>From Ian Maxon <[email protected]>:

Attention is currently required from: Ali Alsuliman, Calvin Thomas Dani.

Ian Maxon has posted comments on this change by Calvin Thomas Dani. ( 
https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126?usp=email )

Change subject: [ASTERIXDB-3676] Vector Distance Functions
......................................................................


Patch Set 30:

(9 comments)

File 
asterixdb/asterix-app/src/test/java/org/apache/asterix/test/runtime/VectorDistanceSqlppExecutionTest.java:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/66caf687_25ad39ff?usp=email
 :
PS30, Line 42: public class VectorDistanceSqlppExecutionTest {
i don't understand why this class is added instead of just running the vector 
queries in the main sqlpp suite?


File 
asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/vector/VectorQueries.xml:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/c0f8b5ef_68bd0b3a?usp=email
 :
PS30, Line 20: check-warnings="false"
why not check warnings?


File asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/be5b2f37_087d60b8?usp=email
 :
PS30, Line 35: /test-suite>
the vector queries are mentioned as an entity, but not used. it should be both 
or neither.


File 
asterixdb/asterix-om/src/main/java/org/apache/asterix/om/functions/BuiltinFunctions.java:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/747a5607_afe683c3?usp=email
 :
PS30, Line 1206:     public static final FunctionIdentifier DOT_DISTANCE_ARRAY 
= FunctionConstants.newAsterix("dot-distance", 2);
dot isn't really a distance, is it? it's a similarity metric but not a 
distance, right?


File 
asterixdb/asterix-om/src/main/java/org/apache/asterix/om/types/hierachy/ATypeHierarchy.java:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/4a5a3b27_aaad28e0?usp=email
 :
PS30, Line 151:     public static ATypeTag getCommonNumericType(ATypeTag t1, 
ATypeTag t2) {
unused


File 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/functions/vector/VectorDistanceArrScalarEvaluator.java:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/bf1bba21_a6388cac?usp=email
 :
PS30, Line 254:               ExceptionUtil.warnUnsupportedType(ctx, sourceLoc, 
funcId.getName() + "()", leftArgType);
              :                 ExceptionUtil.warnUnsupportedType(ctx, 
sourceLoc, funcId.getName() + "()", rightArgType);
why issue two warnings here, instead of one saying neither argument is a 
numeric list?


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/841d0f0b_9c32a279?usp=email
 :
PS30, Line 421: org.apache.hyracks.api.exceptions.Warning.of
would be nicer to just import the class or static method instead of using the 
fully qualified name


File 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/utils/VectorDistanceArrCalculation.java:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/07136942_b07ee5a2?usp=email
 :
PS30, Line 144:     public static double manhattan(double[] a, double[] b) {
this is unused. should it be removed?


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/20126/comment/a0372d05_48fc9639?usp=email
 :
PS30, Line 171:         return dot / (Math.sqrt(normA) * Math.sqrt(normB));
claude says this is similarity, not distance. a brief look at wikipedia seems 
to agree. why does this (and it's friends) not return 1-(A⋅B/(||A||||B||))? or 
should we rename it to similarity because that's what we need/use in most cases?



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Gerrit-MessageType: comment
Gerrit-Project: asterixdb
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Gerrit-Change-Id: I45176e7da13ed222f48bb36bd1f0ab4074a0bcb9
Gerrit-Change-Number: 20126
Gerrit-PatchSet: 30
Gerrit-Owner: Calvin Thomas Dani <[email protected]>
Gerrit-Reviewer: Ali Alsuliman <[email protected]>
Gerrit-Reviewer: Anon. E. Moose #1000171
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