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The British APL Association (BAA) was founded 40 years ago to promote a the APL family of interactive array-programming languages derived from [[Ken Iverson]]’s [[mathematical notation|Iverson notation]].
[[File:BAA.png|thumb|right|Logo of the BAA.]]
The '''British APL Association''' ('''BAA'''; infrequently '''BAPLA''') is a [[user group]] founded in 1984 in England to promote APL, and the publisher of Vector journal. It is funded by its sustaining members, which include corporate users and the APL [[vendors]] [[APL2000]], [[Dyalog Ltd.]], [[Kx Systems]], and MicroAPL.


As a group, it organises regular events around the UK and encourages participation from as many people as possible. The BAA London group meets once per month (in London) and all are welcome to come along and join in.
The BAA was a Specialist Group of the [[wikipedia:British Computer Society|British Computer Society]] from its early years (possibly beginning after [[APL86]]<ref>Anthony Camacho. [http://archive.vector.org.uk/art10500330 "BAA Annual General Meeting 2010"]. Vector journal volume 24 issue 4. 2010-12.</ref>) until it left in response to increasing requirements made by the BCS in 2008.<ref>Paul Grosvenor. [http://archive.vector.org.uk/art10011900 "Changes at the BAA" (pdf)]. Vector journal volume 23 issue 4. 2008-09.</ref>
 
== Activities ==
 
[[File:Vector journal.png|thumb|right|Logo of the Vector journal.]]
=== Vector journal ===
Vector, the journal of the BAA, began publication in 1984, and gradually took the place of [[APL Quote Quad]] as the de-facto leading publishing channel for APL content. The journal featured submitted articles on array programming including [[J]] and [[K]], as well as news from APL and other array language vendors. Beginning in 2005, with volume 21 issue 4, the journal was issued online as well as in print, and some prior articles have also been made available online.<ref>Stephen Taylor. [http://archive.vector.org.uk/art10009870 "Editorial: Discover, Learn, Profit"]. Vector journal volume 21 issue 4. 2005-09.</ref> It was published quarterly until 2004, when late and sometimes skipped issues began to interrupt its formerly regular schedule. Releases slowed more significantly after 2008, and in 2016, following the completion of volume 26, the journal moved entirely to online publishing. So far a single issue has been published this way, in 2019.
 
=== Regular meetings ===
==== Symposium ====
From 2008 and until the onset of the [[wikipedia:COVID-19 pandemic|COVID-19 pandemic]], the BAA London group arranged a monthly open-for-all meet-up, called ''the symposium'', at the The Hoop and Grapes pub on Farringdon Street in London. No sign-up was required.
 
==== Webinar ====
{{Main|BAA Webinar}}
BAA began a series of [[Wikipedia:webcast|webcast]]s in 2020. Initially oriented around a presentation on a particular topic, most meetings are now open sessions without any planned topic. Participants are still encouraged to present or raise any subject, and can request in advance that an episode is set aside for such.
 
The events are held at 16:00 UK time, every other Thursday on even-numbered [[wikipedia:ISO week|ISO week]]s. The current week number can easily be determined using Dyalog APL: <syntaxhighlight lang=apl inline>⍬2⊃¯11⎕DT'Z'</syntaxhighlight> gives <code>{{CURRENTWEEK}}</code> this week.
 
BAA webinars are held using [[wikipedia:Zoom (software)|Zoom]]:
 
* '''Meeting ID:''' [https://zoom.us/j/858532665 858 532 665]
* '''Passcode:''' The result of [https://tryapl.org/?clear&q=%C3%97%2F1920%2012%2017&run <syntaxhighlight lang=apl inline>×/1920 12 17</syntaxhighlight> evaluated as APL]
 
=== Individual events ===
 
==== Conferences ====
'''APL-ication''' was held 28th-30th September 1988 at the [[wikipedia:University of Kent|University of Kent]].<ref>BAA. "APL-ication Conference Proceedings". 1988.</ref>
 
The two-day conference '''BAPLA 09''' was held on June 8th & 9th 2009 at DeVere Hotel, Wokefield Park, near Reading, UK.
 
==== Iverson Centenary ====
On 17 December 2020, a special webinar was arranged to celebrate the 100th anniversary of the birth of [[Ken Iverson]]. Around 200 attendees from around the world attended as the panel consisting of [[Roger Hui]], Leslie Goldsmith, Rebecca Kelly (of KX), Devon McCormick, [[Morten Kromberg]], Simon Garland, and Stephen Taylor reflected on their experiences of working with and learning from Iverson. The legacy of [[Iverson Notation]] for APL, [[J]], [[Q]] and [[Family_tree_of_array_languages|other languages]] was discussed, together with the future of Iversonian notations.<ref>BAA Editor. [https://britishaplassociation.org/iverson-centenary-december-2020/ Iverson Centenary – 17 December 2020]. Jul 14, 2021.</ref>
 
[[File:APL logo.png|thumb|right|The logo adopted through BAA's efforts.]]
=== APL logo ===
{{Main|APL logo}}
After a consensus at the September 9th 2021 webinar, BAA headed an effort to adopt a universal vendor-agnostic logo for APL. This work concluded at the 2022-05-19 webinar.
 
== Organisation ==


The BAA is administered by a committee of officers elected by ballot of Association members at the Annual General Meeting. Working groups are also established in areas such as activity planning and journal production. Offers of assistance and involvement with any Association matters are always welcomed.
The BAA is administered by a committee of officers elected by ballot of Association members at the Annual General Meeting. Working groups are also established in areas such as activity planning and journal production. Offers of assistance and involvement with any Association matters are always welcomed.
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The current chairman is Paul Grosvenor.
The current chairman is Paul Grosvenor.


=== BAPLA 09 ===
== External links ==
 
* [https://britishaplassociation.org/ BAA Website]


The British APL Association held a 2-day conference, '''BAPLA 09''', on June 8th & 9th 2009 at DeVere Hotel, Wokefield Park, near Reading, UK
* [https://groups.google.com/forum/#!forum/baa-london BAA London Google Group] announces upcoming symposiums and other events.


== External links ==
* [https://vector.org.uk/ ''Vector'', The BAA's Journal]


[https://britishaplassociation.org/ BAA Website]
* [http://archive.vector.org.uk/ The ''Vector'' archives] are significant and relevant for understanding APL and related languages today


==References==
<references/>
{{APL community}}
{{APL community}}
[[Category:User groups]]
[[Category:User groups]]
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