def _generate_features(self, input_df):
df = input_df.copy()
df["id"] = df.index + 1
es = ft.EntitySet(id="data")
es = es.entity_from_dataframe(entity_id="time_seq",
dataframe=df,
index="id",
time_index=self.dt_col)
def is_awake(column):
hour = column.dt.hour
return (((hour >= 6) & (hour <= 23)) | (hour == 0)).astype(int)
def is_busy_hours(column):
hour = column.dt.hour
return (((hour >= 7) & (hour <= 9)) | (hour >= 16) &
(hour <= 19)).astype(int)
IsAwake = make_trans_primitive(function=is_awake,
input_types=[DatetimeTimeIndex],
return_type=Numeric)
IsBusyHours = make_trans_primitive(function=is_busy_hours,
input_types=[DatetimeTimeIndex],
return_type=Numeric)
feature_matrix, feature_defs = ft.dfs(entityset=es,
target_entity="time_seq",
agg_primitives=["count"],
trans_primitives=[
"month", "weekday", "day",
"hour", "is_weekend",
IsAwake, IsBusyHours
])
return feature_matrix, feature_defs
def test_make_transform_restricts_time_arg():
make_trans_primitive(lambda time: time, [Datetime],
Numeric,
name="AllowedPrimitive",
description="This primitive should be accepted",
uses_calc_time=True)
with pytest.raises(ValueError):
make_trans_primitive(lambda time: time, [Datetime],
Numeric,
name="BadPrimitive",
description="This primitive should erorr")
def test_make_transform_restricts_time_arg():
make_trans_primitive(lambda time: time, [Datetime],
Numeric,
name="AllowedPrimitive",
description="This primitive should be accepted",
uses_calc_time=True)
error_text = "'time' is a restricted keyword. Please use a different keyword."
with pytest.raises(ValueError, match=error_text):
make_trans_primitive(lambda time: time, [Datetime],
Numeric,
name="BadPrimitive",
description="This primitive should erorr")
def test_make_transform_sets_kwargs_correctly(es):
def pd_is_in(array, list_of_outputs=None):
if list_of_outputs is None:
list_of_outputs = []
return pd.Series(array).isin(list_of_outputs)
def isin_generate_name(self):
return u"%s.isin(%s)" % (self.base_features[0].get_name(),
str(self.kwargs['list_of_outputs']))
IsIn = make_trans_primitive(
pd_is_in,
[Variable],
Boolean,
name="is_in",
description="For each value of the base feature, checks whether it is "
"in a list that is provided.",
cls_attributes={"generate_name": isin_generate_name})
isin_1_list = ["toothpaste", "coke_zero"]
isin_1_base_f = Feature(es['log']['product_id'])
isin_1 = IsIn(isin_1_base_f, list_of_outputs=isin_1_list)
isin_2_list = ["coke_zero"]
isin_2_base_f = Feature(es['log']['session_id'])
isin_2 = IsIn(isin_2_base_f, list_of_outputs=isin_2_list)
assert isin_1_base_f == isin_1.base_features[0]
assert isin_1_list == isin_1.kwargs['list_of_outputs']
assert isin_2_base_f == isin_2.base_features[0]
assert isin_2_list == isin_2.kwargs['list_of_outputs']
def test_make_transform_restricts_time_arg():
make_trans_primitive(
lambda time: time,
[Datetime],
Numeric,
name="AllowedPrimitive",
description="This primitive should be accepted",
uses_calc_time=True)
with pytest.raises(ValueError):
make_trans_primitive(
lambda time: time,
[Datetime],
Numeric,
name="BadPrimitive",
description="This primitive should erorr")
def test_make_transform_sets_kwargs_correctly(es):
def pd_is_in(array, list_of_outputs=None):
if list_of_outputs is None:
list_of_outputs = []
return pd.Series(array).isin(list_of_outputs)
def isin_generate_name(self):
return u"%s.isin(%s)" % (self.base_features[0].get_name(),
str(self.kwargs['list_of_outputs']))
IsIn = make_trans_primitive(
pd_is_in, [Variable],
Boolean,
name="is_in",
description="For each value of the base feature, checks whether it is "
"in a list that is provided.",
cls_attributes={"generate_name": isin_generate_name})
isin_1_list = ["toothpaste", "coke_zero"]
isin_1_base_f = Feature(es['log']['product_id'])
isin_1 = IsIn(isin_1_base_f, list_of_outputs=isin_1_list)
isin_2_list = ["coke_zero"]
isin_2_base_f = Feature(es['log']['session_id'])
isin_2 = IsIn(isin_2_base_f, list_of_outputs=isin_2_list)
assert isin_1_base_f == isin_1.base_features[0]
assert isin_1_list == isin_1.kwargs['list_of_outputs']
assert isin_2_base_f == isin_2.base_features[0]
assert isin_2_list == isin_2.kwargs['list_of_outputs']
def test_warns_with_unused_custom_primitives(pd_es):
def above_ten(column):
return column > 10
AboveTen = make_trans_primitive(function=above_ten,
input_types=[Numeric],
return_type=Numeric)
trans_primitives = [AboveTen]
warning_text = "Some specified primitives were not used during DFS:\n" + \
" trans_primitives: ['above_ten']\n" + \
"This may be caused by a using a value of max_depth that is too small, not setting interesting values, " + \
"or it may indicate no compatible variable types for the primitive were found in the data."
