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• AI Game Programming : Bayesian Networks, how to make efficient?

  - by Mahbubur R Aaman

  We know that AI is one of the most important part of Game Programming. Bayesian networks is one of the core part of AI at Game Programming. Bayesian networks are graphs that compactly represent the relationship between random variables for a given problem. These graphs aid in performing reasoning or decision making in the face of uncertainty. Here me, utilizing the monte carlo method and genetic algorithms. But tooks much time and sometimes crashes due to memory. Is there any way to implement efficiently?

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• Graphics Driver problem, ATI Radeon HD 3200, small screen size and slows everything down.

  - by Arvind Jangid

  Regards. I am using a: 2009 Compaq Presario CQ40-415AU Notebook AMD Athlon X2 Dual core Processor 2.1 GHz 1024 MB L2 cache 3GB DDR2 RAM ATI Radeon + HD 3200 Graphics 256 MB, screen is 14 inch widescreen with resolution of 1280*800. I installed Ubuntu 12.04 LTS 32bit on my laptop. It works brilliantly until I installed graphics driver. When I installed the driver, the graphics became slow. Everything slowed down. Even the splash screen resolution changed to something like 640*480. I have liked Ubuntu since 9.10 and for the freedom it provides and its versatility, but graphics problem remains the same. I even installed Ubuntu on a 50 GB partition with 6 GB swap partition. My HDD is 320 GB. Please tell me what is wrong.

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• Ubuntu 14.04 ATI/Intel Hybrid Graphics DPM

  - by anchit123

  I have a Dell Inspiron 3521 with hybrid ATI/Intel graphics. (AMD Radeon 7670M / Intel HD 4000) using Ubuntu 14.04 with open source drivers for graphics. (xserver-xorg-video-ati) I read that Ubuntu 14.04 with the linux kernel version 3.13 supports auto switching between graphics and dynamic power management. Is it correct? Anyway, if it is true, I dont think that it is working in my system , because fan runs constantly and battery backup is less than 2 hours. lspci | grep -i vga 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7500M/7600M Series] (rev ff) What should I do? Is there any hope that this gets fixed in future kernels?

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• What I do in year to get software oriented job [on hold]

  - by Rohit patil

  I am Rohit patil, studing in 4th year Electronics & telecommunications engineering. I have interest in programming language. I completed c, c++, core java course & get basic knowledge. I have 2 choices to do career in web design or mobile applications, I am confused in which is select. I have one year period for preparing for it. So please give me advice about field is better for me & what I do to get command in that field. Thank you.

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• Ubuntu 12.04.1 Setup doesn't detect Windows 7 partition

  - by Dom

  I'm not really that of a linux pro, more of a noob. But i can handle console operations. Well, this is my system: ASUS ZenBook Prime UX31A 256 GB ADATA MX11 SSD Intel Core i5-3317U (Ivy-Bridge) I have a fresh installation of Windows 7 Ultimate (not activated) on a 90 GB NTFS Partition on my SSD, the rest is unassigned. I want to install Ubuntu 12.04.1 from an USB Stick (no CD-Drive...) created with Universal USB Installer 1.9.1.1. However I'm not givven the option 'Install alongside Windows', and when i choose 'other' it shows that 256 GB of 256 GB are unassigned (free) Memory. os-prober gave me: /dev/sda1/:Windows 7 (loader):Windows:chain I also tried: sudo dmraid -rE and: sudo apt-get remove dmraid with no success... How can I install Ubuntu alongside Windows? Thanks very much in advance!

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• Bluetooth not detected on Asus X401A / Ubuntu 12.10

  - by Majster-pl

  I have Asus X401A ( according to specs bluetooth is build-in to this laptop, http://www.asus.com/Notebooks/Versatile_Performance/X401A/#specifications ) Bluetooth in global settings is gray ( unable to turn it on ) rfkill list output: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: asus-wlan: Wireless LAN Soft blocked: no Hard blocked: no cat /var/log/dmesg | grep Blue* [ 5.895791] Bluetooth: Core ver 2.16 [ 5.895807] Bluetooth: HCI device and connection manager initialized [ 5.895809] Bluetooth: HCI socket layer initialized [ 5.895810] Bluetooth: L2CAP socket layer initialized [ 5.895814] Bluetooth: SCO socket layer initialized [ 5.909618] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 5.909621] Bluetooth: BNEP filters: protocol multicast [ 5.910020] Bluetooth: RFCOMM TTY layer initialized [ 5.910024] Bluetooth: RFCOMM socket layer initialized [ 5.910025] Bluetooth: RFCOMM ver 1.11 hcitool dev Devices: (empty) My wifes laptop Asus K53 have the same problem Ubuntu 12.04 LTS Any help please ?

