Human-Activity-Recognition | Simple 1D CNN approach to | Machine Learning library
kandi X-RAY | Human-Activity-Recognition Summary
kandi X-RAY | Human-Activity-Recognition Summary
In this project, we take advantage of the modeling capabilities of deep neural networks to extract deep features from accelerometer data using a convolutional neural network (CNN). The network consists of 3 convolutional layers, and 2 fully connected layers, a relatively shallow architecture by today's standards. Our goal is not to achieve state-of-the-art accuracy, but to demonstrate the benefits of using neural networks to model the task of HAR, with little to no domain knowledge. We will provide a short introduction to the HAR task, followed by an analysis of our accelerometer data. We will then explain the network architecture and our approach to this task, and conclude with a brief summary of recent breakthroughs, applications, and future investigations.
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Top functions reviewed by kandi - BETA
- Train a model
- Evaluate the model
- Save state to file
- Build the data loader
- Create training and validation samples for training and validation
- Normalize the data
- Build the dataset
Human-Activity-Recognition Key Features
Human-Activity-Recognition Examples and Code Snippets
Community Discussions
Trending Discussions on Human-Activity-Recognition
QUESTION
I am trying to create a model from this https://machinelearningmastery.com/cnn-models-for-human-activity-recognition-time-series-classification/ example that takes as inputs 3 (to unbug, there will be 1000s) inputs which are arrays of dimension (17,40):
...ANSWER
Answered 2021-May-02 at 22:06The Softmax layer size should be equal to the number of classes. Your Softmax layer has only 1 output. For this classification problem, first of all, you should turn your targets to a one-hot encoded format, then edit the size of the Softmax layer to the number of classes.
QUESTION
Following this tutorial from https://machinelearningmastery.com/how-to-develop-rnn-models-for-human-activity-recognition-time-series-classification/
I’m trying to implement CNN-LSTM Network Model on my time series data.
...ANSWER
Answered 2020-Dec-10 at 14:17You are trying to reshape X_train to (51135, 4,32,32). It is impossible because X_train shape is (51135, 128, 12). 51135 x 128 x 12 != 51135 x 4 x 32 x 32
QUESTION
I'm creating a 1D CNN using tensorflow.keras
, following this tutorial, with some of the concepts from this tutorial. So far modeling and training seem to be working, but I can't seem to generate a prediction. Here's an example of what I'm dealing with:
ANSWER
Answered 2020-Nov-23 at 09:09please runing the code: model.predict([trainX[0]])
, and the model outputs the predicted results
QUESTION
I'm struggling to figure out how to properly save a tensorflow model that was saved as a saved_model method and convert it to tensorflow.js. when I currently convert it it ends up with a weights_manifest.json
containing only one set of weights.
The model I want to convert is from this jupyter notebook .RNN for Human Activity Recognition - 2D Pose Input.
The full code for building and training the graph can be found in that jupyter notebook.
I can successfully run the code:
...ANSWER
Answered 2019-Feb-24 at 15:37The output_node_names
is the name of the node you want to return. You can give a name to your tensorflow operation and that name will serve as output_name
.
QUESTION
I am trying to do a model to recognize one human movement. My activity is to recognize a person catching. I already have a record with about 260 right movements and I annoted that file with labels "catch" and "nothing" to train my model. I have another file, this file is annoted too, just to test the accuracy of the model.
I am using a CNN model based on this site. And I modified the window size to 400 (equivalent of 4s of record) So after trainning my model I have this results (my model is saved and is already trained from a previous record, that's why it gives good results in the first epochs):
...ANSWER
Answered 2018-Jul-05 at 16:28Clarifying range of prediction values
as I see it, your values are 0.007 and 0.993 or something in that Magnitude - so what exactly do you mean by higher, since the sum is always 1. So if one gets higher the other should get smaller - if I understood your Problem correctly.
Clarifying prediction correspondance
Since you labeled your data with the classes "catch" and "nothing" that's what your predictions correspond to. So an Output of (0, 1) would mean that your Network predicts the Input to be of the second class.
Clarifying window size
To solve this I first Need you to explain, what you mean by window size. The amount of recorded seconds that you use as an input? If so, I would say, that if you can recognize a "catch" within this time Frame - then your Network should also be able to do so. Other than that, this would be an appropriate case for a line search.
QUESTION
I have downloaded an android app from Github (Link). But I am unable to install this app on android (I am using Linux). Could someone tell me which direction should I go? App folder Contains following files:
build.gradle
gradle.properties
- gradlew
- gradlew.bat
- settings.gradle
ANSWER
Answered 2018-May-30 at 18:23first install gradle this linke then you can build the project on Command Line './gradlew assembleDebug' This creates an APK named module_name-debug.apk in project_name/module_name/build/outputs/apk/. The file is already signed with the debug key and aligned with zipalign, so you can immediately install it on a device.
QUESTION
I am an R learner. I am working on 'Human Activity Recognition' dataset from internet. It has 563 variables, the last variable being the class variable 'Activity' which has to be predicted.
I am trying to use KNN algorithm here from CARET package of R.
I have created another dataset with 561 numeric variables excluding the last 2 - subject and activity.
I ran the PCA on that and decided that I will use the top 20 PCs.
...ANSWER
Answered 2017-Nov-20 at 08:24How have you tried to cbind the column, could you please show the code? I think you simply stepped into the difficulties produced by StringsAsFactors = TRUE
. Does the following line solve your problem:
QUESTION
I am trying to write some code in python for data segmentation, here is my code it consists of two functions. I used python 3.5
...ANSWER
Answered 2018-Feb-26 at 20:10(size / 2)
in:
QUESTION
I'm running the code from github, and encountered the error in the following lines:
...ANSWER
Answered 2017-Oct-29 at 04:54Actually, this is because that you are using an older version of tf.split. Modify your code as follows and should be working.
QUESTION
(I am testing my abilities to write short but effective questions so let me know how I do here)
I am trying to train/test a TensorFlow recurrent neural network, specifically an LSTM, with some trials of time-series data in the following ndarray format:
...ANSWER
Answered 2017-Jul-29 at 01:58I think for most LSTM's you're going to want to think of your data in this way (as it will be easy to use as input for the networks).
You'll have 3 dimension measurements:
feature_size = the number of different features (torque, velocity, etc.)
number_of_time_steps = the number of time steps collected for a single car
number_of_cars = the number of cars
It will most likely be easiest to read your data in as a set of matrices, where each matrix corresponds to one full sample (all the time steps for a single car).
You can arrange these matrices so that each row is an observation and each column is a different parameter (or the opposite, you may have to transpose the matrices, look at how your network input is formatted).
So each matrix is of size: number_of_time_steps x feature_size (#rows x #columns). You will have number_of_cars different matrices. Each matrix is a sample.
To convert your array to this format, you can use this block of code (note, you can already access a single sample in your array with A[n], but this makes it so the shape of the accessed elements are what you expect):
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Install Human-Activity-Recognition
You can use Human-Activity-Recognition 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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