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martedì 5 settembre 2017

# acad: oops! sometimes they tend to reject H0 hypothesis instead of ...

<< We advertise interventions as working because statistically we think they're working. But they're actually not working. This is becoming a crisis in the sciences >> John List

Thomas Gaulkin. Scholars take aim at false positives in research. Sept 4, 2017

https://m.phys.org/news/2017-09-scholars-aim-false-positives.html

AA << propose to change the default P-value threshold for statistical significance from 0.05 to 0.005 for claims of new discoveries >>

<< The lack of reproducibility of scientific studies ... >>

Daniel J. Benjamin, James O. Berger, et al.  Redefine statistical significance. Nature Human Behaviour.  2017

https://www.nature.com/articles/s41562-017-0189-z

FonT

ricordo che gia' negli anni '70 (vale a dire oltre quarant'anni fa) in aggiunta a questa aleggiava  anche un'altra intrigante quaestio, quella relativa all'uso,  diffuso, di test parametrici anziche' altro ...

lunedì 4 settembre 2017

# zoo: clever but not as clever as humans

<< Apes' intelligence may be entirely misunderstood, because research has so far failed to measure it fairly and accurately >>

<< Hundreds of scientific studies over two decades have told us that apes are clever – just not as clever as us >>

Apes’ abilities misunderstood by decades of poor science. Aug 31, 2017

http://uopnews.port.ac.uk/2017/08/31/apes-abilities-misunderstood-by-decades-of-poor-science/

<< in the last two decades, numerous contemporary researchers in comparative psychology have claimed human superiority over apes in social intelligence, based on two-group comparisons between postindustrial, Western Europeans and captive apes, where the apes have been isolated from European styles of social interaction, and tested with radically different procedures >>

David A. Leavens, Kim A. Bard, William D. Hopkins. The mismeasure of ape social cognition. Animal Cognition. doi: 10.1007/s10071-017-1119-1 Aug 4, 2017

https://link.springer.com/article/10.1007%2Fs10071-017-1119-1

also

# s-brain: the question is: Humans vs Woodstock, who is the smarter?  Jun 26, 2016

http://flashontrack.blogspot.it/2016/06/s-brain-question-is-humans-vs-parrots.html

sabato 2 settembre 2017

# ai-bot: 352 predictions of when machines will make humans obsolete

researchers at the Oxford University's Future of Humanity Institute  << have carried out the largest-ever survey of machine learning experts on the subject >>

they << contacted 1,634 researchers who published papers at the 2015 NIPS and ICML conferences—the two leading machine learning conferences—and asked them to complete a survey on the topic, with 352 researchers responding >>

<< The aggregate forecast was that there is a 50 percent chance that 'unaided machines can accomplish every task better and more cheaply than human workers' within 45 years >>

Edd Gent. When Will AI Be Better Than Humans at Everything? 352 AI Experts Answer. Jul 25, 2017

https://singularityhub.com/2017/07/25/when-will-ai-be-better-than-humans-at-everything-352-ai-experts-answer/

<< Researchers believe there is a 50% chance of AI outperforming humans in all tasks in 45 years and of automating all human jobs in 120 years, with Asian respondents expecting these dates much sooner than North Americans >>

Katja Grace, John Salvatier, et al. When Will AI Exceed Human Performance? Evidence from AI Experts. arXiv:1705.08807 May 30, 2017

https://arxiv.org/abs/1705.08807

FonT

per mia opinione (di non esperto AI) se/quando il calcolo quantistico sara' fisicamente capillare e a basso costo come lo e' attualmente l'architettura x86, nel giro di 10-15 anni (anche prima) qualsiasi attivita' umana in qualsiasi distretto geografico del pianeta sara' riproducibile, a velocita', accuratezza, professionalita', fantasia  sorprendentemente superiori e a costi quasi nulli, tendenti a zero.

Agli umani, per evitare gli usuali  vortici autodistruttivi, servira' "l'adatta stringa" ...

http://flashontrack.blogspot.it/search?q=%22adatta+stringa%22

venerdì 1 settembre 2017

# music: harmonic resonances from moons and rings of Saturn

<< Wherever there is resonance there is music, and no other place in the solar system is more packed with resonances than Saturn >>. Matt Russo

<< Saturn's magnificent rings act like a sounding board that launches waves at locations that harmonize with the planet's many moons, and some pairs of moons are themselves locked in resonances >>. Dan Tamayo

Astrophysicists convert moons and rings of Saturn into music. Aug 30, 2017

https://m.phys.org/news/2017-08-astrophysicists-moons-saturn-music.html

giovedì 31 agosto 2017

# evol: about dino's status symbol

<< The thick body armour on some dinosaurs seems perfectly engineered to foil hungry predators. But the remains of a newly discovered armoured dinosaur hint that its spiky suit had another role: showing off to potential mates and rivals >>

<< Borealopelta lived around 110 million years ago >>

Traci Watson. Dinosaurs' spiky armour may have been status symbol. Soft-tissue patterns on a well-preserved fossil suggest that elaborate spines helped dinosaurs to attract mates and communicate. Nature doi:10.1038/nature.2017.22511 Aug 26, 2017

http://www.nature.com/news/dinosaurs-spiky-armour-may-have-been-status-symbol-1.22511

mercoledì 30 agosto 2017

# brain: to consider neurons driven by a shot noise

<< Individual presynaptic spikes can have a significant effect on a neuron's dynamics. It is thus desirable to explicitly account for the pulse-like nature of neural input, i.e. consider neurons driven by a shot noise >>

Droste F, Lindner B. Exact analytical results for integrate-and-fire neurons driven by excitatory shot noise. J Comput Neurosci. 2017 Aug;43(1):81-91. doi: 10.1007/s10827-017-0649-5. Epub 2017 Jun 6.

https://www.ncbi.nlm.nih.gov/m/pubmed/28585050/

martedì 29 agosto 2017

# gst: something that is called "non-stationarity"

<< “We’re looking at historical data when really we have something that is called non-stationarity,” Dr. Knight [Sandra Knight, a senior research engineer at the University of Maryland and a former official at the Federal Emergency Management Agency] said. “The world isn’t stationary anymore and the hydrology isn’t. The landscape isn’t. So why are we still presuming the future will look like the past?”

Nadja Popovich, Claire O'Neill. A ‘500-Year Flood’ Could Happen Again Sooner Than You Think. Here’s Why. Aug. 28, 2017

https://www.nytimes.com/interactive/2017/08/28/climate/500-year-flood-hurricane-harvey-houston.html