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  • Operant conditioning algorithm?

    - by Ken
    What's the best way to implement real time operant conditioning (supervised reward/punishment-based learning) for an agent? Should I use a neural network (and what type)? Or something else? I want the agent to be able to be trained to follow commands like a dog. The commands would be in the form of gestures on a touchscreen. I want the agent to be able to be trained to follow a path (in continuous 2D space), make behavioral changes on command (modeled by FSM state transitions), and perform sequences of actions. The agent would be in a simulated physical environment.

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  • A company that had a successful product but went bust for not innovating?

    - by Dan
    At the company that I work we have a successful software product that did well but is now obsolete and unmaintainable. I am trying to explain that you need to innovate and replace this product with new offering in order to survive. I am looking for some good examples of companies that made the mistake that we are close to making - relying on one successful product way over it's normal lifetime, so I could use it as illustration when making an argument. These products need not be software, emblematic cases that illustrate well this situation but where product was not software are also appreciated.

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  • Should we develop code on a local machine in a VLAN?

    - by red tiger
    Because of security reasons, we will not be able to use IIS on our local machines. I'm sure that many of you have faced the same problem, so how did you solve it? Here are the options that we're looking at: Create a VLAN that is isolated from the network for development. This will allow us to use any software, including IIS, that we want. A disadvantage is testing Web services with external organizations, which can be overcome by using stubs. Not use a VLAN and use only the ASP.NET Development Server that comes with Visual Studio, and then deploying that code to the development server. This has the disadvantage of not being able to replicate the production environment during local development. In addition, at least one developer needs IIS for GIS development, so he couldn't develop locally. Thank you for comments or suggestions that you may have!

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  • Creating a drawable rectangle in xml with one gradient on the top half and another on the bottom hal

    - by synic
    I'm trying to create a drawable in xml, a rectangle with one gradient on the top half, and another on the bottom half. This is NOT the way to do it, apparently: <?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item> <shape android:shape="rectangle"> <gradient android:startColor="#5a5a5a88" android:endColor="#14141488" android:angle="270" android:centerX="0.25"/> </shape> </item> <item> <shape android:shape="rectangle" android:top="80px"> <gradient android:startColor="#5aff5a88" android:endColor="#14ff1488" android:angle="270" android:centerX="0.25"/> </shape> </item> </layer-list> How can I do this, preferably in a way that makes it stretchable to any height?

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  • Why is my metro screen getting extended to half of the second screen?

    - by maximusyoda
    When I extend my desktop to the second screen, it stays fine for a few minutes, but after a while, the first metro screen stretches all the way to half of the second screen. The search bar etc stops working. The desktop itself shares fine. But the metro screen is messed up as well as the resolution. The second screen is using the recommended resolution. All I want is to have an extended screen. The problem occurs in my office Windows 8 laptop as well. Not sure what to do with it. Device: Surface Pro 2 External Monitor: Dell 2208WFP 1680 x 1050 Pixel Resoultion 22''

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  • How to enter Devanagari half-R character in Emacs MULE?

    - by journeyer
    I am trying the Emacs MULE ITRANS input method to enter Devanagari unicode text. I am looking to enter a key sequence for Devanagari letter "Half-R" (??) i.e. U0931 U094d (which should be mapped to R according to the ITRANS Wikipedia page). While all other keys in the map work fine, this particular one does not! I know I can use M-x ucs-insert (or CTRL-x-8 RET) to enter this sequence, but it is getting tiresome. How do I fix this problem ?

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  • Don’t miss rare Venus transit across Sun on June 5th. Once in a life time event.

