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Announcing a unified .NET reference experience on docs.microsoft.com
This post was written by Jeff Sandquist, General Manager in the Azure Growth and Ecosystem team.
Almost a year ago, we piloted the .NET Core reference documentation on docs.microsoft.com. Today we are happy to announce our unified .NET API reference experience. We understand that developer productivity is key - from a hobbyist developer, to a startup, to an enterprise. With that in mind, we partnered closely with the Xamarin team to standardize how we document, discover, and navigate .NET APIs at Microsoft.
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Tensorflex: Tensorflow Bindings for The Elixir Programming Language
Tensorflex
The paper detailing Tensorflex was presented at NeurIPS/NIPS 2018 as part of the MLOSS workshop. The paper can be found here.
Contents
How to run
- You need to have the Tensorflow C API installed. Look here for details.
- You also need the C library
libjpeg. If you are using Linux or OSX, it should already be present on your machine, otherwise be sure to install (brew install libjpegfor OSX, andsudo apt-get install libjpeg-devfor Ubuntu). - Simply add Tensorflex to your list of dependencies in
mix.exsand you are good to go!:
{:tensorflex, "~> 0.1.2"}
In case you want the latest development version use this:
{:tensorflex, github: "anshuman23/tensorflex"}
Documentation
Tensorflex contains three main structs which handle different datatypes. These are %Graph, %Matrix and %Tensor. %Graph type structs handle pre-trained graph models, %Matrix handles Tensorflex 2-D matrices, and %Tensor handles Tensorflow Tensor types. The official Tensorflow documentation is present here and do note that this README only briefly discusses Tensorflex functionalities.
read_graph/1:
Used for loading a Tensorflow .pb graph model in Tensorflex.
Reads in a pre-trained Tensorflow protobuf (.pb) Graph model binary file.
Returns a tuple {:ok, %Graph}.
%Graph is an internal Tensorflex struct which holds the name of the graph file and the binary definition data that is read in via the .pb file.
get_graph_ops/1:
Used for listing all the operations in a Tensorflow .pb graph.
Reads in a Tensorflex %Graph struct obtained from read_graph/1.
Returns a list of all the operation names (as strings) that populate the graph model.
create_matrix/3:
Creates a 2-D Tensorflex matrix from custom input specifications.
Takes three input arguments: number of rows in matrix (nrows), number of columns in matrix (ncols), and a list of lists of the data that will form the matrix (datalist).
Returns a %Matrix Tensorflex struct type.
matrix_pos/3:
Used for accessing an element of a Tensorflex matrix.
Takes in three input arguments: a Tensorflex %Matrix struct matrix, and the row (row) and column (col) values of the required element in the matrix. Both row and col here are NOT zero indexed.
Returns the value as float.
size_of_matrix/1:
Used for obtaining the size of a Tensorflex matrix.
Takes a Tensorflex %Matrix struct matrix as input.
Returns a tuple {nrows, ncols} where nrows represents the number of rows of the matrix and ncols represents the number of columns of the matrix.
append_to_matrix/2:
Appends a single row to the back of a Tensorflex matrix.
Takes a Tensorflex %Matrix matrix as input and a single row of data (with the same number of columns as the original matrix) as a list of lists (datalist) to append to the original matrix.
Returns the extended and modified %Matrix struct matrix.
matrix_to_lists/1:
Converts a Tensorflex matrix (back) to a list of lists format.
Takes a Tensorflex %Matrix struct matrix as input.
Returns a list of lists representing the data stored in the matrix.
NOTE: If the matrix contains very high dimensional data, typically obtained from a function like load_csv_as_matrix/2, then it is not recommended to convert the matrix back to a list of lists format due to a possibility of memory errors.
float64_tensor/2, float32_tensor/2, int32_tensor/2:
Creates a TF_DOUBLE, TF_FLOAT, or TF_INT32 tensor from Tensorflex matrices containing the values and dimensions specified.
Takes two arguments: a %Matrix matrix (matrix1) containing the values the tensor should have and another %Matrix matrix (matrix2) containing the dimensions of the required tensor.
