Citing a defense spending bill signed by President Bush this month, DARPA will not award any prize money at this year’s Grand Challenge.
DARPA’s interpretation of the new law prohibits the agency from conferring the anticipated $2.7 million award. Instead, the top three teams will each receive a trophy purchased out-of-pocket by DARPA director Tony Tether. This development has raised concerns that some teams will be forced to drop out of the competition and will reduce media coverage of the event.
After last year’s race where Stanford triumphed by successfully navigating a 132-mile desert course, the third Grand Challenge to be held in November 2007 will test the unmanned vehicles’ ability to traverse congested city traffic, avoiding other cars and complying with the rules of the road. Dubbed “The DARPA Urban Challenge,” this race will simulate a military supply mission in an urban environment, pushing the vehicles’ autonomous control systems to their limit. As with the two previous Grand Challenge events, the overall goal is meeting the congressional mandate to make one-third of all military ground vehicles unmanned by 2015.
via AAAI.org News
Monday, October 23, 2006
Darwinian Survival Machines or Anatman?
USNews.com has a lengthy article exploring the soul’s role in human consciousness which has some interesting implications for machine consciousness as well.
The article spans a variety of subjects from psychology to philosophy, and the most interesting passage is in the midst of a discussion about the neurophysical processes behind consciousness and language with philosopher Daniel Dennett:
This argument rejects the notion that a Turing machine is not actually conscious since it merely mimics the understanding of language by suggesting that this mechanical procedure is the only system at work within the human mind. By reducing the physical processes in the brain down to their fundamental components, we see that they are no more remarkable than the internal workings of a digital computer. Critics of AI argue that machines & algorithms cannot be conscious since we can observe precisely how they reproduce human behavior. Perhaps once human behavior itself is de-mystified to the point where our consciousness is understood completely, these people will be willing to apply the label of conscious thought more broadly.
via KurzweilAI.net
The article spans a variety of subjects from psychology to philosophy, and the most interesting passage is in the midst of a discussion about the neurophysical processes behind consciousness and language with philosopher Daniel Dennett:
"This is what I've meant over the years when I've said that the brain is a syntactic engine mimicking a semantic engine." By that, Dennett presumably means that consciousness produces orderly, grammatical representations of something out there in the world that is meaningful, but it does not create meaning. It is not necessary to meaning.
This argument rejects the notion that a Turing machine is not actually conscious since it merely mimics the understanding of language by suggesting that this mechanical procedure is the only system at work within the human mind. By reducing the physical processes in the brain down to their fundamental components, we see that they are no more remarkable than the internal workings of a digital computer. Critics of AI argue that machines & algorithms cannot be conscious since we can observe precisely how they reproduce human behavior. Perhaps once human behavior itself is de-mystified to the point where our consciousness is understood completely, these people will be willing to apply the label of conscious thought more broadly.
via KurzweilAI.net
Sunday, October 22, 2006
Hands-Free Driving
We already know about cars that can drive themselves, park themselves, and maintain a safe following distance.
Now, a consortium including Volvo and DaimlerChrysler is working to develop a control system to better integrate all of the intelligent devices in the vehicle with the human driver. How soon until we're all cruisin' around like John Anderton and Del Spooner?
via KurzweilAI.net
Now, a consortium including Volvo and DaimlerChrysler is working to develop a control system to better integrate all of the intelligent devices in the vehicle with the human driver. How soon until we're all cruisin' around like John Anderton and Del Spooner?
via KurzweilAI.net
Mobile Email Back Up
On or about 19 Sept, Google made some changes to their Gmail service.
I had been using my Palm Treo 650 smartphone on the Sprint network to get my email on the go. These changes made the Versamail auto-sync stop working. I couldn't download new email manually either. I was still able to check my messages via webmail on the Blazer browser, but that was a pain in the butt.
I finally had a chance to research this issue, and came across a very helpful Google Groups topic. Basically, I had to disable POP completely, and then re-enable it for all new email. And voila...we're back in business!
I had been using my Palm Treo 650 smartphone on the Sprint network to get my email on the go. These changes made the Versamail auto-sync stop working. I couldn't download new email manually either. I was still able to check my messages via webmail on the Blazer browser, but that was a pain in the butt.
I finally had a chance to research this issue, and came across a very helpful Google Groups topic. Basically, I had to disable POP completely, and then re-enable it for all new email. And voila...we're back in business!
Monday, February 13, 2006
Frustrating Recursion
I thought I made a mistake once, but I was wrong. For some reason, this happens to me all the time when programming.
I was working on AutoSummary this weekend, adding a contextual framework using hypernym (superordinate) information for individual senses of a given word. In order to do this I needed to create a b-tree data structure. I thought I had set everything up properly, except the tree wouldn't populate past the second level. Weird crashes, etc. I tried everything, checked all of the functions and methods, testing everything I could think of. Nothing.
Tonight, I started checking everything over again, trying some different approaches. I did some digging and determined something was generating a null pointer exception. I checked everything all over again, and again... nothing. After a period of insufferable aggrivation, I discovered by trial and error that the exception was caused by the fact that I had forgotten to initialize the data container (an ArrayList). I was so worried about getting all the "hard stuff" figured out that I had overlooked a beginner's error.
The moral of the story? The simplest answers are often the hardest to find.
I was working on AutoSummary this weekend, adding a contextual framework using hypernym (superordinate) information for individual senses of a given word. In order to do this I needed to create a b-tree data structure. I thought I had set everything up properly, except the tree wouldn't populate past the second level. Weird crashes, etc. I tried everything, checked all of the functions and methods, testing everything I could think of. Nothing.
