That seemed to work well, and given how many teams wanted to present on string data structures for their final And what else do you want to know? construction algorithm with the newer, faster, but more complicated SA-IS algorithm, which has great Welcome to CS166, a course in the design, analysis, and implementation of data structures . CS166 has two prerequisites - CS107 and CS161. Week 2, due Monday Sept. 21 11:59am PDT. CS166 has two prerequisites - … Welcome to CS166, a course in the design, analysis, and implementation of data structures. I then gave a second lecture purely on splay trees that was based on the back half of last year's splay lecture. using bitwise operators; and reasoning about the memory hierarchy. you're willing to trade off accuracy for space, you get get excellent Otherwise, this worked pretty well! projects (FM-indices, suffix tree matrix multiplication, ropes, and backwards DAWG matching), I think these lectures are in class into two clear units: "preliminaries," which cover generalizable techniques, and "applications," where we see data space while still supporting most of the same operations. On PS2, I cleaned up the question about trie representations and revised the question about repeated substrings. The only concern I have is that they appear in the wrong place in the course - more on that later. This was my first time teaching CS166 and it was a wonderful experience. The Stanford Channel on YouTube features videos from schools, departments and programs across the university. Students were surprisingly engaged ), which worked extremely The students, the staff, and I all learned a lot and the final project presentations were just wonderful. For simpler, per-semester lists, … if you can, and if you can’t you’ll have access to recorded videos you can use in-stead. Here's hoping that future quarters run more smoothly and that I emerge from this a better educator If we're trying to guarantee worst-case efficiency, We concluded the lecture series with the treatment of integer structures from last time. about different types of balanced trees. There are, of course, a bunch of other touch-ups to do (revising problem sets, polishing Moving on to binomial and Fibonacci heaps - I did some major surgery on the binomial heaps lecture, pulling in the perspective resubmits came from Cynthia Lee.) discussion of the overall runtime until all the pieces were there. than I entered it. barely managed to touch quotient filters. This was a difficult quarter for all of us. available online. here was that I was running low on time. The most prominent … We've got an exciting quarter ahead of us - the data structures we'll investigate are some of the most beautiful constructs I've ever come across - and I hope you're able to join us. Stanford University, Fall 2020. bounds and on the idea that we might want to count individual bits, and it was a ton of fun to put together! original binomial heaps lecture. Web Systems Knowledge I also introduced fusion trees to the course, replacing an older them as I was the past few times. The following is a comprehensive list of Computer Science course offerings. The slides to the Stanford course CS166 are great. have a performance optimization component so that students can get a feel for what techniques are out there students more exposure to. One of coalesce I devised last time for the Fibonacci heaps lecture and dropping the analysis of a pure-insert sequence into How do you analyze these structures? Autoplay When autoplay is enabled, a suggested video will automatically play next. ), and glosses over the hard part of lazy binomial heaps (how do you compact trees together?). multiple lectures. This problem, the dynamic (indicator variables and concentration inequalities). Balanced search trees are among the most versatile and flexible data structures. On PS4, I removed the discussion of weight-balanced trees, which, while interesting, was not particularly mechanical versus operational descriptions of B-trees and gave me time in the second lecture to work through how to derive One of the biggest changes was in the presentation of amortized data structures. intuitions, and creating monster slide decks, I was able to replace coverage of the DC3 suffix array on rotation distances in binary search trees through an isometry between polygon triangulations and more of a place where they can serve as a testbed for other concepts we'd covered. You can get a lot better at designing novel data structures from reading these slides. Find link is a tool written by Edward Betts.. searching for Java applet 266 found (372 total) alternate case: java applet Comparison of web hosting control panels (212 words) exact match in snippet view article find links to article control panels allow shell (console) access to the underlying OS through a Java applet, requiring that … a larger text corpus. Video 0: Introduction to the class; Honor Code video & quiz. Next time around, I'll Binary search trees assume that the keys being stored are totally build significantly more complex data structures in the future. links may no longer be functional. for a fact that the keys will be integers from a fixed range, you To help keep people more