Questions tagged [named-entity-recognition]

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BIO/IOB tagging scheme: O-word between a entity

I'm usin IOB2 tagging scheme, but during the annotation process I stumbled in to a problem: normally I would tag "New York" New - B-GPE, York I-GPE, but if there would be another word ...
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1 answer
22 views

Finding associated words to a named entity

Is there a way to find a list of associated words to a Named Entity? For instance : let the Named Entity be FIFA. Now FIFA is a Football Organization and hence related to the term football and all the ...
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How to improve the speed and accuracy of spacy-based named entity recognition (NER)?

I have a file with a couple of million sentences, all in lower-case (I cannot access the cased version). The problem is that the dataset contains a lot of human names and I would like to replace those ...
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Predicting same tokens as base BERT model for token classification on custom dataset

I have a custom dataset with custom tag for each token in the text. I want to train a BERT model for classifying each token into its corresponding category. To do ...
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2 answers
48 views

NLP vs Keyword-Search. which one is the best?

I have constructed a natural language processing (NLP) model with the aim of identifying technology keywords within text. The model is trained on a large dataset that contains over 400,000 phrases and ...
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35 views

Make spacy NER model more robust to handle odd product code entity extraction

I am developing a NER model to extract product codes that are all over the place in terms of format and naming convention (AXEWAL719XA, AX-P20XXT-001, etc.). I started with the basic blank spacy('en') ...
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NER - What advantage does IO Format have over BIO Format

In this paper, the authors say that they used IO schema instead of BIO in their dataset, which, if I am not wrong, means they just tag the corresponding Entity Type or "O" in case the word ...
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31 views

identify data type of column from table using NER models

I have structure data with csv or parquet format, I would like to extract the data type of the column by analyzing the data. when I looked at the NER from Hugging phase transformers, it actually ...
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Named Entity Recognition to create an ANKI deck

I am trying to create a deck of biographies for ANKI (a programm used for space-repetition). The source material is the book called "The dictionary of world biography". I preprocessed the ...
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16 views

ML architecture for returing multi-ouput text (NLP)

I'm trying to design a model that would resemble Named Entity Recognition but shows only one best fit. The simplified business side looks like this: I have multiple pdf documents (text + regions) I ...
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83 views

Named Entity Recognition using Spacy V3 with imbalance entities

Will the spacy V3 model get affected by imbalanced entities? I have got a dataset annotated in spacy format and if I look into my custom entities the rations are different for different entities. For ...
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How to link/relate predicted entities in named entity recognition?

I have developed a NER model to detect all address and property price independently in a pdf document which have property address and its prices in natural language. There are lots of variations in ...
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What are the best Named entity Recognition (NER) models by language

I am trying to find the best named entity recognition models for other languages (specifically German, Spanish and Dutch). Does anyone know where I can find a list of the best ones along with their ...
2 votes
1 answer
45 views

Is it recommended to train a NER model using a dataset that has all tokens annotated?

I'd like to train a model to predict the constant and variable parts in log messages. For example, considering the log message: Example log 1, the trained model ...
2 votes
3 answers
150 views

Entity Embeddings of email address

I have a set of email address e.g. guptamols@gmail.com, neharaghav@yahoo.com, rkart@gmail.com, squareyards321@ymail.com..... Is it possible to apply ML/Mathematics to generate category (like NER) from ...
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How to train a machine learning model for named entity recognition

I cannot find any sources about the architectures of machine learning models to solve for NER problems. I vaguely knows it is a multiclass classification problem, but how can we format our input to ...
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Tagging short strings based on position, case, word frequency and so on

Most of the NLP stuff I've been looking at does NER given a long blob of text (e.g., a news article). I am curious what the best method is when you have millions of short strings, say for example ...
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Best Approach for this Entity Extraction Problem?

Context I have looked endlessly for a similar question to this but I haven't found one so hopefully someone can offer me some insight. I have a task where I'm given a bunch of employees with their ...
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52 views

How do I upload SpaCy models to GitHub?

I am about to put my project on GitHub but the SpaCy models are too big (6GB). What is best practice for handling SpaCy models when pushing to your git? I am very new to this and this is my first ...
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How FLAIR NER algorithm detects entities with typo?

I'm checking the NER FLAIR algorithm with typos: 'Jackson has a number of apartments in Les Angeles San Diego and Oakland' I wrote Les Angele instead of ...
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Why FLAIR does't recognize the entire location name

I'm tying to to detect simple location with NER algorithm, and I'm getting semi-corrected results: ...
2 votes
1 answer
1k views

Custom Named-Entity Recognition (NER) in product titles using deep learning

I am new to machine learning and Natural Language Processing (NLP). I am trying to identify which brand, product name, dimension, color, ... a product has from its product title. That is, from 'Sony ...
1 vote
1 answer
138 views

How can I use Wikipedia2vec model for embedding my article named entities as 40% entities are not in a wikipedia?

I have news articles in my dataset containing named entities. I want to use the Wikipedia2vec model to encode the article's named entities. But some of the entities (around 40%) from our dataset ...
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153 views

How Can I Process SageMaker Ground Truth NER JSON Output into DataFrame?

So, I've recently created a job using AWS SageMaker Ground Truth for NER purposes, and have received an output in the form a manifest file. I'm now trying to process the manifest file into a dataframe,...
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1 answer
531 views

How to perform entity level train-val-test split for NER task?

