for a school project I am trying to make an android application that, once started, will perform a spectrum analysis of live audio received from the microphone or a bluetooth headset. I know I should be using FFT, and have been looking at moonblink's open source audio analyzer ( http://code.google.com/p/moonblink/wiki/Audalyzer ) but am ...
Hi, i ask myself if i should try to use a NoSQL database or a SQL Database. I have read a lot, but would like to hear some people who hav experience with NoSQL. My situation is as follows: We have a not so complex relational database schema. We do reasearch on recommender systems and therefore monitor the user interactions with a specifi...
Hi, I crawled some blogs for my project and extracted a few features, like length of the document, in links, out links. Each of these blogs talks about some specific subject and there can be numerous articles on each subject, and I need to decide at most one or two important blogs for each subject. How can I assign weights to these feat...
I'm looking for a java driven solution to a requirement for analysing sentences to log whether a key word was used positively or negatively. Ie The key word might be 'cabbages' and the sentence:- 'I like cabbages but not peas' And I'd like a java text analyser of some kind to log this as positive. Can the lucene (Hibernate-Search) li...
We have project that uses Analysis Services as it's datasource. To try to avoid having to create 100's of queries because of all the selection options we allow, we create our mdx queries with alot of switches and string concatenation. This is our "Data Access Layer". It is a beast to manage and the smallest mistake: missing spaces, m...
I have been using MATLAB for my work, but I have started learning Python lately. I employ statistical analysis, more precisely geostatistics, in my work. I was wanting to ask, from your perspectives, which one among the two languages is good for statistical analysis? What are the pros and cons, other than accessibility, for each? ...
Hello, I'd like to know how difficult it is to analyze and edit sound in android. My project would be a kind of DJ application. I think AudioTrack is the most appropriate library, right ? How does the few android DJ apps work to display the spectrum of the sound, apply effect, change the speed, mix ect ... Do they use a more powerful ...
I am trying to extract the prevailing bitrate of a video file (e.g. .mkv file containing a movie) at a regular sampling interval of between 1-10 seconds under conditions of normal playback. Kind of like you may see in vlc, during playback of the file in the statistics window. Can anyone suggest the best way to bootstrap the coding of s...
Hi guys, I have written some matlab code for image analysis that searches for clusters in an image and that builds an adjacency matrix for those clusters, discribing which clusters are touiching eachother in the image. I can use this adjacency matrix to derive a graph. For completion of my algorithm I would now have to mine that graph...
Hello, I need a little help on an image analysis algorithm in Java. I basically have images like this: So, as you might guessed, I need to count the lines. What approach do you think would be best? Thanks, Smaug ...
Hi, I was wondering if there is a tool to measure the resources needed to run an app? We have developed an app that runs fine on all modern computers, but I am curious about "how low can we go". The app in question is developed in .NET, so there might be some code analyzer or something, but I am more curious in general if there is a to...
Hello to everyone. Need to decide on which to use for Named Entity Recognition and sentiment analysis. Please provide in the suggestions and is the Java libraries provided by lingpipe good. (They have sample and tutorials need to try them.) has any one used both LingPipe, Lexalytics and are there good relevance in the result in both f...
Hi R users, I would like to know how I would go about performing image analysis in R. My goal is to convert images into matrices (pixel-wise information), extract/quantify color, estimate the presence of shapes and compare images based on such metrics/patterns. I am aware of relevant packages available in Python (suggestions relevant t...
I was wondering if there are any mapping and visualization software like Xanalys. I am actually looking at Xanalys Link Explorer that allows you to map out the associations between different objects from a database. Seems to be very useful for investigative kind of work. ...
I have some SQL thats getting run and it is taking to long to return the results / parse / display, etc. in a asp.net c# application. I have SQL Server Management Studio 2008 R2 installed to connect to a remote SQL Server 2000 machine. Is there a Query Analyzer or profiler I can use to see whats going on? I'm not sure if I'm sending too...
Hi, I was interested in seeing how my PS3 synchronised with its sixaxis controller. Whenever you want to use a new controller on the PS3, you have to pair it with the ps3 via USB. So i thought i'd try some usb sniffing to find out what goes on during the process (in the hope i may be able to emulate it with other devices). The only thi...
Hi All, I am reading Algorithms in C++ by Robert Sedgewick. Basic recurrences section it was mentioned as This recurrence arises for a recursive program that loops through the input to eliminate one item Cn = cn-1 + N, for N >=2 with C1 = 1. Cn is about Nsquare/2. Evaluating the sum 1 + 2 +...+ N i...
Hi All, I am reading algorithms in C++ by Robert Sedwick it was mentioned as follows Sequential search in an ordered table examines N numbers for each search in the worst case and about N/2 numbers for each search on average. This result follows from assuming that the search is equally likely to terminate at any ...
Q1. In my university studies of object-oriented modelling and design they recommend thinking about what an object can do for its method, and what its responsibilities are for its attributes. All attempts at clarification have resulted in further confusion. This tends to generate a class diagram with actors who have all the actions, and ...
Hi, I'm looking for a tool that can compare codes in two different programs. Actually, students in my organization often copy/paste assignments which are mostly in C/C++. Some of them are clever enough to rearrange the code sequence and change the variable names. Thats what I want to catch. I do remember a former colleague mentioning ab...