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Hi! I'm Derrick Coetzee, an administrator on the English Wikipedia and Wikimedia Commons ([[commons:User:Dcoetzee|Wikimedia Commons user page]]), and a user since June 2003. I'm a graduate student in computer science at the University of California, Berkeley in the United States ([http://www.cs.berkeley.edu/~dcoetzee/ student homepage]) and an amateur photographer ([http://www.flickr.com/photos/dcoetzee/ Flickr homepage]). On the English Wikipedia, I mainly contribute content to articles about computer science and mathematics, add images to articles, deal with image copyright issues, and discuss policy. For more about me, see [http://moonflare.com/ my homepage].

I am [[agender]] (without gender) but you may refer to me using any pronouns that you wish.

Please feel free to [[User talk:Dcoetzee|leave a message on my talk page]] or [[Special:Emailuser/Dcoetzee|e-mail me]] if there's anything I can help you with, or if you just want to chat. If you want to talk on IM, just e-mail me and ask for my contact information. If you have a very private message, please encrypt it using my <span class="plainlinks">[https://en.wikipedia.org/w/index.php?title=User:Dcoetzee/PGP_public_key&oldid=486919223 PGP public key]</span>.

I am a member of [[Wikipedia:WikiProject Mathematics|WikiProject Mathematics]], [[Wikipedia:WikiProject Computing|WikiProject Computing]], and [[Wikipedia:WikiProject Computer science|WikiProject Computer science]]. When I'm on IRC I'm usually on #wikipedia, #wikipedia-en, #wikipedia-en-admins, #wikipedia-en-help, and #wikimedia-commons and my IRC nick is ''Dcoetzee''.

In Spring 2010 I was a Campus Ambassador for [[Wikipedia:WikiProject United States Public Policy/Courses/Environmental Policy spring 2011 (Gen)|an environmental policy class at San Francisco State University]]. In Fall 2010, along with [[User:Mattsenate]], I was a Wikipedia Regional co-Ambassador for Northern California. In Spring 2012, I was Campus Ambassador for [[Wikipedia:United_States_Education_Program/Courses/Environmental_Law_(Aaron_Frank)|an environmental law class at University of San Francisco]].




__TOC__

I've contributed a significant amount of content to each of the articles listed in the ''Articles'' section below; not all articles I've edited significantly are listed, see my [[Special:Contributions/Dcoetzee|user contributions]] for more. I've created diagrams and taken photos for several pages, although most of my image work these days is on [http://commons.wikimedia.org Wikimedia Commons], where I've also done a lot of image cleanup work (see [[:Commons:User:Dcoetzee|my user page there]]). I've also done extensive disambiguation, page moving, link fixing, editing for wording and clarity, RC and new page patrol, fact checking, adding redirects, and many other minor editing tasks &mdash; most of my work is not reflected on this page.

To summarize my Wikipedia philosophy: I try to be moderate and give thought to each issue that arises, not consigning myself to labels, but in general I would call myself a tolerant inclusionist. I follow the spirit of the rules but not always their letter; the most important rules to me are [[Wikipedia:Don't bite the newbies|don't bite the newbies]] and "assume ignorance, not malice", because editors are our lifeblood. I tend to prefer normal editing work to administravia despite my status, and I believe the most important contributions are the addition of new raw text and ideas to articles, however unpolished it is. None of this is to say that I don't become very frustrated on occasion; when I feel that I'm losing objectivity, I try to withdraw.

== License of my work ==

Although all Wikipedia contributors release their work under the Creative Commons Attribution Share-Alike license, I additionally waive all rights to all my contributions to any namespace under the [http://creativecommons.org/publicdomain/zero/1.0/ Creative Commons Zero waiver 1.0] (CC0 1.0). Thus any content written solely by myself (not edited significantly by others) can be used without any form of attribution, and derivative works need not be freely licensed; this applies to contributions to any page including articles, discussion pages, and project pages. I make no license statement regarding images or contributions on other wikis here.

