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QUESTION
I am trying to implement some parallel jobs using concurrent.futures
. Each worker requires a copy of a TensorFlow model and some data. I implemented it in the following way (MWE)
ANSWER
Answered 2021-Feb-06 at 17:17I modified the code such that it sends the path of the model than the model itself to the child processes. And it works.
QUESTION
I need to use encoder-decoder structure to predict 2D trajectories. As almost all available tutorials are related to NLP -with sparse vectors-, I couldn't be sure about how to adapt the solutions to a continuous data.
In addition to my ignorance in seqence-to-sequence models, embedding
process for words confused me more. I have a dataset that consists of 3,000,000 samples each having x-y
coordinates (-1, 1) with 125
observations, which means the shape of each sample is (125, 2)
. I thought I could think of this as 125 words with 2 dimensional already embedded words, but the encoder and the decoder in this Keras Tutorial expect 3D arrays as (num_pairs, max_english_sentence_length, num_english_characters)
.
I doubt I need to train each sample (125, 2)
separately with this model, as the way Google's search bar does with only one word written.
As far as I understood, an encoder is many-to-one
type model and a decoder is one-to-many
type model. I need to get a memory state c
and a hiddenstate h
as vectors(?). Then I should use those vectors as input to decoder and extract predictions in the shape of (x,y) as many as I determine as encoder output.
I'd be so thankful if someone could give an example of an encoder-decoder LSTM architecture over the shape of my dataset, especially in terms of dimensions required for encoder-decoder inputs and outputs, particulary on Keras model if possible.
...ANSWER
Answered 2020-Dec-12 at 22:42I assume you want to forecast 50 time steps with the 125 previous ones (as an example). I give you the most basic Encoder-Decoder Structure for time Series but it can be improved (with Luong Attention for instance).
QUESTION
I am trying to calculate big primes (for fun) on my computer. So far, I have got to a point where it can calculate the primes. However, I am wondering how I can store them and make it so that when the code restarts it continues where it left off. Here is my code:
...ANSWER
Answered 2020-Dec-05 at 05:32You're algorithm is suffiently slow that storing and restarting won't be of much value as it bottoms out quickly. However, it's still a good exercise.
First, this line in your code isn't optimal:
QUESTION
Is there any problem when creating partitions of a table which has got seqence (nextval) as one of its field in postgresql 12?
Regards, Seenu.
...ANSWER
Answered 2020-Jun-18 at 07:00If you define a bigserial
or identity column in a partitioned table, all partitions you create will share the same sequence. Consequently, auto-generated values will be unique across the whole partitioned table.
QUESTION
I am currently writing a simple program in C as a learning exrcise. Unfortunately, I get segmentation error when I try to write out measured times to file. I have no idea what can cause that. I tried debugging it with gdb, but it made me even more confused as it show 'strtok' as the source of error. Below is code that I am using. I would be extremely grateful for any help.
main.c
...ANSWER
Answered 2020-Mar-12 at 08:33You have lots of problems with allocation sizes.
QUESTION
I want to use GPT-2 to make a text classifier model. I am not really sure what head should I add after I extracted features through the GPT-2. for eample I have a sequence.
...ANSWER
Answered 2020-Mar-07 at 04:51" so I can not do what as the paper said for a classification task just add a fully connected layer in the tail." - This is the answer to your question.
Usually, transformers like BERT and Roberta, have bidirectional self-attention and they have the [CLS] token where we feed in to the classfier. Since GPT-2 is left-right you need to feed the final token of the embeddings sequence.
P.S - Can you put the link to the paper.
QUESTION
I'm trying to do some word-level text generation and stuck with the foloowing problem:
My input looks like this:
...ANSWER
Answered 2019-Apr-02 at 09:16You input x_seq
should be one numpy array of shape (batch_size, seq_len)
. Try adding x_seq = np.array(x_seq)
.
QUESTION
In python, it is possible to define a function taking an arbitrary number of positional arguments like so:
...ANSWER
Answered 2019-Jan-24 at 16:58Why not? The thing about tuple is, that you can not change it after creation. This allows to increase speed of executing your script, and you do not really need a list for your function arguments, because you do not really need to modify the given arguments of a function. Would you need append or remove methods for your arguments? At most cases it would be no. Do you want your program run faster. That would be yes. And that's the way the most people would prefer to have things. The *args thing returns tuple because of that, and if you really need a list, you can transform it with one line of code!
QUESTION
I need to use a certain program, to validate some of my results. I am relatively new in Python. The output is so different for each entry, see a snippit below:
...ANSWER
Answered 2018-Apr-22 at 14:12If the Phobius output is stored in a file, change "Phobius_output" to your filename, then the following code should work:
QUESTION
I am doing a university project in Bioinformatics and have come across a really strange situation which I just don't understand.
To optimize CPU performance of a function which calculates the hash value of a sub-sequence in a bio-sequnce I replaced the following:
...ANSWER
Answered 2018-Jan-17 at 07:54I can really see only two options.
Apparently, your code still does the same thing as before - 4k-i-1 is always the same number no matter how you calculate it. Or is it? The new calculation yields an integer, and you multiply it by Phi. Is it possible that this results in the Phi value being cast to an integer for multiplication purposes? (Seems unlikely, but try casting the (1<<...)
to double just to see). If the value is not interpreted the same, then this may influence the number of collisions in the hash table, and therefore the memory.
A variation on the above is that (1 << (2*(k-i-1)))
has not the same range of powf()
because of data type limitations; you should check the maximum possible value depending on k. It should be the case that k-i-1
is always positive or zero, and always below 31 (or is it 30?), or 63 depending on integer size.
You can however precalculate powf. This gives you the best of both worlds: fast calculation and certainly correct results. If the index is always positive, before in the initialization you run
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