Name: , (Family name) (Given name) Student ID: THE UNIVERSITY OF NEW SOUTH WALES Final Exam COMP6714 Information Retrieval and Web Search TERM T3, 2020 • Time allowed: 10 minutes reading time + 2 hours – Exception: students with extra exam time approved by Equitable Learning Services (ELS) can make submissions after 14:30, 2 December […]
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PowerPoint Presentation Database Fundamentals Introduction to Databases Database Overview What is a database? A handful of tables containing data that are used to retrieve information A collection of potentially useful data that models real-world or conceptual objects and their relationships Objects/Entities like People, items, Purchases, Students etc Relationships like Jim purchased a book Conceptual like
Database Fundamentals Database Fundamentals Normalisation Concepts Normalisation Database designs can be generated by decomposing “Mega” relational schemas into smaller schemas Based on knowledge of the attributes and relationships between them called Functional Dependencies (FDs) These smaller relations satisfy some normal form in that they contain fewer anomalies and that there is no loss of information
COMP3308/3608, Lecture 6b ARTIFICIAL INTELLIGENCE Evaluating and Comparing Classifiers Reference: Witten, Frank, Hall and Pal, ch.5: p.161-194 Russell and Norvig, p.695-697 Irena Koprinska, irena.koprinska@sydney.edu.au COMP3308/3608 AI, week 6b, 2021 1 Outline • Evaluating and comparing classifiers • Empirical evaluation • Measures: error rate and accuracy • Single holdout estimation, repeated holdout • Stratification • Cross-validation
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PowerPoint Presentation COMP30023 – Computer Copyright By PowCoder代写 加微信 powcoder Application Layer – HTTP and HTML • History of the internet • Network Protocol Models (stacks) • OSI vs TCP/IP • Acknowledgement: • These slides are minor modifications of those prepared by University of Melbourne • Top-down approach – We’ll gradually peel away the layers
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COMP30023 – Computer Systems Application Layer – HTTP and HTML History of the internet Copyright By PowCoder代写 加微信 powcoder Network Protocol Models (stacks) OSI vs TCP/IP Acknowledgement: These slides are minor modifications of those prepared by Dr © 4/11 University of Melbourne /22 Top-down approach We’ll gradually peel away the layers over the coming weeks
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Lecture 21: Ethics in Machine Learning: Measuring and Mitigating Algorithmic Bias Introduction to Machine Learning Semester 1, 2022 Copyright @ University of Melbourne 2022. All rights reserved. No part of the publication may be reproduced in any form by print, photoprint, microfilm or any other means without written permission from the author. Copyright By PowCoder代写
Week 7 Question Solutions Professor Yuefeng Li School of Computer Science, Queensland University of Technology (QUT) Concepts of Text Mining and Information Needs Copyright By PowCoder代写 加微信 powcoder There are several definitions of text mining. Text mining is the process of deriving high-quality information from text. It is also referred to as text analytics –
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Week 3 Lecture Question Solutions Professor Yuefeng Li School of Computer Science, Queensland University of Technology (QUT) 1. Processing Text From Words to Terms and Text Statistics Copyright By PowCoder代写 加微信 powcoder The first step for text analysis is to manipulate the text in some way to conduct information retrieval or text analysis. Test processing
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Review and Questions for Week 4 Professor Yuefeng Li School of Computer Science, Queensland University of Technology (QUT) 1. Abstract Model of Ranking Copyright By PowCoder代写 加微信 powcoder Text search or Information Retrieval (IR) is very different from traditional search tasks since it often uses an inverted index (a special data structure) that depends on
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