论文标题
边缘标记的图形和属性图；从用户的角度进行比较
Edge Labelled Graphs and Property Graphs; a comparison from the user perspective
论文作者
论文摘要
这项研究比较了参与者对属性图和边缘标记的图形范式的接受，如Cypher所示，以及拟议的扩展对W3C标准，RDF*和SPARQL*。 通常，建模偏好在两个范式中是一致的。当提供位置信息时，参与者宁愿创建节点来代表城市，而不是使用元数据。尽管对Cypher的偏好不太明显。在Cypher中，参与者在表示日期或人口大小作为节点之间的偏好差异很小。在RDF*中，这是不需要的，因为两者都可以表示为文字。但是，有很大的偏爱将日期用作元数据来描述包含人口大小的三重，反之亦然。在两个范式中，查询的解释准确性总体上没有显着差异。尽管在一种特定情况下，在一个特定情况下，在Cypher中使用反向箭头的使用比SPARQL中的 ^符号更准确地解释了。根据我们的结果和参与者的评论，我们对建模者提出了一些建议。 REFF RDF的技术吸引了大量研究。最近，采用了一种使用属性图的某些功能的混合方法声称为RDF重新化提供了改进的技术。查询时间推理也是一项要求，它促使对SPARQL提出了许多建议的扩展，并且只能在属性图范式中在有限的范围内。另一个最近的发展，HyperGraph范式可以实现更强大的查询时间推理。需要对用户接受这些更强大的建模和查询方法进行更多研究。这样的研究应考虑复杂的建模情况。
This study compares participant acceptance of the property graph and edge-labelled graph paradigms, as represented by Cypher and the proposed extensions to the W3C standards, RDF* and SPARQL*. In general, modelling preferences are consistent across the two paradigms. When presented with location information, participants preferred to create nodes to represent cities, rather than use metadata; although the preference was less marked for Cypher. In Cypher, participants showed little difference in preference between representing dates or population size as nodes. In RDF*, this choice was not necessary since both could be represented as literals. However, there was a significant preference for using the date as metadata to describe a triple containing population size, rather than vice versa. There was no significant difference overall in accuracy of interpretation of queries in the two paradigms; although in one specific case, the use of a reverse arrow in Cypher was interpreted significantly more accurately than the ^ symbol in SPARQL. Based on our results and on the comments of participants, we make some recommendations for modellers. Techniques for reifing RDF have attracted a great deal of research. Recently, a hybrid approach, employing some of the features of property graphs, has claimed to offer an improved technique for RDF reification. Query-time reasoning is also a requirement which has prompted a number of proposed extensions to SPARQL and which is only possible to a limited extent in the property graph paradigm. Another recent development, the hypergraph paradigm enables more powerful query-time reasoning. There is a need for more research into the user acceptance of these various more powerful approaches to modelling and querying. Such research should take account of complex modelling situations.
