Good free resources for learning set theory [closed] - set-theory

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I'm looking to learn set theory. My coding history has been primarily practical and I'd like to move more into the theory side of things. I think I understand the basic concepts of set theory but I know nothing about its applications, its notations, and operations you can perform on sets.
Any resources that could point me in the right direction would be great!

Set as a Data Structure
General theory
Set Theory for Computer Science
What practical applications does set theory have?

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Anonymizing and masking of text data [closed]

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I have a set of emails which i need to anonymize before I can do any analysis on it. Since sensitive data may be disclosed in the emails, like referring to people, or providing phonenumbers etc.
The tools i have found so far, only uses tables, and mask this, which is quite straight forward to do myself, but it does not solve my problem.
So i am looking for a tool or library, that can help me solve this. I would assume it need to do some Natural language processing in order to analyze how the text is built up, and where refferences to people are being mentioned. I would also appreciate any good articles in this area

Higher-Level design tools for databases [closed]

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I need to design a database schema for a set of data and I watched a Coursera video where the professor talks about "Higher-Level Design Tools" but doesn't say any example.
I'm putting a link for my screenshot below so you can understand what I am talking about. My question is: how do theses tools work? Are there good examples?
http://oi60.tinypic.com/34qjpd3.jpg
I think that the professor is talking about design tools such as Sybase PowerDesigner.
These tools allow you to design databases in different levels of abstraction from high level (Conceptual Data Model) to low level (Physical data model), they also provide tools for generating diagrams and even the final code depending on your database type.

Object Oriented Design Practice Problems [closed]

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I've been developing almost exclusively C-code for the past few years. I'm currently looking to brush up on my Object Oriented Design skills. Can anyone recommend any resources that have a decent set of short object-oriented design problems with some possible solutions/analysis? I'd ideally like something that was a small enough problem to sketch out and design in during a question in an interview that can be completed/analyzed in 15-30 minutes.
Thanks!
Look at my answers to the below two posts
Workbook on object oriented design (object model domain, system sequence diagrams, interaction diagrams)
Software Design questions for Software Engineer Interview

Open source alternative to Mosek? [closed]

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Is there an open source alternative to Mosek?
Basically, I'm looking for large scale convex optimization solver packages.
Thanks!
EDIT:
Forgot to mention earlier, problem is non-linear; mostly quadratic, but occasionally may need non-quadratic constraints + non-quadratic objective
There are many packages, mostly with Matlab interfaces, like SDPT3, SeDuMi, and CVX. I believe the first two have their backends in C. The websites of these projects link to other packages. What language did you have in mind?
Does GLPK suit you?

Web design side decoration [closed]

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I was wondering if anyone know of some good tutorials on how to design and code side decorations(or whatever right term there is) like the ones on these website:
http://www.buckle.com/
I'm referring to the spring yellow and red flowers/butterflies
Thanks
This is a pretty good place to start...
http://www.webdesignerwall.com/ (I have had a quick look through and ordered these more to less relevance)
http://www.webdesignerwall.com/tutorials/how-to-css-large-background/
http://www.webdesignerwall.com/tutorials/illustrator-abstract-vector-art/
http://www.webdesignerwall.com/tutorials/design-process-of-the-phoenix/
http://www.webdesignerwall.com/tutorials/photoshop-hand-drawn-design/
http://www.webdesignerwall.com/tutorials/photo-strip-photoshop-tutorial/
http://www.webdesignerwall.com/tutorials/css-decorative-gallery/
http://www.webdesignerwall.com/tutorials/design-watercolor-effect-menu/
You might have flick through a couple of pages but it is really good and you will find plenty of other stuff too.