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Data Labeling in Machine Learning with Python

Data Labeling in Machine Learning with Python

By : Vijaya Kumar Suda
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Data Labeling in Machine Learning with Python

Data Labeling in Machine Learning with Python

5 (3)
By: Vijaya Kumar Suda

Overview of this book

Data labeling is the invisible hand that guides the power of artificial intelligence and machine learning. In today’s data-driven world, mastering data labeling is not just an advantage, it’s a necessity. Data Labeling in Machine Learning with Python empowers you to unearth value from raw data, create intelligent systems, and influence the course of technological evolution. With this book, you'll discover the art of employing summary statistics, weak supervision, programmatic rules, and heuristics to assign labels to unlabeled training data programmatically. As you progress, you'll be able to enhance your datasets by mastering the intricacies of semi-supervised learning and data augmentation. Venturing further into the data landscape, you'll immerse yourself in the annotation of image, video, and audio data, harnessing the power of Python libraries such as seaborn, matplotlib, cv2, librosa, openai, and langchain. With hands-on guidance and practical examples, you'll gain proficiency in annotating diverse data types effectively. By the end of this book, you’ll have the practical expertise to programmatically label diverse data types and enhance datasets, unlocking the full potential of your data.
Table of Contents (18 chapters)
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1
Part 1: Labeling Tabular Data
5
Part 2: Labeling Image Data
9
Part 3: Labeling Text, Audio, and Video Data

Visualizing audio data with matplotlib and Librosa

Visualizations play a crucial role in understanding and interpreting audio data. Here’s a comparison of different types of visualizations for audio data and their uses in various scenarios. The choice of visualization depends on the specific goals of the analysis, the nature of the audio data, and the intended application. Combining multiple visualizations can provide a comprehensive understanding of complex audio signals.

This section demonstrates how to visualize audio data, an essential skill in audio analysis.

Waveform visualization

A waveform is a simple plot that shows how the audio signal changes over time. It’s like looking at the ups and downs of the audio as a line graph. In other words, a waveform represents the amplitude of the audio signal over time:

import librosa
import librosa.display
import matplotlib.pyplot as plt
# Load an audio file
audio_file = "sample_audio.wav"
y, sr = librosa...
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Data Labeling in Machine Learning with Python
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