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[[File:Roger.jpg|thumb|right|At [[Dyalog '18]]]]
'''Roger Kwok Wah Hui''' (born 1953) is a computer scientist and co-developer of the programming language [[J]], and later [[Dyalog APL]].
'''Roger Kwok Wah Hui''' (born 1953) is a computer scientist and co-developer of the programming language [[J]], and later [[Dyalog APL]].


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Roger Hui runs and maintains the Jsoftware website.
Roger Hui runs and maintains the Jsoftware website.
== Publications ==
=== APL conferences ===
* [[APL85]]: Design: a financial modelling system. With Fred Appleyard.
* [[APL87]]: [https://www.jsoftware.com/papers/from.htm Some uses of { and }].
* [[APL90]]: [https://www.jsoftware.com/papers/J1990.htm APL\?]. With [[Ken Iverson|Kenneth E. Iverson]], [[Eugene McDonnell|E. E. McDonnell]], and [[Arthur Whitney|Arthur T. Whitney]].
* [[APL91]]: Gerunds and representations. With [[Bob Bernecky|Robert Bernecky]].
* [[APL91]]: [https://www.jsoftware.com/papers/TacitDefn.htm Tacit definition]. With [[Ken Iverson|Kenneth E. Iverson]] and [[Eugene McDonnell|Eugene E. McDonnell]].
* [[APL94]]: TAGS: trains, agendas, and gerunds. With [[Ken Iverson|Kenneth E. Iverson]].
* [[APL95]]: [https://www.jsoftware.com/papers/rank.htm Rank and uniformity].
* [[APL95]]: Representations of recursion. With [[Ken Iverson|Kenneth E. Iverson]].
* [[APL97]]: Mathematical roots of J. With [[Ken Iverson|Kenneth E. Iverson]].
* [[APL99]]: [https://www.jsoftware.com/papers/sparse.htm Sparse arrays in J].
=== Dyalog user meetings ===
* [[Dyalog '08]] 05: [https://dyalog.tv/Dyalog08/?v=k8Wt5sDDzgI Performance Improvements in Dyalog: A Case Study] ([https://www.dyalog.com/uploads/conference/dyalog08/presentations/05_Hui_Performance materials])
* [[Dyalog '09]] 15: Complex Numbers Implementation Stories ([https://www.dyalog.com/uploads/conference/dyalog09/presentations/15_Hui_ComplexNumbers.ZIP materials])
*  Dyalog '09  26: [https://dyalog.tv/Dyalog09/?v=ui76NE5cMWo The Rank Operator] ([https://www.dyalog.com/uploads/conference/dyalog09/presentations/26_Hui_RankOperator.ZIP materials])
* [[Dyalog '10]] P07: Hashing for Tolerant Index-Of ([https://www.dyalog.com/uploads/conference/dyalog10/presentations/P07_Hui_Hashing.htm materials])
* [[Dyalog '11]] D04: Introducing the Dyalog '11 Conference Edition (with [[John Scholes]])
*  Dyalog '11  D05: [https://dyalog.tv/Dyalog11/?v=CkaQQYcxpfM Rational Numbers] ([https://www.dyalog.com/uploads/conference/dyalog11/presentations/D05_rational_numbers materials])
*  Dyalog '11  D18: [https://dyalog.tv/Dyalog11/?v=bQlH49krwbk What is Functional Programming?] (with [[John Scholes]])
* [[Dyalog '12]] D04: [https://dyalog.tv/Dyalog12/?v=KrrHYjPXc84 Potential Version 14.0 Language Features] ([https://www.dyalog.com/uploads/conference/dyalog12/presentations/D04_14.0 materials]) (with [[John Scholes]])
*  Dyalog '12  D08: Dyalog APL Benchmarks and Performance Enhancements ([https://www.dyalog.com/uploads/conference/dyalog12/presentations/D08_Performance materials])
* [[Dyalog '13]] D08: [https://dyalog.tv/Dyalog13/?v=J05FEbqDsZM Rank and Friends] ([https://www.dyalog.com/uploads/conference/dyalog13/presentations/D08_Rank_and_Friends materials])
