Operations on data become more expensive when the data item is located higher in the memory hierarchy. An operation on data in CPU registers is roughly a million times faster than an operation on a data item that is located in external memory that needs to be fetched first. These data fetches are also called I/O operations and need to be taken into account during the design of an algorithm. The goal of this course is to become familiar with important algorithmic concepts and techniques needed to effectively deal with such problems. We will work with a simplified memory hierarchy, but the notions extend naturally to more realistic models.
Prerequisites:
In order to successfully take this course, you should already have a basic knowledge of algorithms and mathematics. Here's a short list of what you are supposed to know:
- O-notation, Ω-notation, Θ-notation; how to analyze algorithms
- Basic calculus: manipulating summations, solving recurrences, working with logarithms, etc.
- Basic probability theory: events, probability distributions, random variables, expected values etc.
- Basic data structures: linked lists, stacks, queues, heaps
- (Balanced) binary search trees
- Basic sorting algorithms, for example MergeSort, InsertionSort, QuickSort
- Graph terminology, representations of graphs (adjacency lists and adjacency matrix), basic graph algorithms (BFS, DFS, topological sort, shortest paths)
The material for this course is based on the course notes that can be found under the resources tab. We will not cover everything from the course notes. The course notes are there both for students who did not fully understand the lectures as well as for students who would like to dive deeper into the topics.
The video lectures contain a few very minor mistakes. A list of these mistakes can be found under resources. If you think you found an error, report a problem by clicking the square flag at the bottom of the lecture or quiz where you found the error....
최상위 리뷰
필터링 기준:
I/O-efficient algorithms의 5개 리뷰 중 1~5
교육 기관: Natarajan C
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Nov 06, 2019
Everything was clearly explained and the questions were quite intuitive and checking my knowledge. More examples for different scenarios too would help us a lot to learn more.
교육 기관: 周柏宇
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Jan 31, 2020
An introduction to the I\O-efficient algorithms. Short and sweet!
교육 기관: vignesh p
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Jul 03, 2020
Very precise and efficient course.
교육 기관: Sergio G
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Apr 28, 2020
Excellent
Thanks for the tuition
교육 기관: Nicholas P
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Jun 25, 2020
Great introduction the I/O-centric model of computation. The course was fairly easy to follow but the quizzes were a bit confusing at times. There's also not much support going around in the discussion boards. Nevertheless, the material is easily self-teachable and you'll come out of the course knowing a couple more tools and tricks than you started with.
