How to detect entities in HTML using NLP

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Artificial intelligence enhances web data gathering and simplifies discovering, obtaining and processing of HTML elements. However, raw information found in text form is still hard to structure due to the variety of languages, vocabulary, and meanings of particular words. The solution lies in implementing Natural Language Processing models for advanced semantics’ analysis. The initial phase of online insights’ collection stays the same anyway, and implies requirements to buy residential and mobile proxies. These are the IPs the Dexodata infrastructure offers for ethical internet info extraction.

What is Natural Language Processing?

Natural Language Processing (NLP) constitutes a self-learning discipline within data science and artificial intelligence. Its algorithms play an intermediary role between computers and human languages because of comprehending and engaging written text. Natural Language Processing is applied in:

  • Word management, enhancing the text editors’ efficiency.
  • Translation software, facilitating cross-language communication.
  • Search engines, enabling users to retrieve relevant information from vast digital repositories.
  • Banking apps, utilizing natural language interactions to check balances or conduct transactions.
  • Chatbots, providing human-like interactions in customer service and support.

After a research team buys residential IP for seamless access to internet sources, the NLP technologies come into play to improve advanced data analytics with AI. Its objectives consist in:

  1. Finding suitable HTML elements
  2. Tagging them as tokens and parts-of-speech
  3. Establishing the dependencies through NER
  4. Identifying named entities.

These procedures empower unstructured pieces of information with particular meanings significant for future AI-based business forecasting or current processes’ optimization.

How do I extract entities from text or HTML with NLP

NER stands for Named Entity Recognition and represents a dedicated subphase of NLP. It is capable of ferreting out and categorizing named entities within text. Named entities, in turn, are specific fragments of information taking various forms, such as:

  • Personal names
  • Geographical locations
  • Organizations
  • Brands
  • Dates and times
  • Products.

Each NER model is trainable according to specifics of the task and initial HTML characteristics. The decision to buy mobile and residential proxies or datacenter IPs is made in a similar way.


Using NLP for entity detection: Main steps


Selection of NLP models starts from choosing a computing language. Python advantages for online info acquisition include high compilation speed, understandable code, and a wide range of libraries. Popular Python Natural Language Processing frameworks are:

  • spaCy
  • Gensim
  • Natural Language Toolkit (NLTK)
  • TextBlob
  • Polyglot
  • scikit-learn.

They differ in details and provide differing experience with a focus on multilingual entities (Polyglot), topic modeling (Gensim), versatility (spaCy, NLTK). They, therefore, follow common steps. The stages of entities’ detection in HTML are:

1. Extracting text

Leveraging residential IPs you buy from an AML/KYC-compliant ecosystem collect text data from HTML-based sources. Here is an example of BeautifulSoup implementation:

from bs4 import BeautifulSoup

# Parse HTML

html = "<html>...</html>"

# Place unstructured HTML content here

soup = BeautifulSoup(html, 'html.parser')

# Extract text

text = soup.get_text()

2. Cleaning the initial database

There are two ways of deleting unwanted HTML tags, peculiar symbols, and spaces. Running NER modules is the first option, while the second one is leveraging regular expressions’ re library to scrub away the inaccurate elements:

import re

# Remove HTML tags and extra whitespace

cleaned_text = re.sub(r'\s+', ' ', text).strip()

3. Tokenization and POS tagging

Tokenization is the first act of breaking the text into manageable units within a Named Entity Recognition procedure. Each token serves as a piece of the common picture. Then tokens are tagged as Parts-of-Speech (POS) assigning grammatical information. Here is an example of Python spaCy use:

import spacy

# Load the English language model, e.g.

nlp = spacy.load("en_core_web_sm")

# Define the previously cleaned text

text = "Sample for detecting entities by NLP modules."

# Manage the text using spaCy

doc = nlp(text)

# Run a tokenization

tokens = [token.text for token in doc]

# Perform Part-of-Speech (POS) tagging

pos_tags = [(token.text, token.pos_) for token in doc]

# Print the tokens



# Print the POS tags

print("\nPOS Tags:")

for token, pos_tag in pos_tags:

    print(f"{token}: {pos_tag}")

4. Entity recognition

The core work with named entities starts here. NER models scour the tokenized text, hunt for entities and categorize them into distinct types. These could be individuals, organizations, places, dates, and more. Each named entity is labeled and then becomes a material for a more sophisticated procedure, rule-based pattern matching. Instead of regular expressions, the NLP model combines tokens into sequences according to previously set rules, and reveal dependencies:

# Process named entity recognition (NER)

for ent in tokens.ents:

    print(ent.text, ent.label_)

5. Post-processing

Depending on tasks, the need for refining the entities may appear. AI discards irrelevant tokens and undergoes others through normalization to ensure coherence within the obtained insights. Buy residential IP addresses for an optional AI-enhanced data enrichment.

6. Harvesting insights

The last phase consists in deploying tokens regarded as named entities. They are archived in CSV databases for further analysis.


Named entities detection challenges


Several obstacles follow NER-based entity detection in HTML additionally to difficulties of known AI-based data gathering. These are shifting structures, elusive entities, contextual enigmas, and the call for custom models’ training. To minimize the amount of irrelevant content from the beginning of detecting entities in HTML by NLP, buy Dexodata residential proxies and mobile IPs. This infrastructure for ethical enterprise-level internet data collection acts in strict compliance with KYC and AML policies providing valid scraping results.


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