CSIE1212: Data Structures and Algorithms

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CSIE1212: Data Structures and Algorithms

Hsuan-Tien Lin

Dept. of CSIE, NTU

Course Introduction, March 3, 2020

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今天(3/3)不會現場發授權碼

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Three Warnings Before (Signing for) the Course (1/3)

警告: High Expectations

• goal of NTU DSA class:

as good as the best ones in the world

• tentatively, 6 homework sets and final project

(http://www.csie.ntu.edu.tw/~htlin/course/dsa20spring)

• will haveHW1 next week

• writing assignments andtime-consumingprogramming assignments

be prepared towork hard!

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Three Warnings Before (Signing for) the Course (1/3)

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Three Warnings Before (Signing for) the Course (1/3)

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Three Warnings Before (Signing for) the Course (1/3)

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Three Warnings Before (Signing for) the Course (1/3)

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Three Warnings Before (Signing for) the Course (2/3)

警告: Strict Instructor

• Will you give me a second chance if I copy homework from other people? No.

• Could you let me pass because I will be kicked out by the 1/2 rule?No.

• Will you change my score from F to C? No. be prepared tofollow the rules!

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Three Warnings Before (Signing for) the Course (2/3)

• Will you change my score from F to C? No. be prepared tofollow the rules!

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Three Warnings Before (Signing for) the Course (2/3)

• Will you change my score from F to C? No.

be prepared tofollow the rules!

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Three Warnings Before (Signing for) the Course (2/3)

• Will you change my score from F to C? No.

be prepared tofollow the rules!

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Three Warnings Before (Signing for) the Course (3/3)

警告: Uncertain Outcome

• sixth-time teaching this course, but first timeafter five years

• ambitious and willing toexperiment

—live screencast teaching, for instance

• How many people will not pass? I don’t know yet.

• Will your investment (time) get good return (knowledge)? No guarantees, but I’ll try my best.

be prepared totake some risks!

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Three Warnings Before (Signing for) the Course (3/3)

• How many people will not pass? I don’t know yet.

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Three Warnings Before (Signing for) the Course (3/3)

• How many people will not pass?

I don’t know yet.

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Three Warnings Before (Signing for) the Course (3/3)

I don’t know yet.

• Will your investment (time) get good return (knowledge)?

No guarantees, but I’ll try my best.

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Three Warnings Before (Signing for) the Course (3/3)

I don’t know yet.

• Will your investment (time) get good return (knowledge)?

No guarantees, but I’ll try my best.

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Wise Words

給資訊系的同學們：努力加油

給想加選的同學們：審慎考慮

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Some Historical Notes

Once upon a time, when I was a freshman in NTU CSIE (1997)...

• 「計程」有兩學期，上學期教C，下學期教C++

• 大二上學期教「資料結構」

• 大二下學期教「演算法」

Then, in my senior year (2001)...

• 「計程」變成一學期，大一下學期教「物件導向程式設計」(Java)

• 大二上學期教「資料結構與演算法上」

• 大二下學期教「資料結構與演算法下」

Then, starting 2010...

• 物件導向程式設計變為選修

• 大一下學期教「資料結構與演算法」

• 大二上學期教「演算法設計與分析」

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Some Historical Notes

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Some Historical Notes

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Some Historical Notes

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Some Historical Notes

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Some Historical Notes

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Some Historical Notes

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Some Historical Notes

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Some Historical Notes

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Reasons

• 兩學期的「計程」變成一學期、「物件導向程式設計」變成選修 :

相信同學們可以有自己學習不同語言的能力。

• 把「資料結構」及「演算法」合成一門課 :

兩者互相依賴，其實不容易分散來教。

• 把「資料結構與演算法上/下」區分成「資料結構與演算法」和

「演算法設計與分析」 :

• 前者以實作為主，銜接計程做更深入的程式練習

• 後者以分析為主，建立在前者的基礎上探討更多不同的演算法

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Reasons

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Reasons

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Basic Information

• instructor:

林軒田Hsuan-Tien Lin (htlin@csie.ntu.edu.tw)

• office hour: after class or by appointment

• course webpage, mailing list:

http://ceiba.ntu.edu.tw/1082dsa01(CEIBA)

• course contents actually in

www.csie.ntu.edu.tw/~htlin/course/dsa20spring

• course time: Tuesdays 13:20–16:20

• 10-min break liberally in the middle

• 10-min more teaching to fit 16 weeks

• 10-min earlier ending (i.e. usually ends 16:10) to be fair

Update your secondary email address on CEIBA!

