Re:Why wasn't a factorial experiment used?
on
Optimizing distcc
·
· Score: 2, Insightful
Maybe because he's a system administrator and not a research scientist?
That isn't a reason, you use the best solutions that are available for solving a problem type regardless of your position.
DOE is widely implemented in especially manufacturing processes, however with just basic knowledge of DOE it is easy to see the applications to non-manufacturing processes as well. DOE is readily available in just about any statistics software worth using, R, SAS, Minitab, S-Plus, etc so even if you don't have much formal knowledge they are very easy to implement.
Honestly, doesn't anybody pay attention in statistics classes? I mean for goodness sakes, I saved a major semiconductor producer millions by solving a problem that none of their engineering staff knew how to solve, and all I did was 1-way ANOVA, you have no idea how long I laughed over that one. 1-way ANOVA, that's covered in like first semester basic stats that engineers and physical scientists take, but from what I've heard atleast my school vast majority just blow the class off, and then they get their ass handed to them when their out in the real world by the stats guys, don't let it happen to you.
Why wasn't a factorial experiment used?
on
Optimizing distcc
·
· Score: 4, Informative
Sigh, another experiment that could have benefitted greatly from factorial experimentation. If your unfamiliar with DOE, here is a basic introduction courtesy of NIST:
It appears in this case we have a variety of factors and trying to, in this case, have a response of "elapsed time" for compilation and it is a minimization problem. Instead of looking at factors individually, a factorial DOE would have allowed interactions to be analyzed and to look for a global optima rather than just optimizing individual factors and then tossing them all together, it doesn't work that way a lot/most of the time.
If the author of this article is present: Why wasn't a factorial experiment used?
Ari Friedman, I whole heartedly commend you for your efforts in academia and drive to learn and explore. Great job, keep up the good work.
As for the/. posters above, why is the desire to learn looked down upon in America? If all you want to do is party and get drunk, why are you paying thousands dollars to do so?
The mentality is what is causing the sharp decreases in students going into mathematics, the sciences and engineering fields, because they are viewed as being only for "nerds". A recent article posted on yahoo news stated that it is believe by 2010 that 90% of all physical scientists will be Asian, and that over 50% of them will be working in Asia. What's America going to do with a society comprised largely of business students and other "soft" degrees?
These critics really need to understand that a=>b does NOT mean b=>a. It's a very simple logical fallacy.
Exactly. Or as statisticians like to say Correlation does not mean causality. Classical example is as the number of priests in a city increases, so do the number of drunks. Well, the correlation between priests and drunks was confounded with the population size increasing, thus the number of group X of just about anything is going to increase.
Give amazon some credit, cause few businesses nowadays besides financial institutions would go the distance to improve themselves.
Utter BS. More so than ever companies are realizing that continuous improvement is neccesary to remain competitive. Do a google on "six sigma", an process improvement methodology which started out at Motorola after a Arizona State Univ. PhD came up with the program and has balooned in the number of companies that use the six sigma methodology. For many Deming, Juran and Taguchi, the classic gurus of quality, are praised as gods. Or check out www.asq.org (American Socity of Quality) Engineers are just starting to realize the power of Experimental Design (DoE) and statistics, which current computer technology now allows even those with just basic statistical backgrounds to perform advanced statistical tests and interpret the results easily. The list goes on. Improvement is the norm, not the exception in countries such as Japan, which were in a full on quality revolution in the 60's-70's with the help of Deming, leaving America aghast and having American companies beg for his help after turning him away in the 50's and 60's. Only fairly recently has America started to catch on to quality.
As someone that actually has done some research into RFID tags (which most/. readers obviously have not) there are two types; passive and active.
Passive RFID tags require a powered reader unit (such as a handheld unit similar to the ones used for barcodes or a stationary unit) which query the RFID for the information. Since these RFID tags have no power source of their own, even with a powered reader unit the maximum reading distance is ***A FEW FEET***. The amount of data that is able to currently be stored on passive RFID tags is quite small as well. Passive RFID tags are fairly cheap, however unless breakthroughs have been made in the last 6-8 months, they still are not cost effective to stick on anything and everything.
Powered RFID tags are battery powered and are capable of storing substantially more information than passive RFID tags. Signal distance is also further than passive RFID tags however still, unless you had a reader unit in your house or some sort of truck mounted reader unit went through the neighborhood any RFID tags in your house would be unreadable, the distance even powered RFID tags is pretty short. Tags such as these cost a few dollars each, definately not cost effective to stick on just anything.