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• When should I make the first commit to source control?

  - by Kendall Frey

  I'm never sure when a project is far enough along to first commit to source control. I tend to put off committing until the project is 'framework-complete' and primarily commit features from then on. (I haven't done any personal projects large enough to have a core framework too big for this.) I have a feeling this isn't best practice, though I'm not sure what all could go wrong. Let's say, for example, I have a project which consists of a single code file. It will take about 10 lines of boilerplate code, and 100 lines to get the project working with extremely basic functionality (1 or 2 features). Should I first check in: The empty file? The boilerplate code? The first features? At some other point? Also, what are the reasons to check in at a specific point?

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• How do you react to non-programmers with ideas of 'The Next Big Thing' ?

  - by jiceo

  Recently and quite often, people with no programming background come and say they have this great idea that can be the next big thing and that the idea(s) is worth a fortune by itself. Then as they know I'm a programmer, they ask me if I'm willing to "code it up" for them or find someone willing to do it for next to nothing. Judging from the enthusiasm, it's like they're drunk on their idea and that that by itself is the most important thing, but they just need a programmer. My response to them, depending on my mood and their general attitude towards what we do, is something along the lines of: "Having the core of an idea is one thing. Developing it to the point that it becomes a platform that changes the world in which it lives is another, and you're going to be willing to pay proportionately to how big you think your idea is worth." Have you been approached by these business type entrepreneurs (with no technical/developer's knowledge) with such a proposal and how do you react to them?

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• Do I need to know servlets and JSP to learn spring or hibernate or any other java web frameworks?

  - by KyelJmD

  I've been asking a lot of people where to start learning java web development, I already know core java (Threading,Generics,Collections, a little experience with (JDBC)) but I do not know JSPs and servlets. I did my fair share of development with several web based applications using PHP for server-side and HTML,CSS,Javascript,HTML5 for client side. Most people that I asked told me to jump right ahead to Hibernate while some told me that I do not need to learn servlets and jsps and I should immediately study the Spring framework. Is this true? do I not need to learn servlets and JSPs to learn hibernate or Spring? All of their answers confused me and now I am completely lost what to learn or study. I feel that if I skipped learning JSP and servlets I would missed a lot of important concepts that will surely help me in the future. So the question, do I need to have foundation/know servlets and JSP to learn spring or hibernate or any other java web frameworks.?

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• Are there any non-english programming languages? [closed]

  - by samarudge

  Possible Duplicate: Non-English-based programming languages Not sure if this is the right place to ask this, but I'm going to anyway. Without fail, every programming language I've ever seen, used or heard of has it's keywords based around English. if, else, while, for, query, foreach, image, path, extension, the list goes on, are all based around English words. Are there any languages, or ports of languages that base their core keywords based on non-english words to lower the wall for non-english speaking programmers? This is mostly for intrest (English is my first language so it's no problem for me). Are these languages popular locally (I.E. might a software development house in Germany use a programming language based in German over one based in English).

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• How do I play a Blu Ray disc?

  - by hugocreal

  Hello All, I want play a Blu Ray Video from my hard drive with Boxee, but it chokes all the time, i try play with others video players but is the same. I think that is a 10gb .mkv file with 10Gb. Stuttering video with VLC , mplayer, and the default video player on ubuntu... I read in many Forums just can´t put this to work. Any idea? thanks. Ubuntu 10.10, My PC specs: Single Core 2Ghz ATI HD 4350 (i have installed the drivers from "Hardware Drivers"), 2G Memory

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• Hiding php includes from search spiders?

  - by 21stcn

  Quick and simple question. I have 80+ html files which I want to be crawled. They are individual product pages. Each of these pages calls its content using php includes. These php include files are in a separate folder on the server and contain the core content for the individual product pages. I just wanted to ask, if I use robots.txt or .htaccess to prevent crawling of the directory that holds the php content files, will there be no issue crawling the html pages which include these files? What I want to achieve is have the html files indexed with the php content included in them, but I don't want visitors landing on the php content pages, nor have these php files indexed as duplicate content. Just clarification needed as to whether it is safe to block spiders from accessing the php folder, without this affecting the html files being indexed with the included content. Is this the best way to do things? Or should I just leave the content php files to be crawled?