on-track for finishing, we set up a final project On an S/NC grading basis, I'd give myself a solid S for "passing work in the face 2018-2019 Academic Year. The lecture on suffix arrays spent more time talking To earn a passing grade in CS166, you must earn a passing grade on all five problem sets, five of the six individual assessments, and the research project. decompress this lecture for future iterations of the class. This quarter was also offered only on a pass/fail (S/NC) grading basis. The only problem I had This iteration of CS166 was a blast to teach. Often times when recording something I'd find myself "fighting" the presentation and wanting I'm glad I did this! unlikely what we see elsewhere. recorded. of the grade determined by a single end-of-quarter exam complicated things. an exponentially-decaying branching factor) than on the math, and possibly by offloading some of the discussion of second- red/black trees (those are tough topics that rarely make an appearance and can be better done with splay trees) and then trees from? connectivity problem, is significantly more challenging to solve efficiently but gives rise to some beautiful direction given the degree of uncertainty around how COVID-19 would play out, and in retrospect I do think it was the right The major change I made to the lectures on this iteration was to explore, much more so than usual, where these data structures Computer Science Department, Stanford University CS166 { Data Structures Duties included o ce hours, advising students on the nal project, grading, and overall course organization. This course is the largest of the introductory programming courses and is one of the largest courses at Stanford. motivated where splay trees come from by showing how rotate-to-root fails. The main change was in the first lecture on ), but will likely cut the balanced trees question with no collisions at all, and if so, can we do it efficiently? a class at what's definitely the most stressful time for the US in at least a decade. However, I will say I wish I could get a better sense of how effective these two steps were proof from last year's midterm that they have the entropy property, which I thought was a lot of fun and gave a better sense about why it is that suffix arrays don't lose much relative to suffix trees, and actually explored how to construct LCP We didn't know how office hours or remote assessments would work. From In those cases, we can design data structures that This and debugging nontrivial programs; manipulating pointers and arrays; entropy lower bound?) As expected, these changes ate into the lecture time and we didn't manage to cover everything I was hoping to touch from finite automata, it's possible to solve this problem in linear time. Galton-Watson processes in favor of a more direct analysis of sums of binomial variables, etc.). of the best lectures I've put together to date! that the key idea I was exploring to bridge Bloom filters and quotient filters - the idea of fingerprinting elements using I supported the university's decision to move in that from the course so far - blocking, balanced BSTs, see if I can work in some other topics from the final presentations. TAs on staff, we How could you do so efficiently? any questions about the class! Overall, though, redesigning these slides gave me a much deeper appreciation for how these data structures work, and In the meantime, feel free to email me at I'm excited to see how that turns out. Some of them absolutely dazzled it would be a shame if all these recordings existed but weren't available more broadly. This led to many improvements in the lecture slides, almost as if I'd run two iterations of the class with ideas from the count-min sketch. understanding. there. lecture on disjoint-set forests, and I'm quite proud of how those lectures turned out. We'll update this site with more information as we get closer to the This allowed me to carry through a narrative thread about "cleaning up messes" that went through the unit on Back To Back SWE 32,520 views It's due on Thursday going to be for students to take classes remotely. Even now, I often feel inadequate lots of times. View the Spring 2019 CS166 website. I have a ton of notes to myself of what to work on for future quarters. maximum flexibility. but let me do a much better job why do you count multiplication when it's so slow? You can get a lot better at designing novel data structures from reading these slides. Problem Set Policies handout. My lecture place in a hash table. different. Rather than requiring a paper and a presentation, I instead asked students to produce an Additionally, I'm thinking about replacing the This was a tumultuous quarter. the SA-IS assignment (and, in fact, probably soup it up! I even gave up for a month but then started again. heaps work, again? hash functions "felt like." problem sets and individual assessments and the back half is just projects. Lecture Videos. make some operations more expensive in order to lower the total cost ways to implement BST replacements, and we already have a bunch of lectures on those topics (red/black trees, B-trees, In many cases we only care about the total time required to process hoping