As stated in the article, and from my experience visiting a Walmart regional distribution center, is that RFID tags will be used for logistics/distribution operations. Even if they were going to start sticking RFID tags on everything tomorrow(which would be prohibitedly expensive) their distance limitations would make them useless once you got out into the parking lot, and that erring on the generous side on the distances they can transmit. So unless you have a RFID reader in your house, no worries.
For the above questions, 1) For a consumer to detect a tag is pretty obvious, they are not that small, plus, all RFID technologies I am aware of require an antennae which would be a give away even if the tag was somehow incorporated inside the product with a small antannae sticking out. Researchers at Motorola have been investigating doing away with the need for an antennae however, maybe they have overcome this issue. 2) No ideas
On the second bullet you say "computer data owned by the [government] be permanently available to the [government] throughout its useful life."
Somewhere you may want to define "useful life", I could see this as a possible loophole, this term could mean different time lengths to different people.
I'm not a lawyer, however from a law class I had to take, atleast in the state of Arizona if a non-compete dispute comes before a court and a judge feels the document is too far reaching, the judge can cross out sections to make it more fair. This is why in some non-compete agreements there will be multiple levels of restriveness on what an ex-employee can do. That way if the most restrictive clause gets struck down, there is another less restrictive clause thay may still be held up in court.
Website content management author Gerry McGovern says that something like 70 per cent of most websites goes unread
And something like 65% of all statistics are made up? To say 70% of most websites is a very broad statement and really needs narrowing of scope. And does he state anywhere how he came up with this figure? Any journal articles, documents outlining his research, etc?
Looking at the massive amount of blogs, personal sites, and other sites that hold little interest to those outside a set few, what about the percentage of websites that are read at all?
Re:Better off at a yard sale.
on
Mighty Amazon
·
· Score: 1
Yes, however at a yard sale or local used book store can you obtain at any given moment just about any book imaginable, plus have some say in the price you pay? Didn't think so.
As a FYI, at my school we started a computer club, FTLA (Future Technology Leaders of American, yeah I know very unoriginal) anyhow we held a few meetings, got a bunch of people that would like to be members and had one of our teachers be a sponsor. This teacher was not a programming teacher by the way, was a governmment teacher if I remember right but was nonetheless interested by the club. At that point we approached the administration and it went with flying colors since we had proved there was students that were interested and had a teachers backing.
Things went fine for a while until every time anything happened with the school network the club was blamed, kind of like usual suspects kinda deal when in fact we were not at fault. So whenever there was a break-in or any type of hacking the high school principal and police officer would show up at our next meeting, it was really aggrevating being treated like a bunch of criminals.
LAN parties rock
on
Fragfest
·
· Score: 2, Interesting
LAN parties are definately a lot more fun than playing over the internet IMHO, my friends and I would get a bunch of people together and play CS or other FPS and not have to worry about all the cheaters. Plus we could coordinate team assaults a lot more effectively since we could grab a piece of paper and scribble some plans on it and show it to the team mates.
The few Borders I have been to in Oregon carry them, and are in clear view, not tucked behind anything else. B&N in Clackamas Oregon also carries 2600 but they hide them behind other magazines.
Now hiring: Marketers - We need dedicated people to hype non-existant products that on paper outperform all the competitors, Combined!! We will never have an actual product for the market, but we need skilled marketing professionals to make people think one day we actually will.
Engineering - No Current Openings (and never will be)
Um, you don't start out in kendo using real swords. You go from bokken (bamboo sword, will hurt tho if it splinters), then non-edged metal sword then edged metal sword. VR will never have anything on real sword fighting, the fact you are face to face with a real combatant, the feel and sound of the two swords clashing and the feeling when you "strike down" your opponent(not really, atleast anymore)
I doubt the technology will work for all languages, take Chinese for instance, Chinese is a tonal language, you have inflections upon the word, I believe there are in some cases 9 different words you can say with the same word, just inflected differently, I highly doubt technology could pick up on inflection.
Or take Korean, Hangul characters are actually to a certain extent patterned after the position of your throat and mouth muscles, alot of the sounds in Korean come from your throat, not how you move your lips.
Japanese, you can pretty much talk while maintaining a smile.
