search_answer.py

#!/usr/bin/env python3
# coding: utf-8
from py2neo import Graph


class AnswerSearching:
    def __init__(self):
        self.graph = Graph("http://localhost:7474", username="neo4j", password="123456789")
        self.top_num = 10

    def question_parser(self, data):
        """
        主要是根据不同的实体和意图构造cypher查询语句
        :param data: {"Disease":[], "Alias":[], "Symptom":[], "Complication":[]}
        :return:
        """
        sqls = []
        if data:
            for intent in data["intentions"]:
                sql_ = {}
                sql_["intention"] = intent
                sql = []
                if data.get("Disease"):
                   sql = self.transfor_to_sql("Disease", data["Disease"], intent)
                elif data.get("Alias"):
                    sql = self.transfor_to_sql("Alias", data["Alias"], intent)
                elif data.get("Symptom"):
                    sql = self.transfor_to_sql("Symptom", data["Symptom"], intent)
                elif data.get("Complication"):
                    sql = self.transfor_to_sql("Complication", data["Complication"], intent)

                if sql:
                    sql_['sql'] = sql
                    sqls.append(sql_)
        return sqls

    def transfor_to_sql(self, label, entities, intent):
        """
        将问题转变为cypher查询语句
        :param label:实体标签
        :param entities:实体列表
        :param intent:查询意图
        :return:cypher查询语句
        """
        if not entities:
            return []
        sql = []

        # 查询症状
        if intent == "query_symptom" and label == "Disease":
            sql = ["MATCH (d:Disease)-[:HAS_SYMPTOM]->(s) WHERE d.name='{0}' RETURN d.name,s.name".format(e)
                   for e in entities]
        if intent == "query_symptom" and label == "Alias":
            sql = ["MATCH (a:Alias)<-[:ALIAS_IS]-(d:Disease)-[:HAS_SYMPTOM]->(s) WHERE a.name='{0}' return " \
                   "d.name,s.name".format(e) for e in entities]

        # 查询治疗方法
        if intent == "query_cureway" and label == "Disease":
            sql = ["MATCH (d:Disease)-[:HAS_DRUG]->(n) WHERE d.name='{0}' return d.name,d.treatment," \
                   "n.name".format(e) for e in entities]
        if intent == "query_cureway" and label == "Alias":
            sql = ["MATCH (n)<-[:HAS_DRUG]-(d:Disease)-[]->(a:Alias) WHERE a.name='{0}' " \
                   "return d.name, d.treatment, n.name".format(e) for e in entities]
        if intent == "query_cureway" and label == "Symptom":
            sql = ["MATCH (n)<-[:HAS_DRUG]-(d:Disease)-[]->(s:Symptom) WHERE s.name='{0}' " \
                   "return d.name,d.treatment, n.name".format(e) for e in entities]
        if intent == "query_cureway" and label == "Complication":
            sql = ["MATCH (n)<-[:HAS_DRUG]-(d:Disease)-[]->(c:Complication) WHERE c.name='{0}' " \
                   "return d.name,d.treatment, n.name".format(e) for e in entities]

        # 查询治疗周期
        if intent == "query_period" and label == "Disease":
            sql = ["MATCH (d:Disease) WHERE d.name='{0}' return d.name,d.period".format(e) for e in entities]
        if intent == "query_period" and label == "Alias":
            sql = ["MATCH (d:Disease)-[]->(a:Alias) WHERE a.name='{0}' return d.name,d.period".format(e)
                   for e in entities]
        if intent == "query_period" and label == "Symptom":
            sql = ["MATCH (d:Disease)-[]->(s:Symptom) WHERE s.name='{0}' return d.name,d.period".format(e)
                   for e in entities]
        if intent == "query_period" and label == "Complication":
            sql = ["MATCH (d:Disease)-[]->(c:Complication) WHERE c.name='{0}' return d.name," \
                   "d.period".format(e) for e in entities]

        # 查询治愈率
        if intent == "query_rate" and label == "Disease":
            sql = ["MATCH (d:Disease) WHERE d.name='{0}' return d.name,d.rate".format(e) for e in entities]
        if intent == "query_rate" and label == "Alias":
            sql = ["MATCH (d:Disease)-[]->(a:Alias) WHERE a.name='{0}' return d.name,d.rate".format(e)
                   for e in entities]
        if intent == "query_rate" and label == "Symptom":
            sql = ["MATCH (d:Disease)-[]->(s:Symptom) WHERE s.name='{0}' return d.name,d.rate".format(e)
                   for e in entities]
        if intent == "query_rate" and label == "Complication":
            sql = ["MATCH (d:Disease)-[]->(c:Complication) WHERE c.name='{0}' return d.name," \
                   "d.rate".format(e) for e in entities]