== Links ==

* [http://en.wikipedia.org/w/index.php?title=Special:RecentChangesLinked&days=30&target=Category%3ACode_block_templates Recent changes to code blocks]
* [[Special:Contributions/HorseGirl070605|User:HorseGirl070605]]: [[Wikipedia:Administrators'_noticeboard/IncidentArchive513#User:HorseGirl070605|ANI thread]], [[Special:Contributions/71.68.223.17|IP contributions]]
* [[Special:Contributions/Mgreason]]
* [http://en.wikipedia.org/w/index.php?limit=250&tagfilter=&title=Special%3AContributions&contribs=user&target=Allstarecho&namespace=0&tagfilter=&year=&month=-1 Allstarecho edits]

== Todo ==

* [[Index_(database)]] - Add info on structure and implementation
* [[Quantified Boolean formula problem]] - Do merge
* [[Shortest path problem]] - Diagrams for the various algorithms
* Read the STM book and expand [[Software transactional memory]] and create subarticles
* [[Bloom filter]] - fix description of Bloomier filter insertion
* Expand [[Schonhage-Strassen algorithm]] with example
* Expand [[Bitonic sorter]]
* Diagram for [[Threaded binary tree]]
* Write [[Funnelsort]], [[Funnel (data structure)]], and other cache-oblivious related stuff
* Photograph [[User:Dcoetzee/People in my building with Wikipedia articles|people in my building with Wikipedia articles]]
* [[Wikipedia:Requested articles/Applied arts and sciences/Computer science, computing, and Internet]]
* [[Computational complexity theory]]: cover current research
** approximation
** quantum complexity
** communication complexity
** computational learning theory
* [[Delta debugging]]
* [[Elastic code]]
* [[Deep learning]]

== Essays ==

These are essays I've written on various topics related to Wikipedia.

* [[User:Dcoetzee/Named topic bias]]
* [[User:Dcoetzee/Why wikithreads are bad]]
* [[User:Dcoetzee/Speakers per articles on Wikipedia]]
* [[User:Dcoetzee/Internet users by language per article on Wikipedia]]
* [[User:Dcoetzee/The value of recentism]]

== On other wikis ==

* [[:Commons:User:Dcoetzee]]
* ''See rest in interwiki links on left''

== Articles ==

=== Compilers ===

* [[Compiler optimization]]
* [[Instruction scheduling]]
* [[Static single assignment form]]
* [[Rematerialization]]
* [[Definite assignment analysis]]

=== Data structures ===

* [[Array]]
* [[Associative array]]
* [[Bit array]]
* [[Bloom filter]] (''Space and time advantages'', ''Bloomier filters'' sections)
* [[CDR coding]]
* [[Dynamic array]]
* [[Disjoint-set data structure]]
* [[Euclidean minimum spanning tree]]
* [[Fusion tree]]
* [[Linked list]] (>70%)
* [[Parallel array]]
* [[Pointer (computer programming)|Pointer]]
* [[Red-black tree]] (almost all)
* [[Self-balancing binary search tree]]
* [[Tagged union]]
* [[Trie]]
* [[Union (computer science)]]
* [[Unrolled linked list]]
* [[van Emde Boas tree]]
* [[VList]]

=== Algorithms ===

* [[Binary GCD algorithm]]
* [[Comparison sort]]
* [[Find first set]]
* [[Matrix chain multiplication]]
* [[DSW algorithm]]
* [[Dynamic programming]] (50% + images)
* [[Output-sensitive algorithm]]
* [[Planarity testing]]
* [[Prosthaphaeresis]]
* [[Rabin-Karp string search algorithm]] (50%, example and pseudocode and much explanation)
* [[Schönhage–Strassen algorithm]] (added extensive details)
* [[Selection algorithm]]
* [[Spreadsort]]
* [[Lucas–Lehmer primality test]] (examples, lots of additional details)
* [[Toom-Cook multiplication]] (Details, Interpolation matrices)

=== Complexity ===

* [[SL (complexity)]]
* [[RL (complexity)]]
* [[RLP (complexity)]]
* [[Finite model theory]]
* [[Complement (complexity)]]
* [[Interactive proof system]] (maybe 90%)
* [[Graph isomorphism problem]]
* [[IP (complexity)]]
* [[Zero-knowledge proof]] (''History and results'', ''References'')
* [[Quantified boolean formula problem]]
* [[Low (complexity)]]
* [[FNP (complexity)]]
* [[Karp's 21 NP-complete problems]]
* [[Set packing]]
* [[Feedback arc set]]
* [[Space hierarchy theorem]]
* [[Parity-P]]
* [[Primality certificate]]
* [[PTAS reduction]]
* [[Sparse language]]
* [[Unary language]]
* [[BPL (complexity)]]
* [[SC (complexity)]]