with pytest.warns(UnusedPrimitiveWarning) as record:
dfs(entityset=pd_es,
target_entity='sessions',
trans_primitives=trans_primitives,
max_depth=1)
assert record[0].message.args[0] == warning_text
# Should not raise a warning
with pytest.warns(None) as record:
dfs(entityset=pd_es,
target_entity='customers',
trans_primitives=trans_primitives,
max_depth=1)
def max_above_ten(column):
return max(column) > 10
MaxAboveTen = make_agg_primitive(function=max_above_ten,
input_types=[Numeric],
return_type=Numeric)
agg_primitives = [MaxAboveTen]
warning_text = "Some specified primitives were not used during DFS:\n" + \
" agg_primitives: ['max_above_ten']\n" + \
"This may be caused by a using a value of max_depth that is too small, not setting interesting values, " + \
"or it may indicate no compatible variable types for the primitive were found in the data."
with pytest.warns(UnusedPrimitiveWarning) as record:
dfs(entityset=pd_es,
target_entity='stores',
agg_primitives=agg_primitives,
max_depth=1)
assert record[0].message.args[0] == warning_text
# Should not raise a warning
with pytest.warns(None) as record:
dfs(entityset=pd_es,
target_entity='sessions',
agg_primitives=agg_primitives,
max_depth=1)
def test_isin_feat_custom(es):
def pd_is_in(array, list_of_outputs=None):
if list_of_outputs is None:
list_of_outputs = []
return pd.Series(array).isin(list_of_outputs)
def isin_generate_name(self):
return u"%s.isin(%s)" % (self.base_features[0].get_name(),
str(self.kwargs['list_of_outputs']))
IsIn = make_trans_primitive(
pd_is_in,
[Variable],
Boolean,
name="is_in",
description="For each value of the base feature, checks whether it is "
"in a list that is provided.",
cls_attributes={"generate_name": isin_generate_name})
isin = IsIn(es['log']['product_id'],
list_of_outputs=["toothpaste", "coke zero"])
features = [isin]
pandas_backend = PandasBackend(es, features)
df = pandas_backend.calculate_all_features(range(8), None)
true = [True, True, True, False, False, True, True, True]
v = df[isin.get_name()].values.tolist()
assert true == v
isin = Feature(es['log']['product_id']).isin(["toothpaste", "coke zero"])
features = [isin]
pandas_backend = PandasBackend(es, features)
df = pandas_backend.calculate_all_features(range(8), None)
true = [True, True, True, False, False, True, True, True]
v = df[isin.get_name()].values.tolist()
assert true == v
isin = Feature(es['log']['value']).isin([5, 10])
features = [isin]
pandas_backend = PandasBackend(es, features)
df = pandas_backend.calculate_all_features(range(8), None)
true = [False, True, True, False, False, False, False, False]
v = df[isin.get_name()].values.tolist()
assert true == v
def test_isin_feat_custom(es):
def pd_is_in(array, list_of_outputs=None):
if list_of_outputs is None:
list_of_outputs = []
return pd.Series(array).isin(list_of_outputs)
def isin_generate_name(self):
return u"%s.isin(%s)" % (self.base_features[0].get_name(),
str(self.kwargs['list_of_outputs']))
IsIn = make_trans_primitive(
pd_is_in,
[Variable],
Boolean,
name="is_in",
description="For each value of the base feature, checks whether it is "
"in a list that is provided.",
cls_attributes={"generate_name": isin_generate_name})
isin = IsIn(es['log']['product_id'],
list_of_outputs=["toothpaste", "coke zero"])
features = [isin]
pandas_backend = PandasBackend(es, features)
df = pandas_backend.calculate_all_features(range(8), None)
true = [True, True, True, False, False, True, True, True]
v = df[isin.get_name()].values.tolist()
assert true == v
isin = Feature(es['log']['product_id']).isin(["toothpaste", "coke zero"])
features = [isin]
pandas_backend = PandasBackend(es, features)
df = pandas_backend.calculate_all_features(range(8), None)
true = [True, True, True, False, False, True, True, True]