    - by Gopinath
    Space lovers here is a rare event you don’t want to miss. On June 5th or 6th of 2012,depending on which part of the globe you live, the planet Venus will pass across Sun and it will not happen again until 2117. During the six hour long spectacular transit you can see the shadow of Venus cross Sun. The transit of Venus occurs in pairs eight years apart, with the previous one taking place in 2004. The next pair of transits occurs after 105.5 & 121.5 years later. The best place to watch the event would be a planetarium nearby with telescope facility. If not you watch it directly but must protect your eyes at all times with proper solar filters. Where can we see the transit? The transit of Venus is going to be clearly visible in Europe, Asia, United States and some part of Australia. Americans will be able to see transit in the evening of Tuesday, June 5, 2012. Eurasians and Africans can see the transit in the morning of June 6, 2012. At what time the event occurs? The principal events occurring during a transit are conveniently characterized by contacts, analogous to the contacts of an annular solar eclipse. The transit begins with contact I, the instant the planet’s disk is externally tangent to the Sun. Shortly after contact I, the planet can be seen as a small notch along the solar limb. The entire disk of the planet is first seen at contact II when the planet is internally tangent to the Sun. Over the course of several hours, the silhouetted planet slowly traverses the solar disk. At contact III, the planet reaches the opposite limb and once again is internally tangent to the Sun. Finally, the transit ends at contact IV when the planet’s limb is externally tangent to the Sun. Event Universal Time Contact I 22:09:38 Contact II 22:27:34 Greatest 01:29:36 Contact III 04:31:39 Contact IV 04:49:35   Transit of Venus animation Here is a nice video animation on the transit of Venus Map courtesy of Steven van Roode, source NASA

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  • What are some handy tools in Windows that makes programmers life easy ? [closed]

    - by Omeid Herat
    I think there are some tools that almost every programmers needs so I though it might be useful if we can share it, please Name it and give an small description of the tools and link if possible. So here is the first one: WinMerge : WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.

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  • What real life bad habits has programming given you?

    - by Jacob T. Nielsen
    Programming has given me a lot of bad habits and it continues to give me more everyday. But I have also gotten some bad habits from the mindset that I have put myself in. There simply are some things that are deeply rooted in my nature, though some of them I wish I could get rid of. A few: Looking for polymorphism, inheritance and patterns in all of God's creations. Explaining the size of something in pixels and colors in hex code. Using code related abstract terms in everyday conversations. How have you been damaged?

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  • Any way to bring my laptop battery back to life?

    - by Josh
    Recently my laptop battery will get extremely hot (definitely hotter than it should get) when I charge it. After that I usually end up removing it once it's fully charged to let it cool down, which takes a couple hours... Question is, is my battery dead? My last battery I had that died just ended up lasting 2 - 3 minutes on battery, no weird heat issues. And is there any way to possibly fix this? Probably not but I won't be able to get a replacement anytime soon. UPDATE: A few days ago when this happened and it cooled down, assuming it was fully charged, I ran my laptop on battery, and the battery life lasted about 10 minutes and then the laptop shutdown. I then plugged it in later and charged it back up, and for a while I had a orange light blinking on my laptop - which I assumed meant the battery was dead, especially since I got 10 minutes battery life. Then today, I turned my laptop on and was surprised to see that the battery was at 20% and charging (it's been plugged in since the incident above, so it should have been fully charged when I shut it off) I let it charge up, and as usual it got pretty hot around the time it was fully charged. So I turned my laptop off and pulled the battery out to let it cool down Now the thing is, just now I tried running it on battery, and it's been going for an hour now... so maybe its not dead? (also the orange light is no longer blinking...) Thanks in advance if anyone knows whats going on, and how to fix it, if its fixable =] EDIT: Some info if it helps... my laptop is about 2 years ago, and it's an Asus K50ID. I know laptop batteries usually don't last more than a year but I'm trying to keep this one going for as long as I can.

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  • Do you ask questions in real life like you do at SE.com?

    - by tactoth
    At this website I find amazing questions for programmers. Then I realized that I don't discuss these questions with my colleagues as often. You see, we're all programmers and we are supposed to have talked about these, (in a everyday conversation what we can talk would be more meaningful because it's faster) but we don't. So what about you? Do you enjoy discussing interesting programmer related topics with your programmer friends?

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  • What are the real life implications for an Apache 2 license?

    - by Duopixel
    I want to use SVG Edit for project. This software is distributed under the Apache 2 license. I've seen that: all copies, modified or unmodified, are accompanied by a copy of the licence all modifications are clearly marked as being the work of the modifier all notices of copyright, trademark and patent rights are reproduced accurately in distributed copies the licensee does not use any trademarks that belong to the licensor Do these pertain to the code or should I display the license somewhere in the GUI? The orignal software displays a "powered by SVG Edit", is it ok if I remove this? And most importantly: what is the correct etiquette for doing this? I don't want to be an asshole, but at the same time I want to simplify the UI as much as possible and removing the link will be part of it if it's not considered rude.

