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#! -*- coding: utf8 -*-
import pymysql
import pandas as pd
from multiprocessing import Pool
import numpy as np
from sqlalchemy import create_engine
def con_sql(db,sql):
cursor = db.cursor()
try:
cursor.execute(sql)
result = cursor.fetchall()
df = pd.DataFrame(list(result)).dropna()
except Exception:
print("发生异常", Exception)
df = pd.DataFrame()
finally:
db.close()
return df
def get_data():
db = pymysql.connect(host='10.66.157.22', port=4000, user='root', passwd='3SYz54LS9#^9sBvC', db='jerry_prod')
sql = "select * from esmm_data where stat_date >= '2018-11-20' limit 6"
esmm = con_sql(db,sql)
esmm = esmm.rename(columns={0:"stat_date",1: "device_id",2:"ucity_id",3:"cid_id",4:"diary_service_id",5:"y",
6:"z",7:"clevel1_id",8:"slevel1_id"})
print("esmm data ok")
print(esmm.head())
print(esmm.shape)
db = pymysql.connect(host='10.66.157.22', port=4000, user='root', passwd='3SYz54LS9#^9sBvC', db='eagle')
sql = "select * from home_tab_click limit 6"
temp = con_sql(db,sql)
temp = temp.rename(columns={0: "device_id"})
print("click data ok")
# print(temp.head())
df = pd.merge(esmm,temp,on = "device_id",how='left').fillna(0)
# print("合并后：")
print(df.shape)
df["diary_service_id"] = df["diary_service_id"].astype("str")
df["clevel1_id"] = df["clevel1_id"].astype("str")
df["slevel1_id"] = df["slevel1_id"].astype("str")
df["cid_id"] = df["cid_id"].astype("str")
df["y"] = df["y"].astype("str")
df["z"] = df["z"].astype("str")
df["y"] = df["stat_date"].str.cat([df["device_id"].values.tolist(),df["ucity_id"].values.tolist(), df["cid_id"].values.tolist(),
df["y"].values.tolist(),df["z"].values.tolist()], sep=",")
df = df.drop("z", axis=1)
print(df.head())
transform(df)
def transform(df):
model = multiFFMFormatPandas()
df = model.fit_transform(df, y="y", n=80000, processes=20)
df = pd.DataFrame(df)
df["stat_date"] = df[0].apply(lambda x: x.split(",")[0])
df["device_id"] = df[0].apply(lambda x: x.split(",")[1])
df["city_id"] = df[0].apply(lambda x: x.split(",")[2])
df["diary_id"] = df[0].apply(lambda x: x.split(",")[3])
df["seq"] = list(range(df.shape[0]))
df["seq"] = df["seq"].astype("str")
df["ffm"] = df[0].apply(lambda x: ",".join(x.split(",")[4:]))
df["ffm"] = df["seq"].str.cat(df["ffm"], sep=",")
df["random"] = np.random.randint(1, 2147483647, df.shape[0])
df = df.drop(0, axis=1).drop("seq",axis=1)
print("size")
print(df.shape)
print(df.head())
train = df[df["stat_date"] != "2018-11-25"]
train = train.drop("stat_date",axis=1)
test = df[df["stat_date"] == "2018-11-25"]
test = test.drop("stat_date",axis=1)
train.to_csv(path+"train.csv",index=None)
test.to_csv(path + "test.csv", index=None)
# yconnect = create_engine('mysql+pymysql://root:3SYz54LS9#^9sBvC@10.66.157.22:4000/jerry_test?charset=utf8')
# n = 100000
# for i in range(0,df.shape[0],n):
# print(i)
# if i == 0:
# temp = df.loc[0:n]
# elif i+n > df.shape[0]:
# temp = df.loc[i+1:]
# else:
# temp = df.loc[i+1:i+n]
# pd.io.sql.to_sql(temp, table, yconnect, schema='jerry_test', if_exists='append', index=False)
# print("insert done")
class multiFFMFormatPandas:
def __init__(self):
self.field_index_ = None
self.feature_index_ = None
self.y = None
def fit(self, df, y=None):
self.y = y
df_ffm = df[df.columns.difference([self.y])]
if self.field_index_ is None:
self.field_index_ = {col: i for i, col in enumerate(df_ffm)}
if self.feature_index_ is not None:
last_idx = max(list(self.feature_index_.values()))
if self.feature_index_ is None:
self.feature_index_ = dict()
last_idx = 0
for col in df.columns:
vals = df[col].unique()
for val in vals:
if pd.isnull(val):
continue
name = '{}_{}'.format(col, val)
if name not in self.feature_index_:
self.feature_index_[name] = last_idx
last_idx += 1
self.feature_index_[col] = last_idx
last_idx += 1
return self
def fit_transform(self, df, y=None,n=50000,processes=4):
# n是每个线程运行最大的数据条数,processes是线程数
self.fit(df, y)
n = n
processes = processes
return self.transform(df,n,processes)
def transform_row_(self, row, t):
ffm = []
for col, val in row.loc[row.index != self.y].to_dict().items():
col_type = t[col]
name = '{}_{}'.format(col, val)
if col_type.kind == 'O':
ffm.append('{}:{}:1'.format(self.field_index_[col]+1, self.feature_index_[name]))
elif col_type.kind == 'i':
ffm.append('{}:{}:{}'.format(self.field_index_[col]+1, self.feature_index_[col], val))
result = ' '.join(ffm)
if self.y is not None:
result = str(row.loc[row.index == self.y][0]) + "," + result
if self.y is None:
result = str(0) + "," + result
return result
def transform(self, df,n=1500,processes=2):
# n是每个线程运行最大的数据条数,processes是线程数
t = df.dtypes.to_dict()
data_list = self.data_split_line(df,n)
# 设置进程的数量
pool = Pool(processes)
print("总进度: " + str(len(data_list)))
for i in range(len(data_list)):
data_list[i] = pool.apply_async(self.pool_function, (data_list[i], t,))
result_map = {}
for i in data_list:
result_map.update(i.get())
pool.close()
pool.join()
return pd.Series(result_map)
# 多进程计算方法
def pool_function(self, df, t):
return {idx: self.transform_row_(row, t) for idx, row in df.iterrows()}
# 切分数据方法，传人dataframe和切分条数的步长,返回dataframe的集合，每个dataframe中含有若干条数据
def data_split_line(self, data, step):
data_list = []
x = 0
while True:
if x + step < data.__len__():
data_list.append(data.iloc[x:x + step])
x = x + step + 1
else:
data_list.append(data.iloc[x:data.__len__()])
break
return data_list
# 原生转化方法，不需要多进程
def native_transform(self, df):
t = df.dtypes.to_dict()
return pd.Series({idx: self.transform_row_(row, t) for idx, row in df.iterrows()})
# 下面这个方法不是这个类原有的方法，是新增的。目的是用来判断这个用户是不是在训练数据集中存在
def is_feature_index_exist(self, name):
if name in self.feature_index_:
return True
else:
return False
if __name__ == "__main__":
path = "/home/gmuser/ffm/"
get_data()