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kandi X-RAY | H5F Summary
kandi X-RAY | H5F Summary
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Top functions reviewed by kandi - BETA
- Function called when the module is finished .
- Run test mode
- Extracts the stacktrace from an Error .
- Process the queue
- get the text of an element
- Run all tests
- Checks whether or not the global or not .
- Escape text for inner text .
- extend from b
- Check if an element is in an array
H5F Key Features
H5F Examples and Code Snippets
Community Discussions
Trending Discussions on H5F
QUESTION
I have a requirement to pick random addresses from a set of predefined ranges in Systemverilog
...ANSWER
Answered 2022-Mar-31 at 14:54Most people are familiar with the sum()
array reduction method, but there are also or()
, and()
, and xor()
reduction methods as well.
QUESTION
I have a h5 file that contains the "catvnoncat" dataset. when I try to run the following code, I get an error which I will include at the bottom. I have tried getting the dataset from three different sources to exclude to possibility of a corrupted file.
What I would like to know is what is causing the problem?
...ANSWER
Answered 2022-Mar-04 at 18:27Your code is looking in the current directory which is not where the file is.
Based on the error message, it looks like you are on windows. Is the file 'train_catvnoncat.h5' in your Downloads folder? Find that file on your system and copy the full path. You can then update this:
QUESTION
I have a 5 d Array with shape of (2, 6, 6, 2, 1) containing differnt kinds of measurements that I feed over a loop. The first dimention (2) corresponds to a physical parameter (negatif / positive pressure), the second one to a certain x position (6 position in total) and the third certain y position (6 position in total) and the two last one corresponding of the measurement of a sensor vs time (2 is the dimension for signal / time vectors) and the 1 is corresponding of the number of sample (that I don't know and could change over the iterations)
For the first while loop I have measurement matrix for one parameter (for exemple Press positive, x=0, y=0) of my experiment and I would like to feed my big matrix over the for loop. I tried to use this function :
...ANSWER
Answered 2022-Jan-08 at 17:28Okay. So, the problem is the size mismatch which occurs because np
expects us to have values which fill all the dimensions. A quick fix is making the values in your 1st-3rd dimensions, for Mes_Press
as 0 (Default).
A sample code is as follows:
QUESTION
I would like to show the data of a hdf5 file in the ImageView() class from pyqtgraph. The bare code of displaying the plot for ImageView() is:
...ANSWER
Answered 2021-Aug-21 at 19:12The error indicates that dataset 'data'
doesn't exist in your HDF5 file. So, we have to figure out why it's not there. :-) You didn't say where you found the example you are running. The one I found in the pyqtgraph/examples
repository has code to create the file in function def createFile(finalSize=2000000000):
.
I assume you ran this code to create test.hdf5
?
If you didn't create the file with the example code, where did you get test.hdf5
?
Either way, here is some code to interrogate your HDF5 file. It will give us dataset names and attributes (shape and dtype). With that info, we can determine the next steps.
QUESTION
I have a table in pytables created as follows:
...ANSWER
Answered 2021-May-20 at 16:48Yes, that behavior is expected. Take a look at this answer to see more detailed example of the same behavior: How does HDF handle the space freed by deleted datasets without repacking. Note that the space will be reclaimed/reused if you add new datasets.
To reclaim the unused space in the file, you have to use a command line utility. There are 2 choices: ptrepack
and h5repack
: Both are used for a number of external file operations. To reduce file size after object deletion, create a new file from the old one as shown below:
ptrepack
utility delivered with PyTables.- Reference here: PyTables ptrepack doc
- Example:
ptrepack file1.h5 file2.h5
(creates file2.h5 from file1.h5)
h5repack
utility from The HDF Group.- Reference here: HDF5 h5repack doc
- Example:
h5repack [OPTIONS] file1.h5 file2.h5
(creates file2.h5 from file1.h5)
Both have options to use a different compression method when creating the new file, so are also handy if you want to convert from compressed to uncompressed (or vice versa)
QUESTION
I am trying to use Huggingface transformer api to load a locally downloaded M-BERT model but it is throwing an exception. I clone this repo: https://huggingface.co/bert-base-multilingual-cased
...ANSWER
Answered 2021-Apr-19 at 22:36As it was already pointed in the comments - your from_pretrained
param should be either id of a model hosted on huggingface.co or a local path:
A path to a directory containing model weights saved using save_pretrained(), e.g., ./my_model_directory/.
See documentation
Looking at your stacktrace it seems like your code is run inside:
/content/drive/My Drive/msc-project/code/model.py
so unless your model is in:
/content/drive/My Drive/msc-project/code/input/bert-base-multilingual-cased/
it won't load.
