4.14.1 Top new questions this week

4.14.1.1 Object detection and localization using neural network

http://mathematica.stackexchange.com/questions/141598/object-detection-and-localization-using-neural-network

 
Four important computer vision tasks are classification, localization, object detection and instance segmentation (image taken from cs224d course): 
 
 
 
These four tasks are all built on top of the deep  ...
 

- asked by xslittlegrass (30 votes), answered by xslittlegrass (33 votes)

4.14.1.2 Ball Bouncing on Hilly Terrain

http://mathematica.stackexchange.com/questions/141209/ball-bouncing-on-hilly-terrain

 
There is a maple code for the bouncing ball on the given curve. 
 
 
 
I tried to make this animation by using Mathematica 
 
Why does the following code not work? 
 
surf := Sin[x] + (0.2 Cos[4 x + Sin[4  ...
 

- asked by vito (19 votes), answered by Stitch (15 votes)

4.14.1.3 Dataset is 20X slow when adding column heads

http://mathematica.stackexchange.com/questions/141223/dataset-is-20x-slow-when-adding-column-heads

 
I'm trying to use Dataset to explore some large data. I notice that the performance decrease more than 20X by adding heads to the columns. Here is an example: 
 
We generate some data with integers 
 
...
 

- asked by xslittlegrass (14 votes), answered by Mr.Wizard (3 votes)

4.14.1.4 Benchmarking: unexplained switching between high and low performance

http://mathematica.stackexchange.com/questions/141350/benchmarking-unexplained-switching-between-high-and-low-performance

 
tl;dr I am trying to accurately benchmark some vectorized operations, and compare them between systems.  But benchmarking is hard to do well, and I am getting inconsistent results: performance is  ...
 

- asked by Szabolcs 13votes

4.14.1.5 How to visualize attention?

http://mathematica.stackexchange.com/questions/141542/how-to-visualize-attention

 
In the articles about sequence attention we can see images like this: 
 
 
 
Here we see that while translating from French to English, the network attends sequentially to each input state, but sometimes  ...
 

- asked by Alexey Golyshev (12 votes), answered by xslittlegrass (4 votes)

4.14.1.6 Can one create a custom front-end for Mathematica?

http://mathematica.stackexchange.com/questions/141581/can-one-create-a-custom-front-end-for-mathematica

 
I'd like to create my custom front-end for Mathematica. I know there's a console interface (launched as math), which mostly works great, but it can't really provide functionality of e.g. interactive  ...
 

- asked by Ruslan 9votes

4.14.1.7 How to clear Integrate internal memory?

http://mathematica.stackexchange.com/questions/141324/how-to-clear-integrate-internal-memory

 
I noticed that when I call Integrate for the first time, on an integral that I know will take longer than the time limit I give it, it will abort for the first time, as expected when wrapped by  ...
 

- asked by Nasser (9 votes), answered by J. M. (11 votes)