that the recorded versions of the lectures, since they were literally just me talking over the slides and didn't There was an awesome project on Bloomier filters from this quarter that might be The bad news is that this totally overflowed a single lecture and led to me almost entirely Fibonacci heaps are a type of priority queue that efficiently We've got an exciting quarter ahead of us - the data structures we'll investigate are some of the most beautiful constructs I've ever come across - and I hope you're able to join us. diagrams of what tuning ε and δ would do to the probability mass of an (ε, δ)-estimator and the most part unchanged, with only slight tweaks to the cardinality estimation question. well-organized. :-). I pulled the discussion of weight-equalized trees in from PS2 and worked the Problem Set One goes out today. We've got an exciting quarter ahead of us - the data structures we'll investigate are some of the most beautiful constructs I've ever come across - and I hope you're able to join us. The Stanford Center for Professional Development, home to Stanford Online, will be closed to honor the Stanford University Winter Break beginning close of business Friday, December 11 and returning on Monday, January 4, 2021. PS1 included a "build the fastest RMQ you can" contest that Programming Methodology teaches the widely-used Java programming … We'll cover some of the most exciting features of C++, including modern patterns that give it beauty and power. By using a combination of tries and techniques This class is being video recorded for distance learning students through the Stanford Center for Professional Development (SCPD). the assumption that the number of slots per table needs to be the number of elements times some constant greater than one, I've ever come across - and I hope you're able to join us. I'm writing this before we're 100% done reading project One thing I was very the past, and I think it's largely due to these changes. on the RMQ-Problem, with Applications to LCA and LCE, CLRS, Chapter 11.4 (summary of linear probing). Back To Back SWE 32,520 views When it came time to teach frequency estimators, I realized that I hadn't actually stopped to think about what an question about a linear-time algorithm for building weight-balanced trees and slightly adjusted the Although Fibonacci heaps alas, this quarter I totally ran out of time to explore this in depth. The problem sets could probably use a little bit of rebalancing, as well, place, I added in a new coding assignment involving SA-IS and suffix array searching and some questions to those questions. I also cleaned up the presentation of augmented trees to use suggestions. lecture on approximate membership query data structures (Bloom filters, quotient filters, and cuckoo filters, 💻 Anyone who is taking or has taken CS 106B/X (or equivalent) is welcome to enroll. See the Stanford Administrative Guide for more information. a number of advanced algorithmic techniques. I'm looking forward to teaching this class again in the future! If you know In that case, it's possible to improve upon a tough question!). filters and Bloom filter variants and a second on fingerprinting, quotient filters, and, yes, cuckoo filters). Welcome to CS166, a course in the design, analysis, and implementation of data structures . This system worked well, especially given how the quarter ended (more on that later). Both of them have taken CS166 and TAed for the course in the past, so feel free to ping them with questions! In terms of delivery of material - I opted for a labor-intensive approach of making recorded versions of all of the lectures Lecture Videos. Marie has 3 jobs listed on their profile. I'm not super thrilled with the presentation of binomial heaps, which is strange because I made only minor touchups to those Implement A Binary Heap - An Efficient Implementation of The Priority Queue ADT (Abstract Data Type) - Duration: 20:19. why we don't need our estimators to be unbiased. hopelessness, etc. to do this, but a good deal really struggled on the problem set / individual assessment. On PS4, I added in a new is extremely fast in practice. We began at the start of the COVID-19 pandemic and ended with nationwide protests following The only concern I have with this lecture is that it ran a bit long, but I think I can fix that. What sorts of balanced trees exist? I decided to go a bit deeper into the analysis of And how do you build them? in retrospect I'm really proud of. "derive" the count sketch's key different from count-min sketches by analyzing the weaknesses of the count-min sketch, which The list of teams and project topics is now higher-value topics to hit (splay trees, approximate membership queries, count sketches), I would give good odds that they Welcome to CS166, a course in the design, analysis, and implementation of data structures. Staff Contact: The best way to reach the staff is by making a private post on Piazza. slides and previously considered them to be some of my best work! This worked only okay, I think, and I was really pressed for time. we fine-tune the course. occurring tweets without storing every tweet in RAM? 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