バージョン 9 から バージョン 10 における更新: ADERIS

更新日時:

2014/12/25 17:07:46 (10 年 前)

更新者:

wu

コメント:

--

ADERIS

@@ -21 +21 @@
 Result:
 
+query1: results:zero.
+
 ||Query\time(ms) ||time 1 || time 2 || time 3 ||time 4||time 5 ||
-||case1 ||      27010||０||0||０||        ０||
+||case1 ||      27010||25249||25710||25481||    26147||
 
 
 
 * Analysis:
+
+{{{
 1. When doing queries, ADERIS firstly queries each data sources using SPARQL to find out the
   number of distinct predicate values(Data about subjects/objects  not retrieved.)
-select distinct ?p where { ?s ?p ?o };
-select count(?p) where { ?s ?p ?o };
 
-potential consequences:
-Without using caches and any metadata information pre-fetched, the system query each endpoint in real time,
-which could take a long time, especially, when the number of endpoints increases.
+  select distinct ?p where { ?s ?p ?o };
+  select count(?p) where { ?s ?p ?o };
 
-2.
+'''potential consequences:'''
+
+ Without using caches and any metadata information pre-fetched, the system query each endpoint in real time,
+which could take a long time, especially, when the number of endpoints increases. 
+
+}}}