarantee that a car will be ready to leave for work within say 15 minutes, so I'd have to burn much more total commute time to make sure theres a realistic chance I won't be late. TLDR is the std deviation of a rental is going to be very large compared to an owned car.)
That does not have automatic failover. I really want to use Postgres at work but every time I start reading about failover, load balancing, sharding and so on it seems like such a mess with PG.

I just want sharding with automatic failover to separate datacenter in a simple package...