Problem with such a piece of equipment is that they make another piece of equipment that defeats the first. For example: caller ID. To consumers, they hark caller ID boxes so they can screen calls and not pick up calls from telemarketers. Then, they turn around and create caller ID blockers and sell them to the telemarketers, thus defeating the purpose of caller ID. I'm sure a similar thing would happen with this product.
I heard off of one of the news sites that one of Bin Laden's friends/occomplices(sp?) was going to be tried today at a place near the WTC, thus a possible motive for yesterdays bombing.
Came across this warning on a bottle of spray chalk:
"...Warning: although spray chalk will generally self destruct with traffic and weather, it is advisable to check with local
authorities prior to use. Use in well trafficked areas. Spray chalk may adhere to some types of asphalt longer than others
depending on the oil content and porosity of the asphalt. If used in a low traffic area, marks may last several months. If in
doubt, pretest in a small area, let dry and remove..."
OHSU (Oregon Health Sciences University), the same guys that cloned sheep and genetically altered monkeys, have had this for some time. All the doctors have badges that allow everybody else that has a badge to locate there current location in real time, contact them, and I also believe send a doctor a patient's data file so while they are walking to the a patient's room they can look at that patient's statistics.
I guess what I think is rather scary about the tech is the fact I used to work for a company that was super anal retentative about making sure employees took breaks that were *exactly* 15 minutes long and lunch breaks that were *exactly* one hour long. I can just imagine my ex-boss coming up to me saying "according to your badge data, your average time sitting in the lunch room has been 63 minutes long, that is three minutes over". Then go to correct this then get admonished by "Well last month you were over by 3 minutes on average, this month your average lunch has been 56 minutes. That is four minutes short, make sure you take your full lunch period." Also imagine about working technical support, atleast the place I used to do tech support for was total draconian, since you'd always be "in", can you imagine being on the pot and having to still take customer calls? "Hello this xxxxxx technical support, can I *sigh* whoops where was I? Oh yeah, how can I help you?"
Slashdot Mirror
DOE is widely implemented in especially manufacturing processes, however with just basic knowledge of DOE it is easy to see the applications to non-manufacturing processes as well. DOE is readily available in just about any statistics software worth using, R, SAS, Minitab, S-Plus, etc so even if you don't have much formal knowledge they are very easy to implement.
Honestly, doesn't anybody pay attention in statistics classes? I mean for goodness sakes, I saved a major semiconductor producer millions by solving a problem that none of their engineering staff knew how to solve, and all I did was 1-way ANOVA, you have no idea how long I laughed over that one. 1-way ANOVA, that's covered in like first semester basic stats that engineers and physical scientists take, but from what I've heard atleast my school vast majority just blow the class off, and then they get their ass handed to them when their out in the real world by the stats guys, don't let it happen to you.
Sigh, another experiment that could have benefitted greatly from factorial experimentation. If your unfamiliar with DOE, here is a basic introduction courtesy of NIST:
t io n1/pri11.htm
http://www.itl.nist.gov/div898/handbook/pri/sec
It appears in this case we have a variety of factors and trying to, in this case, have a response of "elapsed time" for compilation and it is a minimization problem. Instead of looking at factors individually, a factorial DOE would have allowed interactions to be analyzed and to look for a global optima rather than just optimizing individual factors and then tossing them all together, it doesn't work that way a lot/most of the time.
If the author of this article is present: Why wasn't a factorial experiment used?
Would this be due to Ahnold, saying "asta la vista baby!"?
Ari Friedman, I whole heartedly commend you for your efforts in academia and drive to learn and explore. Great job, keep up the good work.
/. posters above, why is the desire to learn looked down upon in America? If all you want to do is party and get drunk, why are you paying thousands dollars to do so?
As for the
The mentality is what is causing the sharp decreases in students going into mathematics, the sciences and engineering fields, because they are viewed as being only for "nerds". A recent article posted on yahoo news stated that it is believe by 2010 that 90% of all physical scientists will be Asian, and that over 50% of them will be working in Asia. What's America going to do with a society comprised largely of business students and other "soft" degrees?
These critics really need to understand that a=>b does NOT mean b=>a. It's a very simple logical fallacy.
Exactly. Or as statisticians like to say Correlation does not mean causality. Classical example is as the number of priests in a city increases, so do the number of drunks. Well, the correlation between priests and drunks was confounded with the population size increasing, thus the number of group X of just about anything is going to increase.