Returns a tuple {:ok, %Tensor} where %Tensor represents an internal Tensorflex struct type that is used for holding tensor data and type.
float64_tensor/1, float32_tensor/1, int32_tensor/1, string_tensor/1:
Creates a TF_DOUBLE, TF_FLOAT, TF_INT32, or TF_STRING constant value one-dimensional tensor from the input value specified.
Takes in a float, int or string value (depending on function) as input.
Returns a tuple {:ok, %Tensor} where %Tensor represents an internal Tensorflex struct type that is used for holding tensor data and type.
float64_tensor_alloc/1, float32_tensor_alloc/1, int32_tensor_alloc/1:
Allocates a TF_DOUBLE, TF_FLOAT, or TF_INT32 tensor of specified dimensions.
This function is generally used to allocate output tensors that do not hold any value data yet, but will after the session is run for Inference. Output tensors of the required dimensions are allocated and then passed to the run_session/5 function to hold the output values generated as predictions.
Takes a Tensorflex %Matrix struct matrix as input.
Returns a tuple {:ok, %Tensor} where %Tensor represents an internal Tensorflex struct type that is used for holding the potential tensor data and type.
tensor_datatype/1:
Used to get the datatype of a created tensor.
Takes in a %Tensor struct tensor as input.
Returns a tuple {:ok, datatype} where datatype is an atom representing the list of Tensorflow TF_DataType tensor datatypes. Click here to view a list of all possible datatypes.
load_image_as_tensor/1:
Loads JPEG images into Tensorflex directly as a TF_UINT8 tensor of dimensions image height x image width x number of color channels.
This function is very useful if you wish to do image classification using Convolutional Neural Networks, or other Deep Learning Models. One of the most widely adopted and robust image classification models is the Inception model by Google. It makes classifications on images from over a 1000 classes with highly accurate results. The load_image_as_tensor/1 function is an essential component for the prediction pipeline of the Inception model (and for other similar image classification models) to work in Tensorflex.
Reads in the path to a JPEG image file (.jpg or .jpeg).
Returns a tuple {:ok, %Tensor} where %Tensor represents an internal Tensorflex struct type that is used for holding the tensor data and type. Here the created Tensor is a uint8 tensor (TF_UINT8).
NOTE: For now, only 3 channel RGB JPEG color images can be passed as arguments. Support for grayscale images and other image formats such as PNG will be added in the future.
loads_csv_as_matrix/2:
Loads high-dimensional data from a CSV file as a Tensorflex 2-D matrix in a super-fast manner.
The load_csv_as_matrix/2 function is very fast-- when compared with the Python based pandas library for data science and analysis' function read_csv on the test.csv file from MNIST Kaggle data (source), the following execution times were obtained:
read_csv:2.549233secondsload_csv_as_matrix/2:1.711494seconds
This function takes in 2 arguments: a path to a valid CSV file (filepath) and other optional arguments opts. These include whether or not a header needs to be discarded in the CSV, and what the delimiter type is. These are specified by passing in an atom :true or :false to the header: key, and setting a string value for the delimiter: key. By default, the header is considered to be present (:true) and the delimiter is set to ,.
Returns a %Matrix Tensorflex struct type.
run_session/5:
Runs a Tensorflow session to generate predictions for a given graph, input data, and required input/output operations.
This function is the final step of the Inference (prediction) pipeline and generates output for a given set of input data, a pre-trained graph model, and the specified input and output operations of the graph.
Takes in five arguments: a pre-trained Tensorflow graph .pb model read in from the read_graph/1 function (graph), an input tensor with the dimensions and data required for the input operation of the graph to run (tensor1), an output tensor allocated with the right dimensions (tensor2), the name of the input operation of the graph that needs where the input data is fed (input_opname), and the output operation name in the graph where the outputs are obtained (output_opname). The input tensor is generally created from the matrices manually or using the load_csv_as_matrix/2 function, and then passed through to one of the tensor creation functions. For image classification the load_image_as_tensor/1 can also be used to create the input tensor from an image. The output tensor is created using the tensor allocation functions (generally containing alloc at the end of the function name).
Returns a List of Lists (similar to the matrix_to_lists/1 function) containing the generated predictions as per the output tensor dimensions.
add_scalar_to_matrix/2:
Adds scalar value to matrix.
