Document Summarization
Learn abstractive document summarization using ktrain. This tutorial shows how to extract Wikipedia content and generate summaries with TransformerSummarizer.
Document Summarization with ktrain
This tutorial demonstrates how to perform abstractive document summarization using the ktrain
library. We will extract content from a Wikipedia page and then generate a summary using ktrain
's TransformerSummarizer
.
Prerequisites
Python: Ensure you have Python installed.
ktrain library: A powerful Python library for accessible deep learning.
wikipedia package: For extracting content from Wikipedia.
Steps
Step 1: Install Required Libraries
First, install the necessary libraries using pip.
!pip install wikipedia ktrain
Step 2: Import Required Libraries
Import the wikipedia
package for content extraction and the text
module from ktrain
for summarization.
import wikipedia
from ktrain import text
Step 3: Extract Wikipedia Content
Specify the title of the Wikipedia page you want to summarize and extract its content.
## Specify the Wikipedia page title
wiki_page_title = 'Pablo Picasso'
## Extract the page content
try:
wiki_page = wikipedia.page(wiki_page_title)
document_content = wiki_page.content
print(f"Successfully extracted content from '{wiki_page_title}'.")
# Print the first 1,000 characters to preview the content
print("\n--- Document Preview (First 1000 characters) ---")
print(document_content[:1000])
print("-----------------------------------------------")
except wikipedia.exceptions.PageError:
print(f"Error: Wikipedia page '{wiki_page_title}' not found.")
document_content = None
except wikipedia.exceptions.DisambiguationError as e:
print(f"Error: Disambiguation page for '{wiki_page_title}'. Please be more specific. Options: {e.options}")
document_content = None
Explanation: The wikipedia.page()
function retrieves the content of a specified Wikipedia article. We include error handling for PageError
(if the page doesn't exist) and DisambiguationError
(if the title refers to multiple pages).
Step 4: Load the ktrain Summarization Model
Instantiate the TransformerSummarizer
from the ktrain
library. This model is pre-trained and ready for summarization tasks.
## Instantiate the TransformerSummarizer
ts = text.TransformerSummarizer()
print("ktrain TransformerSummarizer loaded successfully.")
Explanation: ktrain
's TransformerSummarizer
leverages pre-trained transformer models (like BART or T5) specifically fine-tuned for summarization.
Step 5: Summarize the Wikipedia Document
Use the summarize()
method of the TransformerSummarizer
to generate a summary of the extracted document content.
if document_content:
# Generate the summary
# You can optionally specify max_length and min_length for the summary
summary = ts.summarize(document_content, max_length=150, min_length=50)
print("\n--- Generated Summary ---")
print(summary)
print("-------------------------")
else:
print("Cannot generate summary as document content was not loaded.")
Explanation: The summarize()
method takes the text content as input and returns a concise abstractive summary. You can control the length of the generated summary using max_length
and min_length
parameters.
Sample Output (for Pablo Picasso)
Pablo Diego José Francisco de Paula Juan Nepomuceno María de los Remedios Cipriano de la Santísima Trinidad Ruiz y Picasso (25 October 1881 – 8 April 1973) was a Spanish painter, sculptor, printmaker, ceramicist and theatre designer. He is known for co-founding the Cubist movement, the invention of constructed sculpture, the co-invention of collage, and for the wide variety of styles that he helped develop and explore. Among his most famous works are the proto-Cubist Les Demoiselles d'Avignon (1907), and the pottery Guernica (1937).
Picasso is regarded as one of the most influential artists of the 20th century. He spent most of his adult life in France. He was both the most slanderously attacked and the most unjustly praised of Paris and French literary and politic circles for the next century. After abandoning the Spanish territory, Picasso showed his most famous works in France. He was a Spanish sculptor, painter, printmaker, ceramicist and stage designer. He spent most of his adult life in France. He was of Spanish nationality. He was the most slanderously attacked and the most unjustly praised of Paris and French literary and politic circles for the next century. After abandoning the Spanish territory, Picasso showed his most famous works in France.
Picasso's paternal grandmother was from England. His father, José Ruiz y Blasco, was a painter, professor of drawing, and curator of a local museum in Málaga. His mother, Maria Picasso López, was from Spain. Picasso's father was of Andalusian descent, and his mother was from Galicia. The family made several moves in the years after his birth, first to A Coruña in 1891 and then to Barcelona in 1895, when Picasso was 13. Picasso demonstrated a strong aptitude for art from a very young age. His father, who recognized his talent, trained him as an artist.
The young Picasso showed his talent at an early age. His father, who was a painter and art professor, provided him with formal training. Picasso attended the Faculty of Fine Arts of Barcelona and later the Royal Academy of San Fernando in Madrid. He was not interested in attending classes and often skipped them. He spent his time sketching in the streets and visiting museums. In 1900, he visited Paris for the first time.
He exhibited his early works in Barcelona and Madrid. In 1901, he moved to Paris. From 1901 to 1904, he developed his Blue Period, which was characterized by somber paintings in shades of blue and green. The subjects of his paintings were typically beggars, prostitutes, and the poor. In 1904, he moved to Paris permanently. He began his Rose Period in 1904, which was characterized by brighter colors and more cheerful subjects.
In 1907, Picasso created Les Demoiselles d'Avignon, a radical departure from traditional representation. This work is considered a precursor to Cubism, a movement he co-founded with Georges Braque. Cubism revolutionized European painting and sculpture, breaking down objects into geometric forms and depicting them from multiple viewpoints.
Throughout his career, Picasso explored a wide range of styles and mediums, including painting, sculpture, ceramics, and printmaking. He continuously reinvented himself, producing iconic works that defined 20th-century art. His artistic output is vast, encompassing over 50,000 works, including paintings, drawings, sculptures, ceramics, and prints.
Picasso's influence extended beyond the art world, impacting fashion, design, and popular culture. He remained a prolific artist until his death in 1973 at the age of 91. His legacy continues to inspire artists and art enthusiasts worldwide.
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Interview Questions
What is abstractive summarization and how does it differ from extractive summarization?
How do you extract text content from a Wikipedia page in Python?
What is the role of the
TransformerSummarizer
in thektrain
library?How does the
summarize()
method inTransformerSummarizer
work?Why might you prefer abstractive summarization over extractive methods in some applications?
Which libraries are necessary to perform abstractive summarization with
ktrain
?Can the
ktrain
summarization model handle long documents, and how does it manage input size limits?What are some real-world use cases for abstractive document summarization?
How would you evaluate the quality of summaries generated by a model like
ktrain
’sTransformerSummarizer
?What are the advantages of using a transformer-based model for text summarization tasks?