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• C# Adds Optional and Named Arguments

  Earlier this month Microsoft released Visual Studio 2010, the .NET Framework 4.0 (which includes ASP.NET 4.0), and new versions of their core programming languages: C# 4.0 and Visual Basic 10. In designing the latest versions of C# and VB, Microsoft has worked to bring the two languages into closer parity. Certain features available in C# were missing in VB, and vice-a-versa. Last week I wrote about <a href="http://www.4guysfromrolla.com/articles/042110-1.aspx">Visual Basic 2010's language enhancements</a>, which include implicit line continuation, auto-implemented properties, and collection initializers - three useful features that were available in previous versions of C#. Similarly, C# 4.0 introduces new features to the C# programming language that were

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• MDM for Tax Authorities

  - by david.butler(at)oracle.com

  In last week’s MDM blog, we discussed MDM in the Public Sector. I want to continue that thread. After all, no industry faces tougher data quality problems than governmental organizations, and few industries suffer more significant down side consequences to poor operations than local, state and federal governments. One key challenge area is taxation. Tax Authorities face a multitude of IT challenges. Firstly, the data used in tax calculations is increasing in volume and complexity. They must improve service by introducing multi-channel contact centers and self-service capabilities. Security concerns necessitate increasingly sophisticated data protection procedures. And cost constraints are driving Tax Authorities to rely on off-the-shelf software for many of their functional areas. Compounding these issues is the fact that the IT architectures in operation at most revenue and collections agencies are very complex. They typically include multiple, disparate operational and analytical systems across which the sum total of data about individual constituents is fragmented. To make matters more complicated, taxation is not carried out by a single jurisdiction, and often sources of income including employers, investments and other sources of taxable income and deductions must also be tracked and shared among tax authorities. Collectively, these systems are involved in tax assessment and collections, risk analysis, scoring, tracking, auditing and investigation case management. The Problem of Constituent Data Management The infrastructure described above makes it very difficult to create a consolidated representation of a given party. Differing formats and data models mean that a constituent may be represented in one way in one system and in a different way in another. Individual records are frequently inaccurate, incomplete, out of date and/or inconsistent with other records relating to the same constituent. When constituent data must be aggregated and scored, information within each system must be rationalized and normalized so the agency can produce a constituent information file (CIF) that provides a single source of truth about that party. If information about that constituent changes, each system in turn must be updated. There have been many attempts to solve this problem with technology: from consolidating transactional systems to conducting manual systems integration projects and superimposing layers of business intelligence and analytics. All these approaches can be successful in solving a portion of the problem at a specific point in time, but without an enterprise perspective, anything gained is quickly lost again. Oracle Constituent Data Mastering for Tax Authorities: A Single View of the Constituent Oracle has a flexible and long-term solution to the problem of securely integrating and managing constituent data. The Oracle Solution for mastering Constituent Data for Tax Authorities is based on two core product offerings: Oracle Customer Hub and – optionally – Oracle Application Integration Architecture (AIA). Customer Hub is a master data management (MDM) product that centralizes, de-duplicates, and enriches constituent data. It unifies fragmented information without disrupting existing business processes or IT investments. Role based data access and privacy rules guarantee maximum security and privacy. Data is continuously and automatically synchronized with all source systems. With the Oracle Customer Hub managing the master constituent identity, every department can capture transaction activity against the same record, improving reporting accuracy, employee productivity, reliability of constituent analytics, and day-to-day constituent relationships. Oracle Application Integration Architecture provides a collection of core pre-built processes to support out of the box Master Data Governance across Oracle Customer Hub, Siebel CRM, and Oracle E-Business Suite. It also provides a framework to enable MDM integrations with other Oracle and non-Oracle applications. Oracle AIA removes some of the key inhibitors to implementing a service-oriented architecture (SOA) by providing a pre-built SOA-based middleware foundation as well as industry-optimized service oriented applications, all built around a SOA governance model that encourages effective design and reuse. I encourage you to read Oracle Solution for Mastering Constituents Data for Public Sector – Tax Authorities by Roberto Negro. It is an outstanding whitepaper that describes how the Oracle MDM solution allows you to create a unified, reconciled source of high-quality constituent data and gain an accurate single view of each constituent. This foundation enables you to lower the costs associated with data quality and integration and create a tax organization that is efficient, secure and constituent-centric. Also, don’t forget the upcoming webcast on Thursday, February 10th: Deliver Improved Services to Citizens at Lower Cost to your Organization Our Guest Speaker is Ruben Spekle, from Capgemini. He will also provide insight into Public Sector Master Data Management and Case Management implementations including one that was executed for a Dutch Government Agency. If you are interested in how governmental organizations from around the world are using MDM to advance their cause, click here to register for the webcast.

