lpage

19 ms·

121.
by lpage 10y ago
Yup. Incidentally this is exactly the same effect that makes model selection within a portfolio challenging. Two worthwhile reads on that front: the multiple comparison problem [1] and regression towards the mean [2]. Regardless of your o
122.
by lpage 10y ago
I mostly agree with this. Treating markets as an exercise purely in data science is a _bad idea_. Risking money without a solid understanding of market mechanics and trading conventions is a recipe for disaster. Taking a Bayesian view won&#
123.
Instead of Painkillers, Some Doctors Are Prescribing Virtual Reality(smithsonianmag.com)
2 points by lpage 10y ago|0 comments
124.
by lpage 10y ago
Yup, as described in TAOCP vol 2 as well.
125.
by lpage 10y ago
PAM is great, and it's especially great as a layer of indirection, but I can't agree with your overall point that using PAM = problem solved. To your no harder than LAMP point, most teams can't competently manage a security
126.
A Desperate Search for Gold After Brazil's Worst Mining Disaster Ever(bloomberg.com)
2 points by lpage 10y ago|0 comments
127.
by lpage 10y ago
> Outsourcing them is not the answer It very much is, if you're outsourcing to someone who can do it with greater competence than the average team can. Keeping current on the crypto, designing with the ability to sunset algorithms
128.
Newborn Exoplanet Discovered Around Young Star(caltech.edu)
4 points by lpage 10y ago|0 comments
129.
by lpage 10y ago
> all the jobs that involve picking up something and putting it somewhere else The a well phrased name for the superset containing automated freight and logistics. As discussed in https://news.ycombinator.com/item?id=1156
130.
by lpage 10y ago
The litany of contradictory or bad information on thorium reactors (and nuclear in general) is astounding. That's probably a function of both how polarizing nuclear energy is as a topic, and how nuanced the science actually is. First o
131.
by lpage 10y ago
Yes that's totally correct but they're factoring the entire reinsurance/reinvestment pipeline into how aggressively they can price the policy in the first place.
132.
by lpage 10y ago
Assuming that insurance is correctly priced, buying a policy in any form is negative expected value. The companies that write such policies would slowly bleed dry if that wasn't the case. However, that's irrelevant unless you have
133.
by lpage 10y ago
Obligatory link to the highly approachable and all around amazing http://nand2tetris.org , which will get you to the level of FPGA knowledge necessary to tackle projects like this.
134.
by lpage 10y ago
You might be surprised (when talking about the U.S equities exchanges at least): http://anova-tech.com/wp-content/uploads/2014/09/market-data... . The LoS distances in NY are on the order of 5-30mi and th
135.
by lpage 10y ago
Previous discussion on HN - not sure why it got killed as a dupe: https://news.ycombinator.com/item?id=11926084
136.
by lpage 10y ago
A lot of this is predicated on the practicality of writing contracts in conventional code, so let's talk about the state of writing "bug free systems," and the cost. In some cases, there are options that come pretty close. Al
137.
by lpage 10y ago
Good lawyers don't write overly complicated contracts, and they don't speak in legalese. The concepts covered within the contract might be complex, but the writing itself is deliberately readable. Complex things are brittle. Cle
138.
by lpage 10y ago
In other compression news, Apple open sourced their implementation of lzfse yesterday: https://github.com/lzfse/lzfse . It's based on a relatively new type of coding - asymmetric numeral systems. Huffman coding is
139.
Why do women leave engineering?(news.mit.edu)
2 points by lpage 10y ago|0 comments
140.
by lpage 10y ago
Correction to my post above: I used the word "parallax" poorly to refer to the offset between the detectors - localization is most definitely not done via parallax. It's arrival time + some signal processing, so with two dete
141.
by lpage 10y ago
For those curious about the future of LIGO... At present there are two LIGO facilities - one in Hanford, Washington and another in Livingston, Louisiana. This is necessary for both denoising (it's unlikely that a seismic event or rando
142.
by lpage 10y ago
> Such data is serially correlated (it's not good old iid) so already it looks like you have poisoned the test set with information from the training set. Kind of. If it was that simple making money off of an autoregressive model
143.
Solving the Enigma: History of the Cryptanalytic Bombe [pdf](nsa.gov)
2 points by lpage 10y ago|0 comments
144.
by lpage 10y ago
> Knowing when you don't know the answer is something that has been lacking Definitely, and I'm not sure why that space isn't getting more attention. For RL there's KWIK (knows what it knows) http://www.r
145.
by lpage 10y ago
For anyone interested, the class, which covers interactive intelligence and knowledge based AI, is freely available at https://www.udacity.com/course/knowledge-based-ai-cognitive-... . It's a great starting point
146.
by lpage 11y ago
Yes, but pruning (not considering everything) is as old as game tree search. Previous Go AIs used MCTS as well. What's new in AlphaGo is a more sophisticated approach to scoring game boards - policy networks that help the AI prune even
147.
by lpage 11y ago
> he will later point out to as achieving very good results some 20 moves later This. It's a fairly common feature of any AI that uses some form of tree search/minimax, and the effect is very pronounced in chess. Even the bes
148.
by lpage 11y ago
It's definitely possible but we're not updating real time at the moment...that will change soon. We can add endpoints to return the sentiment on a single story/collection of comments. Shoot me an e-mail (link in profile) and
149.
by lpage 11y ago
Sorry about that. Design isn't my wheelhouse but I updated it to what google tells me is a colorblind friendly palette. I would definitely appreciate it if you could take a look and let me know how it is.
150.
by lpage 11y ago
> Most of the comments seem neutral to negative to me? Shameless plug, thanks to HackerMoods [1] I can quantify that statement: 0.85 neutral, 0.08 positive, 0.07 negative. The average Show HN is 0.17 positive and 0.04 negative, so your

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