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  • Installation of Tex Live via the terminal 12.04

    - by user74713
    I need to install upstream version of TeX Live for 12.04 to edit the manual for Ubuntu. I am having a difficult time installing it per the directions @ http://ubuntu-manual.org/getinvolved/editors#install-texlive. TeX Live documents are on my computer, but I am not able to run the install. No TeX Live program found on my computer. Any help is greatly appreciated! ~Thanx!~ Hello, my name is Chris. I am a student pursuing a career in technical writing. I would like to assist the Ubuntu community while gaining experience & building my resume. Below I have listed the prior attempts & links to view the posts of each attempt: Backports I have tried using the official backports of the latest (2012) TeX-Live via their PPA. Please refer to link below for the particulars. How do I install the latest 2012 TeX Live on 12.04? Latex I've also tried running Latex as suggested. Please refer to link below for the particulars. http://ubuntuforums.org/showthread.php?t=2019051 PPA Causing Issue?? or something else I came across a post concerning the ability to install programs via the terminal and am wondering if it may be my problem??? Please refer to link below for the particulars. PPA - TeX Live Cannot install anything through Terminal - apt-get -f install

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  • The standards that fail us and the intellectual bubble

    - by Jeff
    There has been a great deal of noise in the techie community about standards, and a sudden and unexplainable hate for Flash. This noise isn't coming from consumers... the countless soccer moms, teens and your weird uncle Bob, it's coming from the people who build (or at least claim to build) the stuff those consumers consume. If you could survey the position of consumers on the topic, they'd likely tell you that they just want stuff on the Web to work.The noise goes something like this: Web standards are the correct and right thing to use across the Intertubes, and anything not a part of those standards (Flash) is bad. Furthermore, the more recent noise is centered around the idea that HTML 5, along with Javascript, is the right thing to use. The arguments against Flash are, well, the truth is I haven't seen a good argument. I see anecdotal nonsense about high CPU usage and things I'd never think to check when I'm watching Piano Cat on YouTube, but these aren't arguments to me. Sure, I've seen it crash a browser a few times, but it's totally rare.But let's go back to standards. Yes, standards have played an important role in establishing the ubiquity of the Web. The protocols themselves, TCP/IP and HTTP, have been critical. HTML, which has served us well for a very long time, established an incredible foundation. Javascript did an OK job, and thanks to clever programmers writing great frameworks like JQuery, is becoming more and more useful. CSS is awful (there, I said it, I feel SO much better), and I'll never understand why it's so disconnected and different from anything else. It doesn't help that it's so widely misinterpreted by different browsers. Still, there's no question that standards are a good thing, and they've been good for the Web, consumers and publishers alike.HTML 4 has been with us for more than a decade. In Web years, that might as well be 80. HTML 5, contrary to popular belief, is not a standard, and likely won't be for many years to come. In fact, the Web hasn't really evolved at all in terms of its standards. The tools that generate the standard markup and script have, but at the end of the day, we're still living with standards that are more than ten years old. The "official" standards process has failed us.The Web evolved anyway, and did not wait for standards bodies to decide what to do next. It evolved in part because Macromedia, then Adobe, kept evolving Flash. In the earlier days, it mostly just did obnoxious splash pages, but then it started doing animation, and then rich apps as they added form input. Eventually it found its killer app: video. Now more than 95% of browsers have Flash installed. Consumers are better for it.But I'll do it one better... I'll go out on a limb and say that Flash is a standard. If it's that pervasive, I don't care what you tell me, it's a standard. Just because a company owns it doesn't mean that it's evil or not a standard. And hey, it pains me to say that as a developer, because I think the dev tools are the suck (more on that in a minute). But again, consumers don't care. They don't even pay for Flash. The bottom line is that if I put something Flash based on the Internet, it's likely that my audience will see it.And what about the speed of standards owned by a company? Look no further than Silverlight. Silverlight 2 (which I consider the "real" start to the story) came out about a year and a half ago. Now version 4 is out, and it has come a very long way in its capabilities. If you believe Riastats.com, more than half of browsers have it now. It didn't have to wait for standards bodies and nerds drafting documents, it's out today. At this rate, Silverlight will be on version 6 or 7 by the time HTML 5 is a ratified standard.Back to the noise, one of the things that has continually disappointed me about this profession is the number of people who get stuck in an intellectual bubble, color it with dogmatic principles, and completely ignore the actual marketplace where this stuff all has to live. We aren't machines; Binary thinking that forces us to choose between "open standards" and "proprietary lock-in" (the most loaded b.s. FUD term evar) isn't smart at all. The truth is that the <object> tag has allowed us to build incredible stuff on top of the old standards, and consumers have benefitted greatly. Consumer desire, capitalism, and yes, standards ratified by nerds who think about this stuff for years have all played a role in the broad adoption of the Interwebs.We could all do without the noise. At the end of the day, I'm going to build stuff for the Web that's good for my users, and I'm not going to base my decisions on a techie bubble religion. Imagine what the brilliant minds behind the noise could do for the Web if they joined me in that pursuit.