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• Single database, multiple system dependency

  - by davenewza

  Consider an environment where we have a single, core database, with many separate systems using this one database. This leads to all of these systems have a common dependency, which ultimately introduces coupling between them. This means that we cannot always evolve systems independently of each other. Structural changes to the database (even if only intended for one, particular system), requires a full sweep test of ALL systems, and may require that other systems be 'patched' and subsequently released. This is especially tricky when you want to have separate teams working on different projects. What is a good 'pattern' to help in avoiding such coupling? I would imagine that a database should be exclusively depended on by one system. If other systems require data for whatever reason, they should request such from an API service of some kind. A drawback of this approach which comes to mind is performance: routing data between high-throughput systems through service calls is much slower than through a database connection.

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• How to stop programs on starting from returning to log in screen?

  - by Bruce McKean

  I'm not a computer nerd but have been able to fix Ubuntu/Linux problems in the pass two years with a Google search but this on has me stumped. I upgraded to 12.04 about thirty days ago and all was well except that every time I tried to load KeePassX it would go to the login screen. I installed KeePass2 and all seemed to work. Last week I tried to load Bibble5 (Raw photo editor) and it would try to load and then back to the login screen. After a few days I gave up and downloaded Corel After Shot Pro (Corel's now owns Bibble5) and it has the same problem. Could someone please head me into the steps I need to follow to find out what is the cause. I'm interested in learning more about the Linux system how to correct any future problems thanks in advance – Bruce -Computer- Processor : 8x Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz Memory : 8155MB (1092MB used) Operating System : Ubuntu 12.04 LTS OpenGL Renderer : GeForce GT 520/PCIe/SSE2

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• Intel graphics Ubuntu 12.04.3 LTS: does not detect second monitor

  - by user206551

  I have some problems to get the second monitor working on my Ubuntu 12.04.3 LTS. If I click on the detect button it does not work. Info about my system: $uname -a Linux LabTop2 3.8.0-32-generic #47~precise1-Ubuntu SMP Wed Oct 2 16:22:28 UTC 2013 i686 i686 i386 GNU/Linux $cat /etc/*-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.3 LTS" NAME="Ubuntu" VERSION="12.04.3 LTS, Precise Pangolin" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu precise (12.04.3 LTS)" VERSION_ID="12.04" $lspci |grep VGA 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) $lsmod | grep video uvcvideo 72250 0 videobuf2_core 39385 1 uvcvideo videodev 96131 2 uvcvideo,videobuf2_core videobuf2_vmalloc 12920 1 uvcvideo videobuf2_memops 13042 1 videobuf2_vmalloc video 19116 1 i915 $xrandr -q xrandr: Failed to get size of gamma for output default Screen 0: minimum 1366 x 768, current 1368 x 768, maximum 1368 x 768 default connected 1368x768+0+0 0mm x 0mm 1366x768 0.0 1368x768 0.0* Before upgrading the system, xrand -q showed my much more resolution options and the other monitor. I have tried to install intel-linux-graphics-installer but this version of ubuntu is not supported Any help will be apreciated!!

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• Firefox is pounding my system what should I do

  - by nikhil

  I'm running the latest version of firefox 17.0.1 on ubuntu 12.10 on a Acer Aspire One 722 Netbook. It has an amd dual core C60 processor and 2GB RAM. As you can see, firefox is absolutely killing my system, it responds really slowly and opening tabs is a royal pain. I have on an average 4-5 open tabs at a given time. Is there something that I can do to make my browsing experience more zippy? Additionally I run the following addons Firebug HTTPS Everywhere Ad block plus

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• Any good tutorials all this web programming stuff for a GUI person? [closed]

  - by supercheetah

  For some reason, I am having a hard time understanding all this web programming stuff--from AJAX to JSON, etc. I've got plenty of experience programming GUIs. I'm currently working on a project in Python, and I thought that maybe I could just use PyJS (since it's GWT for Python, it uses an API that's very familiar to experienced GUI programmers like myself) to compile it with a Javascript interface on top, but alas, the compiler gave me a spectacular failure. It's obviously not meant to handle much of any Python beyond itself, and some of the core Python library. It would have been nice if it could, but I will admit, it would have been the lazy way to do it. I tried to learn Django, but for some reason, I'm just having a hard time understanding the tutorial on their website, and what it's all doing. Maybe it's not the best framework to learn, perhaps? Anyway, does anyone have a good primer/tutorial explaining all this stuff, especially for Python, and especially for someone coming from a GUI background?