Tonight, I started checking everything over again, trying some different approaches. I did some digging and determined something was generating a null pointer exception. I checked everything all over again, and again... nothing. After a period of insufferable aggrivation, I discovered by trial and error that the exception was caused by the fact that I had forgotten to initialize the data container (an ArrayList). I was so worried about getting all the "hard stuff" figured out that I had overlooked a beginner's error.
The moral of the story? The simplest answers are often the hardest to find.
Sunday, January 29, 2006
Moving Forward
Last night I did some work on the Answer Machine, and today I'm working on adding topic detection to AutoSummary.
Check out the entry in the Answer Machine project log for details about its new functionality. As for AutoSummary, I came up with a good idea about how to implement topic detection within the current framework of the program. I was checking out this post at the Search Science blog that I read, and thought "I can do that."
What I plan on doing is after determining the likely sense of a given word, I'll build a list of all of the possible topics that word is connected to (using the WordNet domain function). From that I'll be able to find the topic of a sentence by taking the best intersection of all the anchor words (not "the" or "and" etc).
You can probably see how it will scale from there, building intersections of sentences into paragraphs, and paragraphs into entire texts. So very shortly I just might be able to take an fully body of text and determine just what the heck it is all about. Could be an interesting step forward in search relevance and data mining...
Check out the entry in the Answer Machine project log for details about its new functionality. As for AutoSummary, I came up with a good idea about how to implement topic detection within the current framework of the program. I was checking out this post at the Search Science blog that I read, and thought "I can do that."
What I plan on doing is after determining the likely sense of a given word, I'll build a list of all of the possible topics that word is connected to (using the WordNet domain function). From that I'll be able to find the topic of a sentence by taking the best intersection of all the anchor words (not "the" or "and" etc).
You can probably see how it will scale from there, building intersections of sentences into paragraphs, and paragraphs into entire texts. So very shortly I just might be able to take an fully body of text and determine just what the heck it is all about. Could be an interesting step forward in search relevance and data mining...
Saturday, January 21, 2006
U.S. Losing Edge on UAVs?
Recent developments suggest other nations might be catching up to the U.S. military in UAV technology.
Last week, reports surfaced that the Dept of Defense will terminate the J-UCAS program (parent of the X-45) as part of a Quadrennial Defense Review plan to modernize the USAF bomber fleet. While the Air Force and Navy will continue to develop their own independent unmanned aircraft programs, this move could be a death blow to a program showing enormous promise. The new bomber could incorporate some of the J-UCAS technology, and officials have not ruled out the possibility of building an unmanned bomber.
Meanwhile, the British just unveiled a stealth drone of their own. Dubbed the "Corax," the unmanned aircraft features a tailess, stealthly airframe and will be used as a platform to develop new command and control systems.
At the same time, the South Koreans have announced plans to develop sophisticated military robots, including "eight-legged autonomous combat vehicles."
So while other militaries forge ahead with unmanned weapons systems, the U.S. cuts its most advanced unclassified UAV program, even though the DOD recently said cancelling the program would erode its unmanned aircraft advantage. Fortunately, South Korea and the UK are friendly nations, but how long will it be until a rival demonstrates the willingness to challenge American air superiority with unmanned fighters of their own? That might be the only developlment likely to cause unmanned systems to replace fighter pilots in their air-to-air combat role.
Latest News: The Air Force Times is reporting that officials are planning a new career field for UAV operators, entirely distinct from traditional aircraft pilots. So instead of forcing traditional pilots to non-voluntarily retrain into UAV operators, this move aims to train pilots to specialize in unmanned systems from the get-go. Perhaps a new breed of leadership grown from the ranks of these UAV specialists will not retain the nostalgic attachment to the 'feel and experience' of traditional aviation, and will enable this technology to progress without prejudice.
Last week, reports surfaced that the Dept of Defense will terminate the J-UCAS program (parent of the X-45) as part of a Quadrennial Defense Review plan to modernize the USAF bomber fleet. While the Air Force and Navy will continue to develop their own independent unmanned aircraft programs, this move could be a death blow to a program showing enormous promise. The new bomber could incorporate some of the J-UCAS technology, and officials have not ruled out the possibility of building an unmanned bomber.
Meanwhile, the British just unveiled a stealth drone of their own. Dubbed the "Corax," the unmanned aircraft features a tailess, stealthly airframe and will be used as a platform to develop new command and control systems.
At the same time, the South Koreans have announced plans to develop sophisticated military robots, including "eight-legged autonomous combat vehicles."
So while other militaries forge ahead with unmanned weapons systems, the U.S. cuts its most advanced unclassified UAV program, even though the DOD recently said cancelling the program would erode its unmanned aircraft advantage. Fortunately, South Korea and the UK are friendly nations, but how long will it be until a rival demonstrates the willingness to challenge American air superiority with unmanned fighters of their own? That might be the only developlment likely to cause unmanned systems to replace fighter pilots in their air-to-air combat role.
Latest News: The Air Force Times is reporting that officials are planning a new career field for UAV operators, entirely distinct from traditional aircraft pilots. So instead of forcing traditional pilots to non-voluntarily retrain into UAV operators, this move aims to train pilots to specialize in unmanned systems from the get-go. Perhaps a new breed of leadership grown from the ranks of these UAV specialists will not retain the nostalgic attachment to the 'feel and experience' of traditional aviation, and will enable this technology to progress without prejudice.
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