Latest By
Category:
Armor
Artificial
Intelligence
Biology
Clothing
Communication
Computers
Culture
Data Storage
Displays
Engineering
Entertainment
Food
Input Devices
Lifestyle
Living Space
Manufacturing
Material
Media
Medical
Miscellaneous
Robotics
Security
Space Tech
Spacecraft
Surveillance
Transportation
Travel
Vehicle
Virtual
Person
Warfare
Weapon
Work
 |
Comments on 'Precrime' Parole System In Philadelphia
A machine learning system in Philly tries, with considerable success, to predict which inmates should be paroled. (Read
the complete story)
| "A 45% success rate on an either/or question? A random choice should get 50%." (Andy 7/14/2009 7:41:29 AM) |
| "Not entirely true in this scenario. You would have to see the entire test. Lets say you take 30k cases and 500 of them result in repeat offenses. Flipping a coin on every one(Random Choice as you put it)would result in you catching 250 out of 500 of those cases just as you say, but it would also result in 14500 cases where you said they would but they would not. That is 50% success across the entire 30k cases which is basically awful. Hell, you'd get better success just letting everyone go. If this thing were 95% accurate with the other 29500 cases and 45% accurate with the 500, that is amazing. Overall that is a 94% accuracy. Of course I'm making numbers up and even with 94% accuracy you're still jailing 1500 potentially innocent people. What is important is not being accurate with the offenders, but rather with the non-offenders. Any reading on accuracy there?" (Brandon 7/14/2009 8:28:02 AM) |
| "Guys - thanks for your comments. I've rewritten the article a bit for clarity. However, as Brandon points out, the 'missing piece' is the number of cases of violent behavior that were not caught by the computer. Nothing has been published in a journal; this article is all I've found." (Bill Christensen 7/14/2009 9:26:40 AM) |
| "The terms are "false positive" and "false negative". Without knowing these it is indeed impossible to judge the system." (Yossi Preminger 7/14/2009 10:04:55 AM) |
| ""Science has made this available to us. We'd be foolish not to use it."
Famous last words." (Zac Hunter 7/14/2009 10:41:34 AM) |
Get more information on 'Precrime' Parole System In Philadelphia
Leave a comment:
Tediously, spammers have returned; if you have a comment, send it to bill at this site (include the story name) and I'll post it.
More Articles
Robot Hand Creeps Along, Separate From It's Owner
'The crawling... object was V-Stephen's surgeon-hand...'
Taikonauts Exercise In China's Tiangong Space Station
'Joe got out the gravity-simulator harnesses...'
Korean Exoskeleton Suit F1 Helps You Put It On
'Better late than never.'
Have AI Researchers Given Up On 'Bio-Babies'?
'You couldn't have the capstone without the pyramid to hold it up.'
Bunker Busters and Bore-Pellets
'The first revelation of the new Soviet bore-pellets.'
'Spikeless' Brand Swizzle Stick Detects Spiked Drinks
'the unobtrusive inspections with tiny remote-cast snoopers...'
Heart Patches Grown In The Lab Repair Hearts
I'm hoping that this procedure becomes a normal part of medical practice!
Humanoid Robots Spotted In Homes Performing Household Chores
'... nothing was perfected until M. Pantalon announced the completion of his automatic valet.'
Musk Proposes Sites For Martian Cities
'...its streets were of remarkable width, with few or no buildings so high as mosques, churches, State-offices, or palaces in Tellurian cities.'
Bambot Open Source Cheap Delivery Robot
'Not since the time he rewired the delivery robot...'
Robot Collective Acts Like A Smart Material
'...it was all composed of tiny, identical cubes, carefully laid to form a tilelike surface.'
Vipera Electric Skis From Frigid Dynamics
'JOAN strapped on her power-skis...'
Pixel Watch 'Loss of Pulse Detection' And Philip K. Dick
'He carried on his person a triggering mechanism sensitive to his heartbeat.'
Nuclear Plant Restarted To Power AI To Feed Us Dreams
'...Anything was possible in my imaginary environment.'
SpaceX's Starman Tesla Roadster In Space
'Somewhere in space, a chrome and blue automobile raced the green light of Earth.'
Pivotal Blackfly Electric Aircraft Lifts And Hovers
'That explains how it was so easy for me to remain motionless in midair...'
CORLEO Robotic Horse Concept Looks Ready To Ride
Imagine digging your heels in to a steam horse!
Who First Thought Of A Tin Foil Hat?
'We had discovered that metal was relatively impervious to the telepathic effect.'
Warp Drive Tech Back On The Menu
'Detailed plans for the construction of the Gundstetter-Halone warp drive were flowing.'
Huawei Pura X Folding Phattie Phone
Why can't we get more innovative phone configurations?