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  • Buzzword for "performance-aware" software development

    - by errantlinguist
    There seems to be an overabundance of buzzwords for software development styles and methodologies: Agile development, extreme programming, test-driven development, etc... well, is there any sort of buzzword for "performance-aware" development? By "performance awareness", I don't necessarily mean low-latency or low-level programming, although the former would logically fall under the blanket term I'm looking for. I mean development in which resources are recognised to be finite and so there is a general emphasis on low computational complexity, good resource management, etc. If I was to be snarky, I would say "good programming", but that doesn't seem to get the message across so well...

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  • Resources for 2D rendering using OpenGL?

    - by nightcracker
    I noticed that there is quite some difference between 3D and 2D rendering using OpenGL, the techniques are different - pixel-perfect placing is a lot more desirable, among other things. Are there any good (complete) references on using OpenGL for rendering 2D graphics? There are quite a few "tutorials" around on the net that help you open a window, set up a half-decent environment and draw a sprite, but no real good information on rotation, blending, lightning, drawing order, using the z-buffer, particles, "complex" primitives (circles, stars, cross symbols), ensuring pixel-perfect rendering, instancing and many other staple 2D effects/techniques. Any books, great blogs, anything? Any particular awesome libraries to read?

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  • TypeScript first impressions

    - by Bertrand Le Roy
    Anders published a video of his new project today, which aims at creating a superset of JavaScript, that compiles down to regular current JavaScript. Anders is a tremendously clever guy, and it always shows in his work. There is much to like in the enterprise (good code completion, refactoring and adoption of the module pattern instead of namespaces to name three), but a few things made me rise an eyebrow. First, there is no mention of CoffeeScript or Dart, but he does talk briefly about Script# and GWT. This is probably because the target audience seems to be the same as the audience for the latter two, i.e. developers who are more comfortable with statically-typed languages such as C# and Java than dynamic languages such as JavaScript. I don’t think he’s aiming at JavaScript developers. Classes and interfaces, although well executed, are not especially appealing. Second, as any code generation tool (and this is true of CoffeeScript as well), you’d better like the generated code. I didn’t, unfortunately. The code that I saw is not the code I would have written. What’s more, I didn’t always find the TypeScript code especially more expressive than what it gets compiled to. I also have a few questions. Is it possible to duck-type interfaces? For example, if I have an IPoint2D interface with x and y coordinates, can I pass any object that has x and y into a function that expects IPoint2D or do I need to necessarily create a class that implements that interface, and new up an instance that explicitly declares its contract? The appeal of dynamic languages is the ability to make objects as you go. This needs to be kept intact. More technical: why are generated variables and functions prefixed with _ rather than the $ that the EcmaScript spec recommends for machine-generated variables? In conclusion, while this is a good contribution to the set of ideas around JavaScript evolution, I don’t expect a lot of adoption outside of the devoted Microsoft developers, but maybe some influence on the language itself. But I’m often wrong. I would certainly not use it because I disagree with the central motivation for doing this: Anders explicitly says he built this because “writing application-scale JavaScript is hard”. I would restate that “writing application-scale JavaScript is hard for people who are used to statically-typed languages”. The community has built a set of good practices over the last few years that do scale quite well, and many people are successfully developing and maintaining impressive applications directly in JavaScript. You can play with TypeScript here: http://www.typescriptlang.org

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  • How can I make video games if I don't like programming?