A normal and stratified split option is provided by sklearn method that can be used for ML problems like multi-class classification. This is relatively easier to do as (1) one sample has one class, ...
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reducing false positives with annotated named entity recognition model

I am training a NER model to detect mentioned phrases and slang words in a bias study conducted on court cases. Essentially, I have packets of text that I scanned and these are the complete ...
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NER prections with distilbert transformer model

I am trying to extract 'agreement date' label from a corpus of legal contracts. In the train dataset, I used pytorch-transformer model to train. ...
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1 answer
843 views

How to use is_split_into_words with Huggingface NER pipeline

I am using Huggingface transformers for NER, following this excellent guide: https://huggingface.co/blog/how-to-train. My incoming text has already been split into words. When tokenizing during ...
2 votes
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49 views

How to use NER and POS for model input?

I am building a model for contract information extraction, where NER and POS could serve relevant information. I am trying with Keras (and XGBoost). My question would be what are the techniques to use ...
1 vote
1 answer
237 views

Annotating NER dataset

I am working on annotating a dataset for the purpose of named entity recognition. In principle, I have seen that for multi-phrase (not single word) elements, annotations work like this (see this ...
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2 answers
431 views

Handling unknown words when making NER Models

I'm working on my custom Named Entity Recognition model that I'm making in Python's Keras lib. I have read that I should enumerate all words that are appearing, so that I get vectorized sequences. I ...
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Phone number tagging with spaCy

I have to do a BIO tagging for a given set of sentences. For example: ...
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13 views

Dictionary of life sciences or medical terminologies

I'm exploring available open-source dictionaries with medical terminologies. I found this but it's limited. Currently focusing on how to make use of NIH. However, the challenge is that I'm running ...
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2 answers
661 views

Inter-Annotator Agreement score for NLP?

I have several annotators who annotated strings of text for me, in order to train an NER model. The annotation is done in json format, and it consists of a string followed by the start and end index ...
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1 answer
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Comparing Multiclass classifiers with "No Answer"-Class

I have three classifiers to classify some words into four classes. Every word that does not fit into any of these four classes gets classified as "No Answer". I would like to compare the ...
2 votes
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58 views

Extracting location from text - NOT sensetive to letters (Upper or Lower Case) or already known vocabulary words

I would like to extract location or contents related to location from raw text. I used the NLTK and spaCy packages already; none worked for me. For example, both would neglect 'canada' as a location ...
2 votes
1 answer
28 views

Heauristics for a NER model prediction

I am trying to build and NER model that can name entities in a "Job description." The entities are: Mandatory skills (Must have skills like java, python, c++ etc.) Nicetohave skills (the ...
1 vote
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166 views

Most useful clustering algorithm for NER / document matrix

I have a matrix composed of documents in columns and named entities recognized in all the documents as rows. K-means clustering has not offer me a meaningful set of clusters, and indeed one of the ...
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1 answer
28 views

Extracting Keywoards from messages with own NER Model

I'm starting a project where I want to extract keywoards from given messages. The keywoards are for example something like: "hard disk", "watch" or other technical components. I'm ...
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1 answer
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what is best classification that can be used with NER?

I want to do comparison of classification techniques but now i only have SVM as one of the techniques. Can anyone suggest another technique other than CRF and MNB? Thank you
2 votes
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Generation of medical institution names: training corpora?

My question is quite similar to this one: Generation of institution names. I need to be able to produce 'fake' names of medical institutions, specifically to create data for unit tests. Unfortunately, ...
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2 answers
1k views

Named Entity Recognition with BIO Tagging

I'm trying to implement NER using BIO annotation. For example "I went to the United States" [O, O, O, B, I, I] where B and I denote the beginning and '...
3 votes
1 answer
1k views

Testing Spacy NER model

I've trained an NER model with the use of Spacy, and I would like to test the accuracy on a test dataset. What would be the best way to perform this?
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1 answer
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How Sklearn-crfsuit interpret text features

As we see here, to build an NER model we can pass text features (parts of the word, pos tag, structure of the word etc.) to Sklearn-CRF. I was wondering how does this package convert the text features ...
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1 answer
66 views

Custom POS tagger for health issues [closed]

I am new to NLP, I have a bunch of raw data that is not tagged at all of medical questions, I need to extract from them what are the health issues stated in those texts. I was thinking I need to ...
1 vote
1 answer
1k views

Calculating confidence score in NER

I am working on a problem on Named Entity Recognition. Given a text, my model is detecting the Named Entities and extracting that info for the end-user. Now the ask is end-user needs a confidence ...
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Imbalance classes in Named Entity Recognition

I am currently working on a NER problem which attempts to extract 2 entities - place-of-interest(POI) and street from an address string in the Indonesian language. I used IndoBert (available here) and ...
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complete entity extraction from unstructured data

I understand there are many techniques/libraries/packages to extract named entities like people, places etc. from data. Personally, for me an entity is something like: ...
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1 answer
2k views

How to do NER predictions with Huggingface BERT transformer

I am trying to do a prediction on a test data set without any labels for an NER problem. Here is some background. I am doing named entity recognition using tensorflow and Keras. I am using huggingface ...
2 votes
1 answer
195 views

Is CRF suitable for multi-words Named Entity Recognition?

I've a problem where I should create a custom NER by using sklearn CRF. In the official tutorial, they are using CoNLL2002 corpus is available in NLTK where the entities are represented with a single ...