[2024/25 CSC 4792] LAB #2: In-Class Quiz (Lecture #03)

[Lighton Phiri]

[2024/25 CSC 4792] LAB #2: In-Class Quiz (Lecture #03)

Hello Everyone, A reminder that Lab #2 is scheduled to be administered today (August 22 2025) at 18H00. The venue is Michael Kelly Lecture Theater located at the School of Education premises. Best wishes, Lighton [2024/25 CSC 4792] LAB #2: In-Class Quiz (Lecture #03) Friday Aug 22, 2025 ⋅ 18:00 – 18:15 (South Africa Standard Time) Location SLH View map Guests

University of Zambia

Great East Road Campus, Lusaka

www.unza.zm

CONFIDENTIAL NOTICE: This message (and its attachments) may contain confidential information. Any unauthorized use or disclosure is prohibited.
If you have received this communication in error, please notify us immediately by responding to this email and then delete it from your system.

[Lighton Phiri]

Hello Everyone,

Please note that Lab #2 solutions have been made available on The Moodle [1] under the "Labs/Quizzes" section.

[1] https://moodle.unza.zm/mod/resource/view.php?id=95628

Best wishes,
Lighton

-- 
Lighton Phiri, PhD
Lecturer and Researcher

Telephone: +26 096 1352662
Email: lighto...@unza.zm
DataLab: https://datalab.unza.zm
EMI Project: https://emi.org.zm
UNZA: https://www.unza.zm

University of Zambia
Great East Road Campus 

Lusaka, Zambia 10101
--

[Joshua Musukambale]

Good Morning Sir. We were expected to Write all that Code in 10 minutes. It was kinda unfair sir, Cause we were dealing with Code and we needed time to a little bit think through the question before Writing Sir.

--
CSC 4792: Data Mining and Warehousing
Department of Computing and Informatics
University of Zambia
P.O. Box 32379, Lusaka 10101, Zambia
Email: csc...@unza.zm
Web: https://groups.google.com/a/unza.zm/g/csc4792
---
You received this message because you are subscribed to the Google Groups "CSC 4792: Data Mining and Warehousing" group.
To unsubscribe from this group and stop receiving emails from it, send an email to csc4792+u...@unza.zm.
To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CABkgXssNU%3Dn8W9seEf2T5coYC9zYKZdT7ZVsrJi0%3DQ2SS_5q3g%40mail.gmail.com.

[Davy Mwansa]

goodmorning sir suppose you did not write the import statement like the one highlighted , do you lose marks 

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CAC0CKoDmDHUC%2BGfVzyoD_CfJqmorQFYdGJuynE8imUokkAN-Dw%40mail.gmail.com.

[Lighton Phiri]

Hello Joshua,

I am not sure what you mean by "ALL THAT CODE", however, you will notice that the model solutions have comments; and in some instances, different alternative solution.

I imagine you are mostly referring to question 1; the first model solution is simply "var_dspace_unza_ir["subject"].str.get_dummies(sep="=")".

Best wishes,
Lighton

-- 
Lighton Phiri, PhD
Lecturer and Researcher

Telephone: +26 096 1352662
Email: lighto...@unza.zm
DataLab: https://datalab.unza.zm
EMI Project: https://emi.org.zm
UNZA: https://www.unza.zm

University of Zambia
Great East Road Campus 
Lusaka, Zambia 10101
--

On Sat, 23 Aug 2025 at 09:01, Joshua Musukambale <joshua.mu...@cs.unza.zm> wrote:

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CAC0CKoDmDHUC%2BGfVzyoD_CfJqmorQFYdGJuynE8imUokkAN-Dw%40mail.gmail.com.

[Lighton Phiri]

Hello Davy,

No! We shall award full marks irrespective of whether you include import statements or not.

Best wishes,
Lighton

-- 
Lighton Phiri, PhD
Lecturer and Researcher

Telephone: +26 096 1352662
Email: lighto...@unza.zm
DataLab: https://datalab.unza.zm
EMI Project: https://emi.org.zm
UNZA: https://www.unza.zm

University of Zambia
Great East Road Campus 
Lusaka, Zambia 10101
--

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CAP91HQHScBP9KzH66s6gZ3xC_BOnxPLTH3f_MeRjeQfeG9KXVQ%40mail.gmail.com.

[Matthews Mumba]

Still, time wasn’t enough sir 

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CABkgXstmgkj_qUNew%3DUUYouxY%2BKg1v07hofWTr418xd3KeHReA%40mail.gmail.com.

[Lighton Phiri]

Hello Mathews,

Fair enough. We shall give you plenty of time on August 28 2025 during Lab #3.

Incidentally, I am wondering why "time" is such a common theme when some questions are literally from examples discussed in class: we were literally discussing casefolding and removal of stopwords on Friday. In addition, some questions, e.g. (i) were literally an extension of Lab #1.

Best wishes,
Lighton

-- 
Lighton Phiri, PhD
Lecturer and Researcher

Telephone: +26 096 1352662
Email: lighto...@unza.zm
DataLab: https://datalab.unza.zm
EMI Project: https://emi.org.zm
UNZA: https://www.unza.zm

University of Zambia
Great East Road Campus 
Lusaka, Zambia 10101
--

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CAJG1RSAB2v%3DiavyQSXbSYiOO-GrVkXK%2B526A9L_O3qHzMeqhXw%40mail.gmail.com.

