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A graph flow engine for East Low Carbon

Project description

elcflow

Build Status PyPI version Coverage Status Documentation Status

介绍

ELC使用

指令

生成文档

cd docs && sphinx-apidoc -o source ../elcflow/ && make html

测试

pytest --cov=elcflow

使用[V2]

注册算子

使用register_elc_function_v2来注册是一个算子,算子包含以下属性:

  • name
    • 唯一的标识符,用来找到这个算子
  • parameters
    • 字典类型, 包含了默认的参数
    • 主要适用于例如指数函数,其指数当作参数
      • 给指数2 -> 平方

算子的输入和输出被严格规定 - 输入 - global_states - 全局的一个state是一个字典 - result - 前一个节点的结果 - parameters - 参数 - 输出 - 一定是一个字典

用例

from elcflow.base import register_elc_function_v2

@register_elc_function_v2(name='elc_select_data_v2')
def elc_select_data_v2(global_states, result, parameters):
    return {'return': global_states[parameters['key']]}


@register_elc_function_v2(name='elc_add_plus_plus_v2')
def elc_add_plus_plus_v2(global_states, result, parameters):
    return {'return': result['return'] + 1}


@register_elc_function_v2(name='elc_mul_v2')
def elc_mul_v2(global_states, result, parameters):
    _result = result['return'] * int(global_states['multiplier'])
    global_states['elc_mul_v2_result'] = _result
    return {'return': _result}


@register_elc_function_v2(name='elc_pow_for_mul_v2')
def elc_pow_for_mul_v2(global_states, result, parameters):
    _result = global_states['elc_mul_v2_result'] ** int(parameters['a'])
    global_states['elc_pow_for_mul_v2_result'] = _result
    return {'return': _result}

数据结构

图主要由以下两部分组成

  • nodes
    • 包含了所有的节点的信息
    • id
    • label
    • 类型
      • 数据类型
      • 算子类型
    • 其他
      • 例如算子的参数
  • edges
    • 有方向的边,从一个node的数据流向另一个node
    • id
    • source
      • 起始节点的id
    • target
      • 结束节点的id

例子

from elcflow.graph import *
from elcflow.graph import *
from elcflow.helpers import json_stringify, json_parse

_model_2_globals = {
    "global_variable_1": 5,
    "multiplier": 3
}

_model_dict_v2 = {
    "nodes": [
        {"label": "data-selector", "id": "0ea5a129", "_elc_node_type": 'operator', "_elc_function": 'elc_select_data_v2', "_elc_parameters": {"key": "global_variable_1"}},
        {"label": "add_plus_plus", "id": "8ac87236", "_elc_node_type": 'operator', "_elc_function": "elc_add_plus_plus_v2"},
        {"label": "multiplier x", "id": "0d1af6ff", "_elc_node_type": 'operator', "_elc_function": "elc_mul_v2"},
        {"label": "pow_for_mul", "id": "9d1af6ff", "_elc_node_type": 'operator', "_elc_function": "elc_pow_for_mul_v2", "_elc_parameters": {"a": 4}},
    ],
    "edges": [
        {"source": "0ea5a129", "target": "8ac87236", "id": "74bc97ca"},
        {"source": "8ac87236", "target": "0d1af6ff", "id": "d3645364"},
        {"source": "0d1af6ff", "target": "9d1af6ff", "id": "b0eb9a9b"},
    ]
}
# 从json结构parse成图
_graph = ELCGraph.create_from_elc_json(_model_dict_v2, elc_graph_version=ELC_GRAPH_VERSION_V2)
# 并且初始化global
_graph.set_state(_globals=_model_2_globals)
# 编译图: 包含了对于节点拓扑排序并且初始化的工作
_graph.compile()
# 执行图
_graph.execute()
# 画图
_graph.plot(show=True, with_state=True)

Example Graph 2

使用[V1]

注册算子

使用register_elc_function来注册是一个算子,算子包含以下属性:

