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Graham Poulter
Works at Google
Attended University of Cape Town
Lives in Dublin, Ireland
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Graham Poulter

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An auto-awesomed photo overlooking the Japanese Garden in Powerscourt Gardens, where I went with Pat on Saturday.
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One of a new generation of touch screen game, like Auralux. I love the peaceful background music, variety of game mechanics (repulsers, attractors, other sentient motes, antimatter) that all interact in a consistent manner - might call it "Osmos physics" - and the way you can slow it down or speed it up to suit your mood.
*** 66% off for a limited time in celebration of the Autumnal Equinox! Happ...
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I have the PC version of Osmos (and Solar 2), and they work just fine. I don't see them as tied to touch screen input particularly.
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Here's the latest Google[x] project, just announced!   : )

Introducing Project Wing
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Wow, nice!
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Great video explaining the significance of the Higgs Boson: it shows the Standard Model of particle physics to be a complete theory of physics at the energy and distance scales relevant to everyday human life on Earth.

In other words, with the completion of the Higgs boson experiments, unknown particles (such as Dark Matter) and unknown forces (such as Dark Energy) must lie within high-energy, short-range, short-life, or weak-interaction regimes that give them no influence over day-to-day human life.  

Having a complete theory of physics at human-relevant energy and distance scales however rules out phenomena that would call for unknown particles and unknown forces, such as telekinetic force,  clairvoyant vision, telepathic communication,  or spirit-forces poking at your brain to drive you around.
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+MrGarnache​​​ you are refuting a much more general assertion than the speaker made. The speaker claims our experiments have thoroughly covered the distance and energy bands relevant to the human body, and found all the forces and particles that there are to be found at those scales. His claim in no way asserts that there are no new forces or particles to be found in general.
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View over Grand Canal Docs through shattered glass on the side of a bridge. 
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An excellent article on causation, and its relationship to correlation. Clears things up brilliantly
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Turns out empathy has a dark side.
 
Empathy Can Sometimes Motivate This Dark, Unjustified Behaviour
Empathy has a dark side which is at odds with its image as a cure-all for the world’s problems.
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All the food chemistry graphics so far are now up on the site’s downloads page as PDFs in a zip file, so you don’t have to go to each one’s post in turn to download them: http://wp.me/P4aPLT-3O Enjoy!
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Yann Lecun weighs in with actual details on how IBM's TrueNorth neurosynaptic chip operates.
 
My comments on the IBM TrueNorth neural net chip.

IBM has an article in Science about their TrueNorth neural net chip. The chip has 4096 processors, each of which has 256 integrate-and-fire spiking neurons (with binary output) each with 256 inputs. Each processor can compute all 256 neurons 1000 times per second. Neuron states are binary (spikes) and synaptic weights are 9-bit signed integers with a 4-bit time delay. The overall peak performance is 4096x256x256x1000 = 266 GSops (billion synaptic operations per second). The power consumption is supposed to be around 100mW. 

The NYT and Wired have articles about the announcement in which I express my skepticism of the approach. I feel that I need to clarify my position. 

First, I'm all in favor of building special-purpose chips to run neural nets. In fact, I have worked on this myself. My NYU lab started the NeuFlow project, which implements convolutional neural nets in hardware (see http://www.neuflow.org/ ). the NeuFlow project was initially implemented at NYU on a Xilinx Virtex-6 FPGA (http://yann.lecun.com/exdb/publis/index.html#farabet-suml-11 ), and later turned into an ASIC design by Eugenio Culurciello and his team at Purdue (http://yann.lecun.com/exdb/publis/index.html#pham-mwscas-12 ). 

The NeuFlow design implements convolutional networks which we know can produce state of the art performance on a number of vision tasks such as object recognition, semantic segmentation, obstacle detection, etc. So we know that the hardware could be practically useful and was worth the effort and the cost (mostly paid for by ONR).

Now, what wrong with TrueNorth? My main criticism is that TrueNorth implements networks of integrate-and-fire spiking neurons. This type of neural net that has never been shown to yield accuracy anywhere close to state of the art on any task of interest (like, say recognizing objects from the ImageNet dataset). Spiking neurons have binary outputs (like neurons in the brain). The advantage of spiking neurons is that you don't need multipliers (since the neuron states are binary). But to get good results on a task like ImageNet you need about 8 bit of precision on the neuron states. To get this kind of precision with spiking neurons requires to wait multiple cycles so the spikes "average out". This slows down the overall computation. 

