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Hello,
When working on the `air-routes.json` both arangodb & janusgraph crash on the query `NNoutgoingUniqueLabel`.
**Logs for arrangodb:**
```
...
15:09:26| INFO - Current query is com.gra…
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## Resources
- https://www.vldb.org/pvldb/vol16/p1426-alhomssi.pdf
## Summary
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we have some expensive assertions and inefficient methods (say subgraph).
Recent publication using Monte Carlo search: https://ssc.io/publication/alphajoin-join-order-selection-a-la-alpha-go-vldb-p…
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https://www.vldb.org/pvldb/vol15/p1337-lee.pdf
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## Problem statement
In traditional database systems, query planner and optimizer chooses the right indices and join order to ensure efficient execution of query. Opensearch does not have any such …
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### Problem Description
There are sometimes different ways a query could be executed. For example a join can be executed either via nested-loop, or as hash-join. CrateDB currently uses a binary rul…
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There's pretty interesting paper [1] which among other things introduces
SELECT-oriented benchmark w/ IMBD-based dataset [2].
Let's onboard it.
[1] - https://github.com/gregrahn/join-order-benc…
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这是一个文摘,梳理一下知识图谱的一些相关概念,semantical network, semantic web, linked data, knowledge graph。
一、 Semantic Network
```
semantic network = node + relation
```
语义网络不是什么新概念,其本质就是通过符号系统描述事物的关联。按照人们对事…
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# A proposal to improve db\_bench/benchmark.sh
Hi RocksDB community! I am Bernard Jiang, a master's student at SPAIL(System Performance Analytics and Intelligence Lab) from Zhejiang University. My …
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I see that the uk14 data set from LAW was used in the Galois publication: https://www.vldb.org/pvldb/vol13/p1304-gill.pdf. Does the graph-convert tool provide a conversion from webgraph (.graph) to .g…