Takes two arguments: %Matrix matrix and scalar value (int or float)
Returns a %Matrix modified matrix.
subtract_scalar_from_matrix/2:
Subtracts scalar value from matrix.
Takes two arguments: %Matrix matrix and scalar value (int or float)
Returns a %Matrix modified matrix.
multiply_matrix_with_scalar/2:
Multiplies scalar value with matrix.
Takes two arguments: %Matrix matrix and scalar value (int or float)
Returns a %Matrix modified matrix.
divide_matrix_by_scalar/2:
Divides matrix values by scalar.
Takes two arguments: %Matrix matrix and scalar value (int or float)
Returns a %Matrix modified matrix.
add_matrices/2:
Adds two matrices of same dimensions together.
Takes in two %Matrix matrices as arguments.
Returns the resultant %Matrix matrix.
subtract_matrices/2:
Subtracts matrix2 from matrix1.
Takes in two %Matrix matrices as arguments.
Returns the resultant %Matrix matrix.
tensor_to_matrix/1:
Converts the data stored in a 2-D tensor back to a 2-D matrix.
Takes in a single argument as a %Tensor tensor (any TF_Datatype).
Returns a %Matrix 2-D matrix.
NOTE: Tensorflex doesn't currently support 3-D matrices, and therefore tensors that are 3-D (such as created using the load_image_as_tensor/1 function) cannot be converted back to a matrix, yet. Support for 3-D matrices will be added soon.
Examples
Examples are generally added in full description on my blog here. A blog post covering how to do classification on the Iris Dataset is present here.
INCEPTION CNN MODEL EXAMPLE:
Here we will briefly touch upon how to use the Google V3 Inception pre-trained graph model to do image classficiation from over a 1000 classes. First, the Inception V3 model can be downloaded here: http://download.tensorflow.org/models/image/imagenet/inception-2015-12-05.tgz
After unzipping, see that it contains the graphdef .pb file (classify_image_graphdef.pb) which contains our graph definition, a test jpeg image that should identify/classify as a panda (cropped_panda.pb) and a few other files I will detail later.
Now for running this in Tensorflex first the graph is loaded:
iex(1)> {:ok, graph} = Tensorflex.read_graph("classify_image_graph_def.pb")
2018-07-29 00:48:19.849870: W tensorflow/core/framework/op_def_util.cc:346] Op BatchNormWithGlobalNormalization is deprecated. It will cease to work in GraphDef version 9. Use tf.nn.batch_normalization().
{:ok,
%Tensorflex.Graph{
def: #Reference<0.2597534446.2498625538.211058>,
name: "classify_image_graph_def.pb"
}}
Then the cropped_panda image is loaded using the new load_image_as_tensor function:
iex(2)> {:ok, input_tensor} = Tensorflex.load_image_as_tensor("cropped_panda.jpg")
{:ok,
%Tensorflex.Tensor{
datatype: :tf_uint8,
tensor: #Reference<0.2597534446.2498625538.211093>
}}
Then create the output tensor which will hold out output vector values. For the inception model, the output is received as a 1008x1 tensor, as there are 1008 classes in the model:
iex(3)> out_dims = Tensorflex.create_matrix(1,2,[[1008,1]])
%Tensorflex.Matrix{
data: #Reference<0.2597534446.2498625538.211103>,
ncols: 2,
nrows: 1
}
iex(4)> {:ok, output_tensor} = Tensorflex.float32_tensor_alloc(out_dims)
{:ok,
%Tensorflex.Tensor{
datatype: :tf_float,
tensor: #Reference<0.2597534446.2498625538.211116>
}}
Then the output results are read into a list called results. Also, the input operation in the Inception model is DecodeJpeg and the output operation is softmax:
iex(5)> results = Tensorflex.run_session(graph, input_tensor, output_tensor, "DecodeJpeg", "softmax")
2018-07-29 00:51:13.631154: I tensorflow/core/platform/cpu_feature_guard.cc:141] Your CPU supports instructions that this TensorFlow binary was not compiled to use: SSE4.1 SSE4.2 AVX AVX2 FMA
[
[1.059142014128156e-4, 2.8240500250831246e-4, 8.30648496048525e-5,
1.2982363114133477e-4, 7.32232874725014e-5, 8.014426566660404e-5,
6.63459359202534e-5, 0.003170756157487631, 7.931600703159347e-5,
3.707312498590909e-5, 3.0997329304227605e-5, 1.4232713147066534e-4,
1.0381334868725389e-4, 1.1057958181481808e-4, 1.4321311027742922e-4,
1.203602587338537e-4, 1.3130248407833278e-4, 5.850398520124145e-5,
2.641105093061924e-4, 3.1629020668333396e-5, 3.906813799403608e-5,
2.8646905775531195e-5, 2.2863158665131778e-4, 1.2222197256051004e-4,
5.956588938715868e-5, 5.421260357252322e-5, 5.996063555357978e-5,
