Archive for month: April, 2007

More on Flash Video…

April 30, 2007 | General | By: Mark VandeWettering

My brother mocked my use of ffmpeg to create flash video as I did a couple of days ago. He sent me this set of command line options for the Swiss Army knife of video encoders: mencoder. I went ahead and encoded the classic civil defense film “Duck and Cover”, and then used the flvtool2 […]

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Overpass Collapses, Many People Annoyed for Months

April 30, 2007 | General | By: Mark VandeWettering

I dropped in at work over the weekend (we are in the final death throes of production on Ratatouille, so I’m basically doing 7 days a week for the next couple of weeks) and noticed that the traffic along 80 was pretty bad. I didn’t think too much of it, but apparently the cause was […]

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Struggling with Milhouse…

April 26, 2007 | General | By: Mark VandeWettering

My checkers program has developed some annoying quirks (read: bugs) and I haven’t made any good progress in figuring them out, except to assertain that most of them appear to be centered around the use of transposition tables (when I disable the transposition tables, my program is much better behaved). Because I didn’t know what […]

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Micro-Max, a TEENY chess program

April 24, 2007 | General | By: Mark VandeWettering

During my lunchbreak, I ran across this miniscule chess program. Very, very neat. Micro-Max

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More links on search and computer game playing

April 23, 2007 | General | By: Mark VandeWettering

Bruce Morleland has some excellent stuff on his Computer Chess page, including some details on transposition tables that seems useful.

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Historic Paper on Transposition Tables

April 23, 2007 | General | By: Mark VandeWettering

Today was a miserable day for my checkers program. I suspected that some of the cases that were causing me some difficulty in the puzzles that I have attempted to date were caused by some problems with my alphabeta search. To resolve this, I coded up some simpler versions and a simple version of minimax. […]

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The Internet Movie Database

April 23, 2007 | General | By: Mark VandeWettering

I didn’t realize that the data for The Internet Movie Database (IMDb) was available for download as plain text files. Did you? Thanks to the Foxmath blog for pointing this out to me.

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Progress with Milhouse

April 21, 2007 | General | By: Mark VandeWettering

My checkers playing program milhouse is currently advancing at a good clip. I’ve added iterative deepening and a transposition table, and probably will add a history heuristic for move reordering to improve the search further. I’ve also started typing in a bunch of problems from Pike’s Little Giant Encyclopedia of Checkers Puzzles, and used them […]

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Lennart Augustsson on Automatic Differentiation

April 19, 2007 | General | By: Mark VandeWettering

Lennart has a nice writeup on automatic differentiation in Haskell. I keep trying to come up with a reason to learn more about Haskell, and examples like this (which are difficult or at least less understandable in C or C++) go quite some way in convincing me that I should invest the time to understand […]

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Cat on video…

April 19, 2007 | General | By: Mark VandeWettering

Caught Sam’s cat on the wireless webcam, but mostly this is just a test of the embedded flash player. Addendum: Here is WP-FLV, the WordPress Plugin you need. Addendum2: You can create flash video using only open source, free tools. I took the AtomBomb1946.mpeg from archive.org, and then ran: ffmpeg -i AtomBomb1946.mpeg -s 320×240 atombomb.flv […]

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Baseball and Programming…

April 18, 2007 | General | By: Mark VandeWettering

Well, I had maxed my vacation time out again, so was forced to take a day off. Oh darn. My son and I decided to take the opportunity for a little daytime baseball. Despite some early fear that it would be cold and windy, it was only a little windy, but a very nice day […]

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Why I don’t leave the ballpark early…

April 15, 2007 | General | By: Mark VandeWettering

If you are one of those people who leaves the ballpark early, all I can say is shame on you. SHAME! Today was an excellent example of why I don’t leave the ballpark early. After scoring two early against Andy Pettit, the A’s would eventually fall behind 4-2 going into the bottom of the ninth. […]

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Milhouse still has some confusing bugs…

April 15, 2007 | General | By: Mark VandeWettering

Well, I’ve got my first trivial attempts at alpha-beta search working, and my confidence in the general framework that I had constructed was growing, when I discovered that there are some circumstances where milhouse (which mostly just plays itself at the moment) seems to forget which side it is playing, and moves red checkers when […]

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Milhouse solves its first (trivial) Checker Puzzle

April 14, 2007 | General | By: Mark VandeWettering

With white to have the first move, my checkers program was able to chart its way to a win for white. Here’s the log. It’s almost certainly chocked full of bugs, and is using a hideously childish evaluation function, and has no interface at all, but it’s making progress. Technorati Tags: Checkers, Programming, Alpha Beta […]

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Gutenberg Gem: People’s Handy Atlas of the World

April 14, 2007 | General | By: Mark VandeWettering

Sure, it’s from 1910, but it’s a free atlas. Maps are kind of cool. Enjoy. People’s Handy Atlas of the World Technorati Tags: Public Domain, Project Gutenberg

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