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  • Twitter Customer Sentiment Analysis

    - by Liam McLennan
    The breakable toy that I am currently working on is a twitter customer sentiment analyser. It scrapes twitter for tweets relating to a particular organisation, applies a machine learning algorithm to determine if the content of tweet is positive or negative, and generates reports of the sentiment data over time, correlated to dates, events and news feeds. I’m having lots of fun building this, but I would also like to learn if there is a market for quantified sentiment data. So that I can start to show people what I have in mind I have created a mockup of the simplest and most important report. It shows customer sentiment over time, with important events highlighted. As the user moves their mouse to the right (forward in time) the source data area scrolls up to display the tweets from that time. The tweets are colour coded based on sentiment rating. After I started working on this project I discovered that a team of students have already built something similar. It is a lot of fun to enter your employers name and see what it says.

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  • Command Query Separation

    - by Liam McLennan
    Command query separation is a strategy, proposed by Bertrand Meyer, that each of an object’s methods should be either a command or a query. A command is an operation that changes the state of a system, and a query is an operation that returns a value. This is not the same thing as CQRS, hence why I think that CQRS is poorly named. An Example of Command Query Separation Consider a system that models books and shelves. There is a rule that a shelf may not be removed if it holds any books. One way to implement the removal is to write a method Shelf.Remove() that internally checks to make sure that the shelf is empty before removing it. If the shelf is not empty then it is not removed and an error is returned. To implement this feature following the principle of command query separation would require two methods, one to query the shelf and determine if it is empty and a second method to remove the shelf. Separating the query from the command makes the shelf class simpler to use because the state change is clear and explicit.

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  • Simple moving object jitters every couple of seconds [on hold]

    - by Liam
    I'm trying to get smooth movement in my game, right now every couple of seconds the moving square jitters. I'm using C++ with SDL2. I made a very simple project to test different methods so all that's happening is a box moves across the screen. Here's a pastebin of the code http://pastebin.com/7YxxSw0D Here's a link to a dropbox folder containing the 'game' https://www.dropbox.com/sh/0ygntl140qv8iv0/AABVuuk6khArOJmdBi1OaFlua?dl=0 Any input would be greatly appreciated, and let me know if you need any more info. Thanks!

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  • Learning PHP from beginner to advanced

    - by Liam
    I've dabbled with PHP for a few years now and I'm capable of most of the basic things, building login forms etc but from my time on here I've noticed there's so much more I need to learn, like best practices, security issues etc and so I want to learn everything from the very basics. In the past I've used forums and browsed the web for snippets of code only I think this has led to my bad practices, can anybody recommend books or Valid, recommended learning sources? Thanks in advance!

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  • Update to Where&rsquo;s My Graphic Equalizer in Windows Media Player &ndash; now covers Windows 8

    - by Liam Westley
    Originally posted on: http://geekswithblogs.net/twickers/archive/2013/11/11/update-to-wherersquos-my-graphic-equalizer-in-windows-media-player.aspxHave you wondered where the graphics equaliser in the Windows 8 version of Windows Media Player has moved?  It’s certainly not on the menu option you’d think it is …. well, I’ve updated my Windows 7 post to include Windows 8, it’s over here http://geekswithblogs.net/twickers/archive/2009/10/23/135680.aspx.

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  • What &lsquo;enterprise&rsquo; doesn&rsquo;t understand about risk

    - by Liam McLennan
    Enterprises (large bureaucracies) obsess about risk. I think it is because of the inertia generated by the process and politics that they have to deal with. The trouble is that they respond to risk in precisely the wrong way: by adding complexity. Need to call a method? Better wrap it in WCF service. Need to talk to another application? Better hook a message queue to a service bus connected to a biztalk sharepoint – on Oracle. Here is a simple guide: Complexity increases risk. Simplicity reduces risk.

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  • Learning PHP from beginner to advanced [closed]

    - by Liam
    I've dabbled with PHP for a few years now and I'm capable of most of the basic things, building login forms etc but from my time on here I've noticed there's so much more I need to learn, like best practices, security issues etc and so I want to learn everything from the very basics. In the past I've used forums and browsed the web for snippets of code only I think this has led to my bad practices, can anybody recommend books or Valid, recommended learning sources? Thanks in advance!