4.867801326327026e-4, 1.1005574924638495e-4, 2.3433618480339646e-4,
1.3062104699201882e-4, 1.317620772169903e-4, 9.388553007738665e-5,
7.076268957462162e-5, 4.281177825760096e-5, 1.6863139171618968e-4,
9.093972039408982e-5, 2.611844101920724e-4, 2.7584232157096267e-4,
5.157176201464608e-5, 2.144951868103817e-4, 1.3628098531626165e-4,
8.007588621694595e-5, 1.7929042223840952e-4, 2.2831936075817794e-4,
6.216531619429588e-5, 3.736453436431475e-5, 6.782123091397807e-5,
1.1538144462974742e-4, ...]
]
Finally, we need to find which class has the maximum probability and identify it's label. Since results is a List of Lists, it's better to read in the nested list. Then we need to find the index of the element in the new list which as the maximum value. Therefore:
iex(6)> max_prob = List.flatten(results) |> Enum.max
0.8849328756332397
iex(7)> Enum.find_index(results |> List.flatten, fn(x) -> x == max_prob end)
169
We can thus see that the class with the maximum probability predicted (0.8849328756332397) for the image is 169. We will now find what the 169 label corresponds to. For this we can look back into the unzipped Inception folder, where there is a file called imagenet_2012_challenge_label_map_proto.pbtxt. On opening this file, we can find the string class identifier for the 169 class index. This is n02510455 and is present on Line 1556 in the file. Finally, we need to match this string identifier to a set of identification labels by referring to the file imagenet_synset_to_human_label_map.txt file. Here we can see that corresponding to the string class n02510455 the human labels are giant panda, panda, panda bear, coon bear, Ailuropoda melanoleuca (Line 3691 in the file).
Thus, we have correctly identified the animal in the image as a panda using Tensorflex!
RNN LSTM SENTIMENT ANALYSIS MODEL EXAMPLE:
A brief idea of what this example entails:
- The Recurrent Neural Network utilizes Long-Short-Term-Memory (LSTM) cells for holding the state for the data flowing in through the network
- In this example, we utilize the LSTM network for sentiment analysis on movie reviews data in Tensorflex. The trained models are originally created as part of an online tutorial (source) and are present in a Github repository here.
To do sentiment analysis in Tensorflex however, we first need to do some preprocessing and prepare the graph model (.pb) as done multiple times before in other examples. For that, in the examples/rnn-lstm-example directory there are two scripts: freeze.py and create_input_data.py. Prior to explaining the working of these scripts you first need to download the original saved models as well as the datasets:
- For the model, download from here and then store all the 4 model files in the
examples/rnn-lstm-example/modelfolder - For the dataset, download from here. After decompressing, we do not need all the files, just the 2 numpy binaries
wordsList.npyandwordVectors.npy. These will be used to encode our text data intoUTF-8encoding for feeding our RNN as input.
Now, for the Python two scripts: freeze.py and create_input_data.py:
freeze.py: This is used to create ourpbmodel from the Python saved checkpoints. Here we will use the downloaded Python checkpoints' model to create the.pbgraph. Just runningpython freeze.pyafter putting the model files in the correct directory will do the trick. In the same./model/folder, you will now see a file calledfrozen_model_lstm.pb. This is the file which we will load into Tensorflex. In case for some reason you want to skip this step and just get the loaded graph here is a Dropbox linkcreate_input_data.py: Even if we can load our model into Tensorflex, we also need some data to do inference on. For that, we will write our own example sentences and convert them (read encode) to a numeral (int32) format that can be used by the network as input. For that, you can inspect the code in the script to get an understanding of what is happening. Basically, the neural network takes in an input of a24x250int32(matrix) tensor created from text which has been encoded asUTF-8. Again, runningpython create_input_data.pywill give you twocsvfiles (one indicating positive sentiment and the other a negative sentiment) which we will later load into Tensorflex. The two sentences converted are:- Negative sentiment sentence: That movie was terrible.
