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what linear algebra do you use most often for practical problems? | omarish: You can save a ton of time by formulating a linear algebra problem as a shortest path problem; you can end up using dijkstra's algorithm to enumerate the possible solutions.http://en.wikipedia.org/wiki/Knapsack_problem |
what linear algebra do you use most often for practical problems? | biotech: I probably use multi-linear regression most often, but occasionally I'll encounter a Linear Programming problem.I'm currently looking for a good Partial Least Squares algorithm in C/C++. Any suggestions? I know R has a popular PLS algorithm, but I was hoping to avoid the learning curve. |
what linear algebra do you use most often for practical problems? | jey: I'm using SVD in building a porn recommendation engine. (Very NSFW, and the recommendation engine itself isn't live yet: http://fapseek.com) |
Review my webapp: hapylink.com | daveambrose: First, I'm a big fan of your flagship product. I use it on my site and told most of the Upper East Side about the joy Cornify has brought into my life.Second, can I get some account information - say, analytics when I create an account with happylink?If I'm going to be spreading happiness, I want to measur... |
Review my webapp: hapylink.com | gonick_daysbury: Pretty cool but your target audience - current or former drug users - is going to be a difficult one to monetize. |
Review my webapp: hapylink.com | MicahWedemeyer: Hilarious. I love it. |
Review my webapp: hapylink.com | sobriquet: Minor tweak:
When clicking the input box, I'd like the ghost text, 'http://', to be removed. Since I've already copied the URL I want to make happy, when I paste it I produce: http://http://urltomakehappy.com, It'd be nice to not have to manually remove that first http:// |
Review my webapp: hapylink.com | okeumeni: I’m always amazed by people who spend time doing this kind of application. I wish I had that spare time. |
Review my webapp: hapylink.com | keltecp11: Cornify is kinda fun... what is the point of Happylink? |
Review my webapp: hapylink.com | apsec112: It's a nice idea, but please remove the background image, it makes my eyes bleed. Your main website at http://www.cornify.com/ has a much better design. |
Review my webapp: hapylink.com | petercooper: There's a meta keywords entry but no content. They're not that important nowadays, but you might as well fill it in.You could do with a bookmarklet to make generating links easier.Perhaps you could add a feature to allow URLs to be prefixed by http://hapylink.com/ to then change them into the final link. F... |
Review my webapp: hapylink.com | jlees: I like it, a nice example of how you can run with an idea and get something cool out the other end quickly using today's frameworks etc.But where are the kittens? |
Review my webapp: hapylink.com | jbenz: Awesome. On Cornify, if you click the button five times, every piece of text gets a very happy modifier. I derive much pleasure from this.Will Hapylink ever add the same functionality? Because it would probably end war and hunger. |
Advice on my application (iCue) | csomar: i have a similar experience, i'm running a free Barcode Creator software, it's the best free ever in the market.I used adsense with it and it made $670 or so the last year, not so much but i think better than what donations can make. (I have few traffic 200 unique a day)Charging for it can be good, the applicat... |
Advice on my application (iCue) | yan: I haven't accomplished anything similar, but I have a few ideas. You can always just charge people for it, but I'm not sure if this is substantial enough for people to pay money for. However, I would love to be wrong.Another avenue is to create a service that compiles these CUE sheets for sets that don't come pack... |
Review my webapp: hapylink.com | anuraggoel: Finally, a layer of indirection even joshu can feel happy about. |
Advice on my application (iCue) | smoody: that's a clever idea. nicely done!have you considered enabling click-to-buy for the MP3s and collecting affiliate fees? i could see many impulse buys happening that way. |
Review my webapp: hapylink.com | ComputerGuru: Another link "shortener" service? Don't we have enough of those in all their different shapes and colors?No thanks. |
.net vs .com | falsestprophet: Short answer: yes, .net addresses will not be taken as seriously or remembered as easily.Long answer:But if tell us about your business and tell us your .net name, we can help you find alternatives.If you don't the domain indexed by Google you can protect it with http://mailhide.recaptcha.net/ and share... |
.net vs .com | physcab: Who cares about the name. Just make sure the product is good. |
.net vs .com | aaronsw: I purchased watchdog.net, which I thought was a great name, but almost no one ever remembers it correctly. |
.net vs .com | fiaz: It really doesn't matter. |
.net vs .com | zaius: Regarding the guy holding the .com - Just because there's no website there doesn't mean it isn't being used. Think email. |
