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Closed 10 years ago.
I came across the data mining technique AdaBoost but i can not find much information regarding how it works or any examples i can go through, can someone please shed some light in this area?
Also i would like to give prediction and exploration of data a try, does anyone have any examples?
This tutorial explains the idea very well. At the end of the tutorial, in section Problems, item 4 points you to a simple classification problem which you can try, and item 5 points you to the code of the implementation of the Viola-Jones algorithm in the
OpenCV library. Its object detection framework employs a variant of the AdaBoost to both select the best features and to train classifiers that use them.
Related
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Closed 9 years ago.
Is there any reason that I absolutely should not write my own delta compression library (in C)? I'm working on proprietary project and cannot include any GPL'd code (and most others in fact).Being not an expert in binary data compression, I'm wondering if I do go this way, where should I start? All data involved is highly patterned binary with roughly the same length (~100K).
Sorry for the rather vague question.. Thanks in advance for any insight
Zlib is freely available and reusable, even in proprietary software. (Here is the license.) There is no reason to try and recreate it.
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Closed 9 years ago.
Is there any easy resource available online or a book which would allow a complete newbie how the database normalization process works and what one should do to perform the transformations on a given database leading it from 1NF to 5NF through all the in-between?
From my research, it seems that the Wikipedia article seems to be the closest to what I'm looking for but is there anything even easier?
This highly depends upon your taste. But I have found that the course in class2go offered by Stanford is quite good. It has a fairly good explanation of normalization up until NF4. For a complete newbie I think this would be quite useful.
You have to sign up but the material is supposed to be there:
http://class2go.stanford.edu/db/Winter2013
Also have you seen this?
http://www.bkent.net/Doc/simple5.htm
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Closed 10 years ago.
I found a lot. But which one is the best? And why? I didn't find yet anything really complete and centralized in one good article or documentation. At least a good book? Thanks.
Our (Riptano's) Cassandra documentation is probably the best one-stop resource: http://www.riptano.com/docs
A good complement from the ASF wiki is http://wiki.apache.org/cassandra/ArticlesAndPresentations.
The Cassandra High Performance Cookbook is the most recent book. It has a how-to format but along the way documents many of the features.
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Closed 10 years ago.
I'm working on some charting, and am currently using the Silverlight Toolkit. At the moment the line series links all the datapoints with straight lines, making for a fairly jagged display.
Is there a way for the chart to apply smoothing to the line series?
If not, does anyone have any other suggestions? Are there other charting packages which you can suggest which would offer better functionality?
Thanks.
I've found these charts from Visifire that fit splines through the data points. Though they are paid for unless you go with the "Community" license, but you might not agree to it's terms
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Closed 9 years ago.
I'm writing a windows C# application which I wish to use data grid views, but unable to find a good tutorial on to take complete control of the datagrid eg: add columns, add data etc.
I like some of the tips provided here
You can take a look here: http://msdn2.microsoft.com/en-us/library/k39d6s23.aspx
But the best one might be this: http://www.macoratti.net/08/08/c_pdgv1.htm
I think you can get the idea from the code, since the comments are in portuguese (you can try google translate).
I highly recommend using an MVC/P pattern for implementing DataGridView in Winforms - it makes life a lot easier in the long run, even though it may seem a lot of work to do up front.
Selecting a MVC/MVP Implementation for a Winforms Project