Machine Learning
- Instructor Andrew Ng, Standord AI Lab director
Monday, August 27, 2012
Tuesday, July 31, 2012
Tech Review: AI Study Notes: Monday, July 30, 2012
Artificial Intelligence: A Modern Approach: Third Edition
Stuart J. Russell
Peter Norvig
2010
Introduction
- Homo sapiens - man the wise
- intelligence
- AI tries to build intelligent entities.
Without know what intelligence is how can one know if they are building and intelligent system?
- thought processes, reasoning
- Thinking Humanly
- Cognitive modeling approach
- Psychology
- Thinking Rationally
- laws of thought
- logic
- behavior
- Acting Humanly
- fidelity to human performance
- Turing Test
- natural language processing
- knowledge representation
- automated reasoning
- new conclusions
- machine learning
- new patterns
- computer vision
- robotics
- Acting Rationally
- ideal performance or rationality
- agent
- comes from the Latin agere, todo
- limited rationality
Thursday, June 21, 2012
Tech Review AI: Wednesday, June 20, 2012
Cities using AI for pre-crime monitoring of surveillance videos
Tuesday, June 12, 2012
Tech Review AI: Tuesday, June 12, 2012
- Have listen to the course introduction
- listening to the Basic Text Processing -> Regular Expressions
- Regular expressions
- a formal language for specifying text strings
- regular expression disjuctions
- letters inside square brackets []
- pipe disjunction
- a|b|c is the same as [abc]
- ranges [A-Z]
- negations [^A-Z]
- ?
- previous character is optional
- .
- one charater
- ^
- begining of line
- $
- end of line
- \.
- use backslach to find special characters
- Kleene operators
- Stephen C Kleene
- * is 0 or more
- + is 1 or more
- non-alphabetics
- regexpal.com
- Type1 error false positive
- increasing accuracy or precision (minimizing false positives)
- Type2 error false negatives
- increasing coverage or recall (minimizing false negatives)
- Type1 and 2 conflict, antagonistic
- regular expressions play a surprisingly large role in NLP.
- regular expression used as features in classifiers for the hard NLP tasks
- Basic Text Processing -> Regular expression in practical NLP
- Christopher Manning
- Stanford English Tokenizer
- a deterministic
- Java Flexer
- {2,4}
- length between 2 to 4
Saturday, May 5, 2012
Tech Review AI: Friday, May 4, 2012
Repast Configuration XML Not Loading
- The problems is in using Java 7. Had to revert back to Java 6.
- Repast Windows install comes with Java 1.6_22
Problems with JOGL in Repast
Eclipse jogl.gar
where do I find the jogl binaries
where do I find the jogl.jar file
- http://stackoverflow.com/questions/6194824/where-do-i-get-the-jogl-jar
- http://jogamp.org/wiki/index.php/Downloading_and_installing_JOGL
- https://jogamp.org/chuck/job/jogl/476/
Economic Issues
Markets Equilibrium Price
Principles of Economics
Repast and Override annotation Preventing Compilation
Tech Review AI: Saturday, May 5, 2012
- PowerSim Studio
- We have 4 or 5 licences at work
- Not flexible
- If it was open source, Ethan would add modules to get the functionality we need.
- STELLA
- flight simulator?
- mentioned by Ethan
Open GL Issues in Installing Repast
- http://forums.gentoo.org/viewtopic-t-889032-view-next.html?sid=24c27140a1ba8df9c9fb4aa9c51a440e
- http://www.cs32s11.vxcv.com/discussion/156/noclassdeffounderror-javaxmediaopenglgleventlistener/p1
- this is the error I get with it is not installed properly for Repast
Writing fake online reviews? New Google algorithm will catch you out
Erica says some interesting work is being done on campus.
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