    - by hoper
    I am studying C++ code in my school (my major is computer programming). Honestly, my grades are not so good, and assignments are really hard. Sometimes I feel sad that I will spend 8-10 hours per day coding (which is stressful) in the future for my job. But I still want to make video games. Maybe this is the only reason why I am taking all of these stressful courses. I always write down plots, stories, characters, fictional gaming worlds... Once, I thought I should study artistic technology such as game design and not computer technology such as C++, C#, etc. However, most of popular game designers (or directors) such as Kojima, Miyamoto, etc. used to be good programmers. Companies actaully assign programmers to directors because they understand how to make a game. I've try to find other colleges or universities where they teach game design programs. However, one article that lists rank 10 game design schools in North America seems untrustful because the survey company only scores it from intervews of students. Once, I tried to attend Art Institute of Vancouver which is rank 7 according to that article. However, one programmer who used to be an instructor in there told me the truth: the employement rate of graduated students is low. How can I have a future making games if I don't like programming?

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  • How to run a command as administrator on Windows7 from a command line?

    - by Radek
    I need to run tscon.exe 0 /dest:console remotely = not manually on Windows7 as an administrator. More info here How to use tscon on Windows7? I did my research and OPTION 1 - runas for user root (no password) on computer yogurt works C:\>runas /user:yogurt\root cmd Enter the password for yogurt\root: Attempting to start cmd as user "yogurt\root" ... for user administrator (I thought the the password is blank too) on computer yogurt doesn't work. I am asked for password, hit the enter and C:\>runas /user:yogurt\administrator cmd Enter the password for yogurt\administrator: Attempting to start cmd as user "yogurt\administrator" ... RUNAS ERROR: Unable to run - cmd 1327: Logon failure: user account restriction. Possible reasons are blank passwo rds not allowed, logon hour restrictions, or a policy restriction has been enforced. OPTION 2 - setting properties of a batch file so it always runs as administrator. The 'privilege level' section is greyed out for me under Compatibility level. So I am not able to tick the check box Run this program as an administrator

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  • Flash player, HD videos and games are choppy

    - by Aimad Majdou
    I have a problem with flash player. HD videos from Youtube or Vimeo and flash games do not play smoothly. I'm using Flash player 11, Windows 7 Sp1, and my graphic card is Intel GMA 4500. Device Manager shows me that all drivers are installed on my computer, so i don't have any problems with drivers. When I run Google chrome, Resource Monitor shows me 15% ~ 40 % of CPU Usage and 40% used Physical Memory, but when I watch a video on Youtube or play a Flash game, the Resource Monitor shows 70% - 90% CPU Usage. Also, when I run some HD Video (Frame width : 1920, Frame height : 1080) on my computer, Device Manager shows me 80% ~ 100% of CPU Usage. before I Reinstall Windows 7, HD Videos and flash games were play smoothly I hadn't any problem with them !! I hope all these informations are enough to answer my question.

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  • Looking for a software solution which acts like a hardware KVM

    - by Daisetsu
    I've seen programs like Synergy before which allow a keyboard and mouse to be used across multiple systems. Unfortunately Synergy treats both systems like they are the same thing (when you move the mouse too far to the right it jumps to the other computer, along with keyboard input). I only have 1 monitor so what I need to do here is have a quick way to view my other desktop that is easy to manage. Remote desktop is difficult because you have to take it out of fullscreen, then minimize it and then re-maximize it when you want to use it again. If there were a single button I could hit to switch to the other computer that would be optimal. Both computers are on the same lan.

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  • Understanding Backtracking in C++

    - by nikhil
    I have a good basic understanding of the fundamentals of C++, I also have an understanding of how recursion works too. I came across certain problems like the classic eight queens problem and solving a Sudoku with Backtracking. I realize that I'm quite lost when it comes to this, I can't seem to be able to get my mind around the concept of going back in the recursion stack and starting again in order to solve the problem. It seems easy with a pen and paper but when it comes to writing code for this, I'm confused on how to begin attacking these problems. It would be helpful if there were a tutorial aimed at beginners to backtracking or if there were a good book where this was covered. If somebody can shed light on this topic or give me some links to decent references, I'd be really grateful. And yes I do know that it would be easier in functional languages but I'd like to understand the implementation in imperative languages too.

