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Firstly, I realise that this is a very similar question to this one: Which are the good open source libraries for Collective Intelligence in .net/java?
... but all the answers to that one were Java centric so I am asking again, this time looking more for .Net (idealy C#) ideas.
A little background; I recently read Toby Segran's excellent book on CI, and I just got hold of Satnam Alag's book (which I am sure is also excellent, but I have only just opened it). These are Python and Java centric, I don't have any trouble reading the code samples, but as I am a C# developer it would be fun to play with some of these ideas in my native language. I've had a search of the web and SO and not come up with too much. In a way this is great news, maybe I could port something to .Net (suggestions welcome), but I'd also really like to take a look at any existing projects before I do this.
So, are there an CI fans out there working in .Net with OS projects, have I missed some glaringly obvious and interesting books/sites/blogs?
I realise CI is a pretty broad field, so to narrow it down a little I am primarily interested in the clustering / prediction /recommendations areas, but am open to other ideas.
Edit: Just spotted this book about to be published by Manning which may interest CI fans: Algorithms of the Intelligent Web.
Edit Clarification in response to comment by Moose; what I am looking for really is libraries, frameworks or larger-scale projects (idealy OS) that use CI techniques with .Net. Code samples are great, but as Moose said in his comment it is easy enough to take Java examples and port them. For example, there is an interesting looking project written in Java called WEKA, there is no reason I can't use this and experiment with it, I was just curious to know if there were similar things going on in .Net. I have just been browsing info on Lucene and I see that there is a C# port of that, so that's a start... are there any more out there?
Edit This is not C#, but it is .Net; Robert Pickering has started collection F# CI resources here. Looks interesting, but I'm still looking for C# info too.
Here's a link for a slope one predictor for rating-based collaborative filtering:
C# Implementation of Slope One
Microsoft Research ( full disclosure: I work at Microsoft, though not in the group that released this tool ) has just released a machine learning library in .NET called Infer.NET.
link text
You might want to check it out.
This library has:
Supervised
Perceptron
Kernel Perceptron
KNN
Decision Trees
Unsupervised
Hierarchical Clustering
KMeans
It is called Machine Learning for .NET.
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Is there an implementation of the fix protocol running under mono (either free or commercial) ?
I found the following ones, but none indicates if the code it's mono compatible :
QuickFix
VersaFix
Onixs
B2Bits
RA-Cheetah
I tried the 2 open sources solutions :
QuickFix doesn't work on Mono because the .net bindings are developed in C++/CLI, which is not supported by Mono.
VersaFix however does run under mono without any changes, and its performances are quite similar under both platforms.
One possible solution: http://www.fixprotocol.org/discuss/read/adec4479
Other than this, there is nothing specifically designed that I know of, but it does look like each of the engines you mentioned does have a separate forum or mailing list you could try.
I can tell you that the way QuickFix is designed can be a real pain due to the way is uses identical classes in separate namespaces for each version of FIX.
Sorry dont have a better answer, good luck.
I suggest using the MoMA tool provided by http://www.mono-project.com/MoMA. I took the first one you specified "QuickFix" and downloaded the Binary version and scanned it with MoMA. The result was 273 Method calls that are not implemented.
It may sound like a lot but just like compiler errors, you fix a couple of things and the number goes down fast, also you have good odds that the parts you need will be fine and with the source for QuickFix available you may be able modify the code as needed or just throw some try{...}catch wrappers around those problem functions that you do need to use.
Of course you can try the same thing on the other available products, I just tried the first one. I believe MoMA will also work on obfuscated code, so you could test it on trial versions too.
I'm looking into Quickfix/N, which claims to be an open-source native .Net port of Quickfix, without native C++ bindings. In fact the API looks very similar to Quickfix/J (The java port). I will update this post if I find it not to be Mono-compatible.
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I've decided to start learning C#, but all the tutorials I can find are very dry and speak to the reader as if the reader is a machine.
How about some tutorials that talk to me like I'm a human?
This is about as friendly an introduction as I could find
I'd also have a look over Head First C# if I were you
When I went to a training course by Microsoft to learn C#, I received a complimentary copy of Microsoft Visual C# 2008 Express Edition: Build a Program Now! by Microsoft Press, and actually found it a pretty pleasant read.
I agree with the rest that you're more likely to find 'humanized' tutorials in books than online. I've read so many tutorials myself and know what you mean when you say they're dry.
I would recommend the books of wrox and O'reilly. They are very reader friendly, ands very good.
They explaina large scala of c# in a very understandable manner. I believe a book is better then a tutorial, because the concepts are linked together so it is easier to understand.
One of the best books for beginners I know is head first
In that case probably the best tutorial source would be a book. The tutorials you will find online are very generalized and usually intend to teach the reader how to accomplish a specific task. The worst thing about online tutorials is the fact that those are not structured. Therefore, as you go, you can get confused on what to learn next.
I would recommend starting with Pro C# 2010 and the .NET 4 Platform, Fifth Edition by Andrew Troelsen. It starts with the basics and goes on to more complex elements in a very structured way, so you learn step-by-step. You can also try tackling C# in Depth by Jon Skeet - it is one of the best books you can currently find on C#.