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Basic Information

• instructor:

林軒田Hsuan-Tien Lin (htlin@csie.ntu.edu.tw)

• office hour: after class or by appointment

• course webpage, mailing list:

http://ceiba.ntu.edu.tw/1082dsa01(CEIBA)

• course contents actually in

www.csie.ntu.edu.tw/~htlin/course/dsa20spring

• course time: Tuesdays 13:20–16:20

• 10-min break liberally in the middle

• 10-min more teaching to fit 16 weeks

• 10-min earlier ending (i.e. usually ends 16:10) to be fair Update your secondary email address on CEIBA!

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Instructor: Strict but Friendly

• Will you repeat the previous code/slide again? Yes.

• Will you discuss with me after class if I don’t understand? Yes.

• Will you pardon my silly questions? There arenosilly questions. Feel free to ask me questions and give me feedback!

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Instructor: Strict but Friendly

• Will you pardon my silly questions? There arenosilly questions. Feel free to ask me questions and give me feedback!

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Instructor: Strict but Friendly

• Will you pardon my silly questions?

There arenosilly questions. Feel free to ask me questions and give me feedback!

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Instructor: Strict but Friendly

• Will you pardon my silly questions? There arenosilly questions.

Feel free to ask me questions and give me feedback!

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Instructor: Strict but Friendly

• Will you pardon my silly questions? There arenosilly questions.

Feel free to ask me questions and give me feedback!

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Enrollment

• 98 seats in room 102, limit = 98 ∗ 125% ≈ 123

• priority-based:

• zeroth: NTU CSIE

• first: NTU EECS

• other: NTU

• signup form: https://forms.gle/ETFC3AsQXW2GYYFU7

—will start processing on 03/04/2020

• auditing: welcomed (to sit) only if there is an empty chair please think before you choose to enroll

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Enrollment

• priority-based:

• first: NTU EECS

• other: NTU

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Enrollment

• priority-based:

• first: NTU EECS

• other: NTU

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Enrollment

• priority-based:

• first: NTU EECS

• other: NTU

• auditing: welcomed (to sit) only if there is an empty chair

please think before you choose to enroll

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Enrollment

• priority-based:

• first: NTU EECS

• other: NTU

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Teaching Assistants

• TAs (tentatively): 陳佳佑、周侑廷、李鈺昇、楊皓丞、吳崇維

• TA email: dsa_ta@csie.ntu.edu.tw

—5 TAs and 1 instructor around, usually faster than sending to individual

• office hours: to be announced

very friendly TAs; ask them more questions!

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Teaching Assistants

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Teaching Assistants

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Teaching Assistants

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THE Principle

Taking any unfair advantages over other class members is not allowed.

It is everyone’s responsibility to maximize the level of fairness.

• eating? fine, but no smells and no noise

• sleeping? fine, but no snoring

• cellphone? fine, but silent mode, and speak outside

• ...

applies to instructor, TAs, students

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THE Principle

• ...

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THE Principle

• ...

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THE Principle

• ...

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THE Principle

• ...