v = df[isin.get_name()].values.tolist()
assert true == v
isin = Feature(es['log']['value']).isin([5, 10])
features = [isin]
pandas_backend = PandasBackend(es, features)
df = pandas_backend.calculate_all_features(range(8), None)
true = [False, True, True, False, False, False, False, False]
v = df[isin.get_name()].values.tolist()
assert true == v
'''
assert string is not None, "string to count needs to be defined"
counts = [element.lower().count(string) for element in column]
return counts
# %%
def string_count_get_name(self):
return u"STRING_COUNT(%s, %s)" % (self.base_features[0].get_name(),
'"' + str(self.kwargs['string'] + '"'))
# %%
StringCount = make_trans_primitive(function=string_count,
input_types=[Text],
return_type=Numeric,
cls_attributes={"get_name": string_count_get_name})
# %%
from featuretools.tests.testing_utils import make_ecommerce_entityset
es = make_ecommerce_entityset()
count_the_feat = StringCount(es['log']['comments'], string="the")
# 原始日志数据
# %%
es['log'].df.head()
# %% md
# 统计日志表的评论字段出现the的求和值、平均值、标准差
# %%
def get_results(request):
max_depth = request.POST['max_depth']
agg_pri = request.POST.getlist('agg_pri')
agg_pri_customer = request.POST.getlist('agg_pri_customer')
trans_pri_customer = request.POST.getlist('trans_pri_customer')
trans_pri = request.POST.getlist('trans_pri')
context = {'max_depth': max_depth, 'agg_pri': agg_pri, 'trans_pri': trans_pri}
import featuretools as ft
import pandas as pd
import numpy as np
from featuretools.primitives import make_trans_primitive, make_agg_primitive
from featuretools.variable_types import DatetimeTimeIndex, Numeric
pd.set_option('display.max_columns', 20)
data = ft.demo.load_mock_customer()
transactions_df = data["transactions"].merge(data["sessions"]).merge(data["customers"])
products_df = data["products"]
es = ft.EntitySet()
s = es.entity_from_dataframe(entity_id="transactions", dataframe=transactions_df, index="transaction_id",
time_index="transaction_time",
variable_types={"product_id": ft.variable_types.Categorical,
"zip_code": ft.variable_types.ZIPCode})
es = es.entity_from_dataframe(entity_id="products", dataframe=products_df, index="product_id")
new_relationship = ft.Relationship(es["products"]["product_id"], es["transactions"]["product_id"])
es = es.add_relationship(new_relationship)
es = es.normalize_entity(base_entity_id="transactions",
new_entity_id="sessions",
index="session_id",
make_time_index="session_start",
additional_variables=["device", "customer_id", "zip_code", "session_start", "join_date"])
es = es.normalize_entity(base_entity_id="sessions",
new_entity_id="customers",
index="customer_id",
make_time_index="join_date",
additional_variables=["zip_code", "join_date"])
# feature_matrix1, feature_defs1 = ft.dfs(entityset=es, target_entity="products")
#
# feature_matrix2, feature_defs2 = ft.dfs(entityset=es, target_entity="customers", agg_primitives=["count"],
# trans_primitives=["month"], max_depth=1)
"""
自定义agg_primitives:
改写time since last，原函数为秒，现在改为小时输出
"""
def time_since_last_by_hour(values, time=None):
time_since = time - values.iloc[-1]
return time_since.total_seconds() / 3600
Time_since_last_by_hour = make_agg_primitive(function=time_since_last_by_hour,
input_types=[DatetimeTimeIndex],
return_type=Numeric,
uses_calc_time=True)
"""
自定义trans_primitives:
添加log e 的自然对数
"""
import numpy as np
def log(vals):
return np.log(vals)
# def generate_name(self, base_feature_names):
# return "-(%s)" % (base_feature_names[0])
log = make_trans_primitive(function=log,
input_types=[Numeric],
return_type=Numeric,
# uses_calc_time=True,
description="Calculates the log of the value.",
name="log")
# 将前端页面的提交参数，保存为agg_pri列表
agg_pri = context['agg_pri']
trans_pri = context['trans_pri']
