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sabato 9 febbraio 2019

# gst: (you must) read the noise as a message

<< Noise is often thought to be a nuisance with negative consequences, (..)  But through this study we show that noise can actually be used as a salient informational cue. It can provide individuals with important information about their environment and when it's safe to hunt. >> Inga Geipel

When does noise become a message?  Smithsonian Tropical Research Institute. Feb 6, 2019.

https://m.phys.org/news/2019-02-noise-message.html

<< Background noise can have strong negative consequences for animals, reducing individual fitness by masking communication signals, impeding prey detection and increasing predation risk. While the negative impacts of noise across taxa have been well documented, the use of noise as an informational cue, providing animals with reliable information on environmental conditions, has been less well studied. >>

Inga Geipel, Marcus J. Smeekes, et al. Noise as an informational cue for decision-making: the sound of rain delays bat emergence. Journal of Experimental Biology 2019 222: jeb192005 doi: 10.1242/jeb.192005 Feb 1, 2019.

http://jeb.biologists.org/content/222/3/jeb192005

Also

"noise" | "rumore"

https://inkpi.blogspot.com/search?q=noise

https://inkpi.blogspot.com/search?q=rumore

martedì 5 febbraio 2019

# sec: oops! 5G, a European dilemma (the 1st one of a series): the quiet spread of Huawei

<< China's Huawei has quietly become a leading supplier of the backbone equipment for mobile networks, particularly in developing markets thanks to cheaper prices. >>

<< Each year it invests between 10 and 15 percent of its sales revenue on research and development. It spent $13.8 billion on R&D  (Research and development) in 2017 and $15 billion last year. >>

<< It's a dilemma for European telecoms firms: Should they steal a march on competitors and rapidly roll out next-generation 5G mobile networks using equipment from top supplier Huawei? Or should they heed US-led warnings of security threats and sit tight, and possibly fall behind? >>

<< Huawei strenuously denies its equipment could be used for espionage. >>

<< Deutsche Telekom, in an internal document obtained by Bloomberg, warned that Europe could fall behind China and the United States by as much as two years if it forgoes using Huawei's 5G equipment. >>

Erwan Lucas. European telecoms' dilemma: Huawei or the highway? Feb 3, 2019.

https://phys.org/news/2019-02-european-telecoms-dilemma-huawei-highway.html  

Also

https://flashontrack.blogspot.com/search?q=%23+sec

venerdì 1 febbraio 2019

# ai.bot: organizations can help keep workers productive and happy with AI "superminds", by Thomas.

<< Malone (Thomas Malone is a professor of management at MIT’s Sloan School of Management, founder and director of the MIT Center for Collective Intelligence) predicts that AI, robotics, and automation will destroy many jobs-including those of high-skilled knowledge workers-while at the same time creating new ones. By investing in the right kinds of AI, he says, organizations can help keep workers productive and happy-and make sure our “superminds” are actually smarter than our regular minds. >>

How AI is changing knowledge work: MIT’s Thomas Malone. With help from the right AI algorithms, organizations can evolve into "superminds" that are smarter than their individual members. Jan 24, 2019.

https://www.technologyreview.com/s/612815/how-ai-is-changing-knowledge-work-mits-thomas-malone/

https://twitter.com/techreview/status/1089340036498239489

Also

1740 - Codice di macchina IA (moveri machina coepit). Dec 19, 2004.

http://inkpi.blogspot.com/2004/12/1740-codice-di-macchina-ia-moveri.html

https://flashontrack.blogspot.com/search?q=ai.bot

lunedì 28 gennaio 2019

# acad: oops! 78.1% of biomed. sci. studies use only parametric tests ...

<< Transparent reporting is essential for the critical evaluation of studies. However, the reporting of statistical methods for studies in the biomedical sciences is often limited. >>

<< Nonparametric tests, such as the Mann-Whitney U test, Wilcoxon sign rank test and Kruskal Wallis test, may sometimes be preferable as sample sizes in basic biomedical science research are often too small to determine the data distribution. However, these tests are not commonly used. A systematic review of physiology studies showed that 3.8% used only non-parametric tests to compare continuous data, 13.6% used a combination of parametric and non-parametric tests, and 78.1% of studies used only parametric tests >>

Tracey L. Weissgerber, Oscar Garcia-Valencia, et al. Meta-Research: Why we need to report more than 'Data were Analyzed by t-tests or ANOVA'. eLife 2018; 7:e36163. Dec 21, 2018 doi: 10.7554/eLife.36163

https://elifesciences.org/articles/36163   

sabato 26 gennaio 2019

# ai: DeepMind - AlphaStar wins almost every match against Pro StarCraft II players

<< Humans tend to think we’re adept at the games we create, but computers have proven time and time again that we’re just not fast enough to stay on top. >>

<<  AlphaStar is a convolutional neural network (..) Through intensive training with competing models, DeepMind was able to teach AlphaStar how to play the game as well as the best human players. (..)  AlphaStar has substantially lower APM (actions per minute) compared with the human players, but it’s making smarter choices. >>

Ryan Whitwam. DeepMind AI Challenges Pro StarCraft II Players, Wins Almost Every Match. Jan 24, 2019.

https://www.extremetech.com/gaming/284441-deepmind-ai-challenges-pro-starcraft-ii-players-wins-almost-every-match

The AlphaStar team. AlphaStar: Mastering the Real-Time Strategy Game StarCraft II. Jan 24,  2019.

https://deepmind.com/blog/alphastar-mastering-real-time-strategy-game-starcraft-ii/

Also

https://flashontrack.blogspot.com/search?q=%23+ai

giovedì 24 gennaio 2019

# evol: a ghost archaic ancestor was identified with deep learning

<< All modern humans are genetically related to each other at a time depth of up to 300 thousand years ago and share a common African root. >>

<< Sequencing of ancient Neanderthal and Denisovan fossils supported introgression events into AMH (Anatomically Modern Humans) out of Africa; however, recent studies also support the presence of gene flow from AMH into Neanderthals, thus suggesting a complex hominin evolution. >>

AA << results support a third introgression in all Asian and Oceanian populations from an archaic population. This population is either related to the Neanderthal-Denisova clade or diverged early from the Denisova lineage. >>

Mayukh Mondal, Jaume Bertranpetit,  Oscar Lao. Approximate Bayesian computation with deep learning supports a third archaic introgression in Asia and Oceania.  Nature Comm. 10 (246) Jan 16, 2019 doi: 10.1038/s41467-018-08089-7.

https://www.nature.com/articles/s41467-018-08089-7

martedì 22 gennaio 2019

# brain: a way to prevent over-firing NMDA receptors ... "it really comes down to chemistry"

<< The ideal drug is one that only affects the exact cells and neurons it is designed to treat, without unwanted side effects. This concept is especially important when treating the delicate and complex human brain. Now, scientists at Cold Spring Harbor  Laboratory have revealed a mechanism that could lead to this kind of long-sought specificity for treatments of strokes and seizures. >>

<< it really comes down to chemistry >> Hiro Furukawa.

Brian Stallard. Targeting 'hidden pocket' for treatment of stroke and seizure. Cold Spring Harbor Laboratory.  Jan 19, 2019.

https://m.phys.org/news/2019-01-hidden-pocket-treatment-seizure.html

Michael C. Regan, Zongjian Zhu, et al. Structural elements of a pH-sensitive inhibitor binding site in NMDA receptors. Nature Comm. 10 (321). Jan 18, 2019 doi: 10.1038/s41467-019-08291-1

https://www.nature.com/articles/s41467-019-08291-1