feature_vector UDF

[myui]

WITH fv as (
  select
    itemid,
    collect_list(other) as features, -- array<primitive>
    collect_list(cnt) as weight -- array<number>
  from
    cooccurrence
  group by
    itemid
)
select
  itemid,
  feature_vector(features, weight) as fv -- array<string>
from 
  fv;