.net vs .com | axod: Choose a different name. There are still tons available. Let the domain whores hold on to their "Premium four letter .com!!" names.Just look harder and you'll find the gem.(I spent about a day and found mibbit.(com|net|org) and I'm still pleased enough with the name). |
.net vs .com | sachinag: The problem is that if you're successful with the .net, the .com will magically become more expensive. Given that you think it's an awesome term, it may be a generic word for which you'd have no recourse to obtain.That said, upcoming did OK with .org and SlideShare did ok with .net for a while. I'd recommen... |
.net vs .com | vaksel: i'd get a .com first and foremost, can you do what facebook did and run as the[greatsitename].com? |
.net vs .com | pg: Am I going to regret pushing forward with the .net address, or should I try to think of some different names that end in .com?Yes. Since 1996 it has always seemed that all the good names were taken, and yet it has always been possible to find ones that weren't. All your name has to be is acceptable. Google.com i... |
.net vs .com | russell: First register the .net name while you are thinking. It's only $7 or so..com is better than .net because .net is below the radar for most people. Have you thought of .org It doesnt mean nonprofit. It was set up for everyone else not in the military/industrial complex. Most people are aware of .org.The go... |
what linear algebra do you use most often for practical problems? | keefe: It's not a very interesting answer, but technically linear algebra : transformation matrices for rotating and scaling graphics... |
.net vs .com | nolanbrown23: There are some good sources out there to try and find a domain name. http://www.domainpigeon.com/ is a good if you're looking for a random name.To answer you're question, you should absolutely get a .com. In my experience, the .net name eventually becomes a pain in the butt for branding and user acquisiti... |
.net vs .com | nanexcool: Just remember, since you mention del.icio.us, that it redirects to delicious.com. |
.net vs .com | csomar: choose a different name and go .com.
think and think again and you'll find a great name.Never go for a .net or .info. When people remember, they remember only the name and put .com in the end. |
what linear algebra do you use most often for practical problems? | frankus: I've poked around the CGAffineTransform classes that Apple uses in their Core Animation framework a bit, but unless you're doing something out of the ordinary, you don't really need to know what's going on under the hood. |
.net vs .com | tlrobinson: I always end up typing slideshare.com instead of slideshare.net (the real one) even though I know it's .netSo, go for a .com |
what linear algebra do you use most often for practical problems? | njoubert: Generating Jacobians for Implicit Euler Integration in a numerical simulation project. SVD for rigid body center-of-mass calculations. Conjugate Gradient for solving Ax=b on 9000x9000 matrices. |
.net vs .com | matt1: As someone who has looked through of thousands of domain names I can tell you that there are still plenty of decent names left. The trick, as I'm sure you've figured out by now, is finding them. If you took the approach I originally took, you've probably spent a few hours on AjaxWhois trying to find something th... |
Ph.D. vs Startup skillset | russell: A PhD is a great backup if you eventually want to go back into the mainstream. I find it fascinating that hugely successful companies were founded by dropouts: Microsoft, Apple (I think), and GoogleCaustic Graphics was founded by my son, a Berkeley dropout and two of his buddies, one of whom never went to co... |
Review my web app (steamgamedeal.appspot.com) | gamedeal: For those unfamiliar, Steam has a growing number of game packages, each containing a number of games, at reduced total cost. If you want to buy a certain set of games, this app helps you find the cheapest way of buying packages that contain all of the games you wanted. |
Ph.D. vs Startup skillset | jfarmer: There are a few ways a PhD can help:1. If your PhD research is directly applicable to a product you think is worth building. See, e.g., Google.2. If you need to hire other PhDs or people with advanced degrees. Having a PhD gives you street cred which helps you build a team.Beyond that starting a company is a... |
Review my web app (steamgamedeal.appspot.com) | abyssknight: Very cool concept! Are you screen scraping for data or is there an API of some sort? |
Review my web app (steamgamedeal.appspot.com) | mncaudill: Cool concept. The animations are well done and not too over the top.Couple of suggestions for you:
1) I don't think the ability to switch style themes is important at all. It really doesn't have anything to do with the core of what you are trying to accomplish and for that reason alone, I'd vote scrapping it... |
Review my web app (steamgamedeal.appspot.com) | jerryji: Even though it might not be considered production yet, I'd recommend any public site to at least turn off debug setting (and better add a catch-all route). |
