text2vec | text vector representation tool that converts text | Natural Language Processing library
kandi X-RAY | text2vec Summary
kandi X-RAY | text2vec Summary
text2vec, text to vector. A text vector representation tool that converts text into a vector matrix, and implements text representation and text similarity calculation models such as Word2Vec, RankBM25, Sentence-BERT, and CoSENT, out of the box.
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Top functions reviewed by kandi - BETA
- Train the model
- Compute spearman correlation
- Compute Pearson correlation coefficient
- Evaluate the model
- Retrieve a file from disk
- Validate a file against a given hash
- Extract an archive
- Compute the md5 hash of a file
- Compute the cosine distance between two sentences
- Computes the squared similarity between two tensors
- Compute the edit distance between two strings
- Calculate Spearman similarity score
- Load an NLI train dataset
- Compute the z - score of a given array
- Return the nterms of words
- Find the number of common substring between two Strings
- Embed sentence
- Convert train_sentsamples to CoSENT model
- Loads an Ensembl Dataset
- Compute embedding for a given model
- Performs a semantic search
- Encodes the BERT
- Compute the cosine similarity between two vectors
- Calculate simhash
- Encodes sentences
- Compute the similarity between two sentences
- Return ngrams from words
text2vec Key Features
text2vec Examples and Code Snippets
net.eval() #测试模式
with torch.no_grad():
for inputs, labels in test_data_loader:
inputs, labels = inputs.to(device), labels.to(device)
outputs = net(inputs)
acc = calculat_acc(outputs, labels)
print('测试集正
keys = sorted(d.keys())
def text2vec(text):
words = text.lower().split()
return [
int(any(
(d[key] in word) for word in words
)) for key in keys
]
test_text = "did ijust atea
> example <- "This is an example. This is an example"
> unlist(strsplit(example, split = " "))
[1] "This" "is" "an" "example." "This" "is" "an" "example"
> unlist(strspl
Community Discussions
Trending Discussions on text2vec
QUESTION
I set my model and data to the same device,
...ANSWER
Answered 2021-Feb-03 at 05:42In evaluation part: Do this
QUESTION
Here's the situation, one whose solution seemed to be simple at first, but that has turned out to be more complicated than I expected.
I have an R data frame with three columns: an ID, a column with texts (reviews), and one with numeric values which I want to predict based on the text.
I have already done some preprocessing on the text column, so it is free of punctuation, in lower case, and ready to be tokenized and turned into a matrix so I can train a model on it. The problem is I can't figure out how to remove the stop words from that text.
Here's what I am trying to do with the text2vec package. I was planning on doing the stop-word removal before this chunk at first. But anywhere will do.
...ANSWER
Answered 2020-Dec-22 at 00:59It turns out that I ended up solving my own problem.
I created the following function:
QUESTION
I am using {text2vec} word embeddings to build a dictionary of similar terms pertaining to a certain semantic category.
Is it OK to compound some tokens in the corpus, but not all? For example, I want to calculate terms similar to “future generation” or “rising generation”, but these collocations occur as separate terms in the original corpus of course. I am wondering if it is bad practice to gsub "rising generation" --> "rising_generation", without compounding all other terms that occur frequently together such as “climate change.”
Thanks!
...ANSWER
Answered 2020-Oct-05 at 04:08Yes, it's fine. It may or may not work exactly the way you want but it's worth trying.
You might want to look at the code for collocations in text2vec, which can automatically detect and join phrases for you. You can certainly join phrases on top of that if you want. In Gensim in Python I would use the Phrases code for the same thing.
Given that training word vectors usually doesn't take too long, it's best to try different techniques and see which one works better for your goal.
QUESTION
I am trying to run through text2vec
's example on this page. However, whenever I try to see what the vocab_vectorizer
function returned, it's just an output of the function itself. In all my years of R coding, I've never seen this before, but it also feels funky enough to extend beyond just this function. Any pointers?
ANSWER
Answered 2020-May-22 at 15:30The output of vocab_vectorizer is supposed to be a function. I ran the function from the example in the documentation as below:
QUESTION
I am trying to implement one of the solutions to the question about How to align two GloVe models in text2vec?. I don't understand what are the proper values for input at GlobalVectors$new(..., init = list(w_i, w_j)
. How do I ensure the values for w_i
and w_j
are correct?
Here's a minimal reproducible example. First, prepare some corpora to compare, taken from the quanteda tutorial. I am using dfm_match(all_words)
to try and ensure all words are present in each set, but this doesn't seem to have the desired effect.
ANSWER
Answered 2020-Apr-15 at 08:15Here is a working example. See ?rsparse::GloVe
documentation for details.
QUESTION
Here's what I am doing:
- Loading sparse matrix from a file.
- Extracting indices(col, row) which have the values in this sparse matrix.
- Use these indices and the values for further computation.
This works fine when I am executing the steps on R command prompt. But when its done inside a function of a package, step 2 throws the following error:
...ANSWER
Answered 2020-Mar-02 at 11:32You need to load the library Matrix, chances are the package does not load it. See example below:
QUESTION
I'm building docker containers with R, with lines like:
...ANSWER
Answered 2020-Feb-26 at 04:29Have you seen install2.r and its --error
option?
We use it (and wrote it/added that options) for some of the Dockerfiles in the Rocker Project dedicated to Docker support for R.
QUESTION
So here is my code
...ANSWER
Answered 2019-Dec-25 at 00:38It's still a little hard to answer your question: we can't run your code because we don't have "nyt.csv." But it seems that gsub()
will do what you want:
QUESTION
The code below is the one I am using for plotting an LDA plot using text2vec inside topic_model function in a shiny app. input$date is a checkboxGroupInput selection, input$data works perfectly fine for a DT::renderDataTable output & topic_model runs well outside the app. Here I found how to get an LDA plot in a shiny app, but I didn't really get it so copied as it was. input$go is a simple actionButton.
...ANSWER
Answered 2019-Dec-18 at 19:58Use: req(input$data)
instead of if(!exists(input$data)) return()
. When input$data
hasn't been filled out it == ""
. exists("")
will throw that error.
Also eventReactive
looks wrong. It's not doing anything. Did you mean:
QUESTION
Is there any alternative for rtexttools or another package for this kind of classification methodology, because these package were erased, also maxent and glmnet and they depended on rtexttools and vice verse; here is the script that im trying to apply and classify
...ANSWER
Answered 2019-Dec-06 at 14:56First, the package(s) are not on CRAN
anymore but you can still use them if you want. The easiest way is to install them from the archive:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install text2vec
You can use text2vec 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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