Utter BS. More so than ever companies are realizing that continuous improvement is neccesary to remain competitive. Do a google on "six sigma", an process improvement methodology which started out at Motorola after a Arizona State Univ. PhD came up with the program and has balooned in the number of companies that use the six sigma methodology. For many Deming, Juran and Taguchi, the classic gurus of quality, are praised as gods. Or check out www.asq.org (American Socity of Quality) Engineers are just starting to realize the power of Experimental Design (DoE) and statistics, which current computer technology now allows even those with just basic statistical backgrounds to perform advanced statistical tests and interpret the results easily. The list goes on. Improvement is the norm, not the exception in countries such as Japan, which were in a full on quality revolution in the 60's-70's with the help of Deming, leaving America aghast and having American companies beg for his help after turning him away in the 50's and 60's. Only fairly recently has America started to catch on to quality.
Passive RFID tags require a powered reader unit (such as a handheld unit similar to the ones used for barcodes or a stationary unit) which query the RFID for the information. Since these RFID tags have no power source of their own, even with a powered reader unit the maximum reading distance is ***A FEW FEET***. The amount of data that is able to currently be stored on passive RFID tags is quite small as well. Passive RFID tags are fairly cheap, however unless breakthroughs have been made in the last 6-8 months, they still are not cost effective to stick on anything and everything.
Powered RFID tags are battery powered and are capable of storing substantially more information than passive RFID tags. Signal distance is also further than passive RFID tags however still, unless you had a reader unit in your house or some sort of truck mounted reader unit went through the neighborhood any RFID tags in your house would be unreadable, the distance even powered RFID tags is pretty short. Tags such as these cost a few dollars each, definately not cost effective to stick on just anything.
As stated in the article, and from my experience visiting a Walmart regional distribution center, is that RFID tags will be used for logistics/distribution operations. Even if they were going to start sticking RFID tags on everything tomorrow(which would be prohibitedly expensive) their distance limitations would make them useless once you got out into the parking lot, and that erring on the generous side on the distances they can transmit. So unless you have a RFID reader in your house, no worries.
For the above questions, 1) For a consumer to detect a tag is pretty obvious, they are not that small, plus, all RFID technologies I am aware of require an antennae which would be a give away even if the tag was somehow incorporated inside the product with a small antannae sticking out. Researchers at Motorola have been investigating doing away with the need for an antennae however, maybe they have overcome this issue. 2) No ideas
On the second bullet you say "computer data owned by the [government] be permanently available to the [government] throughout its useful life."
Somewhere you may want to define "useful life", I could see this as a possible loophole, this term could mean different time lengths to different people.
I'm not a lawyer, however from a law class I had to take, atleast in the state of Arizona if a non-compete dispute comes before a court and a judge feels the document is too far reaching, the judge can cross out sections to make it more fair. This is why in some non-compete agreements there will be multiple levels of restriveness on what an ex-employee can do. That way if the most restrictive clause gets struck down, there is another less restrictive clause thay may still be held up in court.
Website content management author Gerry McGovern says that something like 70 per cent of most websites goes unread
And something like 65% of all statistics are made up? To say 70% of most websites is a very broad statement and really needs narrowing of scope. And does he state anywhere how he came up with this figure? Any journal articles, documents outlining his research, etc?
Looking at the massive amount of blogs, personal sites, and other sites that hold little interest to those outside a set few, what about the percentage of websites that are read at all?
Yes, however at a yard sale or local used book store can you obtain at any given moment just about any book imaginable, plus have some say in the price you pay? Didn't think so.
And not everybody's first language is English:
domain: GOBIE.NET
owner-address: theodore TOURY
owner-address: 2, rue Leriche
owner-address: 92110
owner-address: Clichy la Garenne
owner-address: France
admin-c: TT224-GANDI
tech-c: TT224-GANDI
bill-c: TT224-GANDI
nserver: ns3.sporinfor.com 80.65.224.180
nserver: ns1.toury.net 62.212.99.161
reg_created: 2002-01-28 15:13:46
expires: 2004-01-28 15:13:46
created: 2002-01-28 21:13:47
changed: 2002-11-28 08:30:21
person: theodore TOURY
nic-hdl: TT224-GANDI
address: 2, rue Leriche
address: 92110
address: Clichy la Garenne
address: France
phone: +33 142709381
e-mail: toury_t@epita.fr
As a FYI, at my school we started a computer club, FTLA (Future Technology Leaders of American, yeah I know very unoriginal) anyhow we held a few meetings, got a bunch of people that would like to be members and had one of our teachers be a sponsor. This teacher was not a programming teacher by the way, was a governmment teacher if I remember right but was nonetheless interested by the club. At that point we approached the administration and it went with flying colors since we had proved there was students that were interested and had a teachers backing.