# 如果勾选了参数，加上自定义的Time_since_last_by_hour
if 'Time_since_last_by_hour' in agg_pri_customer:
agg_pri.append(Time_since_last_by_hour)
if 'log_e' in trans_pri_customer:
trans_pri.append(log)
# 生成新的特征融合矩阵
feature_matrix3, feature_defs3 = ft.dfs(entityset=es, target_entity="customers",
agg_primitives=agg_pri,
trans_primitives=trans_pri,
max_depth=int(context['max_depth']))
res = []
for i in feature_defs3:
res.append(str(i))
sample_data = [i for i in feature_matrix3.iloc[0]]
return render(request, 'get_results.html', {'res': res, 'sample_data': sample_data})
n_collinear, correlation_threshold))
total_removed = n_missing_cols + n_zero_variance_cols + n_collinear
print('Total columns removed: ', total_removed)
print('Shape after feature selection: {}.'.format(feature_matrix.shape))
return feature_matrix
# before we get into things, let's do all the featuretools definitions
def log_plus_one(column):
return np.log(column + min(column) + 1)
lpo = make_trans_primitive(function=log_plus_one,
input_types=[Numeric],
return_type=Numeric)
def abs_log(column):
return np.log(np.abs(column) + 1)
al = make_trans_primitive(function=abs_log,
input_types=[Numeric],
return_type=Numeric)
def squared(column):
return np.square(column)
print(feature_enc)
print('-----------list primitives---------------------')
print(ft.list_primitives().head())
print('----------custom primitives----------------------')
from featuretools.primitives import make_agg_primitive, make_trans_primitive
from featuretools.variable_types import Text, Numeric
def absolute(column):
return abs(column)
Absolute = make_trans_primitive(function=absolute,
input_types=[Numeric],
return_type=Numeric)
def maximum(columns):
return max(columns)
Maximum = make_agg_primitive(function=maximum,
input_types=[Numeric],
return_type=Numeric)
#Multiple Input Types
def mean_numeric(num1, num2):
return (num1 + num2) / 2
def get_results(request):
try:
import featuretools as ft
import pandas as pd
import numpy as np
from featuretools.primitives import make_trans_primitive, make_agg_primitive
# 数据源相关的参数
types_dict = eval(request.COOKIES['types_dict'])
columns_dict = eval(request.COOKIES['columns_dict'])
target = request.COOKIES['target']
# 如何决定 base entity?
# 目前思路是由 id 类型最多的 entity 来做 base entity
# 把对应的表和id个数封装成字典，然后根据个数给表名排逆序，然后按照这个顺序merge表，是为最终思路
base_entity = ''
base_index = ''
max_count = 0
sorted_dict = {}
for k, v in types_dict.items():
count = 0
index = ''
for i in v:
if '.Id' in str(i):
count += 1
if '.Index' in str(i):
index = i
sorted_dict[k] = count
if count > max_count:
base_entity = k
base_index = index
max_count = count
sorted_list = sorted(sorted_dict.items(),
key=lambda item: item[1],
reverse=True)
sorted_table_name = [i[0] for i in sorted_list]
print("sorted_table_name\n", sorted_table_name)
# 把columns 和对应的 类型拼接成字典，存在一个列表中,并且找到base_index
types_dict_list = []
entity_name_list = []
for key, values1, values2 in zip(columns_dict.keys(),
columns_dict.values(),
types_dict.values()):
types_dict_list.append(
{k: eval(v)
for k, v in zip(values1, values2)})
entity_name_list.append(key)
if key == base_entity:
for k, v in zip(values2, values1):
if '.Index' in k:
base_index = v
# 自动识别标记为Index的特征，并作为抽取实体的index参数，传入模型
# 把所有的类型字典拼成一个大字典
index_list = []
total_type_dict = {}
for each_dict in types_dict_list:
total_type_dict.update(each_dict)
for k, v in each_dict.items():
if '.Index' in str(v):
index_list.append(k)
print(index_list)
# print(total_type_dict)
# 原表全部join在一起之后再抽取实体
# 数据接口改成处理CSV结构
import os
import re
if not os.path.isdir(os.getcwd() + "/demo_data"):
os.mkdir(os.getcwd() + "/demo_data")
os.chdir(os.getcwd() + "/demo_data")
regex = re.compile("csv")
raw_dict = {}
for file in os.listdir(os.getcwd()):
if re.search(regex, file):
raw_dict[file.split(".")[0]] = pd.read_csv(file)
data = raw_dict
os.chdir("..")
