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  • Sentiment analysis with NLTK python for sentences using sample data or webservice?

    - by Ke
    I am embarking upon a NLP project for sentiment analysis. I have successfully installed NLTK for python (seems like a great piece of software for this). However,I am having trouble understanding how it can be used to accomplish my task. Here is my task: I start with one long piece of data (lets say several hundred tweets on the subject of the UK election from their webservice) I would like to break this up into sentences (or info no longer than 100 or so chars) (I guess i can just do this in python??) Then to search through all the sentences for specific instances within that sentence e.g. "David Cameron" Then I would like to check for positive/negative sentiment in each sentence and count them accordingly NB: I am not really worried too much about accuracy because my data sets are large and also not worried too much about sarcasm. Here are the troubles I am having: All the data sets I can find e.g. the corpus movie review data that comes with NLTK arent in webservice format. It looks like this has had some processing done already. As far as I can see the processing (by stanford) was done with WEKA. Is it not possible for NLTK to do all this on its own? Here all the data sets have already been organised into positive/negative already e.g. polarity dataset http://www.cs.cornell.edu/People/pabo/movie-review-data/ How is this done? (to organise the sentences by sentiment, is it definitely WEKA? or something else?) I am not sure I understand why WEKA and NLTK would be used together. Seems like they do much the same thing. If im processing the data with WEKA first to find sentiment why would I need NLTK? Is it possible to explain why this might be necessary? I have found a few scripts that get somewhat near this task, but all are using the same pre-processed data. Is it not possible to process this data myself to find sentiment in sentences rather than using the data samples given in the link? Any help is much appreciated and will save me much hair! Cheers Ke

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  • can ServiceLocator.Current.GetInstance return null?

    - by mauricio076
    I have this piece of code (or similar) in many of our views: private IEventAggregator eventAggregator; Constructor() { eventAggregator = ServiceLocator.Current.GetInstance<IEventAggregator>(); ... } I read from this post that ServiceLocator.Current can throw NullReferenceException (bad thing on a constructor) but I was wondering if the GetInstance<() method can return null (or some other inconsistent object) making eventAggregator dangerous to use later in other methods. NOTE: I'm quite new to MVVM and WPF

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  • How to calculate Least Signficant Byte in Ruby

    - by Seth Archer
    I'm sending a byte array to a piece of hardware. The first 7 bytes contain data and the 8th byte is a checksum. The 8th byte is the Least Significant Byte of the sum of the first 7 bytes. Examples that include the correct checksum. The last byte of each of these is the checksum 200-30-7-5-1-2-0-245 42-0-0-1-176-0-148-39 42-0-0-3-177-0-201-118 How do I calculate the checksum? Thanks, Seth

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  • Should we be using JQuery for Mobile AJAX Page Navigation?

    - by Brad
    I am developing a mobile site that will load page content using AJAX if JavaScript is enabled. I have been using the JQuery load() functionality to load page contents from other static pages but I feel I am wasting precious bandwidth loading the entire JQuery library when I'm only using a small piece of it. With this said should we be avoiding libraries when only using small pieces of them?

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  • Set ActiveTabIndex on Ajax TabContainer inside CompositeControl

    - by MADCookie
    I am creating a CompositeControl in VB ASP.NET. My control has an Ajax TabContainer with several TabPanels. I need to code it so a value on the querystring can set the container's ActiveTab. Regardless of the querystring piece of this issue, in my CreateChildControl code, I am setting the ActiveTabIndex to a valid index position, but the UI still has the index 0 as active. Any tips? Any help?

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  • Mimic Windows' 'Run' window in C#/.NET

    - by chaiguy
    I would like to mimic the Run command in Windows in my program. In other words, I would like to give the user the ability to "run" an arbitrary piece of text exactly as would happen if they typed it into the run box. While System.Diagnostics.Process.Start() gets me close, I can't seem to get certain things like environment variables such as %AppData% working. I just keep getting the message "Windows cannot find '%AppData%'..."

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  • Calling ASP.NET MVC Controller explicitly via AJAX

    - by effkay
    I know that I can use following piece of code to refresh a div: <%=Ajax.ActionLink( "Update", "Administration", new AjaxOptions { UpdateTargetId = "grid", LoadingElementId = "grid-wait" } ) %> But this creates a link; user will have to click on it to get the view refreshed. How can I make it automatic, i.e., like say if I want the grid to be refreshed after every five seconds?

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  • Firefox innerHTML Bug?

    - by M. Singleton
    I have a simple piece of HTML <p id="skills">Skills</p> in Firefox 3.6.3 when I call (with JQuery): $("#skills")[0].innerHTML = "some new text" Firefox renders it as <p id="skills"><a xmlns="http://www.w3.org/1999/xhtml">some new text</a></p> Where in the world is that link coming from?? (note the same thing happens by calling $("#skills").html("some new text") with JQuery)

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  • JavaScript window resize

    - by Happy
    I have piece of javascript code, which should process when the browser window is resized. var resize=$('div.resize',$(this).parent())[0]; resize.style.marginRight=(resize.offsetWidth-$(this)[0].offsetWidth)+'px' Tryed this stuff (doesn't work): var resize=$('div.resize',$(this).parent())[0]; window.onresize = function(event) { resize.style.marginRight=(resize.offsetWidth-$(this)[0].offsetWidth)+'px' } Thanks.

