Posts

The Unreasonable Effectiveness of Recurrent Neural Networks

Generating music, a novel or program source code character by character, simulating a photo sphere by interpolating between still photos, single frame superresolution: http://fastml.com/deep-nets-generating-stuff/ Illustrating what happens inside the mind of deep networks by depicting what it is dreaming about. Nice art. https://karpathy.github.io/2015/05/21/rnn-effectiveness/

Random promotion may be as good as conventional strategies

Another common mistake made by the wrong HR/corporate mindset. http://www.theguardian.com/education/2010/nov/01/random-promotion-research Promotion Systems and Organizational Performance: A Contingency Model, STEVEN E. PHELAN AND ZHIANG LIN, 2001 They've benchmarked the following strategies: up or out absolute & relative performance seniority random And found that random promotion could be just as good for the corporation, or sometimes even better compared to other conventions.

Build a chatbot using deep learning

I always look forward to making natural language processing more intelligent without hardwired rules. I also like the condensed style of the video. Build a Chatbot - ML for Hackers #6 video by Sirajology http://www.wildml.com/2016/04/deep-learning-for-chatbots-part-1-introduction/

Raw meteorological model output

When planning my day, I usually do a sanity check using some of the recent forecasts. It usually is worth it to shuffle around your programs to favor good weather. When in doubt, I usually refer to the results of multiple simulation. meteoview.meteodat.cz/hu96/bin  (daily?), /1h, +>24h met.hu/idojaras/elorejelzes/modellek/inca-hu  (hourly), 1km, +6h, /1h met.hu/idojaras/elorejelzes/modellek/AROME   (00Z, 06Z,12Z,18Z), 2.5km met.hu/idojaras/elorejelzes/modellek/ECMWF  (00Z, 12Z), 16km, /3h met.hu/idojaras/elorejelzes/modellek/WRF  (00Z, 06Z,12Z,18Z), 2.6km nimbus.elte.hu/kutatas/sat/dbcras-en.html (00Z, 12Z), 16km (NDBCRAS), /3h meteor38.elte.hu/wrf/tmp/LHBP meteor38.elte.hu/wrf/maps sat24.com/hu/forecastimages/europa/forecastprecip /3h tornado.metnet.hu/wrf  (06Z) map.metnet.hu http://2.eumet.hu/0-gfs/gfs.php?domain=mo&terkepszam=18&terkeptipus=04 https://www.yr.no/ Do note that some of these pages are not public while o...

Poking TL-WR1043ND v1 back to life

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TL-WR1043ND v1.10 unbricking with serial needles Achievement unlocked. I've purchased a used TP-Link TL-WR1043ND v1.10 for about 6 EUR recently. Although, the price was suspiciously low, I was hoping that the seller might not had enough experience with hardware. He had neither included a model number, nor any usable photos in his ad. You could not see any antenna or connector either, and the thumbnails looked indifferent from the ubiquitous 54Mb/s devices also on sale. Fortunately, I could zoom in just enough on one of them to decode the very long phrase "Ultimate Wireless N Gigabit Router" from the handful of pixels visible and so I closed the deal quickly. You generally do not want to ask questions in such cases. Unfortunately, the device did not show any signs of life other than the power LED and the hardware switched LAN. Neither buttons did anything and I could not see any activity over the ethernet ports either, so it was clear that I had to commence debri...

bkil505a.com

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Bit errors still not a myth

I had this post in draft for a long time now, however it is evergreen. Just consider the recent exploits  focused on RAM leakage. Although, do note that ECC by itself can't give 100% protection against row hammer, so it is only loosely related. An excellent empirical work has been published in 2009 regarding DRAM Errors in the Wild: A Large Scale Field Study . " About a third of machines and over 8% of DIMMs in our fleet saw at least one correctable error per year. " - analysis by  James Hamilton " Besides error rates much higher than expected - which is plenty bad - the study found that error rates were motherboard, not DIMM type or vendor, dependent. This means that some popular mobos have poor EMI hygiene. " - analysis by ZDnet Note that such an event plainly translates to faults on non-ECC machines. So despite the fact that human error is much more probable, it is not unlikely at all that you encounter bit errors in everyday life. Consider the foll...