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Natural Language Processing with Java

You're reading from   Natural Language Processing with Java Techniques for building machine learning and neural network models for NLP

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Product type Paperback
Published in Jul 2018
Publisher
ISBN-13 9781788993494
Length 318 pages
Edition 2nd Edition
Languages
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Authors (2):
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Ashish Bhatia Ashish Bhatia
Author Profile Icon Ashish Bhatia
Ashish Bhatia
Richard M. Reese Richard M. Reese
Author Profile Icon Richard M. Reese
Richard M. Reese
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Table of Contents (19) Chapters Close

Title Page
Dedication
Packt Upsell
Contributors
Preface
1. Introduction to NLP 2. Finding Parts of Text FREE CHAPTER 3. Finding Sentences 4. Finding People and Things 5. Detecting Part of Speech 6. Representing Text with Features 7. Information Retrieval 8. Classifying Texts and Documents 9. Topic Modeling 10. Using Parsers to Extract Relationships 11. Combined Pipeline 12. Creating a Chatbot 1. Other Books You May Enjoy Index

Distributed stochastic neighbor embedding


T-distributed Stochastic Neighbor Embedding (t-SNE), which is widely used in machine learning, is a non-linear, non-deterministic algorithm that creates a two-dimensional map of data with thousands of dimensions.

In other words, it transforms data in a high-dimensional space to fit into a 2D plane. t-SNE tries to hold, or preserve, the local neighbors in the data. It is a very popular approach for dimensionality reduction, as it is very flexible and able to find the structure or relationships in the data where other algorithms fail. It does this by calculating the probability of object i picking potential neighbor j. It will pick up the similar object from high dimension as it will have a higher probability than a less similar object. It uses the Euclidean distance between the objects as a basis for similarity metrics. t-SNE uses the perplexity feature to fine-tune and decide how to balance local and global data.

t-SNE implementation is available in...

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