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IT1005

IT1005. Lab session on week 5. About your Lab TA. Name: Steven Halim (Indonesian) Occupation: Full time teaching assistant Part time PhD student Not yet professor, so just call me by name! Want to graduate soon >.< My problem: I am handling 5 lab groups this semester

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IT1005

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  1. IT1005 Lab session on week 5

  2. About your Lab TA • Name: Steven Halim (Indonesian) • Occupation: • Full time teaching assistant • Part time PhD student • Not yet professor, so just call me by name! • Want to graduate soon >.< • My problem: • I am handling 5 lab groups this semester • That means 5*~20 = ~100 students • 100 emails/lab submissions per week

  3. To make life easier for me • E-mail answers to: stevenhalim at gmail.com • With subject header: • “IT1005-LabGroupID” “FullName”, • e.g. IT1005-7A StevenHalim • I will ask Mr Gmail to sort your emails for me =) • Try to submit your answers ONCE only • Do not submit again to fix some minor mistakes! • Shorter (but correct) answers ~ better marks =) • Remember, I have ~100 emails/week !

  4. Just some highlights on the rules posted by Colin IT1005 Lab Policies Applies to Lab 2 onwards

  5. Lab Location • Lab sessions begin Monday 11 Feb 2008. • All A groups are at SOC1/815 PC Lab 2. • All B groups are at COM1/114 Embedded Systems Teaching Lab 1. • You can use your own computer/laptop • You can use the MATLAB clusters in FOE • ChBE Clusters at E5-03-24 (24 hour access) • Check this link for other clusters that you can also use: http://www.eng.nus.edu.sg/eitu/about_us/aboutus6.htm

  6. Lab Policies • Lab attendance: • You are free to do the labs in FoE (or at home) instead of going down to SoC1/COM1. • However if you have a question to ask, you can only do it during the lab session. • Your tutor will be waiting for you during the session. • This means that you should at least look through the lab ahead of the official session in case you need to see him/her. • Exception for me: you can email me, but the best way to explain is hands on during the lab session. • Also with subject header “IT1005 – your question bla bla” • Try to post questions in IT1005 IVLE Forum first, especially if your question is generic.

  7. Lab Policies • Lab Submission • Electronic submission via email to your respective tutors. • Your tutors will contact you via email ahead of time so you know whom to submit to. • Your grades will be returned to you electronically as well. • For this, use my gmail subject labeling scheme explained previously, ok!

  8. You do not need to attend labs! • MATLABs are available in FoE labs. • I was told that some of you also have MATLAB in your very own laptop. • But…

  9. But it is better to attend labs, why? • I will review past lectures (~15m). • I will help you to keep pace with the lectures. • I will discuss past lab questions (~15m). • Not just the answers, but also common mistakes, and side topics around lab questions. • I will discuss current lab questions (~15m). • Not the answers, but how to tackle them. • I will ask stimulating MATLAB questions (~15m). • 2 hour lab: 1 hour interaction, 1 hour free & easy.

  10. Review of Past Lectures • http://www.comp.nus.edu.sg/~stevenha/myteaching • Click “supplemental materials” for lecture.

  11. Discussion about Lab 0/1 • You can now check your submissions in my website • Everyone can see each other’s marks/comments >.< • Sorry for that… • Special case for lab 0/1 only • Next time, marks/comments will be sent privately • You send your report via email • I will read and reply your email, only you know the marks

  12. Discussion about Lab 0/1-Part A • Common mistakes • Changing the story >.<, strong penalty • Not really answering the question • e.g. “arrive at lecture”, what lecture? what time? • Too long winded, fine as long as logical enough • e.g. 10 large steps vs 3! (Note about human temporary memory) • Funny story, just make me laugh, no penalty • Flat answer, no indentation, minor penalty • You are all different =)

  13. Discussion about Lab 0/1-Part B • Common mistakes • Too long winded

  14. Discussion about Lab 0/1-Part C • Common mistakes or ‘mistakes’ • Average ‘age’? We never say ‘age’ here! • Part i, ii, iii, and iv again! Too long winded • Indentation issue, variable naming issue • Matlab functions vs functions in the problem description! • disp/sprintf vs say, ~= vs !=, ./ vs /, clear all? (not described) • Stopping criteria must be -1, not <0 or anything else! • Excessive usage of comments >.< • Division by zero for extreme case :p (-1 at the start) • Slight error, how to correct the effect of -1?

  15. Quick Test • Simple test to roughly gauge your initial skills: • Convert this Decimals to Binaries: 10, 20, 32. • Convert this Binaries to Decimals: 101, 1001, 1005. • Tell me the actual value of: 1e2, 2e-1. • Write “Hello <yourname>” in MATLAB. • Compute: 234 / (80 + 2) * 72 – 189 \ 5 + 2 in < 10 seconds. • What is sin(pi)? • Create an array of size 4*5, containing all ‘1’. • [1 2] .* [2 1] =[3 4] [2 1]

  16. Lab 2 – Starting Matlab • Let’s follow the instructions!

  17. Top Down Design • A hands on… • Let’s solve this simple problem: • Steven is a young schoolboy. • His mother gives him 25$ pocket money per week. • Steven spends his money wisely. • By the end of each week, he usually has some money to be saved. • A random value between 0.0$ to 25.0$ • Steven wants to know his savings over one year.

  18. Extra Materials • How can you help yourself with MATLAB? • Visit MathWorks website • Go to support  documentation. • e.g. disp versus say, input, sprintf

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