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  • Programming 101 [closed]

    - by Ashish SIngh
    i just got placed after completing my b.tech as an assistant programmer i am curious to know about some things.... i am not at all a very good programmer(in java) as i just started but whenever i see some complicated coding i feel like how man... how they think so much i mean flow and all... what should i do? should i just go with the flow or what?? java is very vast so nobody can memorize everything then how they find so many specific functions to use... should i try to memorize all the syntax stuff or just use google to things and with time it ll be all handy.... what should be my strategy to enhance my skills PS: i love java (crazy about it...) and one more thing, in my company i m not under much pressure so it is good or bad for me???? please guide me. i know you all can help me with your experience :) thank you.

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  • make my Ubuntu 12.04 laptop visible on the network

    - by Andrew Boyd
    I'm ecstatically happy with my 12.04 on my laptop after loading it over my MS Vista... but there's just one thing, one little fly in the ointment.... While I can view our 2 Terabyte, shared hard-drive in the lounge (and copy files back and forth) I can't see my PC (when I boot up in Ubuntu 12.04) nor the Lubuntu computer connected to the TV (for movies, Youtube etc). Printing to the HP office jet on the PC doesnt work over the network either. Have had one dubious flirtation with Samba, which seems to be the only thing I've found that will 'work', however halfway through that "installation" everything just ground to a halt, the directions began to stop making sense... I was working from this page. Our Network consists of the following: Our Internet service is wirelessly sent to us from our provider to our dish on a pole. It comes into the house via an ethernet cable. We split it there to a phone, and to 6 other destinations (bedrooms, computers, and to another splitter in the lounge which has a wifi antennae and 4 ethernet ports). one port goes to the Lubuntu OS PC which is connected to the TV the second port goes to the 2 Terabyte harddrive (MS powered 'Mybooklive') (the other two are empty) My Ubuntu 12.04 laptop connects wirelessly to this splitter in the lounge. I know just enough about computers to get myself into an awful mess without too much trouble We usually can view friends' laptops when they get on our network (as they are invariably MS OS's) Our flatmate, who introduced us to Linux's computer is also invisible How can we make our Linux OS based computers visible on the network and share files and printing?

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  • Mac and windows 7 file sharing specific user

    - by all-R
    Hi guys, I try to share a specific directory to my windows 7 computer, but I want it to use a specific user that I created on my mac to connect to it. I saw this tutorial: http://www.trickyways.com/2010/06/how-to-access-mac-files-from-windows-7/ wich is exactly what I want to do, but it ain't working. For some reason, it never prompts me for username/password when I try to connect on my mac when I'm on Windows 7. On top of that, when I set the permission "No Access" to the "Everyone" user on my mac, my windows computer simply don't see the directory. If I set the permission to "Read/Write" or "Read only" it works. I simply don't want that everyone in my workgroup to be able to read my files. I want to create specific users on my mac and share them to the persons I want... Any thoughts?

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  • cannot mount remote partition using fstab/fuse

    - by HorusKol
    Using a combination of http://ubuntu-tutorials.com/2007/01/02/mount-remote-directories-securely-with-ssh-ubuntu-6061-610/ and http://www.tuxfiles.org/linuxhelp/fstab.html I figured I could mount the root of another computer to somewhere on my new laptop to make it easier to transfer files and stuff. Now, I can connect through SSH and browser the files through an ad-hoc mount - but I would like to be able to do this automatically, and so had a look at fstab. my new entry in fstab is: remote_comp:/ /var/remote_comp fuse defaults 0 0 but testing with mount -a results in the following error: /bin/sh: remote_comp:/: not found I thought the problem was because I was trying to mount the root of the other computer, but even trying sub-directories result in the same error message.

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  • Missing disc when installing windows 7

    - by Anders
    Hi, when I was installing windows 7 on my new bought computer it asked me on which disc I would like to install the OS on, either the 1 tera byte disc or the ssd disc, I chose to install it on the ssd disc. But now when I have installed the OS, the 1 tera byte disc isn't visible in "my computer" and I don't know how to access it, I didn't do anything strange in the installation, that by the way is idiot secure. So my question, what do you think have happend and how do you believe that this issue is solved? Regards Anders

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  • ubuntu 12.10 installation failure