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  • SQL Server architecture guidance

    - by Liam
    Hi, We are designing a new version of our existing product on a new schema. Its an internal web application with possibly 100 concurrent users (max)This will run on a SQL Server 2008 database. On of the discussion items recently is whether we should have a single database of split the database for performance reasons across 2 separate databases. The database could grow anywhere from 50-100GB over 5 years. We are Developers and not DBAs so it would be nice to get some general guidance. [I know the answer is not simple as it depends on the schema, archiving policy, amount of data etc. ] Option 1 Single Main Database [This is my preferred option]. The plan would be to have all the tables in a single database and possibly to use file groups and partitioning to separate the data if required across multiple disks. [Use schema if appropriate]. This should deal with the performance concerns One of the comments wrt this was that the a single server instance would still be processing this data so there would still be a processing bottle neck. For reporting we could have a separate reporting DB but this is still being discussed. Option 2 Split the database into 2 separate databases DB1 - Customers, Accounts, Customer resources etc DB2 - This would contain the bulk of the data [i.e. Vehicle tracking data, financial transaction tables etc]. These tables would typically contain a lot of data. [It could reside on a separate server if required] This plan would involve keeping the main data in a smaller database [DB1] and retaining the [mainly] read only transaction type data in a separate DB [DB2]. The UI would mainly read from DB1 and thus be more responsive. [I'm aware that this option makes it harder for Referential Integrity to be enforced.] Points for consideration As we are at the design stage we can at least make proper use of indexes to deal performance issues so thats why option 1 to me is attractive and its more of a standard approach. For both options we are considering implementing an archiving database. Apologies for the long Question. In summary the question is 1 DB or 2? Thanks in advance, Liam

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  • how do I make my Dualshock 3 gamepad work in Ubuntu 14.04?

    - by user290527
    When my desktop computer was running Ubuntu 12.04, my PS3 controllers would work with USB. I didn't need to do any special setup. I could just plug it in before I start SuperTuxKart and it would recognize it. I can also do this on my laptop (still running 12.04). Since I gave my desktop a fresh install of Ubuntu 14.04, the controller would never work. I have played with some installed software that I found when looking for information. Here is what I get with xboxdrv: liam@Liam-CustomDesktop:~$ sudo xboxdrv --detach-kernel-driver xboxdrv 0.8.5 - http://pingus.seul.org/~grumbel/xboxdrv/ Copyright © 2008-2011 Ingo Ruhnke <[email protected]> Licensed under GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This program comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details. Controller: PLAYSTATION(R)3 Controller Vendor/Product: 054c:0268 USB Path: 003:012 Controller Type: Playstation 3 USB Your Xbox/Xbox360 controller should now be available as: /dev/input/js0 /dev/input/event16 Press Ctrl-c to quit, use '--silent' to suppress the event output So the existence of this controller is acknowledged at on my computer. But it never works for input. In my old installation, I didn't even need to get software like xboxdrv for it to work. I have never tried bluetooth on either computer, but I don't think I even have that on my desktop. So now, how do I make my gamepad work in Ubuntu 14.04?

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  • How to break WinDbg in an anonymous method?

    - by Richard Berg
    Title kinda says it all. The usual SOS command !bpmd doesn't do a lot of good without a name. Some ideas I had: dump every method, then use !bpmd -md when you find the corresponding MethodDesc not practical in real world usage, from what I can tell. Even if I wrote a macro to limit the dump to anonymous types/methods, there's no obvious way to tell them apart. use Reflector to dump the MSIL name doesn't help when dealing with dynamic assemblies and/or Reflection.Emit. Visual Studio's inability to read local vars inside such scenarios is the whole reason I turned to Windbg in the first place... set the breakpoint in VS, wait for it to hit, then change to Windbg using the noninvasive trick attempting to detach from VS causes it to hang (along with the app). I think this is due to the fact that the managed debugger is a "soft" debugger via thread injection instead of a standard "hard" debugger. Or maybe it's just a VS bug specific to Silverlight (would hardly be the first I've encountered). set a breakpoint on some other location known to call into the anonymous method, then single-step your way in my backup plan, though I'd rather not resort to it if this Q&A reveals a better way

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  • C# - closures over class fields inside an initializer?