        # 查询检查项目
        if intent == "query_checklist" and label == "Disease":
            sql = ["MATCH (d:Disease) WHERE d.name='{0}' return d.name,d.checklist".format(e) for e in entities]
        if intent == "query_checklist" and label == "Alias":
            sql = ["MATCH (d:Disease)-[]->(a:Alias) WHERE a.name='{0}' return d.name,d.checklist".format(e)
                   for e in entities]
        if intent == "query_checklist" and label == "Symptom":
            sql = ["MATCH (d:Disease)-[]->(s:Symptom) WHERE s.name='{0}' return d.name," \
                   "d.checklist".format(e) for e in entities]
        if intent == "query_checklist" and label == "Complication":
            sql = ["MATCH (d:Disease)-[]->(c:Complication) WHERE c.name='{0}' return d.name," \
                   "d.checklist".format(e) for e in entities]

        # 查询科室
        if intent == "query_department" and label == "Disease":
            sql = ["MATCH (d:Disease)-[:DEPARTMENT_IS]->(n) WHERE d.name='{0}' return d.name," \
                   "n.name".format(e) for e in entities]
        if intent == "query_department" and label == "Alias":
            sql = ["MATCH (n)<-[:DEPARTMENT_IS]-(d:Disease)-[:ALIAS_IS]->(a:Alias) WHERE a.name='{0}' " \
                   "return d.name,n.name".format(e) for e in entities]
        if intent == "query_department" and label == "Symptom":
            sql = ["MATCH (n)<-[:DEPARTMENT_IS]-(d:Disease)-[:HAS_SYMPTOM]->(s:Symptom) WHERE s.name='{0}' " \
                   "return d.name,n.name".format(e) for e in entities]
        if intent == "query_department" and label == "Complication":
            sql = ["MATCH (n)<-[:DEPARTMENT_IS]-(d:Disease)-[:HAS_COMPLICATION]->(c:Complication) WHERE " \
                   "c.name='{0}' return d.name,n.name".format(e) for e in entities]

        # 查询疾病
        if intent == "query_disease" and label == "Alias":
            sql = ["MATCH (d:Disease)-[]->(s:Alias) WHERE s.name='{0}' return " \
                   "d.name".format(e) for e in entities]
        if intent == "query_disease" and label == "Symptom":
            sql = ["MATCH (d:Disease)-[]->(s:Symptom) WHERE s.name='{0}' return " \
                   "d.name".format(e) for e in entities]

        # 查询疾病描述
        if intent == "disease_describe" and label == "Alias":
            sql = ["MATCH (d:Disease)-[]->(a:Alias) WHERE a.name='{0}' return d.name,d.age," \
                   "d.insurance,d.infection,d.checklist,d.period,d.rate,d.money".format(e) for e in entities]
        if intent == "disease_describe" and label == "Disease":
            sql = ["MATCH (d:Disease) WHERE d.name='{0}' return d.name,d.age,d.insurance,d.infection," \
                   "d.checklist,d.period,d.rate,d.money".format(e) for e in entities]
        if intent == "disease_describe" and label == "Symptom":
            sql = ["MATCH (d:Disease)-[]->(s:Symptom) WHERE s.name='{0}' return d.name,d.age," \
                   "d.insurance,d.infection,d.checklist,d.period,d.rate,d.money".format(e) for e in entities]
        if intent == "disease_describe" and label == "Complication":
            sql = ["MATCH (d:Disease)-[]->(c:Complication) WHERE c.name='{0}' return d.name," \
                   "d.age,d.insurance,d.infection,d.checklist,d.period,d.rate,d.money".format(e) for e in entities]

        return sql

    def searching(self, sqls):
        """
        执行cypher查询，返回结果
        :param sqls:
        :return:str
        """
        final_answers = []
        for sql_ in sqls:
            intent = sql_['intention']
            queries = sql_['sql']
            answers = []
            for query in queries:
                ress = self.graph.run(query).data()
                answers += ress
            final_answer = self.answer_template(intent, answers)
            if final_answer:
                final_answers.append(final_answer)
        return final_answers