Ph.D. vs Startup skillset | pg: Finishing what you start. Enduring pain. Technical ability. |
Ph.D. vs Startup skillset | scott_s: I think being a professor trying to get tenure is more similar to founding a startup than getting the Ph.D. itself.Professors trying to get tenure have to produce good research which results in a high quantity of high quality publications, attract and advise graduate students and chase grant money. In the begi... |
.net vs .com | kineticac: Everything else people have said is good! One other note, if you look on the iphone keyboard while you're typing in a URL on safari, there's a ".com" key to finish off the URL. Just a thought. One day we'll have keyboards with a .com attached to it right next to the return/enter key. |
.net vs .com | riobard: A side question:Do you need to get .net/.org/.[other TLDs] when you have the .com one?e.g. google.net redirects to google.com, but google.org is for a different purpose. |
Ph.D. vs Startup skillset | apu: As someone doing both (well, not sure about the 'successful' part yet =)), I definitely see a lot of parallels in PhD work and startup work, and a correspondingly large amount of overlap between the skills needed to be successful at either.First there are the 'obvious' primary benefits of doing the PhD: technical ... |
Review my web app (steamgamedeal.appspot.com) | patio11: Please pre-populate with suggested sample searches and include a list of your top 5 recommendations. (I would snatch one in a heartbeat but I'm very intensely lazy.) |
Linux Development - Rapid Prototyping on the iPhone | yan: 1) I use XCode mostly and find it quite able. Recently, I got MacVim to be XCode's text editor (double click on a file or on a build error -> opens in MacVim) and it's very tolerable. I think MacVim is by far the best implementation of Vim on OS X yet. You can use 'xcodebuild' from the shell and live in vim/emacs ... |
.net vs .com | icey: This is why Hacker News is so awesome - due to the amazing input from everyone and a tremendously good suggestion from Blogimus, I've got a .com now that is pretty great (and I'm definitely excited about).Thank you all so much! |
Linux Development - Rapid Prototyping on the iPhone | frankus: Take a look at the nu programming language:http://programming.nu/It's an s-expression language built on top of the Objective-C runtime. I'm not enough of an FP guru to tell you if it's a suitable stand-in for Scheme, but it's written and working on the iPhone.From the looks of it you can use any editor you wan... |
Linux Development - Rapid Prototyping on the iPhone | frankus: BTW, a lot of your emacs key bindings will work on a Mac (at least in Cocoa apps), and you can add more. Here's an in-depth explanations:http://www.hcs.harvard.edu/~jrus/Site/Cocoa%20Text%20System....But things like Control -Previous, -Next, -Back, -Forward, (forward) -Delete, -A (beginning of line), -End of l... |
Linux Development - Rapid Prototyping on the iPhone | asimjalis: I have been using MacVim and the Unix prompt for my dev environment, and it's working well so far. XCode is useful for running code in the simulator, and for the core library documentation. Here is a simple app I made using this set up http://pair.com/asim/itimeit |
Ph.D. vs Startup skillset | jlees: The self-motivation you need to focus on one thing, working in near-isolation for months at a time, is certainly handy. Though I've found the startup side of things to be very unlike the single-target focus of a PhD; there's just too much going on in many different areas. (I prefer it like that.)Learning to live... |
Ph.D. vs Startup skillset | fgimenez: How'd the brutesoft presentation go? |
Linux Development - Rapid Prototyping on the iPhone | haxorize: Take a look at Rhodes.http://www.rhomobile.com/Here's the pitch:
"Rhodes is the industry's first open source framework for rapidly building mobile applications for all major smartphone operating systems. Rhodes allows developers to write a smartphone application once using simple HTML and it automatically bui... |
Review new MightyBrand project, micro-monitoring your brand via Twitter | ctingom: Can you expand on what you monitor? If it's just blogs, twitter, digg and news, why wouldn't I just subscribe to a few RSS feeds in my feed reader? |
Review new MightyBrand project, micro-monitoring your brand via Twitter | vyrotek: Tracking brands/keywords is something people need. But, is Twitter the right tool? How is this different than Google Alerts? |
Where would you rather start a company Boulder or Boston? | rms: Boston has the better startup/investment community but there is something more appealing to me about the aesthetic and the skiing in Boulder. |
Ph.D. vs Startup skillset | skmurphy: Many technical PhD's tend to want to "win the argument" instead of closing the sale. If you want to start a company do it now and skip the PhD. |
Review new MightyBrand project, micro-monitoring your brand via Twitter | huhtenberg: That's not a bad idea, but I think you approaching it from the wrong end.Specifically, the twitter-less monitoring interface (e.g. a daily email) would make lot more sense. At least to someone who is not a Twitter user, but would like to track what's being said there about the product/company/etc. |