*  Dyalog '13  D11: [https://dyalog.tv/Dyalog13/?v=84t87EO5ZEE Primitive Performance] ([https://www.dyalog.com/uploads/conference/dyalog13/presentations/D11_Primitive_Performance.pps slides], [https://www.dyalog.com/uploads/conference/dyalog13/presentations/D11_Primitive_Performance materials]) (with [[Morten Kromberg]])
* [[Dyalog '14]] D06: [https://dyalog.tv/Dyalog14/?v=7GDya-E3pxI The Tuning Pipeline] ([https://www.dyalog.com/uploads/conference/dyalog14/presentations/D06_Tuning_Pipeline materials]) (with Kimmo Kekäläinen)
* [[Dyalog '15]] D04: [https://dyalog.tv/Dyalog15/?v=AJzY4DgUVws Core Performance] ([https://www.dyalog.com/uploads/conference/dyalog15/presentations/D04_Core_Performance_Foad.pdf slides_JF], [https://www.dyalog.com/uploads/conference/dyalog15/presentations/D04_Core_Performance_Hui.zip materials_RH]) (with [[Jay Foad]])
*  Dyalog '15  D16: [https://dyalog.tv/Dyalog15/?v=9KOto3xXS3c Future Operator Proposals: Cut, Under, Merge] ([https://www.dyalog.com/uploads/conference/dyalog15/presentations/D16_Future_Operator_Proposals.zip materials]) (with [[John Scholes]])
* [[Dyalog '16]] D06: [https://dyalog.tv/Dyalog16/?v=vms4_Fpqmv8 New Primitive Functions and Operators] ([https://www.dyalog.com/uploads/conference/dyalog16/presentations/D06_New_Primitives_RH.zip materials], [https://www.dyalog.com/uploads/conference/dyalog16/presentations/D06_New_Primitives_JS.txt demo script]) (with [[John Scholes]])
*  Dyalog '16  D08: [https://dyalog.tv/Dyalog16/?v=2AeONlTj1aY Performance: The Neverending Story] ([https://www.dyalog.com/uploads/conference/dyalog16/presentations/D08_Performance_JF.pdf slides_JF], [https://www.dyalog.com/uploads/conference/dyalog16/presentations/D08_Performance_RH.zip slides_RH]) (with [[Jay Foad]])
* [[Dyalog '17]] D07: [https://dyalog.tv/Dyalog17/?v=69ncBGN3YiI Index-Of on Multiple Floats] ([https://www.dyalog.com/uploads/conference/dyalog17/presentations/D07_IndexOf_on_Multiple_Floats.zip materials])
*  Dyalog '17  D10: [https://dyalog.tv/Dyalog17/?v=fPWky9IOG40 Tolerant Unique] ([https://www.dyalog.com/uploads/conference/dyalog17/presentations/D10_Tolerant_Unique.zip materials])
*  Dyalog '17  D15: TAO – Total Array Ordering ([https://www.dyalog.com/uploads/conference/dyalog17/presentations/D15_TAO_of_Dyalog.zip materials]) (with [[John Scholes]])
* [[Dyalog '18]] D14: [https://dyalog.tv/Dyalog18/?v=IOWDkqKbMwk Inverted Tables] ([https://www.dyalog.com/uploads/conference/dyalog18/presentations/D14_Inverted_Tables.zip slides])
=== Other talks ===
* Functional Conf 2017: [https://www.youtube.com/watch?v=EJONZpNA81s Tests, Derivations, Proofs]


== External links ==
== External links ==
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* [https://www.jsoftware.com/ Jsoftware website]
* [https://www.jsoftware.com/ Jsoftware website]


{{APL community}}[[Category:People|Hui]]
{{APL community}}{{DEFAULTSORT:Hui}}[[Category:People]][[Category:Jsoftware employees]][[Category:Dyalog Ltd. employees]][[Category:I.P. Sharp Associates employees]][[Category:Designers]][[Category:Executives]][[Category:Implementers]]
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