    - by Richard Berg
    Consider the following code: using System; namespace ConsoleApplication2 { class Program { static void Main(string[] args) { var square = new Square(4); Console.WriteLine(square.Calculate()); } } class MathOp { protected MathOp(Func<int> calc) { _calc = calc; } public int Calculate() { return _calc(); } private Func<int> _calc; } class Square : MathOp { public Square(int operand) : base(() => _operand * _operand) // runtime exception { _operand = operand; } private int _operand; } } (ignore the class design; I'm not actually writing a calculator! this code merely represents a minimal repro for a much bigger problem that took awhile to narrow down) I would expect it to either: print "16", OR throw a compile time error if closing over a member field is not allowed in this scenario Instead I get a nonsensical exception thrown at the indicated line. On the 3.0 CLR it's a NullReferenceException; on the Silverlight CLR it's the infamous Operation could destabilize the runtime.

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  • Powershell advanced functions: are optional parameters supposed to get initialized?

    - by Richard Berg
    filter CountFilter($StartAt = 0) { Write-Output ($StartAt++) } function CountFunction { [CmdletBinding()] param ( [Parameter(ValueFromPipeline=$true, Mandatory=$true)] $InputObject, [Parameter(Position=0)] $StartAt = 0 ) process { Write-Output ($StartAt++) } } $fiveThings = $dir | select -first 5 # or whatever "Ok" $fiveThings | CountFilter 0 "Ok" $fiveThings | CountFilter "Ok" $fiveThings | CountFunction 0 "BUGBUG ??" $fiveThings | CountFunction I searched Connect and didn't find any known bugs that would cause this discrepancy. Anyone know if it's by design?

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  • Method binding to base method in external library can't handle new virtual methods "between"

    - by Berg
    Lets say I have a library, version 1.0.0, with the following contents: public class Class1 { public virtual void Test() { Console.WriteLine( "Library:Class1 - Test" ); Console.WriteLine( "" ); } } public class Class2 : Class1 { } and I reference this library in a console application with the following contents: class Program { static void Main( string[] args ) { var c3 = new Class3(); c3.Test(); Console.ReadKey(); } } public class Class3 : ClassLibrary1.Class2 { public override void Test() { Console.WriteLine("Console:Class3 - Test"); base.Test(); } } Running the program will output the following: Console:Class3 - Test Library:Class1 - Test If I build a new version of the library, version 2.0.0, looking like this: public class Class1 { public virtual void Test() { Console.WriteLine( "Library:Class1 - Test V2" ); Console.WriteLine( "" ); } } public class Class2 : Class1 { public override void Test() { Console.WriteLine("Library:Class2 - Test V2"); base.Test(); } } and copy this version to the bin folder containing my console program and run it, the results are: Console:Class3 - Test Library:Class1 - Test V2 I.e, the Class2.Test method is never executed, the base.Test call in Class3.Test seems to be bound to Class1.Test since Class2.Test didn't exist when the console program was compiled. This was very surprising to me and could be a big problem in situations where you deploy new versions of a library without recompiling applications. Does anyone else have experience with this? Are there any good solutions? This makes it tempting to add empty overrides that just calls base in case I need to add some code at that level in the future...

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  • IIS 6.0: what is the WMI equivalent of "Convert Folder To Application"?

    - by Richard Berg
    Basically, imagine you need to automate these steps: Open Internet Information Services. Find the web site, find the folder, right click the folder and select properties. Click the Directory folder. Under Applications settings, click the Create button. The application is now created. Click OK to finish. (click for a pictoral walkthru) My end goal is Powershell, but answers that use JScript or VB.NET or whatever are fine too. Bonus points if the same code works against an IIS7 application running in 6.0 Compatibility Mode.

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  • AMD Phenom 2 is idling at 50°C, can I get it cooler?

    - by liam
    Is it possible to damage a CPU so that it works, but only at high temperatures? My Phenom 2 1090T is idling at 50°C and I have tried everything to get it down. I can play Deus Ex HR, Arkham City, or Dirt 3 and it hovers around 60. I have cleaned out all my fans: 2 intake (front and side), 1 exhaust (Arctic Freezer). My machine is a brand new Antec 520 high current gamer. Also: Extreme3 770 8 GB Kingston DDR3 (2x4 GB) 750 GB Seagate Barracuda ASUS Xonar DG Radeon HD 5670 New Arctic Freezer Pro Rev 2 (days old and mounted properly with Arctic Silver 5). I also dropped an Athlon 250 dual core into my rig and that ran at under 30. Is the CPU dying? I know that 50°C idle for an AMD is not normal.

