qingz11 / nebulagraph-ai

NebulaGraph AI High-Level API, do Graph Algo, Analytics in 4 lines of code.

NebulaGraph AI Suite with 4 line code to run Graph Algo on NebulaGraph

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Documentation: https://github.com/wey-gu/nebulagraph-ai#documentation

Source Code: https://github.com/wey-gu/nebulagraph-ai

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NebulaGraph AI Suite for Python (ng_ai) is a powerful Python library that offers APIs for data scientists to effectively read, write, analyze, and compute data in NebulaGraph.

With the support of a single-machine engine(NetworkX), or distributed computing environment using Spark, we could perform Graph Analysis and Algorithms on top of NebulaGraph in less than 10 lines of code, in unified and intuitive API.

Quick Start in 5 Minutes

Option 1: Try on your Desktop. Go with NebulaGraph Docker Extension!

Option 2: On Linux Server? Go with Nebula-Up 👇🏻

• Set up env with Nebula-Up following this guide.
• Install ng_ai with pip from the Jupyter Notebook with http://localhost:8888 (password: nebula).
• Open the demo notebook and run cells one by one.
• Check the API Reference

Installation

pip install ng_ai

Usage

Call from nGQL

See more details in the docs

RETURN ng_ai("pagerank", ["follow"], ["degree"], "spark",
    {space: "basketballplayer", max_iter: 10}, {write_mode: "insert"})

Spark Engine Examples

See also: examples/spark_engine.ipynb

Run Algorithm on top of NebulaGraph:

Note, there is also a query mode, refer to examples or docs for more details.

from ng_ai import NebulaReader

# read data with spark engine, scan mode
reader = NebulaReader(engine="spark")
reader.scan(edge="follow", props="degree")
df = reader.read()

# run pagerank algorithm
pr_result = df.algo.pagerank(reset_prob=0.15, max_iter=10)

Write back to NebulaGraph:

from ng_ai import NebulaWriter
from ng_ai.config import NebulaGraphConfig

config = NebulaGraphConfig()

properties = {"louvain": "cluster_id"}

writer = NebulaWriter(
    data=df_result, sink="nebulagraph_vertex", config=config, engine="spark")
writer.set_options(
    tag="louvain", vid_field="_id", properties=properties,
    batch_size=256, write_mode="insert",)
writer.write()

Then we could query the result in NebulaGraph:

MATCH (v:louvain)
RETURN id(v), v.louvain.cluster_id LIMIT 10;

NebulaGraph Engine Examples

Basically the same as Spark Engine, but with engine="nebula", refer to examples or docs for more details.

- reader = NebulaReader(engine="spark")
+ reader = NebulaReader(engine="nebula")

Documentation

Environment Setup

API Reference

How it works

ng_ai is a unified abstraction layer for different engines, the current implementation is based on Spark, NetworkX, DGL, and NebulaGraph, but it's easy to extend to other engines like Flink, GraphScope, PyG, etc.

          ┌───────────────────────────────────────────────────┐
          │   Spark Cluster                                   │
          │    .─────.    .─────.    .─────.    .─────.       │
          │   ;       :  ;       :  ;       :  ;       :      │
       ┌─▶│   :       ;  :       ;  :       ;  :       ;      │
       │  │    ╲     ╱    ╲     ╱    ╲     ╱    ╲     ╱       │
       │  │     `───'      `───'      `───'      `───'        │
  Algo Spark                                                  │
    Engine└───────────────────────────────────────────────────┘
       │  ┌────────────────────────────────────────────────────┬──────────┐
       └──┤                                                    │          │
          │   NebulaGraph AI Suite(ngai)                       │ ngai-api │◀─┐
          │                                                    │          │  │
          │                                                    └──────────┤  │
          │     ┌────────┐    ┌──────┐    ┌────────┐   ┌─────┐            │  │
          │     │ Reader │    │ Algo │    │ Writer │   │ GNN │            │  │
 ┌───────▶│     └────────┘    └──────┘    └────────┘   └─────┘            │  │
 │        │          │            │            │          │               │  │
 │        │          ├────────────┴───┬────────┴─────┐    └──────┐        │  │
 │        │          ▼                ▼              ▼           ▼        │  │
 │        │   ┌─────────────┐ ┌──────────────┐ ┌──────────┐┌──────────┐   │  │
 │     ┌──┤   │ SparkEngine │ │ NebulaEngine │ │ NetworkX ││ DGLEngine│   │  │
 │     │  │   └─────────────┘ └──────────────┘ └──────────┘└──────────┘   │  │
 │     │  └──────────┬────────────────────────────────────────────────────┘  │
 │     │             │        Spark                                          │
 │     │             └────────Reader ────────────┐                           │
 │  Spark                   Query Mode           │                           │
 │  Reader                                       │                           │
 │Scan Mode                                      ▼                      ┌─────────┐
 │     │  ┌───────────────────────────────────────────────────┬─────────┤ ngai-udf│◀─────────────┐
 │     │  │                                                   │         └─────────┤              │
 │     │  │  NebulaGraph Graph Engine         Nebula-GraphD   │   ngai-GraphD     │              │
 │     │  ├──────────────────────────────┬────────────────────┼───────────────────┘              │
 │     │  │                              │                    │                                  │
 │     │  │  NebulaGraph Storage Engine  │                    │                                  │
 │     │  │                              │                    │                                  │
 │     └─▶│  Nebula-StorageD             │    Nebula-Metad    │                                  │
 │        │                              │                    │                                  │
 │        └──────────────────────────────┴────────────────────┘                                  │
 │                                                                                               │
 │    ┌───────────────────────────────────────────────────────────────────────────────────────┐  │
 │    │ RETURN ng_ai("pagerank", ["follow"], ["degree"], "spark", {space:"basketballplayer"}) │──┘
 │    └───────────────────────────────────────────────────────────────────────────────────────┘
 │  ┌─────────────────────────────────────────────────────────────┐
 │  │ from ng_ai import NebulaReader                              │
 │  │                                                             │
 │  │ # read data with spark engine, scan mode                    │
 │  │ reader = NebulaReader(engine="spark")                       │
 │  │ reader.scan(edge="follow", props="degree")                  │
 └──│ df = reader.read()                                          │
    │                                                             │
    │ # run pagerank algorithm                                    │
    │ pr_result = df.algo.pagerank(reset_prob=0.15, max_iter=10)  │
    │                                                             │
    └─────────────────────────────────────────────────────────────┘  

Spark Engine Prerequisites

• Spark 2.4, 3.0(not yet tested)
• NebulaGraph 3.4+
• NebulaGraph Spark Connector 3.4+
• NebulaGraph Algorithm 3.1+

NebulaGraph Engine Prerequisites

• NebulaGraph 3.4+
• NebulaGraph Python Client 3.4+
• NetworkX

Contributing

See HACKING.md for details.

License

This project is licensed under the terms of the Apache License 2.0.