Ph.D. vs Startup skillset | 10ren: I think there are strong parallels between PhD research and invention (though most startups these days don't have that basis). A patent requires researching prior art (literature) and describing your idea formally (papers/thesis). A PhD must be original and substantial (novel and non-obvious). In both cases, you... |
Review my webapp: hapylink.com | jollyjerry: MORE HAPPINESS NEEDED :) |
Linux Development - Rapid Prototyping on the iPhone | hboon: 1) Just do it. Check it out, use Objective C + Xcode + IB and get familiar with the frameworks first. You can launch Emacs as an external code editor working with Xcode.2) Write part of the app as a web service. |
Where would you rather start a company Boulder or Boston? | smoody: Boston has an overabundance of great schools pumping out well-educated CS majors vs a single college in Boulder, and, I believe that if you're started a web company, there's probably a bigger pool of talent in the Boston area to choose from if you want to grow big fast (but that's just a guess).But, if you're p... |
Review new MightyBrand project, micro-monitoring your brand via Twitter | catone: More easily tracking your brand (or your competitors) = helpful.Doing it through Twitter DMs = not so much, imho.Twitter just has way too much noise, so it's not a great interface for receiving alerts about important information. I'd rather get alerts via RSS or some sort of custom dashboard. Better yet -- of... |
Review new MightyBrand project, micro-monitoring your brand via Twitter | csomar: i don't prefer to send me a DM. I already have a lot of SPAM on it and I don't read it no more.So why not create a site, where i can log and find my alerts?This option is already available with Google Alert (have you tried it). It sends me daily reports of keywords mentioned on the web. |
Can I see your vesting agreement? | brk: Pay the money.Not only will it be done right (hopefully), but it's good to build a relationship with a lawyer/accountant early on.If you're personable, you can usually call up once or twice for a quick bit of advice/answers at no charge, and when you need it, that will be worth the $350 fee easily. |
best cheap easy setup for initial development | csomar: I didn't understand what are you looking for, but I think you want to start a project on a given platform.For that I recommand, Visual Studio.1- It's 100% free of cost (express edition), you get the editor (Visual Studio Express) for free and .net frame work is free to install and compatible on Windows versions... |
Good architecture for web single sign-on? | csomar: Why don't you try the Open-ID login, users can log with their Google account.If your user account isn't much used (the site is a blog site), you can do a simple FaceBook Connect or Google Friend Connect. |
Good architecture for web single sign-on? | pclark: Facebook Connect |
best cheap easy setup for initial development | mechanical_fish: Ubuntu Linux. You can use aptitude or apt-get to install pretty much whatever you want, it will run on whatever hardware you have at the moment, and it's free of charge.If you already have a Mac you could decide to stick with the Mac OS for development instead (I use it; it works fine), though you will... |
best cheap easy setup for initial development | jackowayed: OK, you're pretty ambiguous on what you want, but based on "easy to move to a collocation center" and "GUI isn't required" it sounds like you're mostly asking about servers.For initial development, you probably don't even need a server. There's pretty much always an easy way to have a local server run on yo... |
best cheap easy setup for initial development | jojoleflaire: One thing that took us a while to figure out, but helped immeasurably once we did was getting good, at VM/image based development.So in our case we wrote the code on whatever laptop we liked best (I did most of the coding for first few versions our software on a 12" PowerBook, other folks used ThinkPads o... |
best cheap easy setup for initial development | c00p3r: Strategy: Linux under Xen. (just copy disk image or dump/restore FS) Amazon EC2 for production.Tactics: Fedora (It will become CentOS after polishing) everything already packaged - Django, Ruby, nginx, apache with tens of modules, etc.Hint: Forget Java. |
best cheap easy setup for initial development | patrickg-zill: VirtualBox (free from virtualbox.org) running on top of whatever Windows, Mac-x86 or Linux system you have.Debian or Centos as the operating system that you run as a VM inside VirtualBox.You should be able to easily install Python, Ruby, TCL, Lisp, etc. on either platform for development language; Apache... |
Good architecture for web single sign-on? | enki: oauth |
Any users of SimpleCDN? | jadamoano: using new stormfrot service for two weeks now for our linux iso distro... fast dl speeds and great price so far so good. no frills, but get the job done well and much cheaper than my dedicat box at liquidweb |
