EMD | Earth Mover 's Distance between two distributions using Scipy
kandi X-RAY | EMD Summary
kandi X-RAY | EMD Summary
This code computes the Earth Mover's Distance, as explained here: This is done using numpy, scipy (minimize). There is a simple example of two distributions computed by getExampleSignatures() This example is chosen in order to compare the result with a C implementation found here: My code is not designed to be fast. It's designed to be verbose, making it easier to understand how solving for the EMD works. I recommend using other packages like PyEMD or FastEMD if you want to use it in your projects.
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Top functions reviewed by kandi - BETA
- Do the example of Gaussian histogram example
- Generates example of Gaussian histogram
- R Computes the flow matrix for a given flow matrix
- Compute the distance matrix between two features
- Compute the EMD of the flow
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- EMD function
- Do the rubner comparison
- Get example signatures
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Trending Discussions on EMD
QUESTION
This code works. It throws an error on the first getClipFile, because ffmpeg hasn't completed. I kind of understand that, but also it's running again somehow?
I want to make it run once, after the my bash script has completed. I also cannot understand how to simply wrap it all in a function and just wait on it.
Thanks! The JS:
...ANSWER
Answered 2021-May-31 at 21:55You need to wait for the end event before calling getClipFile(). You're calling it every time you get a buffer of data.
QUESTION
I have a data set and list that I have been working with. I have been trying to create a separate graph for each ID in my list l. I would like to print A = 1 in a graph for A, B = 2 in a graph for B, etc. In my actual data set the IDs are repeated throughout the list different values, and ideally I would like to have all the values for one ID from the list printed on the graph associated that ID.
This is what I have tried before, but when I try to see the plots I get the error
...ANSWER
Answered 2021-May-21 at 21:53Based on your reproducible example you could do this:
QUESTION
I'm writing a bot for Discord in Python (Python 39). I need a bot to moderate my server in Discord. Here is the code of the bot itself (without the token)
...ANSWER
Answered 2021-Apr-27 at 20:58Your issue is on the final line, you typed emd instead of emb.
QUESTION
I have a really long query and I'm finding that my NOT is not excluding what's in parenthesis after the NOT.
I saw Exclude and where not exists, but I'd have to re-select for that, and there's too many complicatedly joined tables in what I selected already, plus one table is very big and takes a long time to select what I have already, so I can't re-select because it will make the query take too long. How do I get this exclusion to work?
...ANSWER
Answered 2021-Apr-05 at 16:48I think I figured it out: "NOT acts on one condition. To negate two or more conditions, repeat the NOT for each condition," from not on two things.
This seems to work:
QUESTION
This ANTLR4 parser grammar errors a 'no viable alternative' error when I try to parse an input. The only rules I know of that matches the part of the input with the error are the rules 'retblock_expr' and 'block_expr'. I have put 'retblock_expr' infront of 'block_expr' and put 'non_assign_expr' infront of 'retblock_expr' but it still throws the error.
input:
print(do { return a[3] })
full error:
line 1:11 no viable alternative at input '(do { return'
parser grammar:
...ANSWER
Answered 2021-Mar-27 at 14:13Your PRINT token can only be matched by the blk_expr rule through this path:
There is no path for retblock_expr to recognize anything that begins with the PRINT token.
As a result, it will not matter which order you have elk_expr or retblock_expr.
There is no parser rule in your grammar that will match a PRINT token followed by a LPR token. a block_expr is matched by the program rule, and it only matches (ignoring wsp) block_expr or retblock_expr. Neither of these have alternatives that begin with an LPR token, so ANTLR can't match that token.
print(...) would normally be matched as a function call expression that accepts 0 or more comma-separated parameters. You have no sure rule/alternative defined. (I'd guess that it should be an alternative on either retblock_expr or block_expr
That's the immediate cause of this error. ANTLR really does not have any rule/alternative that can accept a LPR token in this position.
QUESTION
When I run my grammar (lexer and parser) in powershell, it produces these errors:
...ANSWER
Answered 2021-Mar-23 at 10:50Both global and a are listed in your grammer under kwr rule.
kwr is mentioned in the inl rule which isn't used anywhere. So your parser don't know how to deal with inl and don't know what to do with two inl chained together (global a)
QUESTION
I want to calculate the distance between images in one distribution, for more explanation if we have MNIST data set I want to calculate the distance between them and it will be high because the images are varied, images belong to class 1 and others belong to class 2 and so on ... and the distance between the images in the same class for example class 1 is will be low.
So, how I can do this? and whats appropriate distance measure for this? is KL or EMD or another measure?
Thank you.
...ANSWER
Answered 2020-Nov-18 at 23:17You can look into triplet loss for minimizing embedding distance between similar class and maximize embedding distance between different classes. MNIST example and explanation links,
https://www.tensorflow.org/addons/tutorials/losses_triplet
https://towardsdatascience.com/contrasting-contrastive-loss-functions-3c13ca5f055e
https://gombru.github.io/2019/04/03/ranking_loss/
Another approach is to use general pretrained image classifier convolutional layers to extract important features of images and flatten output into a vector. This is similar to word embeddings where distance can be calculated. Similarly, using this embedding from image can be used to calculate similarity with others with various distance methods such as Cosine Distance, Euclidean Distance.
This repo is useful for deep learning based image similarity,
https://github.com/ryanfwy/image-similarity
Some alternate method,
You can try repo below for image hashing to get image similarity based on various methods. Likely this will not work good various distortions and variations.
https://github.com/JohannesBuchner/imagehash
Image similarity with Earth Mover Distance,
QUESTION
I read a list of files as below:
...ANSWER
Answered 2020-Oct-05 at 19:26Try this (updated):
QUESTION
I have a folder full of csv files that I have read and turned into matrices.
...ANSWER
Answered 2020-Sep-09 at 23:24We can use a nested lapply if we want to do the pairwise emd on all combinations of list elements
QUESTION
I am new to R so this is probably a basic question. I have been given the script below but I want to automate it;
...ANSWER
Answered 2020-Sep-09 at 16:10Are you looking for something like this:
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Install EMD
You can use EMD like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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