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SESSION | JUL – AUG 2024 |
PROGRAM | MASTER OF BUSINESS ADMINISTRATION (MBA) |
SEMESTER | IV |
COURSE CODE & NAME | DADS402 UNSTRUCTURED DATA ANALYSIS |
Assignment Set – 1
- (a) List down a few differences between structured and unstructured data.
(b) Explain the application of NLP and Taxonomies.
Ans 1.
Differences Between Structured and Unstructured Data
Structured and unstructured data are two distinct forms of data, each with unique characteristics and applications.
Structured data is highly organized and adheres to a predefined schema. It is stored in tabular formats such as rows and columns within relational databases, making it easy to search, manage, and analyze using SQL and other query languages. For example, a database of customer information that includes fields like name, age, email, and purchase history is structured data. This type of data
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- (a) What is a word cloud? Discuss some libraries that you need to import to create a word cloud in python?
(b) Demonstrate some common business applications of text classification.
Ans 2.
Word Cloud and Python Libraries for Its Creation
Word Cloud
A word cloud is a popular visualization tool that highlights the most frequent words in a text corpus by displaying them in varying font sizes. Larger fonts represent higher word frequencies or importance, while smaller fonts denote less frequent terms. Word clouds are particularly useful for summarizing unstructured text data, such as customer reviews, speeches, or social media
- (a) How do you perform sentiment analysis using python?
(b) What is latent dirichlet allocation (LDA)?
Ans 3.
(a) Performing Sentiment Analysis Using Python
Sentiment analysis, also known as opinion mining, is a process of determining the emotional tone behind a piece of text. It is commonly used to analyze social media posts, customer reviews, and other forms of unstructured text to gauge opinions or sentiments as positive, negative, or neutral. In
Assignment Set – 2
- (a) How NoSQL databases different from relational databases?
(b) What is the main feature of MongoDB that sets it apart from relational databases?
Ans 4.
(a) Differences Between NoSQL and Relational Databases
Relational databases and NoSQL databases represent two fundamentally different approaches to data storage and management.
Relational databases, such as MySQL, PostgreSQL, and Oracle, are based on a tabular structure where data is stored in rows and columns. These databases use a predefined schema, which enforces strict
- (a) How can you visualize an audio signal?
(b) What is Acoustic Data Classification?
Ans 5.
(a) Visualizing an Audio Signal
Audio signal visualization involves graphically representing sound waves to analyze their features, such as amplitude, frequency, and duration. This is essential for understanding the characteristics of audio signals and processing them in various applications, including speech recognition, music analysis, and sound engineering. Audio signals are typically represented as waveforms, spectrograms, or
- (a) How does histogram equalization work?
(b) What are the key components of a CNN for image classification?
Ans 6.
(a) How Histogram Equalization Works
Histogram equalization is a technique used in image processing to enhance the contrast of an image by redistributing its pixel intensity values. The goal is to achieve a more uniform histogram, where the intensity levels are spread out across the full range of possible values (e.g., 0 to 255