    def answer_template(self, intent, answers):
        """
        根据不同意图，返回不同模板的答案
        :param intent: 查询意图
        :param answers: 知识图谱查询结果
        :return: str
        """
        final_answer = ""
        if not answers:
            return ""
        # 查询症状
        if intent == "query_symptom":
            disease_dic = {}
            for data in answers:
                d = data['d.name']
                s = data['s.name']
                if d not in disease_dic:
                    disease_dic[d] = [s]
                else:
                    disease_dic[d].append(s)
            i = 0
            for k, v in disease_dic.items():
                if i >= 10:
                    break
                final_answer += "疾病 {0} 的症状有：{1}\n".format(k, ','.join(list(set(v))))
                i += 1
        # 查询疾病
        if intent == "query_disease":
            disease_freq = {}
            for data in answers:
                d = data["d.name"]
                disease_freq[d] = disease_freq.get(d, 0) + 1
            n = len(disease_freq.keys())
            freq = sorted(disease_freq.items(), key=lambda x: x[1], reverse=True)
            for d, v in freq[:10]:
                final_answer += "疾病为 {0} 的概率为：{1}\n".format(d, v/10)
        # 查询治疗方法
        if intent == "query_cureway":
            disease_dic = {}
            for data in answers:
                disease = data['d.name']
                treat = data["d.treatment"]
                drug = data["n.name"]
                if disease not in disease_dic:
                    disease_dic[disease] = [treat, drug]
                else:
                    disease_dic[disease].append(drug)
            i = 0
            for d, v in disease_dic.items():
                if i >= 10:
                    break
                final_answer += "疾病 {0} 的治疗方法有：{1}；可用药品包括：{2}\n".format(d, v[0], ','.join(v[1:]))
                i += 1
        # 查询治愈周期
        if intent == "query_period":
            disease_dic = {}
            for data in answers:
                d = data['d.name']
                p = data['d.period']
                if d not in disease_dic:
                    disease_dic[d] = [p]
                else:
                    disease_dic[d].append(p)
            i = 0
            for k, v in disease_dic.items():
                if i >= 10:
                    break
                final_answer += "疾病 {0} 的治愈周期为：{1}\n".format(k, ','.join(list(set(v))))
                i += 1
        # 查询治愈率
        if intent == "query_rate":
            disease_dic = {}
            for data in answers:
                d = data['d.name']
                r = data['d.rate']
                if d not in disease_dic:
                    disease_dic[d] = [r]
                else:
                    disease_dic[d].append(r)
            i = 0
            for k, v in disease_dic.items():
                if i >= 10:
                    break
                final_answer += "疾病 {0} 的治愈率为：{1}\n".format(k, ','.join(list(set(v))))
                i += 1
        # 查询检查项目
        if intent == "query_checklist":
            disease_dic = {}
            for data in answers:
                d = data['d.name']
                r = data['d.checklist']
                if d not in disease_dic:
                    disease_dic[d] = [r]
                else:
                    disease_dic[d].append(r)
            i = 0
            for k, v in disease_dic.items():
                if i >= 10:
                    break
                final_answer += "疾病 {0} 的检查项目有：{1}\n".format(k, ','.join(list(set(v))))
                i += 1
        # 查询科室
        if intent == "query_department":
            disease_dic = {}
            for data in answers:
                d = data['d.name']
                r = data['n.name']
                if d not in disease_dic:
                    disease_dic[d] = [r]
                else:
                    disease_dic[d].append(r)
            i = 0
            for k, v in disease_dic.items():
                if i >= 10:
                    break
                final_answer += "疾病 {0} 所属科室有：{1}\n".format(k, ','.join(list(set(v))))
                i += 1
        # 查询疾病描述
        if intent == "disease_describe":
            disease_infos = {}
            for data in answers:
                name = data['d.name']
                age = data['d.age']
                insurance = data['d.insurance']
                infection = data['d.infection']
                checklist = data['d.checklist']
                period = data['d.period']
                rate = data['d.rate']
                money = data['d.money']
                if name not in disease_infos:
                    disease_infos[name] = [age, insurance, infection, checklist, period, rate, money]
                else:
                    disease_infos[name].extend([age, insurance, infection, checklist, period, rate, money])
            i = 0
            for k, v in disease_infos.items():
                if i >= 10:
                    break
                message = "疾病 {0} 的描述信息如下：\n发病人群：{1}\n医保：{2}\n传染性：{3}\n检查项目：{4}\n" \
                          "治愈周期：{5}\n治愈率：{6}\n费用：{7}\n"
                final_answer += message.format(k, v[0], v[1], v[2], v[3], v[4], v[5], v[6])
                i += 1

        return final_answer