Getting excellent results on ImageNet is easily achieved with a convolutional net with something like 8 to 16 bit precision on the neuron states and weights. This requires to implement hardware multipliers. But the structure of convolutional nets make it easy to organize the computation so the traffic with the memory is minimized.

An ASIC implementing the NeuFlow architecture with the same fabrication technology as TrueNorth would be capable of about 3000 GSops (billion synaptic operations per second) in about 1 Watt. That's 3.3e-13 Joules/Sop. This is similar to the TrueNorth's 3.7e-13 J/Sop (266 GSops in 0.1 W).

These estimates are somewhat speculative, but fairly conservative. I'm assuming 16 bit states and weights for NeuFlow, which is considerably more accurate than TrueNorth's 1-bit states and 9-bit weights. Further improvements can be obtained with dynamic precision (variable bit depth). We know we can get away with 8 bits in the early layers without much loss of accuracy.

NYT: http://www.nytimes.com/2014/08/08/science/new-computer-chip-is-designed-to-work-like-the-brain.html

Wired: http://www.wired.com/2014/08/ibm-unveils-a-brain-like-chip-with-4000-processor-cores/

Science (paywall): http://www.sciencemag.org/content/345/6197/668

For a comparison of NeuFlow ConvNets with AER (spiking neuron) ConvNet implementation, look at this: http://yann.lecun.com/exdb/publis/index.html#farabet-frontiersin-12
The processor, named TrueNorth, may eventually excel at calculations that stump today’s supercomputers.
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Awesome music visualisation - let's play ALL the keys!
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866 people
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Timothy Stranex's profile photo
Tadeusz Cantwell's profile photo
Moeketsi Gregory Phala's profile photo
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Godspower Onwudiwe (HIS Excellency)'s profile photo
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Work
Occupation
Systems Engineer, Site Reliability Engineering
Skills
Distributed Systems, Troubleshooting, Python, Linux, Bash, Algorithms
Employment
  • Google
    Site Reliability Engineer, 2013 - present
    Site Reliability Engineering for the Ads Quality systems
  • Naspers
    Senior Software Engineer at MIH Internet Africa, 2009 - 2013
    Developer for the Mocality.com directory, working on the back-end infrastructure with a focus on performance, reliability and monitoring.
  • Naspers
    Search Engine Systems Engineer at 24.com, 2008 - 2008
    Systems Engineer on the SearchSA South African search engine.
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Dublin, Ireland
Previously
Cape Town, South Africa - Durban, South Africa
Apps with Google+ Sign-in
Story
Tagline
South African Site Reliability Engineer with varied interests
Introduction
Born in Durban, lived Cape Town where I studied up to a masters degree, then worked for 4.5 years developing software and running systems, and then moved in 2013 to Dublin to work for Google as a Site Reliability Engineer.

I'm involved in Improv acting, re-learning classical piano, going to the theatre, kayakng, mindfulness training, and teaching programming skills to kids at Coder Dojo.  Also, juggling and left-handed writing.  Also recently been doing hiking and sport climbing (mostly in South Africa), Swing and Salsa dancing.
Bragging rights
South African. Lived in Cape Town. Always open to trying something new. Works for Google :-)
Education
  • University of Cape Town
    Master of Science: Bioinformatics, 2006 - 2008
  • University of Cape Town
    Bachelor of Science Honours: Applied Mathematics, 2005 - 2005
  • University of Cape Town
    Bachelor of Science: Computer Science, Physics, Applied Mathematics, 2001 - 2004
Graham Poulter's +1's are the things they like, agree with, or want to recommend.
The Kiss - Gustav Klimt - Google Cultural Institute
www.google.com

“The Kiss”, probably the most popular work by Gustav Klimt, was first exhibited in 1908 at the Kunstschau art exhibition on the site of toda