One more thing - the best way to learn a language in my opinion is not by tutorials but by having small tasks and trying to accomplish them. For example, you want to learn how to write to a text file. You research this topic and eventually you find out more about the whole process and why it works the way it does. The syntax understanding comes with this as well.
I found this Book a very good and gentle introduction to C#.
C# Yellow Book
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see also "Any tools to check for duplicate VB.NET code?"
A friend of mine only has access to the Express editions of Visual Studio and I am trying to help him refactor to remove a lot of duplication.
You could take a look at Simian or DuplicateFinder. Neither have a dependency on the IDE, although you can integrate Simian quite easily.
Clone Detective appears as though it might work for you. I haven't used it before, but I stumbled across it on codeplex this week.
Your friend should take a look at Gendarme, a FOSS and cross-platform alternative to Microsoft's FxCop/Code Analysis which is part of the Mono project. It includes rules that check for duplicated code.
Try Atomiq:
Atomiq Code Similarity Finder is a tool for developers to find and eliminate duplicate code. It is designed for .NET developers, but works equally well for developers of other languages and even web designers!
Atomiq works with a wide variety of source code:
We currently support C#, VB.Net, ASPX, Ruby, Python, Java, C, C++,
ActionScript, and XAML, with more extensions on the way soon. It is
the perfect companion tool for someone who updates their code
infrequently and can't possibly remember everything in it or for a
team of 2 or more developers working on the same project that don't
know everything in it since they didn't write it all themselves.
Eliminate similar code
(and the banging your head against the wall that comes with it) Atomiq
doesn't just find exact matches, it finds similar code. It ignores
"fluff" like whitespace, string content, curly braces, comments and
using/import statements so you can find the duplicate code that causes
problems. In VB.NET, it will also ignore lines that contain only
"Next", "End While", "End Try", "End If", "End Property", "End Get"
and "End Set".
More as fyi, since you mentioned 'express edition' you might need to look for something that would work outside of VS, since I don't believe the express editions support plugins
See our CloneDR, which operates on many langauges, including C#.
EDIT October 2010: VB6, VBScript and VB.net added as languages supported by CloneDR.
There is no specific support for MS IDEs, but it operates on a simple list of source files, and produces a nice HTML report, so not much integration is needed. See sample reports at link.
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Can anyone direct me to a smallish C# application that would be symbolic of the "right way" to design a program? I'm looking for a relatively simple (potentially trivial) program from which to analyze and learn.
The application should have a relatively trivial problem to solve and should solve it in a rather straight-forward way while showing off best practices/good object oriented design.
I've been studying C# rather a lot of late, and while I'm becoming confident in my understanding of parts of the .Net framework and the C# syntax, I'm having difficulties with the general concept of design and how a project fits together.
Thanks for any sources you can provide!
There are plenty of projects on this site:
http://www.codeplex.com/
First, take a look at the previous question on this topic. It's at https://stackoverflow.com/questions/143088/open-source-c-projects-that-have-very-high-code-quality-to-learn-from.
To that list I would add:
ASP.NET MVC Storefront (MVC
reference)
SubSonic
Rawr (good Windows Forms app)
All of these are on Codeplex.
A great project that is object oriented and uses best practices is SharpDevelop. You can download the source here: http://www.icsharpcode.net/OpenSource/SD/Download/. It's actually an IDE, so you can use it to write your code too.
I downloaded the source, loaded it up in Visual Studio, compiled it, and ran it in Debug mode... all in about 5 minutes without doing any special setup!
The only catch is that the solution itself is not very small, but is broken into a lot of small projects, so that is why I am recommending it.
You can download something like BlogEngine. If you download the full source version you can set break points and walk thru the code and see how they implement things.
Otherwise there are a ton of projects on codeplex.
Microsoft has a great library of this stuff:
ASP.NET Quick Start Tutorials
ASP.NET Starter Kits and Community Projects
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What books would you guys recommend if one has been a java developer for years and is now trying to take the c#/asp.net route?
First read this whitepaper:
C# From a Java Developers Perspective
Then, you can move onto books that cover the .NET framework, as you'll see the langauges differences are very quick to learn.
CLR Via C# is a great book for C# for people with experience programming. Especially experience in other managed languages
I have recently done exactly this and found the two most valuable books to be:
CLR via C# by Jeffrey Richter. Very well written and gives a great insight into the .net runtime - lots on the concepts you will already know from java such as garbage collection, threading, generics, etc. Plus really good in depth coverage of c# constructs like delegates and events that don't come with java (yet).
and
Pro C# and the .net 3.5 Platform by Andrew Troelsen. This is much more of a general text on the .net ecosystem. It has an excellent core language section, but then also gives a really good overview of the major libraries and apis - WPF, WCF, ASP.net, etc.
Those should provide you a solid foundation and are both pitched perfectly for the experienced programmer. After that, you'll probably end up looking for something more specific to the technology you are working in - a detailed ASP.net book in your case - but I constantly refer to both of these, so it is money well spent imho.
I find
Pro C# with .NET 3.0, Special Edition
by Andrew Troelsen
Apress © 2007 (1238 pages)
ISBN:9781590598238
to be an excellent book.