Run on Titan x:70/+ 0.1 Ms/batch Forward-bacKward Pass:run on Tesla k40c:480/+ ms/batch Run on Titan x:244/+ Ms/batch "" "from __future__ import a Bsolute_import from __future__ Import Division to __future__ import print_function from datetime import datetime import Math Import time from six.moves import xrange # pylint:disable=redefined-builtin import tensorflow as tf FLAGS = tf. App.flags.FLAGS Tf.app.f
high-dimensional space, and the more commonly used mapping function is TF*IDF, which takes into account the occurrence of words in the document and document collections. A basic TF*IDF formula is as follows:
Ω=tfi (d) *log (N/DFI) (2-1)
(2-2)
where n is the number of documents in the document collection, TFI (d) is called the word frequency, the number of occurrences of the
http://cv-tricks.com/tensorflow-tutorial/save-restore-tensorflow-models-quick-complete-tutorial/What is a TF model:
After training a neural network model, you will save the model for future use or deployment to the product. So, what is the TF model. The TF model basically contains network design or graph, and train the network parameters and variables. Therefore,
datasetsimport tensorflow as tffrom tensorflow. python. framework import opsops. reset_default_graph () # import the iris dataset # convert the target data to 1 or 0 based on whether the target data is an iris. # Because the iris dataset marks the iris as 0, we set it from 0 to 1 and Mark other species as 0. # This training only uses two features: the petal length and the petal width. These two features are in the third and fourth columns of x-value # iris.tar get = {0, 1, 2 }, where '0' is set
Learning notes TF041: distributed parallel, learning notes tf041 parallel
TensorFlow is distributed and parallel based on the gRPC communication framework. One master is responsible for creating sessions, and multiple workers are responsible for executing computing graph tasks.
Create a TensorFlow Cluster Object, including a group of tasks (one independent machine for each task), and execute the TensorFlow computing graph in a distributed manner. A Cluster divides multiple jobs. A job is a type
sequencingThe first part: VSMThe VSM is referred to as vector space model, which is mainly used to calculate the similarity of documents. When calculating document similarity, important features need to be extracted. Feature extraction generally uses the most general general method: TF-IDF algorithm. This method is very simple but very practical. Give you an article, with the Chinese word breaker tool (currently the best is the OPENNLP community in t
file:Writer.write (example. Serializetostring ())Do not forget to close the file writer after all the files have been written.Second, after creating our own Tfrecords file, we can use it in training. TensorFlow provides us with a dataset for this API to make it easy to use the Tfrecords file.First, we define a function that parses tfrecords, which is used to parse a binary file into tensor. The sample code is as follows:defPARES_TF (Example_proto):#define a dictionary of parsingDics = {
ROS Learning Series and ros Learning Series
We have already discussed how to use URDF to build a robot car and display it in the simulation environment of Rviz, but the car is still. The following describes how to make it work in Rviz and clarify the relationship between URDF, TF and odom.1. Relationship between base_link, odom, fixed_frame, target_frame, and map in ROS
Base_link is usually defined in the urdf file, which represents the backbone of th
"Input/xxx" in the format.Define the Variable_summaries function to perform simple statistical analysis of the data, such as mean, variance, and extreme values. It is worth noting that the input parameter var in this function should be used with TF. Variable defines the weights, deviations.
def variable_summaries (Name,var): With
tf.name_scope (name+ ' _summaries '):
mean = Tf.reduce_mean (Var)
Tf.summary.scalar (name+
We often need to save the PB file of the TensorFlow model, which is very handy when using the Tf.graph_util.convert_variables_to_constants function. 1. Training Network: fully_conected.py
Import argparse import OS import time import TensorFlow as TF import datasets_mnist # Basic model parameters as external
Flags.
FLAGS = None num_classes = # The mnist images are always 28x28. image_size = Image_pixels = image_size * image_size def placeholder_input
each dataset. This helps us find the data set parameters that affect the best choice.The following model selection algorithm and flowchart are a summary of our extensive experiments.Data preparation and model building algorithms
1. Calculate the number of samples/the number of words in each sample this ratio.
2. If this ratio is less than 1500, mark the text as N-grams and categorize it with a simple MLP model (the left branch of the flo
self.params = [self. W, self.b]
The following is a class of multilayer perceptron, as follows:
Class MLP (object): "" "Multi-layer Perceptron Class A multilayer Perceptron is a feedforward artificial neural netw
Ork model that have one layer or more of hidden units and nonlinear activations. Intermediate layers usually has as activation function tanh or the sigmoid function (defined here by a ' hiddenlayer '
Class) While the top layer was
, kw kernel width, convolution kernel width, n_out Number of convolution kernels, number of output channels, dh step height, dw step width, the p parameter list. Get_shape () [-1]. value gets the number of input_op channels. Tf. name_scope (name) sets scope. Tf. get_variable creates kernel (convolution kernel), shape [kh, kw, n_in, n_out], convolution kernel height and width, and input and output channels.
Basic TensorFlow usage example
This article is based on Python3 TensorFlow 1.4. This section describes the basic usage of TensorFlow by using the simplest example, plane fitting.
The introduction method of constructing TensorFlow is as follows:
Import tensorflow as tf
Next, we construct some random Three-dimensional data, and then use TensorFlow to find the plane to fit it. First, we use Numpy to generate a random three-dimensional point. The variable
A detailed description of the TF data read queue mechanism
TFR file multi-threaded queue read and write operations:
Tfrecod File Write operation:
Import TensorFlow as Tfdef _int64_feature (value): # value must be an iterator object # non-int data use bytes instead of Int64 to return Tf.train.Feature (Int64_list=tf.train.int64list (Value=[value])) Num_shards = 2instance_perpshard = 2for i in rang
Collections: A list of chart collection keys, with new variables added to these collections. Default = [Graphkeys.variables]
Validate_shape: If False allows the variable to be initialized with the value of an unknown shape, if true, the default shape initial_value must be supplied.
Name: Optional name of the variable, default ' Variable ' and get automatically
Creation of variablesWhen you create a variable, you pass in a tensor as the initial value into the constructor variabl
Pass the Value Block in the iOS attribute to pass the value between two viewcontrollers
The attribute value is to pass the data on page A to page B. The following is to pass the TextField content of FirstViewController to the navigation bar title and console output on the SecondViewController page.
# Import
@ Interface FirstViewController: UIViewController
{
UITextField * tf;
}
@ End
# Import "FirstViewController. h"
# Import "SecondViewControll
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