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  • Force repaint after button click

    - by coubeatczech
    consider this piece of scala swing code detail.reactions +={ case ButtonClicked(but) = detail.contents += new Label(but.text) detail.background = new java.awt.Color(0,255,0) } the detail is of FlowPanel type. When the button is clicked, the color is instantly repainted, but the Label is not. It gets visible as I click the area. How can I force the detail to repaint its contents after a click?

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  • Changing array values in a VBA dictionary

    - by Pawan Jain
    Hi I have a piece of code that does not seem to do what it is expected to do. VBA Arrays are mutable by all means, but it seems that when they are stored into a Dictionary as values of some keys, they are not mutable anymore. Any ideas? Sub foo() Dim mydict As New Dictionary mydict.Add "A", Array(1, 2, 3) MsgBox mydict("A")(1) ' The above shows 2, which is fine mydict("A")(1) = 34 MsgBox mydict("A")(1) ' The above also shows 2, which is not fine End Sub

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  • UISearchBarBackground Class

    - by Jim Bonner
    I am using the following piece of code to hide the background on a UISearchBar: [[searchView.subviews objectAtIndex:0] setHidden:YES]; Pretty simple, but I worry about hard coding a position in a subview list. So I went looking for the UISearchBarBackground.h file and cannot find it. Does any know where the definition is hiding?

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  • High level macro not recognized - Beginner MASM

    - by Francisco P.
    main proc finit .while ang < 91 invoke func, ang fstp res print real8$(ang), 13, 10 print real8$(res), 13, 10 fld ang fld1 fadd fstp ang .endw ret main endp What's wrong with this piece of MASM code? I get an error on .endw. I have ran some tests to ensure myself of that. Assembler tells me invalid instruction operands. Thank you for your time!

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  • Splitting a filename into words and numbers in Python

    - by danspants
    The following code splits a string into a list of words but does not include numbers: txt="there_once was,a-monkey.called phillip?09.txt" sep=re.compile(r"[\s\.,-_\?]+") sep.split(txt) ['there', 'once', 'was', 'a', 'monkey', 'called', 'phillip', 'txt'] This code gives me words and numbers but still includes "_" as a valid character: re.findall(r"\w+|\d+",txt) ['there_once', 'was', 'a', 'monkey', 'called', 'phillip', '09', 'txt'] What do I need to alter in either piece of code to end up with the desired result of: ['there', 'once', 'was', 'a', 'monkey', 'called', 'phillip', '09', 'txt']

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  • Cannot convert from string exception

    - by swetha
    I got an exception sayin, CollectionConverter cannot convert from System.String. sample piece of code : TypeConverter type1 = TypeDescriptor.GetConverter(somemethodtype); Obj = typeConvert.ConvertFromString(result["xxx"].ToString()); can someone tell me y i get dis exception and how to resolve?

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  • Django unique_together error and validation

    - by zubinmehta
    class Votes(models.Model): field1 = models.ForeignKey(Blah1) field2 = models.ForeignKey(Blah2) class Meta: unique_together = (("field1","field2"),) I am using this code as one of my models. Now i wanted to know two things: 1. It doesn't show any error and it saved an entry which wasn't unique together; So is the piece of code correct? 2. How can the unique_together constraint be be validated?

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  • Convert PHP code to C#

    - by Rob
    Is there a web site or tool that will convert a piece PHP code to C#? something similar to http://converter.telerik.com/ or http://www.developerfusion.com/tools/convert/csharp-to-vb/

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  • How to speed up loading the splash screen.

    - by AngryHacker
    I am optimizing the startup of a WinForms app. One issue I identified is the loading of the splash screen form. It takes about half a second to a second. I know that multi-threading is a no-no on UI pieces, however, seeing how the splash screen is a fairly autonomous piece of the application, is it possible to somehow mitigate its performance hit by throwing it one some other thread (perhaps in the way Chrome does it), so that the important pieces of the application can actually get going.

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  • Div positioning on a canvas with arrows bindings

    - by ideotop
    I'm searching for a little piece of javascript that can attach to a div (in data-x data-y attributes for example) the x,y coordinates of a draggable div. And then be able to draw arrows between them (using a data-targetid attribute?). If the solution can look like a simple version of graphview, jsPlumb or vizster but without the complicated library, and only in javascript/html

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  • Doubts in ada language

    - by maddy
    HI all, I am a beginner in the ada language.I have an short piece of code.Can anyone please tel me what does it mean? type Myarr_Type is array (Character) of Character; Myarr : Myarr_Type; C1 : character := character'first; C2 : character := character'last; My question is 1)What does C1 and C2 contain according to the above code? Please do excuse if this is really silly.I dont have an ada compiler to check the contents of this variable Regards Maddy

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  • Cross-Domain Cookie Problem

    - by Frederick
    Hi Guys, I have a domain A.com [my website] and a remote website B.com which integrates an iframe from my domain [A.com] with a piece of javascript. I want to share cookies across these domains [within the iframe]? How would I go about doing this so it works properly? I thought A.com and B.com are in the same-origin policy ?

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