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  • What should I do next in my life as a programmers? [closed]

    - by user1769787
    I am doing work in asp.net (mvc) in my starting days of programming 2 years ago.I have done work on some web-apps. I am not comfortable with c# but have working skill in jQuery and front-end development. from a year I do UI kind of work. Now someone can suggest me what should I do for next. Should I learn asp.net mvc or I should go for PHP then I can do some wordpress development. The problem is I never found small people use asp.net rather then PHP.( I am not currently employed). Someone can help me what should I do. I have front-end skill (not in programming) so what Is best for me to do.

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  • How can I inform search engines that the usefulness of some content on my site has a limited shelf life?

    - by Tim Post
    Let's say that I run a forum dedicated to computer hardware. Naturally, people are going to ask questions like: What is the best laptop for running [os] Or What is the best video card for under [amount] These may be perfectly fine discussions, but the content loses usefulness over time. An answer to either question asked in 2007 might still be relevant in 2008, but definitely not in 2012. Is there a way that I can tell search engines that certain pages might not give visitors what they're looking for after a certain date, and perhaps hint to a page on my site that would provide good information? Perhaps something I could set in HTTP response headers, meta tags or even a site map?

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  • From the Tips Box: Life after Babel Fish, Hidden Features in iOS apps, and Finding Clean Beaches with a Smartphone

    - by Jason Fitzpatrick
    Once a week we round up some of the great reader tips that come pouring in and share them with everyone. This week we’re looking at Bing’s absorbtion of Babelfish, hidden features in iOS apps, and how to find a clean beach with your smartphone. HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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  • How to alter image pixels of a wild life bird?

    - by NoobScratcher
    Hello so I was hoping someone knew how to move or change color and position actual image pixels and could explain and show the code to do so. I know how to write pixels on a surface or screen-surface usigned int *ptr = static_cast <unsigned int *> (screen-pixels); int offset = y * (screen->pitch / sizeof(unsigned int)); ptr[offset + x] = color; But I don't know how to alter or manipulate a image pixel of a png image my thoughts on this was How do I get the values and locations of pixels and what do I have to write to make it happen? Then how do I actually change the values or locations of those gotten pixels and how do I make that happen? any ideas tip suggestions are also welcome! int main(int argc , char *argv[]) { SDL_Surface *Screen = SDL_SetVideoMode(640,480,32,SDL_SWSURFACE); SDL_Surface *Image; Image = IMG_Load("image.png"); bool done = false; SDL_Event event; while(!done) { SDL_FillRect(Screen,NULL,(0,0,0)); SDL_BlitSurface(Image,NULL,Screen,NULL); while(SDL_PollEvent(&event)) { switch(event.type) { case SDL_QUIT: return 0; break; } } SDL_Flip(Screen); } return 0; }

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  • How to deal with "software end-of-life" situations?

    - by rwong
    When a vendor declares that they no longer intend to provide any support or services to a piece of software (and stated the intent to exit the business - offering no upgrade paths), and stated that customers must pay a nominal fee in order to have the existing data exported, what kind of recourse do programmers/customers have? Things I can think of: Need to purchase spare hardware and set up a spare environment on which the software can continue to operate. Various data export methods which do not require vendor involvement. (For example, screen scraping, printing to image followed by re-scanning, etc) Parallel systems where staff will duplicate the old data into a new system manually or semi-automatically Legal means, in case the vendor is in financial trouble Any other ideas? Assuming that there is no "circumvention" involved (no DRM, no DMCA), is data recovery or reverse engineering legal/acceptable?

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  • FxCop ... Where have you been all my life?

    - by PhilSando
    I was recently introduced to microsoft's tool that analyzes managed code assemblies called FxCop. It points out possible design, localization, performance, and security improvements against a pre defined set of rules (and also accepts custom rules). At first I was unsure how to go about using it as it seems to be aimed at software developers (.exe and .dll) . Its easy to get around this with the following steps: 1)Create a new folder (i.e C:\Code Analysis) 2)Publish your web application into the new folder 3)Open FxCop and add all the dll files from the newly created bin folder  to be scrutinized. Lots more info / docs available here on msdn and you can also download fxcop free

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