pipeline

问题 I am trying to design an input pipeline with Dataset API. I am working with parquet files. What is a good way to add them to my pipeline? 回答1: We have released Petastorm, an open source library that allows you to use Apache Parquet files directly via Tensorflow Dataset API. Here is a small example: with Reader('hdfs://.../some/hdfs/path') as reader: dataset = make_petastorm_dataset(reader) iterator = dataset.make_one_shot_iterator() tensor = iterator.get_next() with tf.Session() as sess:

问题 I am solving a binary classification problem over some text documents using Python and implementing the scikit-learn library, and I wish to try different models to compare and contrast results - mainly using a Naive Bayes Classifier, SVM with K-Fold CV, and CV=5 . I am finding a difficulty in combining all of the methods into one pipeline, given that the latter two models use gridSearchCV() . I cannot have multiple Pipelines running during a single implementation due to concurrency issues,

问题 I am using a pipeline very similar to the one given in this example : >>> text_clf = Pipeline([('vect', CountVectorizer()), ... ('tfidf', TfidfTransformer()), ... ('clf', MultinomialNB()), ... ]) over which I use GridSearchCV to find the best estimators over a parameter grid. However, I would like to get the column names of my training set with the get_feature_names() method from CountVectorizer() . Is this possible without implementing CountVectorizer() outside the pipeline? 回答1: Using the

问题 With integrated pipeline, all requests are passed through ASP.NET, including images, CSS. Whereas, in classic pipeline, only requests for ASPX pages are by default passed through ASP.NET. Could integrated pipeline negatively affect thread usage? Suppose I request 500 MB binary file from an IIS server: With integrated pipeline, an ASP.NET worker thread would be used for the binary download (right?). With classic pipeline, the request is served directly by IIS, so no ASP.NET thread is used. To

问题 I've written a small program (with code from SO) that facilitates printenv | sort | less . Now I want to implement error-handling and I start with execvp. Is it just to check the return value and what more? AFAIK I just check the return value if it was 0 in this function return execvp (cmd [i].argv [0], (char * const *)cmd [i].argv); . Is that correct? #include <sys/types.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> struct command {

问题 I am trying to do this with an httpRequestBegin pipeline processor, but I don't seem to be able to access the user's IP address from the given HttpRequestArgs parameter. When I implement a class that has this method public void Process(HttpRequestArgs args) { string ipAddress = args.Context.Request.UserHostAddress; // Not working string state = GetState(ipAddress); // already implemented elsewhere RedirectUserByState(state); // already implemented elsewhere } I thought that this might hold

问题 I have started to use scikit learn for text extraction. When I use standard function CountVectorizer and TfidfTransformer in a pipeline and when I try to combine with new features ( a concatention of matrix) I have got a row dimension problem. This is my pipeline: pipeline = Pipeline([('feats', FeatureUnion([ ('ngram_tfidf', Pipeline([('vect', CountVectorizer()),'tfidf', TfidfTransformer())])), ('addned', AddNed()),])), ('clf', SGDClassifier()),]) This is my class AddNEd which add 30 news

问题 I'm trying to run experiments on a text file to get word frequencies. I tried using the following command: gawk -F"[ ,'\".]" -v RS="" '{for(i=1;i<=NF;i++) words[$i]++;}END{for (i in words) print words[i]" "i}' myfile.txt | uniq -c | sort -nr | head -10 But I get the following error: gawk: cmd. line:1: fatal: cannot open file '|' for reading (No such file or directory) I read somewhere that ';' may be used instead of '|' on Windows machines, although this results in a similar error. It seems

问题 I need to create a program that processes a huge amount of images. There are about 10 different stages in the process which need to happen sequentially. I wanted to ask if it is better to create a pipeline where each processing stage has its own thread and buffers in between using the pipeline pattern described here: https://msdn.microsoft.com/en-us/library/ff963548.aspx or create a thread pool and assign one image to one thread by just using Parallel.Foreach. And why? 回答1: Maybe this will be

问题 Building on this technique to use Cmdlets as "delegates" I am left with this question: Is there a way to pass a commandlet with prescribed named or positional parameters to another commandlet that uses the powershell pipeline to bind the remaining parameters to the passed commandlet? Here is the code snippet I'd like to be able to run: Function Get-Pow{ [CmdletBinding()] Param([Parameter(ValueFromPipeline=$true)]$base,$exp) PROCESS{[math]::Pow($base,$exp)} } Function Get-Result{