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Heikki Arponen
Works at Freelancer
Attended University of Helsinki
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Heikki Arponen

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Do you know what Finnish prisons are like?

I'll give you a hint: they're pretty different from, say, Russian or American prisons...
How did Finland moved having the highest incarceration rate in Europe to having one of its lowest? Part of the answer lies in its open prisons, where prisoners — even those convicted of crimes like rape and murder — can be gradually eased back into normal life.
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Heikki Arponen

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Literally LOLed at this one :)
 
"Captchas are getting hard. Last one wanted to know why I wasn't helping a tortoise that I'd flipped on its back in the middle of the desert."
Source: https://twitter.com/DJBogtrotter/status/573603729578061824
#nerdhumor   #nerdhumour   #scifi   #sciencefiction  
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Hmm... do you get the urge to pull a gun and shoot the display when you're asked these questions +Bob Beattie ;)
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Heikki Arponen

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I think we need stuff like this...
 
Here is a video of social experiment where a Finnish guy blinds his eyes an stands arms open. Signs around him say "Muslim, I trust you. I am a white Finnish man. If you trust me. hug me." 

See yourself what happened. 

https://vimeo.com/120477690
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+Kevin Clift Very touching.
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Heikki Arponen

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Huh... I just figured out what "I'm a little short on cash" means... suppose your bank account shows 0. Take a 100X loan (X=$, €, £ or whatever). Now your account is -100X. Buy a gold watch worth 100X. Now if the value of currency X drops to a half, the gold watch is suddenly worth 200X! Sell it, use half to pay the debt and you've made +100X profit!

So having negative cash means you're shorting cash, similar to short selling stocks... a-ha!! :) 
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Heikki Arponen

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... the feeling when you get pure white/ no yellow in your Cython code... (%%cython --annotate in IPython Notebook)

Feels nice every time! :)
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Not bad... seems like Baidu is doing better than Google on Deep Learning accomplishements (there was the Football World Cup prediction too where Baidu beat Google). 
 
Baidu Research just attained the best computer vision ImageNet classification result! 5.98% error (vs. GoogLeNet's 6.66%). The key to this was our multi-GPU deep learning infrastructure, which by using a mix of model-parallelism and data-parallelism, allows us to train our model 24.7x faster than using only a single GPU. This scale also allows us to use higher-resolution images, and absorb more (synthetic) training data. Paper here: bit.ly/deepimage
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Heikki Arponen

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Worthy adversary for LectureNotes... for anyone who uses a tablet + active digitizer to write math (not capacitive stylus because those are crap).
This is a preview of the next major version of Write. It is updated more fr...
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Interesting platform for anyone interested in time series analysis (well at least financial TS...). Read the blog text to find out more (no ads, I promise).
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FOR HIRE!

I'm now for hire for any kind of mathematical programming/quantitative or data analysis.

Please see my business site (and let me know what you think!).
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Thanks +Kevin Clift! Yes, it's a sort of a word play on "Quantum Mechanics" (my physics backgound) and indeed "Quant" (what I mostly do now) + a mechanic... not sure if it's a bit silly, but what the hell ;)

I did apply for a few jobs with the "devils" some time ago, but realized soon that even applying is a full time job (especially when the banks/funds were not doing too well)... so instead I learned a lot more about coding, finance math and data science and went at it myself. Wouln't mind doing a project for GS though ;)
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Got frustrated with my venerable GPU, so I decided to set up a GPU VM on Amazons EC2 and access it via an Ipython notebook server... blaaaazing fast! ;)
#ipython   #deeplearning  
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The
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Heikki Arponen

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Well I guess Google had no choice but to comply with the law and search warrant, but dammit that's disturbing!! I hope the US government can be sued for unlawful search or something... (well I know nothing about the US law)
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Wikileaks is trying to find out if Google fought the request and why Google didn't notify the affected parties.
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Charlie Hebdo had no problems joking about killings of Muslims, so here's something to think about.

"Here is a thought experiment: Suppose that while the demonstrators stood solemnly at Place de la Republique the other night, holding up their pens and wearing their “je suis charlie” badges, a man stepped out in front brandishing a water pistol and wearing a badge that said “je suis cherif” (the first name of one of the two brothers who gunned down the Charlie Hebdo staff). [...] How would the crowd have reacted?"
Oxford philosopher Brian Klug says the masses of people have turned the victims of the horrific Charlie Hebdo assassination into heroes of France and free speech think they are defining the differe...
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+Heikki Arponen You know what? You're correct and I apologise. When I first read the article that you linked to, there seemed to be a tone of "they got what they deserved" to it. After your comment, I reread it with more care and I see that it did not make that point at all.

The article is a lot more interesting than I originally thought and highlights some of the more subtle issues.
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Education
  • University of Helsinki
    Math PhD, 2009
Story
Tagline
Math PhD Quant and Data Scientist
Introduction
I'm a Finnish mathematician/theoretical physicist with research experience and/or interests in quantitative finance, time series modeling, nonlinear phenomena and turbulence, differential geometry, gauge theories and gravity. I have PhD in math and Master's in theoretical physics, but I consider myself more theoretical physicist than a mathematician.

Currently I work as a freelance quant/data scientist (see my business homepage www.quantmechanics.com).


Work
Occupation
Mathematician and/or Theoretical Physicist
Skills
Math, Python, data science, quantitative analysis
Employment
  • Freelancer
    Solo artist, 2011 - present
  • University of Helsinki
    Postdoc, 2009 - 2011
  • University of Helsinki
    Grad student/researcher, 2002 - 2009
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Gender
Male
Relationship
In a relationship
Other names
Heka
Kannattaa olla varovainen näiden veijarien kanssa. Etenkin herra A.S. kusettaa enemmän kuin korillinen keppanaa... Ensimmäisellä kerralla piti mm. paikata ruostevaurioita, mutta myöhemmin kävi ilmi ettei mitään oltu tehty. Toisella kerralla oltiin hankkimassa ABS anturia Fixusista, ja se maksoi kuulemma 181€. Sanoin, että vien auton pois ja hankin varaosan itse muualta. "Ei sitä voi enää perua, se on jo tilattu!" Itse kuulin puhelun, jossa kaveri sanoi että varaosaa löytyy varastolta! "Ai niiiin joo just joo (seli seli)". Vein auton pois ja soitin itse Fixusille: varaosan hinta olikin 131€! Varskinkin jos hinnasta ei olla sovittu etukäteen tulee mukaan ihmeellisiä lisäkustannuksia...
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hieno maalaistunnelma + kotiruoka!
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aika kalliilta vaikutti mut ei sentään mikään veho...
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Tosi hyvät sapuskat ja reilun kokoiset annokset! Kun olisi vielä kotiinkuljetus...
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Comfortable, nice mood & good food.
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