mirror of https://github.com/Mai-with-u/MaiBot.git
300 lines
11 KiB
Python
300 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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import os
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import sys
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import time
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import jieba
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import matplotlib.pyplot as plt
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import networkx as nx
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from dotenv import load_dotenv
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from loguru import logger
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# 添加项目根目录到 Python 路径
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root_path = os.path.abspath(os.path.join(os.path.dirname(__file__), "../../.."))
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sys.path.append(root_path)
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from src.common.database import Database # 使用正确的导入语法
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# 加载.env.dev文件
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env_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(__file__)))), '.env.dev')
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load_dotenv(env_path)
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class Memory_graph:
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def __init__(self):
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self.G = nx.Graph() # 使用 networkx 的图结构
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self.db = Database.get_instance()
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def connect_dot(self, concept1, concept2):
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self.G.add_edge(concept1, concept2)
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def add_dot(self, concept, memory):
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if concept in self.G:
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# 如果节点已存在，将新记忆添加到现有列表中
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if 'memory_items' in self.G.nodes[concept]:
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if not isinstance(self.G.nodes[concept]['memory_items'], list):
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# 如果当前不是列表，将其转换为列表
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self.G.nodes[concept]['memory_items'] = [self.G.nodes[concept]['memory_items']]
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self.G.nodes[concept]['memory_items'].append(memory)
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else:
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self.G.nodes[concept]['memory_items'] = [memory]
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else:
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# 如果是新节点，创建新的记忆列表
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self.G.add_node(concept, memory_items=[memory])
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def get_dot(self, concept):
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# 检查节点是否存在于图中
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if concept in self.G:
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# 从图中获取节点数据
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node_data = self.G.nodes[concept]
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# print(node_data)
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# 创建新的Memory_dot对象
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return concept, node_data
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return None
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def get_related_item(self, topic, depth=1):
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if topic not in self.G:
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return [], []
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first_layer_items = []
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second_layer_items = []
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# 获取相邻节点
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neighbors = list(self.G.neighbors(topic))
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# print(f"第一层: {topic}")
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# 获取当前节点的记忆项
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node_data = self.get_dot(topic)
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if node_data:
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concept, data = node_data
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if 'memory_items' in data:
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memory_items = data['memory_items']
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if isinstance(memory_items, list):
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first_layer_items.extend(memory_items)
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else:
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first_layer_items.append(memory_items)
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# 只在depth=2时获取第二层记忆
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if depth >= 2:
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# 获取相邻节点的记忆项
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for neighbor in neighbors:
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# print(f"第二层: {neighbor}")
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node_data = self.get_dot(neighbor)
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if node_data:
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concept, data = node_data
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if 'memory_items' in data:
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memory_items = data['memory_items']
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if isinstance(memory_items, list):
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second_layer_items.extend(memory_items)
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else:
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second_layer_items.append(memory_items)
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return first_layer_items, second_layer_items
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def store_memory(self):
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for node in self.G.nodes():
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dot_data = {
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"concept": node
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}
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self.db.store_memory_dots.insert_one(dot_data)
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@property
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def dots(self):
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# 返回所有节点对应的 Memory_dot 对象
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return [self.get_dot(node) for node in self.G.nodes()]
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def get_random_chat_from_db(self, length: int, timestamp: str):
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# 从数据库中根据时间戳获取离其最近的聊天记录
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chat_text = ''
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closest_record = self.db.messages.find_one({"time": {"$lte": timestamp}}, sort=[('time', -1)]) # 调试输出
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logger.info(
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f"距离time最近的消息时间: {time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(closest_record['time'])))}")
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if closest_record:
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closest_time = closest_record['time']
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group_id = closest_record['group_id'] # 获取groupid
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# 获取该时间戳之后的length条消息，且groupid相同
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chat_record = list(
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self.db.messages.find({"time": {"$gt": closest_time}, "group_id": group_id}).sort('time', 1).limit(
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length))
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for record in chat_record:
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time_str = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(record['time'])))
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try:
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displayname = "[(%s)%s]%s" % (record["user_id"], record["user_nickname"], record["user_cardname"])
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except:
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displayname = record["user_nickname"] or "用户" + str(record["user_id"])
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chat_text += f'[{time_str}] {displayname}: {record["processed_plain_text"]}\n' # 添加发送者和时间信息
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return chat_text
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return [] # 如果没有找到记录，返回空列表
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def save_graph_to_db(self):
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# 清空现有的图数据
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self.db.graph_data.delete_many({})
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# 保存节点
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for node in self.G.nodes(data=True):
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node_data = {
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'concept': node[0],
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'memory_items': node[1].get('memory_items', []) # 默认为空列表
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}
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self.db.graph_data.nodes.insert_one(node_data)
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# 保存边
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for edge in self.G.edges():
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edge_data = {
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'source': edge[0],
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'target': edge[1]
