Navigation Links
Computer can infer rules of the forest
Date:7/25/2013

A forest full of rabbits and foxes, a bubbling vat of chemical reactants, and complex biochemical circuitry within a cell are, to a computer, similar systems: Many scenarios can play out depending on a fixed set of rules and individual interactions that can't be precisely predicted chemicals combining, genes triggering cascades of chemical pathways, or rabbits multiplying or getting eaten.

Predicting possible outcomes from a set of rules that contain uncertain factors is often done using what's called stochastic prediction. What has eluded scientists for decades is doing the reverse: To find out what the rules were, simply by observing the outcomes.

Researchers led by Hod Lipson, associate professor of mechanical and aerospace engineering and of computing and information science at Cornell University, have published new insight into automated stochastic inference that could help unravel the hidden laws in fields as diverse as molecular biology to population ecology to basic chemistry.

Their study, published online July 22 in Proceedings of the National Academy of Sciences, describes a new computer algorithm that allows machines to infer stochastic reaction models without human intervention, and without any previous knowledge on the nature of the system being modeled.

With their algorithm, Lipson and colleagues have devised a way to take intermittent samples for example, the number of prey and predating species in a forest once a year, or the concentration of different species in a chemical bath once an hour and infer the likely reactions that led to that result. They're working backward from traditional stochastic modeling, which typically uses known reactions to simulate possible outcomes. Here, they're taking outcomes and coming up with reactions, which is much trickier, they say.

"This could be very useful if you wanted to learn the driving rules for not just foxes and rabbits, but any evolving system wi
'/>"/>

Contact: Syl Kacapyr
vpk6@cornell.edu
607-255-7701
Cornell University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Emerging importance of computerized cognitive testing -- new therapies for dementia
2. Solving DNA puzzles is overwhelming computer systems, researchers warn
3. Daydreaming simulated by computer model
4. Computer modeling technique goes viral at Brandeis
5. Computer simulations yield clues to how cells interact with surroundings
6. Computer model may help athletes and soldiers avoid brain damage and concussions
7. Computer modeling reveals how surprisingly potent hepatitis C drug works
8. New supercomputer to aid genomics research
9. New supercomputer coming to EMSL this summer, supplied by Atipa Technologies
10. Virginia Tech computer scientists develop new way to study molecular networks
11. Iowa State computer, electrical engineers working to help biologists cope with big data
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... trials to treat tuberculosis could be the basis for ... bacteria, fungal infections and parasites, yet evade resistance, according ... collaborators. , Led by U. of I. chemistry professor ... drug SQ109 attacks the tuberculosis bacterium, how the drug ... to malaria and how targeting multiple pathways reduces ...
(Date:4/17/2014)... West Orange, NJ. April 16, 2014. Kessler Foundation ... for $1.8 million from the Department of Defense ... PhD, is principal investigator for the randomized, double-blinded, ... to improve bone and muscle strength after spinal ... Human Performance & Engineering Research at Kessler Foundation. ...
(Date:4/17/2014)... Occurring in about one per eight hundred births, Down ... frequent genetic cause of intellectual disability. It results from ... a third copy of chromosome 21 (1% of the ... his team in the Department of Genetic Medicine and ... Medicine, published in Nature , shed light on ...
Breaking Biology News(10 mins):Multitarget TB drug could treat other diseases, evade resistance 2Kessler Foundation awarded Department of Defense grant for spinal cord injury research 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 3
... Université Laval biologist Connie Lovejoy has discovered new ... findings are reported in the January 12 edition ... discovered a new group of microscopic organisms, which ... extremely small size, measured in millionths of a ...
... to protect against human papillomavirus, has moved from scientific ... to make progress. While HPV vaccine efforts had the ... researchers are developing vaccines for cancers that are not ... system into attacking cancerous cells. Today at the ...
... from West Africa were cracking nuts with stone tools ... The result suggests chimpanzees developed this behaviour on their ... trait inherited from our common ancestor. Julio Mercader, Christophe ... site in Cote d'Ivoire, the only known prehistoric chimpanzee ...
Cached Biology News:Cancer vaccines -- Taking a jab at cancer by stimulating the immune system 2Cancer vaccines -- Taking a jab at cancer by stimulating the immune system 3Cancer vaccines -- Taking a jab at cancer by stimulating the immune system 4Cancer vaccines -- Taking a jab at cancer by stimulating the immune system 5The chimpanzee stone age 2
(Date:1/15/2014)... A study has been launched to test ... track could help to tackle the problem of obesity.  This ... GP surgery based in Stowmarket) and academics at University Campus ... Telemetry technology, which is inspired by equipment used to collect ...
(Date:1/15/2014)... Two champions of science, technology, engineering, ... an annual competition for middle and high school students ... STEM study. The competition presents students with real-world problems ... Aptitude, Mathematics, and Sciences is a program administered ...
(Date:1/15/2014)... 15, 2014 DTS Language Services, Inc ... Web Portal for Life Science organizations who need document translations. ... subject matter of their documents in advance with a selection ... time-to-delivery of translations, often a critical factor in clinical and ...
(Date:1/15/2014)... Freeslate, Inc ., the leading ... Lupin Limited, one of India’s top five pharmaceutical companies, ... System for high throughput solid form screening. ... a wide range of quality, affordable generic and branded ...
Breaking Biology Technology:Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 2Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5DTS Improves Efficiency for Life Science Document Translations 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3
... are exposed to sunlight? And how is the skin affected ... subject of research at the University of Gothenburg and Chalmers ... dermatologist conference in Gothenburg. A growing hole in the ... an increase in the number of cases of skin cancer ...
... 12 Beta-Pro LLC, announced today that it ... from pharmaceutical drug discovery and research institutes in ... sciences company now manages extensive laboratory facilities in ... Virginia.   "Beta-Pro has already established ...
... 12 WaferGen Biosystems, Inc. (OTC Bulletin Board: ... analysis systems, today announced that Gary P. Schroth, Ph.D., ... sequencing for gene expression at Illumina, Inc., has joined ... Applications, a new position created to build on the ...
Cached Biology Technology:So that's why we're allergic to sun creams 2Beta-Pro Expands Operations to Meet Demands for Human Cells in Hepatocyte Drug Discovery Market 2WaferGen Names Gary P. Schroth, Ph.D., as New SVP, Genomics Research and Applications 2WaferGen Names Gary P. Schroth, Ph.D., as New SVP, Genomics Research and Applications 3WaferGen Names Gary P. Schroth, Ph.D., as New SVP, Genomics Research and Applications 4WaferGen Names Gary P. Schroth, Ph.D., as New SVP, Genomics Research and Applications 5
...
Immunogen: Synthetic peptide: R(89) L A F T V D D N P T K P T T R Q R Y(107) Storage: -20 C, Avoid Freeze/Thaw Cycles...
...
Liquid. Phycoerythrin conjugate is in PBS, pH 7.4 containing 1% BSA and 0.1% sodium azide....
Biology Products: