tfgg

22 ms·

91.
by tfgg 11y ago
Indeed. When I saw a novel proposal for embedding QM inside GR using closed time-like curves (rather than the usual vice-versa), the main problem seemed to be that a GR-computer is potentially _much_ more powerful than a QM-computer, so you
92.
by tfgg 11y ago
Reminds me a lot of various machine learning approaches to molecular dynamics - basically trying to fit a cheap function to the energy landscape. I wonder if the more classical (rather than quantum) nature of these systems makes it more app
93.
by tfgg 11y ago
As a recently departed academic, to vastly generalize, the only people who are research software engineers are perennial postdocs who don't realise yet that their career is a dead end and they're being significantly underpaid for
94.
by tfgg 11y ago
I think it makes more sense that: a) It's Google, they can throw hardware at a problem such as out of memory b) TensorFlow makes methods development so much easier that it's worth the loss of performance c) It's early days an
95.
by tfgg 11y ago
> It seems physicists in general have not had much to say in response to this idea Huh? My impression is that the notion that the current laws of physics are an effective field theory of some more fundamental theory is pretty widespread
96.
by tfgg 11y ago
I've noticed during the HS2 high-speed rail arguments in the UK that one effect of giving more accurate costing up front (which the UK govt appears to have got better at recently) is that people will just double your numbers anyway, du
97.
by tfgg 11y ago
> In contrast, it is easier to learn to avoid the chatrooms where the trolls hang out. (The article mentions bullying on your facebook page, but that is very easy to fix with facebook's privacy settings). Bullying isn't just do
98.
by tfgg 11y ago
I understand the history of copyright, but in general I don't understand why copyright can't be an incentive for governments to create and maintain information products such as maps, just as much as it is for companies/indivi
99.
by tfgg 11y ago
In the past I've used a trap unicode character in a name in a public wiki-style CC-BY licensed database of politicians to confirm that a site was (not maliciously) failing to credit us. This resulted in the person who was using our dat
100.
by tfgg 11y ago
While I agree with the conclusion that mapping data should be free, since it's useful infrastructure and will probably help the entire economy more than it costs to make it free, I don't see how your argument necessarily follows
101.
by tfgg 11y ago
That's the thing, you'd need to demonstrate how "coffee shop / chicken shop" density correlates with house prices over time, and whether it's a predictor or a lagging indicator. There might be better correlator
102.
by tfgg 11y ago
The list of speakers at the "Machine Learning Methods in Materials Modeling" stream at this recent conference [1] are a few people in the area, though some of those are more predicting properties than making atomic potentials. I c
103.
by tfgg 11y ago
I think it's just so unlikely that a group that couldn't be held properly responsible would have AA missiles capable of reaching to normal cruising altitude that it's not normally considered a problem and why MH17 was excepti
104.
by tfgg 11y ago
Everything is being conserved perfectly well in MW/UWF, since you're just evolving a pure wave function with the Hamiltonian operator, guaranteeing conservation of everything that's meant to be conserved.
105.
by tfgg 11y ago
I don't think Many Worlds/Universal Wave Function is actually unpopular amongst physicists. There was a survey (I'll have to find it) that showed it was one of the most popular interpretations. It's appealing for its mat
106.
by tfgg 11y ago
"software engineering" feels broader, like it includes knowing the right aspects of project management and risk for the given project and business needs, beyond just getting something to work.
107.
by tfgg 11y ago
Lovely map. > I once briefly understood why we were doing what we were doing, but that knowledge has since vanished into the ether Looks like generalized barycentric coordinate over the quadrilateral? Sort of like UV mapping, though it&#
108.
by tfgg 11y ago
> We are using different definitions of mass. I'm calling invariant energy mass, you are calling rest energy mass. Modern physics only refers to rest mass [1] as 'mass', otherwise people tend to get confused about how &#x2
109.
by tfgg 11y ago
> I suspect that a combination of those processes adds so much noise that there is no detectable signal left. You can calculate what the non-linearities do to gravitational waves and, in short, this isn't correct.
110.
by tfgg 11y ago
Do you think that those design decisions are not backed by data demonstrating better engagement levels versus other interface layouts? I'm not saying that their interface is perfect, but I don't see how you can make sweeping claim
111.
by tfgg 11y ago
Perhaps that's the subtle humour behind this linguistic change? "I broke your mug on accident", at the fifth word, the listener/reader thinks the other person is about to say "on purpose", but suddenly they say
112.
by tfgg 11y ago
This is an unformed thought, but to me the philosophy of emergence, intelligence and deep learning have something to do with each other. In emergent systems, you have a stack of levels of phenomena, and you can describe the phenomena at one
113.
by tfgg 11y ago
Location: Oxford / London, UK Remote: Yes Willing to relocate: Yes Technologies: Python, C++, Fortran, MongoDB, PostgreSQL, parallel computation, HTML, Javascript, CSS Email: timothy.green+hn@gmail.com Website: http://tfgg.m
114.
by tfgg 11y ago
Virtual particles are an artefact of the calculation method usually used, perturbation theory, and the Feynmann diagrams that produces. They needn't exist with other methods.
115.
by tfgg 11y ago
I don't think so, since the former is about the occurrence of sequences in stochastic, ergodic processes, and the latter is about approximating deterministic functions. It's more like given an infinite number of parameters, you ha
116.
by tfgg 11y ago
Why didn't they contract the BBC? iPlayer works insanely well for live content with live rewind for all their channels, and they covered the 2012 Olympics with rewindable live high-def feeds for every sport.
117.
Politics: A man’s world?(gender-balance.org)
1 points by tfgg 11y ago|0 comments
118.
by tfgg 11y ago
I don't know anyone who uses the long scale scientifically or colloquially in the UK except for the occasional out-of-date pedant. Maybe some of the older generation still think it's ambiguous, I think I remember one of my parents
119.
by tfgg 11y ago
It is a real word, though it's usually used as an adjective[1], and so sounds a bit strange when used as a verb ("to bedraggle")[2], as a native Brit myself, but I get the meaning ("to make bedraggled"). [1] http:&
120.
by tfgg 11y ago
Huh? A moving charge still has a charge. Imagine a charge density described by the function over space and time rho(r,t). Current is defined by the continuity equation Del[J] = - d rho(r,t) / d t (those are partial derivatives). Basica

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