Osmos HD
market.android.com

*** 66% off for a limited time in celebration of the Autumnal Equinox! Happy Fall, everyone! *** “Named as Game of the Year for a reason, Os

Humble Image Comics Bundle
www.humblebundle.com

Image Comics has an instant digital collection for you in one convenient bundle. Pay what you want for titles like Morning Glories and East

Google Übersetzer
market.android.com

Durchbrechen Sie mit Google Übersetzer Sprachbarrieren:• Übersetzung in 80 Sprachen. • Unterhalten Sie sich so wie immer und überlassen Sie

漢拼漢英詞典(原名:瀚評漢英詞典)
market.android.com

Hanping Chinese DictionaryAndroid 上最受歡迎的中文普通話字典。關於如何獲取專業版:http://goo.gl/YGonR★ 搜索漢字,注音或是英文。還能顯示注音(Bopomofo) ★ 支持簡體以及正體中字★ 實時搜索 - 當你輸入時自動更新顯示

Auralux
market.android.com

Cloud save support across devices with Google Games! Achievements and Leaderboards support! Access leaderboards in Speed and Nova Mode to co

Minimalism - Mark Manson
markmanson.net

What minimalism is and how you can apply it to your life to become more happy

Love is . . . ‘almost like a psychological disorder’
www.irishtimes.com

Love might be good for the heart, and even your mood, but it is in the brain where the drama really plays out

Hangouts
market.android.com

Los Hangouts dan vida a las conversaciones privadas y en grupo con fotos, emojis y videollamadas gratis. Conéctate con amigos a través de co

Annual Meeting 2014
google.com

The scientific community is nervous. It’s not that the climate is changing; we know that already. What has everyone jumpy is new, undeniable

The NASA Studies on Napping
priceonomics.com

The data behind why napping is considered good for your productivity.

NASA | GPM: Engineering Next Generation Observations of Rain and Snow
www.youtube.com

For more information: http://www.nasa.gov/content/goddard/ready-set-space-nasas-gpm-satellite-begins-journey For the past three years, the G

Borgodoro
plus.google.com

chocolate, food, opensource

Headspace (on-the-go)
market.android.com

Ever wanted to sleep better, feel calmer, focus more or just get some relief from that busy mind? Well it's probably time to get some headsp

For South Africans Abroad: A Guide to Voting in the 2014 Elections
www.sapeople.com

A guide for South African expats on everything you need to know in order to vote abroad in the 2014 national elections.

Scientists Discover a Jewel at the Heart of Quantum Physics - Wired Science
www.wired.com

“This is completely new and very much simpler than anything that has been done before,” said Andrew Hodges, a mathematical physicist at Oxfo

Emily's Pinnacles
www.google.com

Impressive hard coral formations found here provide the building blocks for the reef. (Source)

Field Trip - Grand Canal Dock
fieldtripper.com

Author: Claudia Rodríguez. If life were perfect, I'd be living in a penthouse apartment overlooking The Grand Canal Dock with its theater -

Good World
plus.google.com

Good World hasn't shared anything on this page with you.

Headspace | Guided Meditation & Mindfulness App | Headspace
www.getsomeheadspace.com

Try the Free Guided Meditation App and Learn how to unwind using Meditation and Mindfulness techniques with Andy Puddicombe & the Headspace

The Pistachio ice cream is amazing, best we ever tasted. Only downside is a bit unfriendly to tourists (heaped servings for locals only).
Public - 8 months ago
reviewed 8 months ago
Authentic Neapolitan pizza, all fresh dough and ingredients in wood fired oven. According to our B&B host there's only about 3 places in Florence out of hundreds that are good for pizza, this being one of them.
Public - 8 months ago
reviewed 8 months ago
American style burger, plenty to eat
Public - 11 months ago
reviewed 11 months ago
11 reviews
Map
Map
Map
Main dishes seemed to us overpriced for the quality (we had the wild boar, the risotto). waitress/maître d seemed overly involved, maybe because it was otherwise empty. Antipasti were small and expensive, but very good. Been advised that the desserts, esp. cheesecake are excellent.
Public - 8 months ago
reviewed 8 months ago
Service is slow. Beer is good. Food overpriced.
Public - 4 years ago
reviewed 4 years ago