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Honesty

NO CHEATING NO LYING NO PLAGIARISM

very very very very serious consequences

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Honesty

NO CHEATING NO LYING NO PLAGIARISM

very very very very serious consequences

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Grade

• homework (best * 1.5 + worst * 0.5 + others), midterm, final project

• supplementary reference: participation in discussions

• raw score goes through some order-preserving normalization steps,not just using default thresholds of university

• raw score 80 with term rank A: possible

• raw score 80 with term rank B: possible

• raw score 60 with term rank F: possible

• raw scores 80, 60 with term scores B, B: possible, but unlikely

• raw scores 80, 60 with term scores F, B:impossible from the principle: no individual score change

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Grade

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Grade

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Grade

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Grade

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Grade

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Grade

• raw scores 80, 60 with term scores F, B:impossible

from the principle: no individual score change

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Grade

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Collaboration and Open-Book

• homework discussions: encouraged

• but fairness?

write the final solutions alone and understand them fully

• references (books, notes, Internet): consulted, butnot copied from

• no need to lend/borrow solutions

to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed

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Collaboration and Open-Book

• but fairness?

• references (books, notes, Internet): consulted, butnot copied from

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Collaboration and Open-Book

• but fairness?

• references (books, notes, Internet):

consulted, butnot copied from

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Collaboration and Open-Book

• but fairness?

• references (books, notes, Internet):

consulted, butnot copied from

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Collaboration and Open-Book

to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed Deal? If your classmate wants to borrow homework from you,

what do you say?

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Collaboration and Open-Book

to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed

to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed Deal? If your classmate wants to borrow homework from you,

what do you say?

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Collaboration and Open-Book

to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed

Deal? If your classmate wants to borrow homework from you, what do you say?

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Collaboration and Open-Book

to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed to maximize fairness (everyone’s responsibility), lending/borrowing/buying/selling not allowed Deal? If your classmate wants to borrow homework from you,

what do you say?

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Homework

• students: justify solutions clearly

• TAs: evaluate solutions fairly

• no individual extension unless not violating the principle (e.g. institute-established cases of illness or emergency)

• late penalty:

90% of the value for 12-hour late, 80% of value for 24-hour late, ... four penalty-free late half-days (金金金牌牌牌) per person

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Homework

• no individual extension unless not violating the principle (e.g.

institute-established cases of illness or emergency)

• late penalty:

90% of the value for 12-hour late, 80% of value for 24-hour late, ... four penalty-free late half-days (金金金牌牌牌) per person

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Homework

• late penalty:

90% of the value for 12-hour late, 80% of value for 24-hour late, ...

four penalty-free late half-days (金金金牌牌牌) per person

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Homework

• late penalty:

90% of the value for 12-hour late, 80% of value for 24-hour late, ...

four penalty-free late half-days (金金金牌牌牌) per person

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Textbook

Data Structures and Algorithms in C++, 2nd Edition by Goodrich, Tamassia and Mount.

• please get it as early as possible

• will teach selected parts from it, andask you to read others learning to read a textbook is part of the course

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Textbook

Data Structures and Algorithms in C++, 2nd Edition by Goodrich, Tamassia and Mount.

• please get it as early as possible

• will teach selected parts from it, andask you to read others learning to read a textbook is part of the course

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Getting the Book to Read

• NTU Library: reserved copy in the shared course material area

• R536: will put some shared copies to be read in the room

• If the book is not affordable to you: email me

(htlin@csie.ntu.edu.tw) and I’ll see how I can help.

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Getting the Book to Read

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Getting the Book to Read

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Reading Assignments

• weekly

• sections related to what we teach, or sections that are worth reading by yourself

—we cannot teach all, but with reading you can learn all

• 3-6: 3 hour teaching, 6 hour reading/writing after class

some problems related to reading assignments may show up in your writing assignments as well

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Reading Assignments

• weekly

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Reading Assignments

• weekly

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Reading Assignments

• weekly

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Mandarin and English

• Mandarin: main language

• English: often encountered

—coding, website, assignments, some teaching . . .

—important for your future and you are recommended to practice don’t be afraid of English

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Mandarin and English

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Mandarin and English

—important for your future and you are recommended to practice

don’t be afraid of English

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Mandarin and English

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How to Pass the Class?

• catch up from day 1

• ask questions!

• have fun writing programs

• understand writing proof

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Important TODOs

• Update your secondary email address on CEIBA

• Read the policy on the website thoroughly Enjoy the Class! Questions?