=== Other computer science topics ===

* [[ANSI art]] (50% or so + image)
* [[Bernard Chazelle]]
* [[Color quantization]]
* [[Concolic testing]]
* [[COM file]]
* [[C (programming language)|C programming language]] (''Features'', ''Problems with C'')
* [[Directed acyclic graph]] (50% or so)
* [[Garbage collection (computer science)]] (''Disadvantages of Tracing Garbage Collectors'' section)
* [[George Necula]]
* [[Interactive Disassembler]]
* [[Iterated logarithm]]
* [[Key disclosure law]]
* [[Levenshtein distance]]
* [[Lookahead]]
* [[Lookup table]] (''Examples'')
* [[Pitch contour]]
* [[Pixelation]]
* [[Pointer swizzling]]
* [[Powerset construction]]
* [[Prepared statement]]
* [[Ranking function]]
* [[Reference counting]]
* [[Region-based memory management]]
* [[Saturation arithmetic]]
* [[Software transactional memory]]
* [[Two-way deterministic finite automaton]]
* [[Three-way comparison]]
* [[Vaughn Pratt]]
* [[Rico Malvar]]

=== Topology ===

* [[Base (topology)]]
* [[Continuity (topology)]]
* [[Trivial topology]]

=== Other math ===

* [[Abel's irreducibility theorem]]
* [[Absolute difference]]
* [[Bimodal distribution]]
* [[Cantor's intersection theorem]]
* [[Complete sequence]]
* [[Connected component]]
* [[Matroid]] (weighted matroids and greedy algorithms, proofs of examples' properties, references/most of history)
* [[Nicholas Mercator]]
* [[Skew line]]

=== Entertainment ===

* [[Rupee (Legend of Zelda)]]
* [[Vespene gas]]
* [[The Pirates of Dark Water]]
* [[Captain Planet and the Planeteers]] (80%)
* [[Hey Sandy]]
* [[The Littl' Bits]]

=== Horses ===

* [[Glycogen Branching Enzyme Deficiency]]
* [[Hyperkalemic Periodic Paralysis]] (all but intro)
* [[Impressive (horse)]]
* [[Lethal white syndrome]]

=== Other ===

* [[Alphonse Bertillion]]
* [[Georgia Institute of Technology]] (>50%)
* [[Howard Allen]]
* [[List of occasions known by their dates]]
* [[Personally identifiable information]]
* [[Registered trademark symbol]]
* [[Saria Island]]
* [[Stop sign]] (most)
* [[SM-64 Navaho]] (intro and link)
* [[Service mark symbol]]
* [[Thomas Hawker]]
* [[Trademark symbol]]
* [[Thomas Holloway (painter)]]
* [[Explosive dehiscence]]
* [[Grenada North]]

== Images ==

''See also [[commons:User:Dcoetzee|my Commons page]].''

=== Music samples ===

* [[:Image:U2 - I Still Haven't Found What I'm Looking For.ogg]]
* [[:Image:Genesis - Invisible Touch.ogg]]
* [[:Image:U2 - With or Without You.ogg]]
* [[:Image:Belinda Carlisle - Heaven Is a Place on Earth.ogg]]
* [[:Image:Chicago - Look Away.ogg]]
* [[:Image:Richard Marx - Hold On to the Nights.ogg]]
* [[:Image:Rick Astley - Never Gonna Give You Up.ogg]]
* [[:Image:Exposé - Seasons Change (sample).ogg]]

{{User committed identity|d2561dfae82ff2ad057f73566e27e9f84500c9c266c4be86a510feab94283c34265182e46d8d77ca362663254c1873e775c506744c4983ce0f576b6c1056572e|SHA-512|background=#FC9|border=#000}}

[[Category:Wikipedians who have access to a university library]]
[[Category:Wikipedians who have access to JSTOR]]

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Latest revision as of 19:51, 3 April 2024