    - by Eidelmaim
    Here i am asking this question again because someone deemed it a duplicate to another topic which i over looked and NOTHING AT ALL in that topic pertained to my problem. If your going to close a topic believing it is a duplicate at least do somke reasearch into WHY you think its a duplicate and provide a like to a better source. How do i get past this installation username and password issue? I downloaded ubuntu 12.10 directly from Ubuntu.com and created a bootable USB with linuxlive. after loading the boot drive and ubuntu begins, it goes directly from the purple ubuntu startup screen directly to a black DOS like prompt asking for a ubuntu login. this is COMPLETLY before any installation -begins. i need some help with this. FYI : this is what it is saying after it goes to the login area in the DOS (Full black screen) like screen. Ubuntu 12.10 ubuntu tty1 ubuntu login: now i will provide a few images of the problem i am having. and because i DONT HAVE ANY OS on the computer BECAUSE ubuntu WONT go PAST this... i have to snap these pictuires with a cell phone and upload on another PC. these links are in chronological order from time of pressing power button to time i am presented with log in screen : image 1 image 2 can only post 2 links in messages... will post additional links in comments So, again... how do i get past this ? this is entireley before ubuntu is installed on my system. my PC specs... Homebuilt computer: Motherboard is a Asus Sabertooth x58 with a intel core i7 processor. Mushkin memory @ 12gbs. 4ea. Seagate 150gb hard drives. nvidia GTX 260 graphics card. i initially attempted to install to raid 5. failed. i broke down the raid and attempted to install to a single drive with all other drives disconnected from the PC. again, thanks in advanced for any assistance.

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  • Fronteers 2010 &#8212; Brendan Eich announced

    Just like last year, Fronteers, the Dutch association of front-end engineers, is organising a conference, and it looks quite good. For me personally the best part is that I don’t have to do a thing; contrary to the last two years I’m not involved in the organisation at all, and just have to show up and have a good time.We’re especially pleased to be able to announceBrendan Eich,inventor of JavaScript and technical architect for the Mozilla project.Fronteers 2010 will take place on 7 and 8 October...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Getting Xbox Live via a wired network with my laptop that has internet access wirelessly

    - by Alex Franco
    I'm running the latest version (as of yesterday anyways) of Ubuntu Desktop 64bit, but installed on my laptop if it makes a difference. I had Windows 7 preinstalled when i bought it and it worked fine with the wireless from my house and bridging the connection with a LAN to my xbox for Live. Now with Ubuntu I tried the same setup, but I'm unfamiliar with Ubuntu so I didn't get far. Best I got so far is wireless internet on my laptop and a wired connection to the xbox that continually connects and disconnects. Heres my network settings. if theres fields not included its because theyre empty on mine or theyre my MAC address or network password Wireless Network 1 settings: Connect Automatically: Checked. Available to all Users: Checked Wireless: SSID: Franco's Mode: Infrastructure MTU: Automatic IPv4 Settings: Method: Automatic (DHCP) IPv6 Settings: Method: Automatic Wired Network 1: Connect Automatically: Checked Available to all Users: Checked Wired: MTU: Automatic IPv4 Settings: Method: Automatic (DHCP) IPv6 Settings: Method: Automatic Any help would be greatly appreciated. EDIT: 6:26pm It seems to be staying connected now. Doing the Network test on my xbox it pickups the network, but cannot detect any PC. Restarting the Xbox, however, leaves my computer unable to connect bringing up the Wire Network disconnected 'blip' every minute or so again. Before I had restarted the Xbox it said "Connected 100 MB/s". Now it only says "connecting". I did have my computer and xbox on in this Wired Network Disconnected blip cycle for a long period of time so it may have finally connected, just without the ability to detect my laptop. I left for 2 hours or so in the middle of typing up the original question. I finished posting this when i got back and then tried to mess with it a bit again, in case youre wondering why i didnt include this before... I've said too much. Forgive my long-winded fingers :p

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  • Ask the Readers: Do You Use the Command Line?

    - by Jason Fitzpatrick
    Despite over two decades of GUI interfaces many power users still turn to the command prompt. This week we want to hear about when and how you use the command prompt on your computer. Long ago in a time before you could manipulate your computer with a mouse and a series of buttons and windows, the command line ruled all. Even after years of GUI development and refinement many people still turn to the command line to get things done. This week we want to hear all about your command line tips and tricks. Do you use the default command line for your OS? Have you enhanced it? Replaced it? What keeps you coming back to the command line when everyone happily works away in the OS’s GUI? Sound off in the comments and don’t forget to check back in on Friday to see the What You Said roundup. What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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  • How to change GUI language in Outlook 2007

    - by user1466
    A new guy at work moved in from Denmark, which means that he initially logged in to our Outlook Web Access 2007 from a computer with Danish Windows. As a result, all the objects in the tree-view in Outlook are now in Danish. For example, "Inbox" is called "Indbakke". This prevails, even though he has now logged in locally on his assigned work computer which has English Windows. We're running Exchange 2003, if that matters. How do you change the language of the names of the objects in Outlook 2007? The "Microsoft Office 2007 Language Settings" tool doesn't do this, and I couldn't find anything relevant to this by googling either. In Exchange System Manager there are the "Details Templates" which define these things in different languages, but over on his mailbox there was no configuration option to change which language to use.

