These are some programs and that I wrote for personal use. They are FREE for non-commercial use. I believe that they have almost no commercial value, but in case that someone need them for commercial use, please contact me first.

Research Related

• LIBSVM Extensions, 2003-2007, many extensions or scripts for LIBSVM (a powerful SVM toolbox).
• Large-Margin Thresholded Ensembles for Ordinal Regression, 2006-2007.
• Generic AdaBoost in MATLAB, Version 0.1, 2005, a simple implementation of the AdaBoost classifier with gradient descent view. A line search is used for the function weights, which can hence be applied to any weak learner (in addition to binary ones). The release comes with the decision stump weak learner as an example.

Web Related

• eVote, July 2004, a PHP program that does a simple eVote. Used in Association of Caltech Taiwanese (ACT) name referendum.
• PS/PDF to HTML, January 2002, a CGI program that runs gv to translate pdf/ps files to png and plug the png in html to view it on the web. It is useful when there is no pdf/ps viewers. The program utilizes CGI-LIB.
• Military Calendar, October 2001, a program using Java Script to calculate the duration of compulsory military service, Chinese link only.

Shell Scripts

• Permute, June 2005, demonstrates how to use bash to permute some strings.
• Truncate CR, November 2001, when putting a DOS text file to UNIX systems using binary transmission, the extra CR's cause several problems. This script is for bash and uses tr utility to truncate these CR's.
• HTML mail, June 2001, a script that use sendmail to mail an html file encoded in simplified Chinese(GB) so that is would be directly viewable in IE.

Matlab Programs

• assert.m, September 2004, use assert('equation') to assert that the equation goes to true.
• Simple code for Self Organization Map (Vector Quantization), October 2004, see README inside.

Scheme Programs

• Some answers to the exercises of Structure and Interpretation of Computer Programming, November 2001. Since some parts of these answers utilize codes in the book, I cannot provide all the answers online. Instead I put the list of exercises that I have given answers. For people interested in how I wrote these codes, please contact me so I can discuss and share my answers with you.
• Some Implementations about Public Key Cryptography using Scheme, November 2001, codes about Diffie-Hellman Key Exchange and RSA Cryptosystem written in Public Key Cryptography, Pradosh Kumar Mohapatra, ACM Crossroads Fall 2000-7.1

C and C++ Programs

• OnlineJudge, 1998, written when practicing on the Online Judge System. Since many teachers use this system for homework, I do not share my source code online anymore. Instead I put the list of problems that I have given answers. Please don't ask me for the source code of your homework. However, I am still open to share algorithms for solving the problem with those interested in mutual discussions.

Java Programs

• V800, 2000, written when preparing for GRE exam. It helps reviewing words in a training manner.

Delphi Programs

• ChangeDisplay, 2000, written for command-line changing of display setting on Win32 Systems. It can be used to prevent the GRE PowerPrep 2 for changing the display to 640*480.
• Some Demos about Fractals, 2001, Some demos about fractals, first written when studying for the Fractal Geometry course in my senior year. Current program is extended in November 2001.

Excel Files

• Vocabulary Self-test Generator, October 2001, use Excel equations to randomly generate testing problems for self-practice. Draft version written when preparing for GRE. Newest version finished in October 2001, with only Chinese Readme inside.

PowerPoint Files

• A simple CAI exam system, November 2001, use PowerPoint 2000 Macros(Visual Basic for Applications) to randomly permute the problems and make an exam system. You have to enable the Macro settings in your PowerPoint in order to use this system, but doing so may make it possible for some Macro Viruses on your computer to attact the whole system. Only Chinese Readme inside.
• A simple CAI exam-slides creating system, November 2001, use PowerPoint 2000 Macros(Visual Basic for Applications) to read problem files and generate corresponding slides, creating necessary hyperlinks so that the slides form a finite-automata for score-calculating. Note: (3n+2)(n+1)/2 slides required for n problems. You have to enable the Macro settings in your PowerPoint in order to use this system, but doing so may make it possible for some Macro Viruses on your computer to attact the whole system. Only Chinese Readme inside.

Feel free to contact me: "htlin" at "csie.ntu.edu.tw"