- Positive sentiment sentence: That movie was the best one I have ever seen.
Both of these get converted to two files inputMatrixPositive.csv and inputMatrixNegative.csv (by create_input_data.py) which we load into Tensorflex next.
Inference in Tensorflex: Now we do sentiment analysis in Tensorflex. A few things to note:
- The input graph operation is named
Placeholder_1 - The output graph operation is named
addand is the eventual result of a matrix multiplication. Of this obtained result we only need the first row - Here the input is going to be a integer valued matrix tensor of dimensions
24x250representing our sentence/review - The output will have 2 columns, as there are 2 classes-- for positive and negative sentiment respectively. Since we will only be needing only the first row we will get our result in a
1x2vector. If the value of the first column is higher than the second column, then the network indicates a positive sentiment otherwise a negative sentiment. All this can be observed in the original repository in a Jupyter notebook here: ```elixir iex(1)> {:ok, graph} = Tensorflex.read_graph "examples/rnn-lstm-example/model/frozen_model_lstm.pb" {:ok, %Tensorflex.Graph{ def: #Reference<0.713975820.1050542081.11558>, name: "examples/rnn-lstm-example/model/frozen_model_lstm.pb" }}
iex(2)> Tensorflex.get_graph_ops graph ["Placeholder_1", "embedding_lookup/params_0", "embedding_lookup", "transpose/perm", "transpose", "rnn/Shape", "rnn/strided_slice/stack", "rnn/strided_slice/stack_1", "rnn/strided_slice/stack_2", "rnn/strided_slice", "rnn/stack/1", "rnn/stack", "rnn/zeros/Const", "rnn/zeros", "rnn/stack_1/1", "rnn/stack_1", "rnn/zeros_1/Const", "rnn/zeros_1", "rnn/Shape_1", "rnn/strided_slice_2/stack", "rnn/strided_slice_2/stack_1", "rnn/strided_slice_2/stack_2", "rnn/strided_slice_2", "rnn/time", "rnn/TensorArray", "rnn/TensorArray_1", "rnn/TensorArrayUnstack/Shape", "rnn/TensorArrayUnstack/strided_slice/stack", "rnn/TensorArrayUnstack/strided_slice/stack_1", "rnn/TensorArrayUnstack/strided_slice/stack_2", "rnn/TensorArrayUnstack/strided_slice", "rnn/TensorArrayUnstack/range/start", "rnn/TensorArrayUnstack/range/delta", "rnn/TensorArrayUnstack/range", "rnn/TensorArrayUnstack/TensorArrayScatter/TensorArrayScatterV3", "rnn/while/Enter", "rnn/while/Enter_1", "rnn/while/Enter_2", "rnn/while/Enter_3", "rnn/while/Merge", "rnn/while/Merge_1", "rnn/while/Merge_2", "rnn/while/Merge_3", "rnn/while/Less/Enter", "rnn/while/Less", "rnn/while/LoopCond", "rnn/while/Switch", "rnn/while/Switch_1", "rnn/while/Switch_2", "rnn/while/Switch_3", ...]