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  • What's the best solution for file sharing in my case? DAS or NAS?

    - by jakub
    I want to have in my network small, cheap and energy efficient server with will be fully customizable (Gnu/Linux, OpenBSD). What is more I want to have big, redundant storage in my network and access to it via server. I have already small terminal without hard drive (no SATA/PATA, one drive on USB) which works fine. I don't want to buy big server, or to use regular computer for that. It's not cheap. I thought about a small case (ITX?), and cheap computer in this with SATA ports, but I cannot find anything interesting :( I thought about NAS in network and server independently and booting server from NAS, I'm not sure which technologies will be good for that, and I don't know what with performance. Direct connection to NAS through network from workstation is next pro for that. What do you think about DAS? It will be good for that?

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  • Online training modules / programs for best software engineering practices?

    - by Steve
    We're taking over a team in a foreign country and the programming standards there aren't up to par with US standards. Folks there lack the formal training and basic understanding of computing concepts of databases, how computers work, what good software engineering practices are. Short of sending these ppl to college again, are there good online courses available that we can enroll them into so that they can upgrade their skills? I am specifically looking for online training courses, but recommendations for books are also welcome. This is language-agnostic.

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  • How can I access my music anywhere?

    - by musicfreak
    So here's the idea: I use multiple computers on an almost daily basis. I would like to be able to access my entire music library from any of those computers through the Internet. Is there a service or perhaps some software that would allow me to host my music "in the cloud", or in some other way access it from a different computer? I've searched for something like this and the closest I've found is the Media Player application found in Opera Unite, but that requires my home computer to be turned on at all times, which is less than ideal. I'm willing to pay, but not so much that I could just rent a private server for a lower price. Thanks in advance.

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  • Tips on ensuring Model Quality

    - by [email protected]
    Given enough data that represents well the domain and models that reflect exactly the decision being optimized, models usually provide good predictions that ensure lift. Nevertheless, sometimes the modeling situation is less than ideal. In this blog entry we explore the problems found in a few such situations and how to avoid them.1 - The Model does not reflect the problem you are trying to solveFor example, you may be trying to solve the problem: "What product should I recommend to this customer" but your model learns on the problem: "Given that a customer has acquired our products, what is the likelihood for each product". In this case the model you built may be too far of a proxy for the problem you are really trying to solve. What you could do in this case is try to build a model based on the result from recommendations of products to customers. If there is not enough data from actual recommendations, you could use a hybrid approach in which you would use the [bad] proxy model until the recommendation model converges.2 - Data is not predictive enoughIf the inputs are not correlated with the output then the models may be unable to provide good predictions. For example, if the input is the phase of the moon and the weather and the output is what car did the customer buy, there may be no correlations found. In this case you should see a low quality model.The solution in this case is to include more relevant inputs.3 - Not enough cases seenIf the data learned does not include enough cases, at least 200 positive examples for each output, then the quality of recommendations may be low. The obvious solution is to include more data records. If this is not possible, then it may be possible to build a model based on the characteristics of the output choices rather than the choices themselves. For example, instead of using products as output, use the product category, price and brand name, and then combine these models.4 - Output leaking into input giving the false impression of good quality modelsIf the input data in the training includes values that have changed or are available only because the output happened, then you will find some strong correlations between the input and the output, but these strong correlations do not reflect the data that you will have available at decision (prediction) time. For example, if you are building a model to predict whether a web site visitor will succeed in registering, and the input includes the variable DaysSinceRegistration, and you learn when this variable has already been set, you will probably see a big correlation between having a Zero (or one) in this variable and the fact that registration was successful.The solution is to remove these variables from the input or make sure they reflect the value as of the time of decision and not after the result is known. 

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