Probabilistic Graphical Models About the Course What are Probabilistic Graphical Models? Uncertainty is unavoidable in real-world applications: we can almost never predict with certainty what will happen in the future, and even in the present and the past, many important aspects of the world are not observed with certainty. Probability theory gives us the basic foundation to model our beliefs about the different possible states of the world, and to update these beliefs as new evidence is obtained. In this class, you will learn the basics of the PGM representation and how to construct them, using both human knowledge and machine learning techniques; you will also learn algorithms for using a PGM to reach conclusions about the world from limited and noisy evidence, and for making good decisions under uncertainty. Course Syllabus Topics covered include: There will be short weekly review quizzes and programming assignments (Octave/Matlab) focusing on case studies and applications of PGMs to real-world problems:
Ruby in Twenty Minutes Introduction This is a small Ruby tutorial that should take no more than 20 minutes to complete. It makes the assumption that you already have Ruby installed. (If you do not have Ruby on your computer install it before you get started.) Interactive Ruby Ruby comes with a program that will show the results of any Ruby statements you feed it. Open up IRB (which stands for Interactive Ruby). If you’re using macOS open up Terminal and type irb, then hit enter. irb(main):001:0> Ok, so it’s open. Type this: "Hello World" irb(main):001:0> "Hello World" => "Hello World" Ruby Obeyed You! What just happened? irb(main):002:0> puts "Hello World" Hello World => nil puts is the basic command to print something out in Ruby. Your Free Calculator is Here Already, we have enough to use IRB as a basic calculator: irb(main):003:0> 3+2 => 5 Three plus two. irb(main):004:0> 3*2 => 6 Next, let’s try three squared: irb(main):005:0> 3**2 => 9 In Ruby ** is the way you say “to the power of”. Ok, wait, what was that last one?
Natural Language Processing Why's (Poignant) Guide to Ruby Efficient JavaScript Traditionally, a Web page would not contain much scripting, or at least, not much that would affect the performance of that Web page. However, as Web pages become more like applications, the performance of scripts is having a bigger effect. With more and more applications being developed using Web technologies, improving the performance of scripts is becoming increasingly important. With a desktop application, a compiler is normally used to convert the source into the final binary. The compiler can take its time, and optimize as much as possible for good performance of the final application. Browsers are fairly good at achieving this, and Opera has one of the fastest scripting engines of any current browser. This article will show several simple changes that can be made to improve the performance of your Web applications. Quick Tips ECMAScript Document loading ECMAScript Avoid using eval or the Function constructor Rewrite that eval function getProperty(oString) { return test.prop[oString]; }
Ruby Quiz Python for the Web The theme music for this blog post is: Air - Playground Love. Python is the best language in the world for interacting with the web, and I'm going to show you why. This article will give an extremely high level overview of how to use python for the web. There are many ways you can interact with the web using python, and this post will cover all of them. Interacting with Websites and APIs Using Python The single best package for interacting with the web using Python is 'Requests' by Kenneth Reitz. First, you'll need to install it. Once you have pip installed, run: pip install requests And now you have Requests installed! The two methods you'll need the most are GET and POST. First let's take a look at GET. That's it! Now let's look at a slightly more complicated example. Here, YOURUSERNAME and YOURPASSWORD will be send as login credentials to the server. Now, let's try a POST request to send some data TO the server. Processing JSON in Python pip install simplejson Scraping the Web Using Python
Ruby Learning Tutorial RubyLearning.com Helping Ruby Programmers become Awesome! Ruby Study Notes: TOC Core Ruby Programming Introduction InstallationWhat is Ruby? Note: The Ruby Logo is Copyright (c) 2006, Yukihiro Matsumoto. © 2006-2017 RubyLearning.com - A Ruby Tutorial Page Updated: 1st Jan. 2016 | Design: Erwin Aligam | Valid: XHTML | CSS Home | Privacy | Sitemap
YUI3 « Triptych YUI3 is a modern javascript library that allows you to build cross-browser applications without having to worry about all of the issues you might run into with low level javascript coding. It provides a library of utilities as well as a host of best practices for web development. Needless to say I’m a big fan of YUI and I’ve written several articles about it over the past year or so. Here’s a list of those for your reference.Introduction to YUI: YUI Hidden Gems: Make it with YUI: Build a Simple Ticker in YUI Other YUI Articles: YUI Articles from around the web: YUI3 Quick Tip: Adding Your Own Awesome There are still many articles even of my own blog I’ve not listed here as of yet (so busy!)