Things went fine for a while until every time anything happened with the school network the club was blamed, kind of like usual suspects kinda deal when in fact we were not at fault. So whenever there was a break-in or any type of hacking the high school principal and police officer would show up at our next meeting, it was really aggrevating being treated like a bunch of criminals.
LAN parties are definately a lot more fun than playing over the internet IMHO, my friends and I would get a bunch of people together and play CS or other FPS and not have to worry about all the cheaters. Plus we could coordinate team assaults a lot more effectively since we could grab a piece of paper and scribble some plans on it and show it to the team mates.
The few Borders I have been to in Oregon carry them, and are in clear view, not tucked behind anything else. B&N in Clackamas Oregon also carries 2600 but they hide them behind other magazines.
"Current Openings" I'm afraid I might see...
Now hiring:
Marketers - We need dedicated people to hype non-existant products that on paper outperform all the competitors, Combined!! We will never have an actual product for the market, but we need skilled marketing professionals to make people think one day we actually will.
Engineering - No Current Openings (and never will be)
Um, you don't start out in kendo using real swords. You go from bokken (bamboo sword, will hurt tho if it splinters), then non-edged metal sword then edged metal sword. VR will never have anything on real sword fighting, the fact you are face to face with a real combatant, the feel and sound of the two swords clashing and the feeling when you "strike down" your opponent(not really, atleast anymore)
I doubt the technology will work for all languages, take Chinese for instance, Chinese is a tonal language, you have inflections upon the word, I believe there are in some cases 9 different words you can say with the same word, just inflected differently, I highly doubt technology could pick up on inflection.
Or take Korean, Hangul characters are actually to a certain extent patterned after the position of your throat and mouth muscles, alot of the sounds in Korean come from your throat, not how you move your lips.
Japanese, you can pretty much talk while maintaining a smile.
I am sure many other langugages are the same way.
Here's a link to Red Flag Linux's English version site:
http://www.redflag-linux.com/eindex.html
So we can't look up any more creative words to describe M$!!
Problem with such a piece of equipment is that they make another piece of equipment that defeats the first. For example: caller ID. To consumers, they hark caller ID boxes so they can screen calls and not pick up calls from telemarketers. Then, they turn around and create caller ID blockers and sell them to the telemarketers, thus defeating the purpose of caller ID. I'm sure a similar thing would happen with this product.
I heard off of one of the news sites that one of Bin Laden's friends/occomplices(sp?) was going to be tried today at a place near the WTC, thus a possible motive for yesterdays bombing.
Came across this warning on a bottle of spray chalk: "...Warning: although spray chalk will generally self destruct with traffic and weather, it is advisable to check with local authorities prior to use. Use in well trafficked areas. Spray chalk may adhere to some types of asphalt longer than others depending on the oil content and porosity of the asphalt. If used in a low traffic area, marks may last several months. If in doubt, pretest in a small area, let dry and remove..."
Guess that's one way of clearing out the 'ol shnoz of all that annoying hair. Why use a trimmer when you can just burn it all?
OHSU (Oregon Health Sciences University), the same guys that cloned sheep and genetically altered monkeys, have had this for some time. All the doctors have badges that allow everybody else that has a badge to locate there current location in real time, contact them, and I also believe send a doctor a patient's data file so while they are walking to the a patient's room they can look at that patient's statistics. I guess what I think is rather scary about the tech is the fact I used to work for a company that was super anal retentative about making sure employees took breaks that were *exactly* 15 minutes long and lunch breaks that were *exactly* one hour long. I can just imagine my ex-boss coming up to me saying "according to your badge data, your average time sitting in the lunch room has been 63 minutes long, that is three minutes over". Then go to correct this then get admonished by "Well last month you were over by 3 minutes on average, this month your average lunch has been 56 minutes. That is four minutes short, make sure you take your full lunch period." Also imagine about working technical support, atleast the place I used to do tech support for was total draconian, since you'd always be "in", can you imagine being on the pot and having to still take customer calls? "Hello this xxxxxx technical support, can I *sigh* whoops where was I? Oh yeah, how can I help you?"