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学生对 Imperial College London 提供的 Mathematics for Machine Learning: PCA 的评价和反馈

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3,155 个评分

课程概述

This intermediate-level course introduces the mathematical foundations to derive Principal Component Analysis (PCA), a fundamental dimensionality reduction technique. We'll cover some basic statistics of data sets, such as mean values and variances, we'll compute distances and angles between vectors using inner products and derive orthogonal projections of data onto lower-dimensional subspaces. Using all these tools, we'll then derive PCA as a method that minimizes the average squared reconstruction error between data points and their reconstruction. At the end of this course, you'll be familiar with important mathematical concepts and you can implement PCA all by yourself. If you’re struggling, you'll find a set of jupyter notebooks that will allow you to explore properties of the techniques and walk you through what you need to do to get on track. If you are already an expert, this course may refresh some of your knowledge. The lectures, examples and exercises require: 1. Some ability of abstract thinking 2. Good background in linear algebra (e.g., matrix and vector algebra, linear independence, basis) 3. Basic background in multivariate calculus (e.g., partial derivatives, basic optimization) 4. Basic knowledge in python programming and numpy Disclaimer: This course is substantially more abstract and requires more programming than the other two courses of the specialization. However, this type of abstract thinking, algebraic manipulation and programming is necessary if you want to understand and develop machine learning algorithms....

热门审阅

JS

Jul 16, 2018

This is one hell of an inspiring course that demystified the difficult concepts and math behind PCA. Excellent instructors in imparting the these knowledge with easy-to-understand illustrations.

WS

Jul 6, 2021

Now i feel confident about pursuing machine learning courses in the future as I have learned most of the mathematics which will be helpful in building the base for machine learning, data science.

筛选依据：

626 - Mathematics for Machine Learning: PCA 的 650 个评论（共 791 个）

创建者 Wang Z

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Jul 8, 2018

The knowledge introduced in this course is really helpful. However, the programming assignments are very time consuming and not necessarily relevent

创建者 詹閔翔

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Jan 17, 2021

Thank for the excellent course content but i think it would be nice if teacher could do more example or apply than just math formula introduction

创建者 Iurii S

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Mar 26, 2018

Decent explanations of PCA idea, but assignments do not provide a clear feedback of what is wrong with the implementation util you get it right.

创建者 w w

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Aug 27, 2020

this is a great course except the assignment has quite a few bugs and the videos are too short and lack many topics, and the quiz are too short

创建者 Deleted A

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Jun 15, 2020

The First 2 courses of this specialization were very good. I really wish the instructor for this course went into a little more depth.

创建者 Francisco F

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Apr 26, 2020

Average quality with low regard for intuition. Content is often Wikipedia pages or references to own content (chapters of own book).

创建者 NEHAL J

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Apr 21, 2019

The course was highly challenging. I wish some of the explanations were detailed and the assignments had better instructions.

创建者 DHRUV M

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Jan 3, 2021

Course is very high level. many concepts were not understood especially in the last course. Assignments were many confusing.

创建者 Ana P A

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Apr 22, 2019

The professor of other two a way better. This one skips some steps in some explanation that makes the tasks hard to do

创建者 Chuwei L

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Apr 5, 2019

worse than previous courses of machine learning specialization. Really confused me when introduced the inner products.

创建者 SYED H

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Sep 17, 2020

The course needs to introduce more advanced technique and practical examples or create a new Advanced course on this

创建者 YIHONG J

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Jul 8, 2018

Honestly this course is the one worthing attempting. However, last week's content is really messy and challenging.

创建者 Panagiotis T

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Apr 26, 2022

The difficult parts of the course where very superficially discussed in the videos and where lucking examples.

创建者 Hsueh-han W

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Sep 20, 2019

many steps are not clear enough that I have to spend a lot of additional time to figure out the details.

创建者 Thiha A

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Jan 18, 2022

I rarely use Discussion Forums. But for this course, I learnt all from the Discussion Forums. :(

创建者 Chiu T W

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Mar 25, 2023

This programming assignments of this course have many bugs that you need to manually submit it.

创建者 Alfian A H

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Mar 25, 2021

I think this course has many flaws. Some of the explanation from instructor isn't very clear.

创建者 Saurabh M

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Oct 11, 2020

This course is pretty hard. The most important pre-requisite for this course is persistence.

创建者 Suprith R G

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Sep 16, 2019

Tutor is not clear and concise on the concepts. Need more examples for Week 2 and Week 3.

创建者 Vishesh K

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Mar 13, 2020

Good Content but isnt't explained well. if you are motivated by yourself then go for it.

创建者 Sagun S

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Mar 14, 2019

Tough one if you are new to programming or doesn't have excellent understanding of Maths

创建者 Chee-Chan K

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May 30, 2020

explanations are not clear, need to refer to lots of youtube to catch up with course.

创建者 matan a

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Oct 20, 2019

The is a lot of gap from what the lecturer learn and what the assignments requires.

创建者 Yuxuan W

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Oct 5, 2018

Always spending much more time on coding than needed. Same result but no credit :(

创建者 PS

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Mar 2, 2021

Too much material covered too quickly. Needs to be split into seperate modules.