PHP for Beginners: Building Your First Simple CMS By Jason Lengstorf On CMS, php #The Magic of PHP + MySQL It's safe to say that nearly every website that's up-to-date these days is using some form of content management system (CMS). While there are a ton of great free options that provide us with a CMS to power a website (WordPress, Drupal, etc.), it doesn't hurt to peek under the hood and get a feel for how these systems work. To get our feet wet as back-end developers, we'll be creating a simple PHP class that will: Create a databaseConnect to a databaseDisplay a form with two fieldsSave the form data in the databaseDisplay the saved data from the database Download Files This class is intended to give you a feel for how PHP and MySQL interact together, and to show the basics of a CMS. #Building the Class Our first step is to simply lay out the class in a file named 'simpleCMS.php' so we have a road map to work with. As you can see, we're creating one class with four variables and five methods. #The Variables #Build the Database <! <? #Related
Scalable and Modular Architecture for CSS I have long lost count of how many web sites I’ve built. You would think after having built a few hundred of them I would have discovered the “one true way” of doing it. I don’t think there is one true way. What I have discovered are techniques that can keep CSS more organized and more structured, leading to code that is easier to build and easier to maintain. I have been analyzing my process (and the process of those around me) and figuring out how best to structure code for projects on a larger scale. The concepts were vaguely there with the smaller sites that I had worked on but have become more concrete as a result of working on increasingly complex projects. SMACSS (pronounced “smacks”) is more style guide than rigid framework. Inspiration In trying to learn more about what does and doesn't work in maintaining larger projects, I looked at how others were trying to solve similar problems. What’s in here? Now get started and dive in!
Learning jQuery - Tips, Techniques, Tutorials 15 Sites for Learning and Mastering SEO We recently compiled a list of some of the best social media blogs on the web. Although maintaining healthy relationships and building a strong network on the web is crucial, search engine placement certainly can’t be ignored either. We all know the impact of search engines on our daily traffic. It can be a make or break deal. Here are 15 SEO blogs that you should read if you are interesting in mastering SEO: 15 SEO Blogs You Should Read Some of these blogs will help you learn the basics of how search engines work, and others will keep you up-to-date on what’s new in search space. Go ahead and add these blogs to your feed reader and get ready to dominate search engines with rankings that will be hard to beat. Matt Cutts: Matt Cutts joined Google in 2000 and currently leads Google’s webspam team. Conclusion Whether you are focused primarily on social media or search, just remember to put a bit of work into both. Your Turn To Share Image by timusan
The Unix Command Line: Text Files By Gordon Davisson Copyright (c) 2002, Westwind Computing inc. Working with Text Files: more and less - display the contents of a text file, one screenful at a time (hit the spacebar to get the next screen). Note that this only works well with plain text files, not Word files, RTF's, PDF's, or anything else that contains formatting information. less also allows you to go backwards (type "b") in the file. In either one, type "h" for more detailed help. Examples: more /etc/inetd.config print the inetd.conf file to the terminal, one screen at a time. ps -ax | more use the ps command to generate a list of processes running on the system, and pipe them to more to display them one screen at a time. grep - search the contents of a text file, and print lines containing a given word or pattern. pico - edit the contents of a text file. vi and emacs - other text editors provided with the standard OS X installation. tail - print the last few lines of a text file. Text File Format Compatibility: