TF-IDF | Introduction to Text Analytics with R | Part 5 скачать в хорошем качестве

TF-IDF | Introduction to Text Analytics with R | Part 5

This talk provides an overview of TF-IDF and includes: 1. Discussion of how the document-term frequency matrix representation can be improved: – How to deal with documents of unequal lengths. – What to do about terms that are very common across documents. 2. Introduction of the mighty term frequency-inverse document frequency (TF-IDF) to implement these improvements: -TF for dealing with documents of unequal lengths. -IDF for dealing with terms that appear frequently across documents. 3. Implementation of TF-IDF using R functions and applying TF-IDF to document-term frequency matrices. 4. Data cleaning of matrices post TF-IDF weighting/transformation. The data and R code used in this series is available here: https://code.datasciencedojo.com/data... Table of contents: 0:00 Introduction 7:08 Term Frequency 10:12 Inverse document frequency 12:55 TDIDF 13:21 Setting up the environment 17:42 Combining the functions 19:03 Transform 21:27 Calculate 25:52 Transpose 27:04 Testing -- At Data Science Dojo, we believe data science is for everyone. Our data science trainings have been attended by more than 10,000 employees from over 2,500 companies globally, including many leaders in tech like Microsoft, Google, and Facebook. For more information please visit: https://hubs.la/Q01Z-13k0 💼 Learn to build LLM-powered apps in just 40 hours with our Large Language Models bootcamp: https://hubs.la/Q01ZZGL-0 💼 Get started in the world of data with our top-rated data science bootcamp: https://hubs.la/Q01ZZDpt0 💼 Master Python for data science, analytics, machine learning, and data engineering: https://hubs.la/Q01ZZD-s0 💼 Explore, analyze, and visualize your data with Power BI desktop: https://hubs.la/Q01ZZF8B0 -- Unleash your data science potential for FREE! Dive into our tutorials, events & courses today! 📚 Learn the essentials of data science and analytics with our data science tutorials: https://hubs.la/Q01ZZJJK0 📚 Stay ahead of the curve with the latest data science content, subscribe to our newsletter now: https://hubs.la/Q01ZZBy10 📚 Connect with other data scientists and AI professionals at our community events: https://hubs.la/Q01ZZLd80 📚 Checkout our free data science courses: https://hubs.la/Q01ZZMcm0 📚 Get your daily dose of data science with our trending blogs: https://hubs.la/Q01ZZMWl0 -- 📱 Social media links Connect with us:   / data-science-dojo   Follow us:   / datasciencedojo   Keep up with us:   / data_science_dojo   Like us:   / datasciencedojo   Find us: https://www.threads.net/@data_science... -- Also, join our communities: LinkedIn:   / 13601597   Twitter:   / 1677363761399865344   Facebook:   / aiandmachinelearningforeveryone   Vimeo: https://vimeo.com/datasciencedojo Discord:   / discord   _ Want to share your data science knowledge? Boost your profile and share your knowledge with our community: https://hubs.la/Q01ZZNCn0 #rprogramming #textanalytics