First we will try for positive sentiment:
```elixir
iex(3)> input_vals = Tensorflex.load_csv_as_matrix("examples/rnn-lstm-example/inputMatrixPositive.csv", header: :false)
%Tensorflex.Matrix{
data: #Reference<0.713975820.1050542081.13138>,
ncols: 250,
nrows: 24
}
iex(4)> input_dims = Tensorflex.create_matrix(1,2,[[24,250]])
%Tensorflex.Matrix{
data: #Reference<0.713975820.1050542081.13575>,
ncols: 2,
nrows: 1
}
iex(5)> {:ok, input_tensor} = Tensorflex.int32_tensor(input_vals, input_dims)
{:ok,
%Tensorflex.Tensor{
datatype: :tf_int32,
tensor: #Reference<0.713975820.1050542081.14434>
}}
iex(6)> output_dims = Tensorflex.create_matrix(1,2,[[24,2]])
%Tensorflex.Matrix{
data: #Reference<0.713975820.1050542081.14870>,
ncols: 2,
nrows: 1
}
iex(7)> {:ok, output_tensor} = Tensorflex.float32_tensor_alloc(output_dims)
{:ok,
%Tensorflex.Tensor{
datatype: :tf_float,
tensor: #Reference<0.713975820.1050542081.15363>
}}
We only need the first row, the rest do not indicate anything:
iex(8)> [result_pos | _ ] = Tensorflex.run_session(graph, input_tensor,output_tensor, "Placeholder_1", "add")
[
[4.483788013458252, -1.273943305015564],
[-0.17151066660881042, -2.165886402130127],
[0.9569928646087646, -1.131581425666809],
[0.5669126510620117, -1.3842089176177979],
[-1.4346938133239746, -4.0750861167907715],
[0.4680981934070587, -1.3494354486465454],
[1.068990707397461, -2.0195648670196533],
[3.427264451980591, 0.48857203125953674],
[0.6307879686355591, -2.069119691848755],
[0.35061028599739075, -1.700657844543457],
[3.7612719535827637, 2.421398878097534],
[2.7635951042175293, -0.7214710116386414],
[1.146680235862732, -0.8688814640045166],
[0.8996094465255737, -1.0183486938476563],
[0.23605018854141235, -1.893072247505188],
[2.8790698051452637, -0.37355837225914],
[-1.7325369119644165, -3.6470277309417725],
[-1.687785029411316, -4.903762340545654],
[3.6726789474487305, 0.14170047640800476],
[0.982108473777771, -1.554244875907898],
[2.248904228210449, 1.0617655515670776],
[0.3663095533847809, -3.5266385078430176],
[-1.009346604347229, -2.901120901107788],
[3.0659966468811035, -1.7605335712432861]
]
iex(9)> result_pos
[4.483788013458252, -1.273943305015564]
Thus we can clearly see that the RNN predicts a positive sentiment. For a negative sentiment, next:
iex(10)> input_vals = Tensorflex.load_csv_as_matrix("examples/rnn-lstm-example/inputMatrixNegative.csv", header: :false)
%Tensorflex.Matrix{
data: #Reference<0.713975820.1050542081.16780>,
ncols: 250,
nrows: 24
}
iex(11)> {:ok, input_tensor} = Tensorflex.int32_tensor(input_vals,input_dims)
{:ok,
%Tensorflex.Tensor{
datatype: :tf_int32,
tensor: #Reference<0.713975820.1050542081.16788>
}}
iex(12)> [result_neg|_] = Tensorflex.run_session(graph, input_tensor,output_tensor, "Placeholder_1", "add")
[
[0.7635725736618042, 10.895986557006836],
[2.205151319503784, -0.6267685294151306],
[3.5995595455169678, -0.1240251287817955],
[-1.6063352823257446, -3.586883068084717],
[1.9608432054519653, -3.084211826324463],
[3.772461414337158, -0.19421455264091492],
[3.9185996055603027, 0.4442034661769867],
[3.010765552520752, -1.4757057428359985],
[3.23650860786438, -0.008513949811458588],
[2.263028144836426, -0.7358709573745728],
[0.206748828291893, -2.1945853233337402],
[2.913491725921631, 0.8632720708847046],
[0.15935257077217102, -2.9757845401763916],
[-0.7757357358932495, -2.360766649246216],
[3.7359719276428223, -0.7668198347091675],
[2.2896337509155273, -0.45704856514930725],
[-1.5497230291366577, -4.42919921875],
[-2.8478822708129883, -5.541027545928955],
[1.894787073135376, -0.8441318273544312],
[0.15720489621162415, -2.699129819869995],
[-0.18114641308784485, -2.988100051879883],
[3.342879056930542, 2.1714375019073486],
[2.906526565551758, 0.18969044089317322],
[0.8568912744522095, -1.7559258937835693]
]
iex(13)> result_neg
[0.7635725736618042, 10.895986557006836]
Thus we can clearly see that in this case the RNN indicates negative sentiment! Our model works!
