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學生對 约翰霍普金斯大学 提供的 Advanced Linear Models for Data Science 1: Least Squares 的評價和反饋

4.4
154 個評分
39 條評論

課程概述

Welcome to the Advanced Linear Models for Data Science Class 1: Least Squares. This class is an introduction to least squares from a linear algebraic and mathematical perspective. Before beginning the class make sure that you have the following: - A basic understanding of linear algebra and multivariate calculus. - A basic understanding of statistics and regression models. - At least a little familiarity with proof based mathematics. - Basic knowledge of the R programming language. After taking this course, students will have a firm foundation in a linear algebraic treatment of regression modeling. This will greatly augment applied data scientists' general understanding of regression models....

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DL
2016年6月7日

We need more advanced, theoretical courses on Coursera, like this one, in order to deeply understand the more general courses like Regression Models and Linear Models.

JL
2020年5月16日

I really enjoyed the course. It was well explained and the quizzes at regular intervals were helpful. It would be great if there were some practice exercises though...

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1 - Advanced Linear Models for Data Science 1: Least Squares 的 25 個評論(共 39 個)

創建者 Andrea G

2018年2月11日

This course is very interesting and Professor Caffo is very good at teaching. The proposed material is not very well organised and even if there are multiple sources available (videos, book, YT videos) they all say the exact same things (literally): it isn't helpful, only redundant. Moreover, I felt a lack of context: yes, it is only a 6 weeks course and yes there is a strict relationship with at least other 5 courses on Coursera (as a prerequisite) so it may be hard to contextualise. Nevertheless the material seems to be taken here and there from other courses/specialisations so you often have the feeling that you are missing something that may have been said in a previous lesson that does not belong to this course (and I am not talking about basic linear algebra stuff) or you wonder "what are we trying to prove? And why?". Material desperately lacks homogeneity, and it's easy to lose focus. Last but not least: R is a prerequisite, which is a bit strange since the topic is very theoretical (and there are no practical references throughout the course). R is mainly used by the professor to prove that theory is right (Wouldn't be more interesting to take advantage of R's plotting capabilities to have a visual result of theory?) or there are quiz questions that require the usage of R to get the answer (Why? Am I supposed to learn R or Least Squares?). Sometimes you feel like this is not a standalone, focused course, but an appendix of other specialisations. Overall it's a good course, very interesting topic, made harder by material that is a bit collected here and there and put together without the care the subject would require. My suggestion is to enroll only after completing Statistical Inference and Regression Models (both by B. Caffo) so that language and context are the same.

創建者 Harold S

2016年7月31日

Lectures are monotonous. Not enough exercises.

創建者 Sean C

2019年10月29日

I was expecting more practical examples in R.

創建者 Francisco R A

2017年11月4日

The topics covered by this course were really relevant, and it allowed me to better understand many things I have been using blindly for years. That being said, the course preparation by the lecturer appears quite careless. The videos are difficult to follow, with the electronic pen not helpful to comprehend the handwriting and full of mistakes the lecturer needs to correct constantly. Moreover, the quizs have included errors apparently for a long time, as the forums reflect, and no one has corrected them so far. The book recommended for the course is still in a very poor state, not only unfinished but also full of mistakes, making the task of linking the content it includes with the lecturer's explanations challenging at times. Fortunately, I did not pay for it, as it can be obtained for free if the student desires. However, those who spend the money the platform recommends to pay will have heavy reasons to be upset.

創建者 Emanuel N

2019年3月9日

The teacher is like explaining to himself with no idea of who is in the other side. He knows the material but the course is just so boring and not becuse of the material itself but because of the way it is tought.

創建者 Rumian R

2020年8月7日

This course was revelation upon revelation (in addition to refreshing/re-envisioning some basics). I appreciated the connections between Principal Component Decomposition, Eigenvalue Decomposition, and Singular Value Decomposition.

My only issue was with vector notation, but otherwise I recommend this course for anyone who wants an intimate understanding in Least Squares regression.

創建者 jayson l

2020年5月17日

I really enjoyed the course. It was well explained and the quizzes at regular intervals were helpful. It would be great if there were some practice exercises though...

創建者 Do H L

2016年6月8日

We need more advanced, theoretical courses on Coursera, like this one, in order to deeply understand the more general courses like Regression Models and Linear Models.

創建者 Sarvesh P

2017年4月30日

Good mathematical rigour for the analysis of linear models. Builds some good intuition for the geometry of least squares which helps in model result interpretation.

創建者 김은산

2020年6月17日

This is a very good lecture for a understanding the regression in the view of linear algebra. However, a prior understanding of some linear algebra is needed.

創建者 Hernán M

2016年6月12日

As the name says it's an advanced course. Take the challenge though! In my opinion the content is a must if you want to perform competently in data science.

創建者 Soutik H

2020年9月13日

Excellent experience. I have learnt a lot in different aspect of linear models as well as the coding skills from this course. Thank you.

創建者 Yasmine G

2020年7月25日

Great refresher of linear algebra

understood many things about linear models that I just knew superficially from its cores

創建者 Srikanth K S

2016年9月27日

chapter on bases showing four equivalent forms was brilliant! Hoping to learn BLUE, GAMs in part 2.

創建者 Brady H

2017年3月21日

good course that teaches these kind of hard work in an easier understanding way.

創建者 Debarya J

2017年4月23日

A wonderful course to study! Prof. Brian Caffo explains so well!

創建者 Ian K

2020年8月12日

Thank you. A very challenging and deeply insightful course.

創建者 John C

2018年3月5日

Very thorough and rigorous. A great review for me.

創建者 Dmitriy

2017年4月25日

Good and not overloaded. Recommended.

創建者 Roney

2017年6月6日

Very helpful! Tanks!

創建者 RAMAKRISHNA R

2020年6月30日

Excellent course

創建者 Lyu m

2016年9月18日

good course!

創建者 Chad W L

2018年4月17日

Very good

創建者 Herson N M

2016年12月17日

Advanced

創建者 Ryan G

2019年6月11日

The coding videos with R are outdated. But this is to be expected since R is open-source and changing rapidly. The code videos should be updated frequently to coincide with the latest release of R and R Studio. I like that code example content is placed into separate videos. The videos are very clear and easy to see. If lecture segments are re-worked, I'd suggest writing in a single column, and keeping the new content always in the center of the screen. There is some inconsistencies in the notation, and some content is repeated too often. But it's not like salt: too much isn't nearly as bad as not enough.