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by katastrofa
Today, 2:19 am
Forum: Off Topic
Topic: archaeology
Replies: 490
Views: 140316

Re: archaeology

Lots of Viking artefacts in Ukraine too. The histories our our countries are deeply intertwined. The famous Viking sword returns to Ukraine, where it was illegally excavated and stolen by smugglers. Lots of artefacts is smuggled to Russia from Ukraine, from the times the region was called Kievan Rus.
by katastrofa
Yesterday, 11:20 pm
Forum: Economics Forum
Topic: EU-UK Trade Discussions 2020
Replies: 25
Views: 8257

Re: EU-UK Trade Discussions 2020

We don't have to either! (Modulo the consequences.)
by katastrofa
September 27th, 2020, 10:40 pm
Forum: Off Topic
Topic: archaeology
Replies: 490
Views: 140316

Re: archaeology

How couldn't they like her? She wrote The Great Song of Brown-nosing for them. The Music Sl** I'm in a very bad mood - did you hear of Stateful Recurrent Neural Networks? I've read that they are great at predicting the future and fitting white noise... Either I'm doing something wrong, or the AI sit...
by katastrofa
September 27th, 2020, 7:20 pm
Forum: Off Topic
Topic: coronavirus kill rate
Replies: 10
Views: 1989

Re: coronavirus kill rate

Testing vs detected cases: https://ourworldindata.org/grapher/covid-19-daily-tests-vs-daily-new-confirmed-cases-per-million?tab=table&time=latest The proportion varies from country to country. Maybe my hypothesis that the recent spike in infections (while no increase in the number of deaths) is due ...
by katastrofa
September 27th, 2020, 1:51 am
Forum: Numerical Methods Forum
Topic: Models for Covid-19
Replies: 438
Views: 26483

Re: Models for Covid-19

I'd say it's better/more intuitive for simulating interventions, such as the 6 person rule or optimising the track and trace system. It doesn't assume the homogeneous mixing of the population like the classic SIR. Still, any realistic model of an epidemic needs its backbone made of an agent-based mo...
by katastrofa
September 27th, 2020, 12:22 am
Forum: Off Topic
Topic: archaeology
Replies: 490
Views: 140316

Re: archaeology

Vikings didn't have horns! It's one of German ancestral myths cherished by the Nazis. It says that pale (or freckled) Vikings on horses invaded the darked-skinned people of the Indu Valley, imposed on them Hinduism, come up with svastika, curry, yoga and all that, and thus started the oldest culture...
by katastrofa
September 26th, 2020, 12:15 am
Forum: Off Topic
Topic: Random photo's
Replies: 1861
Views: 102996

Re: Random photo's

https://lh3.googleusercontent.com/fife/ABSRlIrlomW0IZn3lm1Jo7J5KgDKnDnsuU8fZfGhwygqTn0qY_4x0An_o4ppA9JNqfsXa08EK9MHHrs-tgFFQwlgnePj5ET5qz1Zv7e47UFC-RGjp5JzGc0B3T1ZD_tSZ5TVsdsUxPrNF6X6u5zN0zfZetI7TwVMdRmXoLEXzNTfYekXLY0pS1Ac-yvelVaAB8JyJSk-oIYmBe8GmgT2XnhSJ5D-aoztoSdWv0FHAefurq387GJUzyTGs4m_psnSonvs...
by katastrofa
September 25th, 2020, 11:55 pm
Forum: Numerical Methods Forum
Topic: Machine Learning: Frequency asked Questions
Replies: 26
Views: 4863

Re: Machine Learning: Frequency asked Questions

BTW, the heatmap is sensitivity analysis of the output (i.e. the probability distribution of the classes) to the activations of the last convolutional layer. In simple words, it shows where the model sees those strange things - indeed, in my cat! Strangely, lots of objects are classified as a dishwa...
by katastrofa
September 25th, 2020, 11:52 pm
Forum: Numerical Methods Forum
Topic: Machine Learning: Frequency asked Questions
Replies: 26
Views: 4863

Re: Machine Learning: Frequency asked Questions

I thought the models are better at recognising pets, but my Leela was everything short of a cat: InceptionV3_IMG_6094.JPG ResNet50V2_IMG_6092.JPG InceptionV3_IMG_6090.JPG In other photos or according to other models she was also a capuchin, a black-footed ferret and a titi (a small monkey). I'm star...
by katastrofa
September 25th, 2020, 11:37 pm
Forum: Numerical Methods Forum
Topic: Machine Learning: Frequency asked Questions
Replies: 26
Views: 4863

Re: Machine Learning: Frequency asked Questions

To the other side you mean? MobileNetV2_photographer.jpg A little background: I was hoping to use one of those large Google models for real-time video image recognition after I saw a very impressive demo, but the results I got range from hair-rising to jaw-dropping, e.g. seeing too much (like above ...
by katastrofa
September 24th, 2020, 9:23 pm
Forum: Off Topic
Topic: archaeology
Replies: 490
Views: 140316

Re: archaeology

by katastrofa
September 23rd, 2020, 11:00 pm
Forum: Numerical Methods Forum
Topic: Machine Learning: Frequency asked Questions
Replies: 26
Views: 4863

Re: Machine Learning: Frequency asked Questions

Ta-dah! I particularly like this section - it's almost as muddy as my posts on Wilmott: "The brain is definitely a macroscopic physical system operating on the scales (of time, space, temperature) which differ crucially from the corresponding quantum scales. (The macroscopic quantum physical phenom...
by katastrofa
September 23rd, 2020, 11:40 am
Forum: Off Topic
Topic: Stupid question of the day
Replies: 2369
Views: 173430

Re: Stupid question of the day

Actually, I can see a business opportunity here. I have a professional hair clipper and some practice (I used to cut all man in the family, except my father, who didn't trust me on such fine matters; I had zero casualties). Reminded me of Reservoir Dogs... (this link is to the song, not the drastic ...
by katastrofa
September 23rd, 2020, 11:16 am
Forum: Numerical Methods Forum
Topic: Models for Covid-19
Replies: 438
Views: 26483

Re: Models for Covid-19

One can look at it in different ways from the perspective of mathematics, but I think the answer for you is that in a classic diffusion model you can go in either direction with an equal probability. In a percolation model you can access some sites with a certain probability. Vide anomalous diffusio...
by katastrofa
September 22nd, 2020, 10:29 pm
Forum: Numerical Methods Forum
Topic: Models for Covid-19
Replies: 438
Views: 26483

Re: Models for Covid-19

There is more to life than ODEs but my question is why these reports do not discuss these problems as dynamical systems ("ODEs++") so that other questions can be answered beyond numerical ODEs. I wonder  why no mention is made of the Lyapunov, Poincare-Bendixson theory etc. What happens to the ODEs...
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