Grakn 是一个开源知识图谱存储及查询系统，其自带 grakn console 等数据交互接口，具有自动推理功能，具有 CNN 等图谱深度学习扩展组件。

安装

下载 grakn linux 安装包, 并解压，接着执行如下命令启动即可

$ ./grakn server start
====================================================================================================
      ________  _____     _______  __    __  __    __      _______  _______  _____     _______
     |   __   ||   _  \  |   _   ||  |  /  /|  \  |  |    |   _   ||   _   ||   _  \  |   ____|
     |  |  |__||  | |  | |  | |  ||  | /  / |   \ |  |    |  | |__||  | |  ||  | |  | |  |
     |  | ____ |  |_| /  |  |_|  ||  |/  /  |    \|  |    |  |     |  | |  ||  |_| /  |  |____
     |  ||_   ||   _  \  |   _   ||   _  \  |   _    |    |  |  __ |  | |  ||   _  \  |   ____|
     |  |__|  ||  | \  \ |  | |  ||  | \  \ |  | \   |    |  |_|  ||  |_|  ||  | \  \ |  |____
     |________||__|  \__\|__| |__||__|  \__\|__|  \__|    |_______||_______||__|  \__\|_______|

                                         THE KNOWLEDGE GRAPH
====================================================================================================

Starting Storage............SUCCESS
Starting Engine.....................SUCCESS

导入数据

• 导入 schema

1. 将下列内容存放为 schema.gpl 文件

define

marriage sub relationship,
  has picture,
  relates spouse;

parentship sub relationship,
  relates parent,
  relates child;

person sub entity,
  has first-name,
  has middle-name,
  has surname,
  has picture,
  has age,
  has birth-date,
  has death-date,
  has gender,
  plays parent,
  plays child,
  plays spouse;

name sub attribute datatype string;
first-name sub name datatype string;
middle-name sub name datatype string;
surname sub name datatype string;
picture sub attribute datatype string;
age sub attribute datatype long;
event-date sub attribute datatype date;
birth-date sub event-date datatype date;
death-date sub event-date datatype date;
gender sub attribute datatype string;

2. 执行 console 导入命令

./graql console --keyspace genealogy --file schema.gql

其中 --keyspace genealogy 表示图谱空间

• 导入数据

1. 下载数据内容 data.gql

./graql console --keyspace genealogy --file data.gql

查询

• 获取年龄大于 60 的人

>>> match $p isa person has age > 60; get;

• 获取所有人，包含名称及年龄

>>> match $p isa person has first-name $fn, has age $a; offset 0; get;

• 插入数据

>>> insert $p isa person has first-name "Johny", has middle-name "Jimbly", has surname "Joe", has gender "male";
>>> commit

• 更新数据

>>> match $p id V139280; insert $p has age 77;
>>> commit

• 删除数据

>>> match $p isa person has first-name "Johny", has surname "Joe"; delete;
>>> commit