minutes of the meeting 2023-09-06

content/minutes/2023-09-06.md

@@ -0,0 +1,54 @@
+---
+title: "33rd regular meeting"
+date: 2023-09-06
+--- 
+
+5 ppl attending
+
+
+# open exchange
+
+## EAA
+- happened.
+- very full conference, great fun for those attending
+- two sessions interesting to computational archaeology, we would like to hear more about:
+
+### archaeoriddle
+- we would like to invite Simon and Alfredo (Cambridge) to talk about it at CAA
+
+### code sustainability workshop
+- by Dries Draems
+- gave a shoutout to computational world map
+- sadly he couldn't talk, so hopefully he can tell us more next time
+
+
+## recursive programming in R and infinite sequences
+- Clemens recommends a blogpost:  https://jcarroll.com.au/2023/08/18/taking-from-infinite-sequences
+- Clemens example:
+    - using Haskell and repl as an interactive compiler
+    - you can ask for an infinite number and it just starts counting
+    - can be nice for indexing -> give a list concrete indices
+    - we don't have to count anymore, how many indices we need, we can just ask it to stop when our list is done being indexed
+    - manipulation of infinite lists can't be done in every language -> but you can do that in Haskell by mapping for this infinite list ,
+        - e.g. to get only a list of even numbers (by doubling all entries)
+        - and then you can just get the first ten entries and because Haskell is lazy it will then only calculate the first ten values
+    - you can do the same in R via recursion (R doesn't have infinitive data structures by default) and then measure how deep we are in the recursion to "stop" at a certain point (like take the ten first values)
+    - but be careful with sys.calls (if your environment is not clean, this will not get you the correct number, because you've already done a few sys calls)
+    - R is a lazy language which makes it in theory sometimes very efficient
+- comments:
+    - lazyness can be interesting by database queries
+    - it's more a fun exercise to learn more about the quirks of a language ;-)
+
+
+# SSLA Matrix channel within the workspace of chat.archaeo.social hosted by Joe Roe
+
+- on chat.archaeo.social there are e.g. jobs-channel, resource-channel ->  check out the links postet there, there is some activity
+- joined forces with other computational archaeology groups like Rchaeology
+
+- **please make an account** and request access to the SIG SSLA channel either on the social platform or via Email to Clemens or Sophie (tell us your username for archaeo.social then)
+
+- deadline: **WE WILL CLOSE DOWN SLACK IN 2 MONTH!**
+
+# next meeting
+- 02nd of October 2023
+- Dries will ask the archaeoriddle people to join us and present their project