This course will help us to evaluate and compare the models we have developed in previous courses. So far we have developed techniques for regression and classification, but how low should the error of a classifier be (for example) before we decide that the classifier is "good enough"? Or how do we decide which of two regression algorithms is better? By the end of this course you will be familiar with diagnostic techniques that allow you to evaluate and compare classifiers, as well as performance measures that can be used in different regression and classification scenarios. We will also study the training/validation/test pipeline, which can be used to ensure that the models you develop will generalize well to new (or "unseen") data.
이 강좌는 Python Data Products for Predictive Analytics 전문 분야의 일부입니다.
Meaningful Predictive Modeling
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About this Course
최근 조회 4,341회
배울 내용
Understand the definitions of simple error measures (e.g. MSE, accuracy, precision/recall).
Evaluate the performance of regressors / classifiers using the above measures.
Understand the difference between training/testing performance, and generalizability.
Understand techniques to avoid overfitting and achieve good generalization performance.
강의 계획 - 이 강좌에서 배울 내용
주
1완료하는 데 2시간 필요
Week 1: Diagnostics for Data
For this first week, we will go over the syllabus, download all course materials, and get your system up and running for the course. We will also introduce the basics of diagnostics for the results of supervised learning.
6개 동영상 (총 49분), 4 readings, 3 quizzes
6개의 동영상
Motivation Behind the MSE8m
Regression Diagnostics: MSE and R²6m
Over- and Under-Fitting6m
Classification Diagnostics: Accuracy and Error11m
Classification Diagnostics: Precision and Recall12m
4개의 읽기 자료
Syllabus10m
Setting Up Your System10m
(Optional) Additional Resources and Recommended Readings10m
Course Materials10m
3개 연습문제
Review: Regression Diagnostics8m
Review: Classification Diagnostics4m
Diagnostics for Data30m
주
2완료하는 데 2시간 필요
Week 2: Codebases, Regularization, and Evaluating a Model
This week, we will learn how to create a simple bag of words for analysis. We will also cover regularization and why it matters when building a model. Lastly, we will evaluate a model with regularization, focusing on classifiers.
4개 동영상 (총 35분), 4 quizzes
4개의 동영상
Model Complexity and Regularization10m
Adding a Regularizer to our Model, and Evaluating the Regularized Model8m
Evaluating Classifiers for Ranking4m
4개 연습문제
Review: Setting Up a Codebase2m
Review: Regularization5m
Review: Evaluating a Model5m
Codebases, Regularization, and Evaluating a Model45m
주
3완료하는 데 1시간 필요
Week 3: Validation and Pipelines
This week, we will learn about validation and how to implement it in tandem with training and testing. We will also cover how to implement a regularization pipeline in Python and introduce a few guidelines for best practices.
4개 동영상 (총 24분), 3 quizzes
4개의 동영상
“Theorems” About Training, Testing, and Validation8m
Implementing a Regularization Pipeline in Python5m
Guidelines on the Implementation of Predictive Pipelines5m
3개 연습문제
Review: Validation4m
Review: Predictive Pipelines6m
Predictive Pipelines20m
주
4완료하는 데 2시간 필요
Final Project
In the final week of this course, you will continue building on the project from the first and second courses of Python Data Products for Predictive Analytics with simple predictive machine learning algorithms. Find a dataset, clean it, and perform basic analyses on the data. Evaluate your model, validate your analyses, and make sure you aren't overfitting the data.
2 readings, 1 quiz
2개의 읽기 자료
Project Description10m
Where to Find Datasets10m
강사
Julian McAuley
Assistant ProfessorComputer Science
Ilkay Altintas
Chief Data Science OfficerSan Diego Supercomputer Center
캘리포니아 샌디에고 대학교 정보
UC San Diego is an academic powerhouse and economic engine, recognized as one of the top 10 public universities by U.S. News and World Report. Innovation is central to who we are and what we do. Here, students learn that knowledge isn't just acquired in the classroom—life is their laboratory.
Python Data Products for Predictive Analytics 전문 분야 정보
Python data products are powering the AI revolution. Top companies like Google, Facebook, and Netflix use predictive analytics to improve the products and services we use every day. Take your Python skills to the next level and learn to make accurate predictions with data-driven systems and deploy machine learning models with this four-course Specialization from UC San Diego.
This Specialization is for learners who are proficient with the basics of Python. You’ll start by creating your first data strategy. You’ll also develop statistical models, devise data-driven workflows, and learn to make meaningful predictions for a wide-range of business and research purposes. Finally, you’ll use design thinking methodology and data science techniques to extract insights from a wide range of data sources. This is your chance to master one of the technology industry’s most in-demand skills.
Python Data Products for Predictive Analytics is taught by Professor Ilkay Altintas, Ph.D. and Julian McAuley. Dr. Alintas is a prominent figure in the data science community and the designer of the highly-popular Big Data Specialization on Coursera. She has helped educate hundreds of thousands of learners on how to unlock value from massive datasets.
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