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}
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self.db.graph_data.edges.insert_one(edge_data)
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def load_graph_from_db(self):
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# 清空当前图
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self.G.clear()
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# 加载节点
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nodes = self.db.graph_data.nodes.find()
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for node in nodes:
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memory_items = node.get('memory_items', [])
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if not isinstance(memory_items, list):
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memory_items = [memory_items] if memory_items else []
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self.G.add_node(node['concept'], memory_items=memory_items)
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# 加载边
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edges = self.db.graph_data.edges.find()
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for edge in edges:
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self.G.add_edge(edge['source'], edge['target'])
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def main():
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# 初始化数据库
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Database.initialize(
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uri=os.getenv("MONGODB_URI"),
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host=os.getenv("MONGODB_HOST", "127.0.0.1"),
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port=int(os.getenv("MONGODB_PORT", "27017")),
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db_name=os.getenv("DATABASE_NAME", "MegBot"),
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username=os.getenv("MONGODB_USERNAME"),
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password=os.getenv("MONGODB_PASSWORD"),
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auth_source=os.getenv("MONGODB_AUTH_SOURCE"),
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)
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memory_graph = Memory_graph()
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memory_graph.load_graph_from_db()
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# 只显示一次优化后的图形
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visualize_graph_lite(memory_graph)
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while True:
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query = input("请输入新的查询概念（输入'退出'以结束）：")
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if query.lower() == '退出':
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break
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first_layer_items, second_layer_items = memory_graph.get_related_item(query)
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if first_layer_items or second_layer_items:
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logger.debug("第一层记忆：")
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for item in first_layer_items:
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logger.debug(item)
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logger.debug("第二层记忆：")
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for item in second_layer_items:
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logger.debug(item)
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else:
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logger.debug("未找到相关记忆。")
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def segment_text(text):
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seg_text = list(jieba.cut(text))
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return seg_text
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def find_topic(text, topic_num):
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prompt = f'这是一段文字：{text}。请你从这段话中总结出{topic_num}个话题，帮我列出来，用逗号隔开，尽可能精简。只需要列举{topic_num}个话题就好，不要告诉我其他内容。'
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return prompt
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def topic_what(text, topic):
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prompt = f'这是一段文字：{text}。我想知道这记忆里有什么关于{topic}的话题，帮我总结成一句自然的话，可以包含时间和人物。只输出这句话就好'
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return prompt
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def visualize_graph_lite(memory_graph: Memory_graph, color_by_memory: bool = False):
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# 设置中文字体
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plt.rcParams['font.sans-serif'] = ['SimHei'] # 用来正常显示中文标签
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plt.rcParams['axes.unicode_minus'] = False # 用来正常显示负号
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G = memory_graph.G
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# 创建一个新图用于可视化
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H = G.copy()
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# 移除只有一条记忆的节点和连接数少于3的节点
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nodes_to_remove = []
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for node in H.nodes():
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memory_items = H.nodes[node].get('memory_items', [])
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memory_count = len(memory_items) if isinstance(memory_items, list) else (1 if memory_items else 0)
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degree = H.degree(node)
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if memory_count < 3 or degree < 2: # 改为小于2而不是小于等于2
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nodes_to_remove.append(node)
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H.remove_nodes_from(nodes_to_remove)
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# 如果过滤后没有节点，则返回
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if len(H.nodes()) == 0:
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logger.debug("过滤后没有符合条件的节点可显示")
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return
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# 保存图到本地
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# nx.write_gml(H, "memory_graph.gml") # 保存为 GML 格式
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# 计算节点大小和颜色
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node_colors = []
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node_sizes = []
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nodes = list(H.nodes())
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# 获取最大记忆数和最大度数用于归一化
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max_memories = 1
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max_degree = 1
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for node in nodes:
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memory_items = H.nodes[node].get('memory_items', [])
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memory_count = len(memory_items) if isinstance(memory_items, list) else (1 if memory_items else 0)
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degree = H.degree(node)
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max_memories = max(max_memories, memory_count)
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max_degree = max(max_degree, degree)
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# 计算每个节点的大小和颜色
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for node in nodes:
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# 计算节点大小（基于记忆数量）
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memory_items = H.nodes[node].get('memory_items', [])
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memory_count = len(memory_items) if isinstance(memory_items, list) else (1 if memory_items else 0)
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# 使用指数函数使变化更明显
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ratio = memory_count / max_memories
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size = 500 + 5000 * (ratio) # 使用1.5次方函数使差异不那么明显
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node_sizes.append(size)
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# 计算节点颜色（基于连接数）
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degree = H.degree(node)
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# 红色分量随着度数增加而增加
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r = (degree / max_degree) ** 0.3
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red = min(1.0, r)
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# 蓝色分量随着度数减少而增加
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blue = max(0.0, 1 - red)
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# blue = 1
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color = (red, 0.1, blue)
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node_colors.append(color)
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# 绘制图形
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plt.figure(figsize=(12, 8))
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pos = nx.spring_layout(H, k=1, iterations=50) # 增加k值使节点分布更开
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nx.draw(H, pos,
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with_labels=True,
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node_color=node_colors,
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node_size=node_sizes,
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font_size=10,
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font_family='SimHei',
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font_weight='bold',
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edge_color='gray',
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width=0.5,
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alpha=0.9)
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title = '记忆图谱可视化 - 节点大小表示记忆数量，颜色表示连接数'
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plt.title(title, fontsize=16, fontfamily='SimHei')
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plt.show()
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if __name__ == "__main__":
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main()
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