[Davy Mwansa]

By the way, the last question was assigned
 one mark but the model answers show it has 2 marks , you probably overlooked 

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CABkgXstcuGh2QHfJ2soA32ok3M84iE5B%2BB3TLc5VzhxwcAom3Q%40mail.gmail.com.

[Lighton Phiri]

Hello Davy,

Thank you very much for this! It is reassuring that some of you are actually going through this material.

I simply copy-pasted content from the previous question: allocation for both components is 0.5 marks. File on The Moodle has been updated.

Best wishes,
Lighton

-- 
Lighton Phiri, PhD
Lecturer and Researcher

Telephone: +26 096 1352662
Email: lighto...@unza.zm
DataLab: https://datalab.unza.zm
EMI Project: https://emi.org.zm
UNZA: https://www.unza.zm

University of Zambia
Great East Road Campus 
Lusaka, Zambia 10101
--

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CAP91HQEaWT3k6tr-vSnW90KOgNBh68ni4HbySmJ1_kAMZEPuMQ%40mail.gmail.com.

[Dennis Chipman]

So we had 10 minutes to think like this and code like this? Just out of curiosity what criteria did you use to give time to the quiz? 3sec reading time? 4sec understanding time? 90sec thinking time? and for the rest of the minutes you assume we already have come up with the solutions for all the questions and we'll just be writing them?

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CABkgXss9haY0GvQA5uaQ3wjm7iJOuGcBsFkCC01yof-hEZZumg%40mail.gmail.com.

[Lighton Phiri]

Hello Dennis (and Everyone),

I want to throw this question back to you. How many minutes do you think it should take for you to respond to the questions:
* Question 1. (i) is an extension of the same exact question asked in Lab #1. How much time do you think you need to answer this question?

* Question 1. (ii) is based on a worked example from class (in fact, this question was literally worked on during our Thursday class---a day before the assessment). How much time did you need to regurgitate the solution?

* Question 1. (iii) is yet again based on a worked example from class (discussed and worked on during our discussion of the CRISP-DM and repeated during the Thursday class---a day before the assessment)

* Question 2. (i) is trivial: no thinking involved really

* Question 2. (ii) is trivial: no thinking involved really

If you have been following through with what is discussed in class and have found time to READ and playback the notebooks, I see no reason why you would fail to attempt those trivial questions in the time allocated. Truth is, if you failed to attempt those questions in 10 minutes, you would struggle even if we gave you two hours to work on them.

You really want to go through those questions one more time and ask yourself if 10 minutes was still not enough to answer questions worked out in class.

Best wishes,
Lighton

-- 
Lighton Phiri, PhD
Lecturer and Researcher

Telephone: +26 096 1352662
Email: lighto...@unza.zm
DataLab: https://datalab.unza.zm
EMI Project: https://emi.org.zm
UNZA: https://www.unza.zm

University of Zambia
Great East Road Campus 
Lusaka, Zambia 10101
--

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CAE_BQBG1RykSBHkPVphTsKacQLhxRKq5hLfHnrKGmDq_JzD-bw%40mail.gmail.com.

[Dennis Chipman]

1. The same question which was worked on in class on Thursday, how many students actually understood what was going on? As a student myself who sees the behind the scenes that you don't I will answer this "the students that understood what was going on are little to non no wonder questions were not asked coz we didn't even know where to start from"

2. You Mostly ask these questions from your point of view thinking we'll answer them and process them as well as you, as far as we're concerned pandas and everything in it is an introduction to most of us coz we have never worked with it before so at least ask questions that even someone with average understanding is able to answer but you ask like you're asking the experienced who are already critical thinkers

3. I'm not saying you are not the best at what you do, actually by observing you, we can tell you know what you're doing but it's just that the way you're doing it, it's not working for us as it supposed to or as you want it too.

4. As much as we have had a lot of classes most of your notes are just a bunch of data that we haven't properly processed yet to turn it into information -> knowledge -> wisdom we are still trying to understand so I would suggest these remaining weeks you work with us so that we actually become the students you want us to be when we understand your point of view 

5. It's like a surgical doctor everytime that doc performs an operation on patients most patients die than they survive then the problem is not really with the patients but with the doc which in this case most of us are failing not because you don't know what you're doing but your approach is causing more harm than good to us, already a couple students are already saying even next week another zero for quiz 3🤷🏽 coz whether they study or not the grades are still poor.

I JUST HOPE YOU DON'T TAKE THIS THE WRONG WAY, YOU'RE A GOOD MAN ACTUALLY A VERY GOOD MAN BUT EVEN GOOD MEN MAKE MISTAKES THAT'S WHY IM SUGGESTING YOU USE ANOTHER APPROACH THAT WILL WORK WITH THE CURRENT STUDENT POPULACE

kind regards.

To view this discussion visit https://groups.google.com/a/unza.zm/d/msgid/csc4792/CABkgXsuKn8Gs771NT5cuoRUN%2BkLm-DcbcBdMQa-dcTdVhchADQ%40mail.gmail.com.