Can I see your vesting agreement? | dmillar: Yes, pay the money.This is probably not what you want to hear, but I would consider consulting a business attorney to get these docs drawn up.I'm reminded of this: http://particletree.com/notebook/a-tale-of-two-legal-paths/ |
Good architecture for web single sign-on? | sho: Check out http://code.google.com/p/rubycas-server/ sudo gem install rubycas-server |
Good architecture for web single sign-on? | bdr: Have you looked at SAML? It may be too complicated for your use case, but the basic technique could be useful. http://en.wikipedia.org/wiki/SAML |
Good architecture for web single sign-on? | RobbieStats: Thanks for the suggestions, but it sounds like there still aren't good (simple) solutions for web single sign-on (where you don't have to log in to multiple sites separately). |
Best resources for small IPhone Web App? | cyunker: Stanford iPhone class:http://www.stanford.edu/class/cs193p/cgi-bin/index.phpUI library for websites to mimic the iPhone UI:http://code.google.com/p/iui/ |
Best resources for small IPhone Web App? | seren6ipity: Check these 31 sample examples. http://www.appsamuck.com/day1.html |
Best resources for small IPhone Web App? | auston: http://phonegap.pbwiki.com/Go down to tips and tricks |
Best resources for small IPhone Web App? | Zev: Apple's dev docs. See http://developer.apple.com/safari/ for the Safari dev center. It covers everything WebKit supports and how to interact with it. |
Best resources for small IPhone Web App? | hbien: For a standard/easy to implement UI, check out iUI: http://code.google.com/p/iui/ |
Best resources for small IPhone Web App? | sergeo: I would recommend iUI, which is based on the code originally developed by Joe Hewitt - the creator of Firebug.I have developed a pretty advanced iPhone webapp with it (online food diary searching while you type). The only thing was that I had to disable page transitioning emulating sliding screens, as the anima... |
Ph.D. vs Startup skillset | friendstock: go to stanford.. meet a lot of people. |
Yet another internship query | vaksel: Why don't you do your startup now? You do realize that doing a startup does not result into instant success. So why not launch it now, so you have a few years to grow it to profitability. |
Best resources for small IPhone Web App? | SwellJoe: We used iUI for our iPhone (and Android) versions, and it worked very well, and was really easy to apply to an existing web application (an old-fashioned non-AJAXy one at that). |
Advice on my application (iCue) | hbien: Have you thought about contacting one of those "premier ad networks"? This would seem perfect for your app, where once in a while an advertisement is growled with a click hook to go to a URL. Twitterific does this too with The Deck. Check out:http://decknetwork.net/
http://fusionads.net/ |
Worst working conditions you have written code in? | nreece: Had to write code in Sanskrit on a banana leaf in an isolated island... but then, it was just a dream.. that may come true someday. |
Worst working conditions you have written code in? | trapper: Not working conditions per se, but debugging a legacy bioinformatics program written in perl. Comments were in french which I do not understand. It took three days to run and exited with:"Error - good luck finding the bug". |
Worst working conditions you have written code in? | dbrown26: Back in 2000 I was working at a startup in Washington, D.C. and we had been working 80-100 weeks for nearly 1.5 months before management finally brought in some contractors as reinforcement. All of the developers were in a 20x20 or so room working at folding tables. One of the contractors that they brought ... |
Worst working conditions you have written code in? | banned_man: Trading desk, as a research quant. The office was open-plan, there were constantly people passing behind me, and expletive-laden interruptions related to market conditions were frequent.For the first 6 months, it was very exciting, but eventually the sensory overload and taxing environment got to me, and I ... |
Worst working conditions you have written code in? | zackola: Pales in comparison to your story but I worked in a basement office, with awful fluorescents, no natural light, with 95.5FM a top 50 hits station blaring through the overhead system, in a open space for a man who was a pretty dead on 50/50 mix of Michael Scott from The Office and Buster from Arrested Developme... |
Worst working conditions you have written code in? | tjake: Wrote custom test-set software in a clean-room. Bunny suit, mask and rubber gloves for 8 hours a day. It was a windows box connected to a x-ray diffraction machine so I had to be in the room. |
Worst working conditions you have written code in? | Jakob: I worked at home in my living room for the last year. Rented an office again this year. In retrospect working in your living room was very unhealthy for me. |
Worst working conditions you have written code in? | epi0Bauqu: While dealing with a crying baby. |
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