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  • Expanding Files 0%, error 0x80070017 Windows 7 x64 RTM

    - by Liam
    I have downloaded Windows 7 x64 from MSDN. I have checked the hash of the file and it is correct. I have them made a bootble USB stick (http://kmwoley.com/blog/?p=345 (had to use my vista bootsect.exe as running 32bit at the moment). When I boot from the USB it fails when expanding the file. It stays on 0% and fails after around 90 seconds. The error is 0x80070017. As the hash is correct and I am using USB I guess it could be a hardware problems. Any advice how to get Windows 7 installed? The machine is a Dell Studio Slim.

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  • Unsigned lenny packages with aptitude safe-upgrade

    - by Liam
    I have several Debian lenny computers. Two have nearly identical sources.list files. On both, I do regular update/safe-upgrades. On one it always goes smoothly. On the other, much of the time I get the following: sudo aptitude safe-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done Reading task descriptions... Done The following packages will be upgraded: krb5-clients krb5-ftpd krb5-rsh-server krb5-telnetd krb5-user libimlib2 libkadm55 libkrb53 libpng12-0 libpulse0 xpdf xpdf-common xpdf-reader 13 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 2906kB of archives. After unpacking 36.9kB will be used. Do you want to continue? [Y/n/?] WARNING: untrusted versions of the following packages will be installed! Untrusted packages could compromise your system's security. You should only proceed with the installation if you are certain that this is what you want to do. krb5-rsh-server krb5-user krb5-ftpd krb5-clients libkrb53 xpdf-reader libpng12-0 libkadm55 xpdf libpulse0 libimlib2 krb5-telnetd xpdf-common Do you want to ignore this warning and proceed anyway? To continue, enter "Yes"; to abort, enter "No": no Abort. Needless to say, I don't proceed. What is going on? How do I fix it? These are the non-comment lines in the sources.list for this computer: deb ftp://ftp.debian.org/debian/ lenny main contrib non-free deb-src ftp://ftp.debian.org/debian/ lenny main contrib deb http://security.debian.org/ lenny/updates main contrib non-free Thank you.

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  • Team Foundation Server 2010 and Sharepoint/WSS3.0

    - by Liam
    As I'm new to Team Foundation Server, this may seem a bit of a daft question but I have been tasked with installing TFS2010. What I want to know is, do I have to have a full version of MOSS 2007 installed to build a project dashboard for TFS or can I get away with just using WSS 3.0 that comes with TFS? Having looked through the docs for TFS, I get the idea that I have to have a full Sharepoint installation somewhere. Though I'd like this to be clarified if possible. Thanks in advance.

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  • How to convert video to images?

    - by Liam
    How can I convert a video file to a sequence of images, for example one frame every N seconds. Can mplayer or ffmpeg do this? I have used MPlayer to grab screenshots manually but I would like to automate this for a long video.

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  • router only assigns small number of IPs

    - by Liam Coates
    Been having a problem with my router for a while now, might just be because it is really old but here's the problem: If a lot of computers are connected to my home network someone will get disconnected. They are assigned IPs and it seems like at a certain point (and I don't know how many) you either get assigned the same IP as someone else or something else is happening and you get disconnected - until i soft reset it and it works again which takes 30 secs. I'd say my tablet, my PC, my sisters iPad, 2 laptops and a netbook is the most that can be connected at one time so that is 6 but that should be fine. The only way I know this is the problem is because I turned on my tablet and I was online on my PC, got disconnected but my tablet was still connected, this is just after i turned the tablet on so I know my router is having difficulty with IPs, it is like it assigned the same IP to the tablet which then clashed with my desktop and knocked me off. I see that sometimes the following solves it as well so I wrote a batch file with a menu to execute these commands as I have to do it so often. ipconfig /release ipconfig /flushdns ipconfig /renew Any ideas? Or shall I just get a new router as this one is old and maybe can't handle giving out that many IPs? Cheers!

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  • SQL2008R2 install issues on windows 7 - unable to install setup support files?

