카테고리: 개발일반

AgensGraph: graph sampling with random selection

In the previous post, we did make ag_labels() function by #plpgsql. In this time, we will make ag_sample() function that do sampling graph-data by limit N on an edge basis. Also this function has the optional parameter of whether using random-selection. PL/pgSQL is a loadable procedural language for the PostgreSQL database system. [ref] It adds ...

How to make ag_labels() function in AgensGraph

AgensGraph is a Graph DB of Labeled Property Graph model. It has label data for presenting vertices, edges. If you want to see labels list, you should type ‘\dGl’ on AgensGraph console. (article quick-guide-2-1) Meta Command \dG[+] [PATTERN] list graphs \dGe[+] [PATTERN] list graph edge labels \dGl[+] [PATTERN] list graph labels \dGv[+] [PATTERN] list graph ...

[번역] 그래프 기술의 2019년 전망

원문 제목 “Looking Forward to 2019 in Graph Technologies” 2018 년부터는 그래프 기술에 새로운 초점을 맞추기 시작했습니다. 저는 올해 계속해서 그래프 기술과 그들이 어떻게 현상을 변화시키는지 살펴 보겠습니다. 이 보고서는 2018 년 주요 그래프 데이터베이스 추세와 2019 년 예측에 대한 분석입니다. 2018 — The year of the LPG knowledge graph 우리는 작년에 라벨형 속성 그래프 (LPG)가 지식표현 ...

AgensBrowser – play Timeline

#PlayTimeline is a application function of “find neighbors” with Datetime property of graph. If a graph was propagated on the timeline, you could see with “play timeline” function of #AgensBrowser. The way of starting play is very simple. At first, you should select one property of label for the base of timeline data. That property must be ...

AgensBrowser – graph overlay

Targets of #GraphSearch would be elements (like nodes, edges) or path or sub-graph. The target of #GraphOverlay searching is a #subgraph that is matched to source graph with graph as a unit. This function works on searching full-matches by elements’ id and half-matches by same label and direction. It help you compare two graphs each other and find out related parts ...

AgensBrowser – search titles

The most basic function in #GraphVisualization tools is #GraphSearch. #AgensBrowser support various search functions like #SearchTitles, “search elements with any property value”, “search neighbors”, “search cycles”, etc. “Search titles” functions let you find fast what you want. Title is specified by “Label styles” setting. For example, if you select ‘country’ property to Title of customer label, you could see like that ...

AgensBrowser – find shortestPath

There are many paths on the graph, and finding the path of the lowest weight among them is called the #shortestPathSearch. #Path is a set of relations and means there are the dependency in the case of production lines. #AgensBrowser support #Dijkstra ‘s shortest path algorithm. (weight=# of edges) If you switch on toggle-button, shortest path algorithm work with direction of edges. ...