I would also set the path to be similar to documentation example ie:
bert = TFBertModel.from_pretrained("./input/bert-base-multilingual-cased/")
QUESTION
I'm trying to get the out of the box deep-orientation implementation to work, but no matter how I try playing with the path or the extension of the weight files provided by the authors, it fails to load weights.
I followed the installation instructions, upgraded to tensorflow 2.3.1 to eliminate an error, and tried calling the very first inference command, but I receive the error below.
Command:
...ANSWER
Answered 2021-Mar-18 at 10:58The weights file extensions should be changed from .hdf5.index
and .hdf5.data . . .
to just .index
and .data . . .
.
The call for inference should then be modified accordingly to exclude the .hdf5
part, so e.g.
QUESTION
I am working on a keras denoising neural network that denoise high Dimension x-ray images. The idea is to train on some datasets eg.1,2,3 and after having the weights, another datasets eg.4,5,6 will start with a new training with weights initialized from the previous training. Implementation-wise it works, however the weights resulted from the last rotation perform better only on the datasets that were used to train on in this rotation. Same goes for other rotation.
In other words, weights resutlted from training on dataset: 4,5,6 doesn't give the good results on an image of dataset 1 as intended as the weights that were trained on datasets: 1,2,3. which shouldn't be what I intend to do
The idea is that weights should be tweaked to work with all datasets effectively, as training on the whole dataset doesn't fit into memory.
I tried other solutions such as creating custom generator that takes images from disk and do the training as batches which is very slow as it depends on factors like I/O operations happening on disk or the time complexity of processing functions happening inside the custom keras generator!
Below is a code that shows what I am doing. I have 12 datasets, seperated into 4 checkpoints. data is loaded and training goes and saves final model to an array and next training takes the weights from the previous rotation and continues.
...ANSWER
Answered 2020-Nov-18 at 14:18Your model will forget previous dataset as you train on new dataset.
I read in reinforcement learning, when game are used to train Deep Reinforcement Learning (DRL), then you have to create memory replay, which collect data from different rounds of game, because each round of game has different data, then randomly some of that data is chosen to train model. that way DRL model can learn to play different rounds of game without forgetting previous rounds.
You can try to create a single dataset by taking some random samples from each dataset.
When you train model on new dataset that make sure data from all previous rotation are in current rotation.
Also in transfer learning, when you train model on new dataset, you have to freeze previous layers so that model don`t forget previous training. you are not using transfer learning but still when you start training on 2nd dataset your 1st dataset will slowly be removed from memory of weights.
you can try freezing initial layers of decoder so that they are not updated when extracting feature, assuming all of the dataset contain similar images, that way your model will not forget previous training as in transfer learning. but still when you train on new dataset previous will be forgotten.
QUESTION
I trained a deep model in colab by keras=2.3.1 and tensorflow=2.1.0, I saved my model with JSON and Keras:
...ANSWER
Answered 2020-Sep-18 at 09:59Hi first of all do you need to store your model or your model weights?
To know the difference between that, model.save()
save you weights and structure model and ... but model.save_weights()
just save your weight model, I suggest you see this link for more information.
If you want to save the model, I suggest using model.save("test.hd5")
or model.save(test.hdf5")
and use tensorflow.kears.models.load_model("test.hd5")
to load the model.
QUESTION
I'm trying to create a PyTables table to store 200000 * 200000 matrix in it. I try this code:
...ANSWER
Answered 2020-Aug-30 at 22:38That's a big matrix (300GB if all ints). Likely you will have to write incrementally. (I don't have enough RAM on my system to do it all at one.)
Without seeing your data types, it's hard to give specific advice.
First question: do you really want to create a Table or will an Array suffice?
PyTables has both types. What's the difference?
An Array holds homogeneous data (like a NumPy ndarray) and can have any dimension.
An Table is typically used to hold heterogeneous data (like a NumPy recarray) and is always 2d (really a 1d array of structured types). Tables also support complex queries with the PyTables API.
The key when creating a Table is to either use the description=
or obj=
parameter to describe the structured types (and field names) for each row. I recently posted an answer that shows how to create a Table. Please review. You may find you don't want to create 200000 fields/columns to define the Table. See this answer: different data types for different columns of an array
If you just want to save a matrix of 200000x200000 homogeneous entities, an array is easier. (Given the data size, you probably need to use an EArray, so you can write the data in increments.) I wrote a simple example that creates an EArray with 2000x200000 entities, then adds 3 more sets of data (each 2000 rows; total of 8000 rows).
- The
shape=(0,nrows)
parameter indicates the first axis can be extended, and createsncols
columns. - The
expectedrows=nrows
parameter is important in large datasets to improvie I/O performance.
The resulting HDF5 file is 6GB. Repeat earr.append(arr)
99 times to get 200000 rows. Code below:
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