Pull Requests Made
- In chronological order:
- PR #2: Renamed app to Tensorflex from TensorflEx
- PR #3: Added support for reading pretrained graph definition files
- PR #4: Merged all support functions into read_graph; returning atoms
- PR #6: Returning list of op names in get_graph_ops and extended error atoms to all TF error codes
- PR #7: Added tensor support for strings and for getting TF_DataType
- PR #8: Added matrix functions, numeral tensors, better returns & removed unnecessary POC code
- PR #9: Added freeze graph Python example
- PR #10: Tensors of TF_FLOAT and TF_DOUBLE type both supported
- PR #11: Tensor allocations and Tensorflow Session support added
- PR #12: Fixed issue regarding printing of outputs
- PR #13: Added another example for blog post
- PR #14: Added graph file check before loading
- PR #15: Added tests
- PR #16: Add linker flags for MacOS
- PR #18: Added image loading capabilities (as 3D uint8 Tensors)
- PR #19: Wrapped references around structs
- PR #20: Moved basic C error checking to Elixir
- PR #21: Added Keras example
- PR #22: Added "append" function for matrices
- PR #23: Added fast C based direct CSV-to-matrix functionality with options
- PR #24: Added TF_INT32 tensors and tensor allocators
- PR #25: Added RNN (LSTM) example
- PR #26: Added documentation
- PR #28: Added improved tests
- PR #29: Adding metadata to mix.exs
- PR #31: Update nifs.ex
- PR #32: Fixed indentation and corrected warnings
- PR #35: Added new matrix operations
- PR #36: Fixed bugs in C code
- PR #37: Added tensor_to_matrix/1 (with tests/docs)
- PR #38: Create CONTRIBUTING.md
- PR #39: Formatted C code
Author: anshuman23
Source code: https://github.com/anshuman23/tensorflex
License: Apache-2.0 license
1602560783
jQuery Ajax CRUD in ASP.NET Core MVC with Modal Popup
In this article, we’ll discuss how to use jQuery Ajax for ASP.NET Core MVC CRUD Operations using Bootstrap Modal. With jQuery Ajax, we can make HTTP request to controller action methods without reloading the entire page, like a single page application.
To demonstrate CRUD operations – insert, update, delete and retrieve, the project will be dealing with details of a normal bank transaction. GitHub repository for this demo project : https://bit.ly/33KTJAu.
Sub-topics discussed :
- Form design for insert and update operation.
- Display forms in modal popup dialog.
- Form post using jQuery Ajax.
- Implement MVC CRUD operations with jQuery Ajax.
- Loading spinner in .NET Core MVC.
- Prevent direct access to MVC action method.
Create ASP.NET Core MVC Project
In Visual Studio 2019, Go to File > New > Project (Ctrl + Shift + N).
From new project window, Select Asp.Net Core Web Application_._
Once you provide the project name and location. Select Web Application(Model-View-Controller) and uncheck HTTPS Configuration. Above steps will create a brand new ASP.NET Core MVC project.
Setup a Database
Let’s create a database for this application using Entity Framework Core. For that we’ve to install corresponding NuGet Packages. Right click on project from solution explorer, select Manage NuGet Packages_,_ From browse tab, install following 3 packages.
Now let’s define DB model class file – /Models/TransactionModel.cs.
public class TransactionModel
{
[Key]
public int TransactionId { get; set; }
[Column(TypeName ="nvarchar(12)")]
[DisplayName("Account Number")]
[Required(ErrorMessage ="This Field is required.")]
[MaxLength(12,ErrorMessage ="Maximum 12 characters only")]
public string AccountNumber { get; set; }
[Column(TypeName ="nvarchar(100)")]
[DisplayName("Beneficiary Name")]
[Required(ErrorMessage = "This Field is required.")]
public string BeneficiaryName { get; set; }
[Column(TypeName ="nvarchar(100)")]
[DisplayName("Bank Name")]
[Required(ErrorMessage = "This Field is required.")]
public string BankName { get; set; }
[Column(TypeName ="nvarchar(11)")]
[DisplayName("SWIFT Code")]
[Required(ErrorMessage = "This Field is required.")]