  • name
    • 唯一的标识符,用来找到这个算子
  • outputs
    • list
    • 给输出取名字(在图上徐)
    • 对应到是节点输出的id
  • inputs
    • 不可选, 则使用函数中定义的名称
    • 对应到是节点输入的id
  • parameters
    • 字典类型, 包含了默认的参数
    • 主要适用于例如指数函数,其指数当作参数
      • 给指数2 -> 平方

用例

from elcflow.base import register_elc_function
@register_elc_function(outputs=['elc_output'], name='elc_exp_and_plus', parameters={'x': 5})
# 一个例子
# 表明注册了一个名称为elc_exp_and_plus算子
# 他的输入有[a,b,x]
# 其中x是参数给的默认值是5
# 它输出的名字叫做elc_output
def elc_exp_and_plus_(a, b, x=2):
    return a ** x + b ** x

数据结构

图主要由以下两部分组成

  • nodes
    • 包含了所有的节点的信息
    • id
    • label
    • 类型
      • 数据类型
      • 算子类型
    • 其他
      • 例如算子的参数
  • edges
    • 有方向的边,从一个node的某一个输出数据流向另一个node的某一个输入
    • id
    • source
      • 起始节点的id
    • target
      • 结束节点的id
    • _elc_source_output_id
      • 起始节点输出的id
        • 可能有多个输出, 取哪一个?
    • __elc_target_input_id
      • 结束节点输入的id
        • 可能有多个输入, 对应到哪一个?

例子

from elcflow.graph import *
from elcflow.graph import *
from elcflow.helpers import json_stringify, json_parse

json_model = {
    "nodes": [
        {"label": "Input-2", "id": "3362b879", "_elc_node_type": 'data'},
        {"label": "Input-1", "id": "0ea5a129", "_elc_node_type": 'data'},
        {"label": "Add", "id": "8ac87236", "_elc_node_type": 'operator', "_elc_function": "elc_add"},
        {"label": "MUL", "id": "0d1af6ff", "_elc_node_type": 'operator', "_elc_function": "elc_mul"},
        {"label": "POW", "id": "9d1af6ff", "_elc_node_type": 'operator', "_elc_function": "elc_pow", "_elc_parameters": {"a": 4}},
        {"label": "OUTPUT", "id": "1d1af6ff", "_elc_node_type": 'operator', "_elc_function": "elc_output", },
        {"label": "OUTPUT", "id": "2d1af6ff", "_elc_node_type": 'operator', "_elc_function": "elc_output"},
    ],
    "edges": [
        {"source": "0ea5a129", "target": "8ac87236", "id": "74bc97ca", "_elc_source_output_id": '', "_elc_target_input_id": "a"},
        {"source": "3362b879", "target": "8ac87236", "id": "d3645364", "_elc_source_output_id": '', "_elc_target_input_id": "b"},
        {"source": "8ac87236", "target": "0d1af6ff", "id": "b0eb9a9b", "_elc_source_output_id": 'sum_result', "_elc_target_input_id": "a"},
        {"source": "3362b879", "target": "0d1af6ff", "id": "0e6c0fde", "_elc_source_output_id": '', "_elc_target_input_id": "b"},
        {"source": "0d1af6ff", "target": "9d1af6ff", "id": "7e6c0fde", "_elc_source_output_id": 'mul_result', "_elc_target_input_id": "x"},
        {"source": "0d1af6ff", "target": "1d1af6ff", "id": "1e6c0fde", "_elc_target_input_id": "kwargs"},
        {"source": "9d1af6ff", "target": "2d1af6ff", "id": "2e6c0fde", "_elc_target_input_id": "kwargs"},
    ]
}
# 从json结构parse成图
_graph = ELCGraph.create_from_elc_json(json_model)
# 编译图: 包含了对于节点拓扑排序并且初始化的工作
_graph.compile()
# 把输入节点的数据喂进去
_graph.feed_data_dict({
    '3362b879': 5,
    '0ea5a129': 6
})
# 执行图
_graph.execute()
# 序列化整个图结构
graph_str = json_stringify(_graph.to_dict())
# 解析序列化结构到图
new_graph = ELCGraph.load(json_parse(graph_str))
# 把结果画出来
new_graph.plot(show=True, with_state=True)

Example Graph 1

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