    - by Liam
    I am trying to install the above but am getting the following errors when its attempting to install the setup support files, This is the first error that occurs during installation of the setup support files TITLE: Microsoft SQL Server 2008 R2 Setup ------------------------------ The following error has occurred: The installer has encountered an unexpected error. The error code is 2337. Could not close file: Microsoft.SqlServer.GridControl.dll GetLastError: 0. Click 'Retry' to retry the failed action, or click 'Cancel' to cancel this action and continue setup. For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft+SQL+Server&EvtSrc=setup.rll&EvtID=50000&ProdVer=10.50.1600.1&EvtType=0xDF039760%25401201%25401 This is the second error that occurs after clicking continue in the installer after the first error is generated TITLE: Microsoft SQL Server 2008 R2 Setup ------------------------------ The following error has occurred: SQL Server Setup has encountered an error when running a Windows Installer file. Windows Installer error message: The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Contact your support personnel for assistance. Windows Installer file: C:\Users\watto_uk\Desktop\In-Digital\Software\Microsoft\SQL Server 2008 R2\1033_ENU_LP\x64\setup\sqlsupport_msi\SqlSupport.msi Windows Installer log file: C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20110713_205508\SqlSupport_Cpu64_1_ComponentUpdate.log Click 'Retry' to retry the failed action, or click 'Cancel' to cancel this action and continue setup. For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft+SQL+Server&EvtSrc=setup.rll&EvtID=50000&ProdVer=10.50.1600.1&EvtType=0xDC80C325 These errors are generated from an ISO package downloaded from Microsoft. I have also tried using the web platform installer to install the express version instead but the SQL Server Installation fails with that also. The management studio installs fine but not the server. I have checked to make sure that the Windows Installer is started and it is. Cant seem to find an answer for this anywhere as all previous reported issues appear to be related to XP. I did have the express edition installed on the machine previously but uninstalled it to upgrade to the full version, I wish I hadn't now. Can anyone kindly offer any advice or point me in the right direction to stop me going insane with this? Any advice will be appreciated. Update======================= After digging a bit deeper ive located details of the error from the setup log file, i can also upload the log file if required. MSI (s) (E8:28) [23:35:18:705]: Assembly Error:The module '%1' was expected to contain an assembly manifest. MSI (s) (E8:28) [23:35:18:705]: Note: 1: 1935 2: 3: 0x80131018 4: IStream 5: Commit 6: MSI (s) (E8:28) [23:35:18:705]: Note: 1: 2337 2: 0 3: Microsoft.SqlServer.GridControl.dll MSI (s) (E8:28) [23:35:22:869]: Product: Microsoft SQL Server 2008 R2 Setup (English) -- Error 2337. The installer has encountered an unexpected error. The error code is 2337. Could not close file: Microsoft.SqlServer.GridControl.dll GetLastError: 0. MSI (s) (E8:28) [23:35:22:916]: Internal Exception during install operation: 0xc0000005 at 0x000007FEE908A23E. MSI (s) (E8:28) [23:35:22:916]: WER report disabled for silent install. MSI (s) (E8:28) [23:35:22:932]: Internal MSI error. Installer terminated prematurely. Error 2337. The installer has encountered an unexpected error. The error code is 2337. Could not close file: Microsoft.SqlServer.GridControl.dll GetLastError: 0. MSI (s) (E8:28) [23:35:22:932]: MainEngineThread is returning 1603 MSI (s) (E8:58) [23:35:22:932]: RESTART MANAGER: Session closed. Installer stopped prematurely. MSI (c) (0C:14) [23:35:22:947]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1 MSI (c) (0C:14) [23:35:22:947]: MainEngineThread is returning 1601 === Verbose logging stopped: 13/07/2011 23:35:22 ===

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  • LAN connection suddenly domain_not_set.invalid

    - by Liam Coates
    I went to work today - internet fine as always. Came back, dreaded yellow triangle. I can connect wirelessly like i am now on my tablet. Thats completely fine. But through LAN I get the domain_not_set.Invalid message if I renew my IP for example. It seems I just don't have a DNS. But I have literally not touched anything no ones even been in the house. Hows that happen? Any help on why only wireless works would be great, I am gonna buy a wireless adapter tomorrow for the interim but I would like to know why. Thanks.

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  • Apache Tomcat 6.0.29 startup causing Win XP SP3 reboot

    - by Liam
    Some of our Windows XP Developer machines die (black screen - no ping) when starting up Tomcat from a console. This only happens if the Tomcat debug console window is displayed (not minimised). When minimised, the startup / run is successful. I've checked for Tomcat logs and the crash sessions produce empty (zero bytes) tomcat log files. No system logs exist and no crash dump is created even though this is enabled in the Windows settings. The machine is dual screen and another machine with the same image has the same issue. The only clue is just before the crash, one of the monitors the system reports "Cannot display video mode 1280x1024" (approximate error, didn't write it down). Is there a way I can get Windows to produce log files of this crash session? Beyond running Tomcat as a service / minimised window, how can I fix (or even investigate)?

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