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• Parallelism implies concurrency but not the other way round right?

  - by Cedric Martin

  I often read that parallelism and concurrency are different things. Very often the answerers/commenters go as far as writing that they're two entirely different things. Yet in my view they're related but I'd like some clarification on that. For example if I'm on a multi-core CPU and manage to divide the computation into x smaller computation (say using fork/join) each running in its own thread, I'll have a program that is both doing parallel computation (because supposedly at any point in time several threads are going to run on several cores) and being concurrent right? While if I'm simply using, say, Java and dealing with UI events and repaints on the Event Dispatch Thread plus running the only thread I created myself, I'll have a program that is concurrent (EDT + GC thread + my main thread etc.) but not parallel. I'd like to know if I'm getting this right and if parallelism (on a "single but multi-cores" system) always implies concurrency or not? Also, are multi-threaded programs running on multi-cores CPU but where the different threads are doing totally different computation considered to be using "parallelism"?

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• Working as Test Engineer and looking to move into Identity Management Technology. Possible?

  - by Aditi Bhatnagar

  I have been working as Test Engineer for past 2.5 year. The project is related to Identity Management and I am in love with the technology. I want to move into the same field. I don't aim to be a hard core coder but rather an analyst or an IDM architect. Is it realistically possible to do so? I see some possible issues, since the field is fairly new in India and for the time being I don't have coding/deployment experience at all. If it is nonetheless possible to switch into this new technology, what kind of effort I have to put in? What are the possible steps that you can suggest to try this switch?

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• Is Dell Inspiron 15R Special Edition compatible with Ubuntu?

  - by Obada Talal Abu Arisheh

  I want to buy a Dell Inspiron 15R Special Edition. On ubuntu.com, it says that Dell Inspiron 15R will work properly. But the special edition has some special issues. I will list the hardware: 3rd Generation Intel® Core™ i7-3612QM processor (6M Cache, up to 3.1 GHz) 15.6" Full High Definition (1080p) LED Display 8GB2 Dual Channel DDR3 SDRAM at 1600MHz 750GB 7200 RPM SATA Hard Drive 8X Tray Load CD/DVD Burner (Dual Layer DVD+/-R Drive) AMD Radeon™ HD 7730M 2GB Built-in Skullcandy™ stereo speakers and Waves MaxxAudio® 4 technology Will it have any problem?

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• Will unity stop being a plugin for Compiz?

  - by Murphy1138

  I ask this as with the Unity Desktop running , when I try any games with my Ubuntu 12.04.1 I get so much frame rate drop with Unity and Compiz. If I switch to Gnome-Classic which uses mutter, I get a vast boost in performance. My system is an 8 core AMD with a Nvidia 460 SE that can play anything I chuck at it in Windows and I'm using the latest Nvidia drivers, but even simple games like the humble bundle gets serious lag with Unity and the only cause of this can be compiz (what I can guess). When Steam come to Ubuntu, how will this performance loss be addressed?

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• How do I get security updates for restricted/partner packages?

  - by laramichaels

  I want to perform just security updates on Ubuntu 12.04 LTS, keeping the rest of the system unchanged. I need to do this from the command line, no the GUI update manager. I have implemented the solution described here, which seems to work great for this purpose. I merely substituted 'precise' for 'lucid' given that I am on 12.04. My question is: by using apt pinning as described in that answer, will I still receive security updates for packages distributed through the "other" repositories - partner, restricted, multiverse, etc? Or will it only get me updates for the packages in the "core" distribution? thanks! ~l

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• Packard Bell Easynote NJ65 not saving gamma Setup.

  - by Pablo Gomez

  Hi. There seems to be a issue with the Easynote range of PB laptops. Since Ubuntu 10.10 does not use a Xorg.conf file to save your gamma / resolution /brightness setting, everytime I turn on my laptop I have to open up a terminal window and use the x-gamma command to set it up to my personal preference. Is there a way to create a configuration file which can save that into the system everytime I load up the OS? When I used to have a Compaq Presario (an F564LA with integrated nVIDIA graphics), I could save a config. file into the system which loaded up everything on startup To those who don't know the spec's for a NJ65 laptop, I'll provide them Processor: Intel® Pentium Dual Core @ 2.2 GHZ Video: Integrated Intel® GMA 4500MHD graphics HDD: 320GB SATA RAM: 2GB DDR2

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