User:Dcoetzee
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Hi! I'm Derrick Coetzee, an American software developer carrying a masters in computer science and bachelor degrees in computer science and mathematics. In addition to my primary background I also have some experience with graphical design, photography, and writing, so I wanted to get involved with this project in order to help all the people out there who need the info, to help fix nasty pages so that Wikipedia's name is not degraded, and for minor bragging rights. Since I joined Wikipedia in 2003 I've found working on articles strangely addicting, and hope to continue to do so, if sparingly, for a long time.
I've contributed a significant amount of content to each of the articles listed in the Articles section below. I'm the original creator and primary proponent behind the failed proposal for a standard Wikipedia pseudocode, wikicode, now archived at User:Dcoetzee/Wikicode. I am also an administrator on the English Wikipedia, and am happy to help in any tasks requiring admins.
I have created diagrams and taken photos for several pages that I felt desperately needed them, as listed in the Images section, and done a great deal of image cleanup work on Wikimedia Commons (my user 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 — most of my work is not reflected on this page. I am a member of WikiProject Mathematics and WikiProject Computing.
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 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.
Please feel free to contact me (by talk or e-mail) with any requests or comments, or if you need help from an admin. On IRC I'm often on #wikipedia, #wikimedia-social, #wikipedia-en, #wikipedia-en-admins, #wikimedia-commons, and #vandalism-en-wp and my IRC nick is Dcoetzee.
Derrick Coetzee
Contents |
[edit] License of my work
(made more liberal on 2007/2/21)
Informally, all article changes are public domain, all others aren't.
I, Derrick Coetzee, irrevocably release all rights to my text contributions to any main namespace article, granting them into the public domain where this is legally possible. However, I retain ownership under the GFDL of all other changes, including any change to any project page, talk page, or user page. I make no license statement regarding images or contributions on other wikis here.
[edit] Essays
These are essays I've written on various topics related to Wikipedia.
- User:Deco/Named topic bias
- User:Deco/Why wikithreads are bad
- User:Deco/Speakers per articles on Wikipedia
[edit] On other wikis
- Commons:User:Dcoetzee
- See rest in interwiki links on left
[edit] Articles
[edit] Compilers
[edit] 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
- Red-black tree (almost all)
- Self-balancing binary search tree
- Tagged union
- Trie
- Union (computer science)
- Unrolled linked list
- van Emde Boas tree
- VList
[edit] Algorithms
- Binary GCD algorithm
- Comparison sort
- Matrix chain multiplication
- DSW algorithm
- Dynamic programming (50% + images)
- Prosthaphaeresis
- Rabin-Karp string search algorithm (50%, example and pseudocode and much explanation)
- Selection algorithm
- Spreadsort
[edit] 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
[edit] Other computer science topics
- ANSI art (50% or so + image)
- Bernard Chazelle
- Color quantization
- COM file
- C programming language (Features, Problems with C)
- Directed acyclic graph (50% or so)
- Garbage collection (computer science) (Disadvantages of Tracing Garbage Collectors section)
- Interactive Disassembler
- Iterated logarithm
- Levenshtein distance
- Lookahead
- Lookup table (Examples)
- Pitch contour
- Pixelation
- Pointer swizzling
- Powerset construction
- Reference counting
- Saturation arithmetic
- Software transactional memory
- Two-way deterministic finite automaton
- Vaughn Pratt
[edit] Topology
[edit] Other math
- Bimodal distribution
- Connected component
- Matroid (weighted matroids and greedy algorithms, proofs of examples' properties, references/most of history)
- Nicholas Mercator
- Skew line
[edit] Entertainment
- Rupee (Legend of Zelda)
- Vespene gas
- The Pirates of Dark Water
- Captain Planet and the Planeteers (80%)
- Hey Sandy
- The Littl' Bits
[edit] Horses
- Glycogen Branching Enzyme Deficiency
- Hyperkalemic Periodic Paralysis (all but intro)
- Impressive (horse)
- Lethal white syndrome
[edit] Murderers
[edit] Other
- Alphonse Bertillion
- Georgia Institute of Technology (>50%)
- Personally identifiable information
- Saria Island
- Stop sign (most)
- SM-64 Navaho (intro and link)
[edit] Images
See also my Commons page.
[edit] Created by me
[edit] Diagrams
- A multidimensional array stored as an array of arrays
- Binary search tree
- Binary tree (more "random" than BST)
- Diagram showing topology definition of continuity
- Diagram of a directed acyclic graph
- A non-simple directed cycle graph
- Diagram of a proof that the Euclidean minimum spanning tree is contained in the Delaunay triangulation
- Diagram demonstrating overlapping subproblems in Fibonacci sequence, for dynamic programming page
- Iterated logarithm diagram
- n-ary to binary tree conversion: based strongly on the previous textual version
- Red-black tree example
- Red-black tree node insertion case 3 diagram
- Red-black tree node insertion case 4 diagram
- Red-black tree node insertion case 5 diagram
- Red-black tree node deletion case 2 diagram
- Red-black tree node deletion case 3 diagram
- Red-black tree node deletion case 4 diagram
- Red-black tree node deletion case 5 diagram
- Red-black tree node deletion case 6 diagram
- Singly linked list
- SSA example 1 figure 1
- SSA example 1 figure 2
- SSA example 1 figure 3
- Tagged union tree: Tree type expressed as a tagged union diagram
- Trie example: Trie, not tree
- VList
- Strait: like the water channel kind
- Parabola only: Just a parabola, no decorations
- Impossible objects: Diagrams of popular impossible objects
- Penrose triangle: A piece of Image:Impossible objects.png, for a more specific article
- Georgia Tech Student Center Sidewalk: took this photo at school
- Zelda rupees: Pictures of rupees from two Legend of Zelda games
- A complete binary tree stored in an array
- Image:Insertionsort-before.png
- Image:Insertionsort-after.png
- Image:Aargau_flag.png Flag of Aargau canton in Switzerland
- Image:Binary search tree delete.png
- Image:Doubly linked list insert after.png
- Image:Singly linked list delete after.png
- Image:Singly linked list insert after.png
- Image:Network effect.png
[edit] Photos
- Atlanta from Smyrna
- The annual Duluth Fall Festival (actually my mom took this one)
- Memorial plaque to Favero family, victims of a particular plane crash
- Image:Cadiz courthouse with sign.jpg
- Image:Wright City water tower.jpg
- Image:GeorgiaTechStudentCenterSidewalk.jpg
[edit] Not created but uploaded by me
- David and Goliath: public domain
- Napoleon on Horse: public domain
- Yellow stop sign: obtained permission from photographer
- Pademelon: obtained permission from photographer
- John Sayles: obtained permission from photographer
- Robert Stone: obtained permission from photographer
- John Waters: obtained permission from photographer
- Allen Ginsberg: obtained permission from photographer
- Carl Hiaasen: obtained permission from photographer
- Barbara Ehrenreich: obtained permission from photographer
- Joan Didion: obtained permission from photographer
- James Ellroy: obtained permission from photographer
- Martin Amis: obtained permission from photographer
- Studs Terkel: obtained permission from photographer
- Simon Schama: obtained permission from photographer
- Umberto Eco: obtained permission from photographer
- An EMST genenerated by Leda: Obtained permission from Leda people
[edit] Edited by me
- Bat'leth: removed contrasting background, shadow
- Chonnaq: removed contrasting background
- Klemheist Knot: removed horribly contrasting background
- Triforce: removed contrasting backgrounden:User:Dcoetzeetlh:User:Dcoetzee