[MaxLength(11)]
public string SWIFTCode { get; set; }
[DisplayName("Amount")]
[Required(ErrorMessage = "This Field is required.")]
public int Amount { get; set; }
[DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}")]
public DateTime Date { get; set; }
}
C#Copy
Here we’ve defined model properties for the transaction with proper validation. Now let’s define DbContextclass for EF Core.
#asp.net core article #asp.net core #add loading spinner in asp.net core #asp.net core crud without reloading #asp.net core jquery ajax form #asp.net core modal dialog #asp.net core mvc crud using jquery ajax #asp.net core mvc with jquery and ajax #asp.net core popup window #bootstrap modal popup in asp.net core mvc. bootstrap modal popup in asp.net core #delete and viewall in asp.net core #jquery ajax - insert #jquery ajax form post #modal popup dialog in asp.net core #no direct access action method #update #validation in modal popup
1597512540
Announcing a unified .NET reference experience on docs.microsoft.com
This post was written by Jeff Sandquist, General Manager in the Azure Growth and Ecosystem team.
Almost a year ago, we piloted the .NET Core reference documentation on docs.microsoft.com. Today we are happy to announce our unified .NET API reference experience. We understand that developer productivity is key - from a hobbyist developer, to a startup, to an enterprise. With that in mind, we partnered closely with the Xamarin team to standardize how we document, discover, and navigate .NET APIs at Microsoft.
#.net
1602668764
Announcing Entity Framework Core (EF Core) 5 RC2
Today, the Entity Framework Core team announces the second release candidate (RC2) of EF Core 5.0. This is a feature complete release candidate of EF Core 5.0 and ships with a “go live” license. You are supported using it in production. This is a great opportunity to start using EF Core 5.0 early while there is still time to fix remaining issues. We’re looking for reports of any remaining critical bugs that should be fixed before the final release.
Prerequisites
EF Core 5.0 will not run on .NET Standard 2.0 platforms, including .NET Framework.
- The release candidates of EF Core 5.0 require .NET Standard 2.1.
- This means that EF Core 5.0 will run on .NET Core 3.1 and does not require .NET 5.
- To summarize: EF Core 5.0 runs on platforms that support .NET Standard 2.1.
How to get EF Core 5.0 Release Candidate 2
EF Core is distributed exclusively as a set of NuGet packages. For example, to add the SQL Server provider to your project, you can use the following command using the dotnet tool:
dotnet add package Microsoft.EntityFrameworkCore.SqlServer --version 5.0.0-rc.2.20475.6
#.net #.net core #.net framework #asp.net #c# #entity framework #announcement #asp.net core #entity framework core
1613555124
How to Uninstall Microsoft Security Essentials? - www.office.com/setup
Microsoft Security Essential program is not designed by Microsoft and it is fake security software. If the user wants more information, then contact Microsoft team through www.office.com/setup download the get free key for office.
Method To Uninstall Microsoft Security Essential:
- Uninstall Anti-Spyware Programs:
- Download Microsoft’s Fix It tool:
- Manually Delete Microsoft Security Essentials by Modifying Registry Keys:
When you complete the backup procedure, then you should click on Start option and then select File Explorer. Now, you should go to Program Files which is by default located on C:\Program Files and then find Microsoft Security Client. At this point, you should find Setup.exe, and then right-click on it and then select Properties. After this, you should click on the Change settings for all users box. At the end, you should change the compatibility mode to Windows 7 and then tap on OK button.
know here this link: How to Scan A Word Document and Convert PDF to Word?
- Uninstall Program via Command line:
C:\Program Files\Microsoft Security Client\setup.exe” /x /disableoslimit
This method will launch MSE uninstaller and then you should click on Uninstall option.
The above method will help to uninstall Microsoft Security Essentials. If in case, the customer is still having any kind of problem then just contact to the customer care of Microsoft support team via office.com/setup get the download free key for office 2021. For more details, you can go to the official website of Microsoft Office.
read here also…
www.webroot.com/safe
www.avg.com/retail
#uninstall microsoft security essentials #microsoft security essential #www.office.com/setup #office.com/setup #microsoft office #office.com/myaccount