# todo : merge的逻辑比较复杂，要如何执行join操作？？
if len(data) == 0:
raise Exception("数据源为空，请检查数据源文件")
elif len(data) > 1:
data_df = data.pop(sorted_table_name.pop(0))
# print(data_df)
for i in sorted_table_name:
data_df = data_df.merge(data[i])
#
# for i in list(data.values()):
# data_df = data_df.merge(i)
elif len(data) == 1:
data_df = list(data.values())[0]
es = ft.EntitySet()
# print("+++++++++++++++++++++++")
# print("data_df\n", data_df)
# print("entity_id\n", base_entity)
# print("base_index\n", base_index)
# print("total_type_dict\n", total_type_dict)
# print("+++++++++++++++++++++++")
# 构造base entity, 将第一个表名作为基础实体名称
es = es.entity_from_dataframe(
entity_id=base_entity,
dataframe=data_df,
index=base_index,
# time_index="transaction_time",
variable_types=total_type_dict)
# 基于base entity抽取实体,逻辑比较复杂，基本逻辑是作为base entity的字段，跳过实体抽取，其余的将index 字段单独存储，设为index参数
for k, v in columns_dict.items():
if k == base_entity:
continue
index = ''
for i in index_list:
if i in v:
v.remove(i)
index = i
# print("=========")
# print(k)
# print(index)
# print(v)
# print("=========")
es = es.normalize_entity(
base_entity_id=base_entity,
new_entity_id=k,
index=index,
# make_time_index="session_start",
additional_variables=v)
"""
自定义agg_primitives:
改写time since last，原函数为秒，现在改为小时输出
"""
def time_since_last_by_hour(values, time=None):
time_since = time - values.iloc[-1]
return time_since.total_seconds() / 3600
Time_since_last_by_hour = make_agg_primitive(
function=time_since_last_by_hour,
input_types=[ft.variable_types.DatetimeTimeIndex],
return_type=ft.variable_types.Numeric,
uses_calc_time=True)
"""
自定义trans_primitives:
添加log e 的自然对数
"""
import numpy as np
def log(vals):
return np.log(vals)
# def generate_name(self, base_feature_names):
# return "-(%s)" % (base_feature_names[0])
log = make_trans_primitive(
function=log,
input_types=[ft.variable_types.Numeric],
return_type=ft.variable_types.Numeric,
# uses_calc_time=True,
description="Calculates the log of the value.",
name="log")
"""
自定义trans_primitives:
判断是否为正数
"""
import numpy as np
def is_positive(vals):
return vals > 0
# def generate_name(self, base_feature_names):
# return "-(%s)" % (base_feature_names[0])
is_positive = make_trans_primitive(
function=is_positive,
input_types=[ft.variable_types.Numeric],
return_type=ft.variable_types.Boolean,
# uses_calc_time=True,
description="Calculates if the value positive.",
name="is_positive")
# 模型相关的参数
max_depth = request.POST['max_depth']
agg_pri = request.POST.getlist('agg_pri')
agg_pri_customer = request.POST.getlist('agg_pri_customer')
trans_pri_customer = request.POST.getlist('trans_pri_customer')
trans_pri = request.POST.getlist('trans_pri')
context = {
'max_depth': max_depth,
'agg_pri': agg_pri,
'trans_pri': trans_pri
}
pd.set_option('display.max_columns', 20)
# 将前端页面的提交参数，保存为agg_pri列表
agg_pri = context['agg_pri']
trans_pri = context['trans_pri']
print(trans_pri_customer)
# 如果勾选了参数，加上自定义的Time_since_last_by_hour
if 'Time_since_last_by_hour' in agg_pri_customer:
agg_pri.append(Time_since_last_by_hour)
if 'log_e' in trans_pri_customer:
trans_pri.append(log)
if 'is_positive' in trans_pri_customer:
trans_pri.append(is_positive)
print("+++++++++++++++++++++++++++++")
print(trans_pri)
print("+++++++++++++++++++++++++++++")
# 生成新的特征融合矩阵
feature_matrix, feature_defs = ft.dfs(entityset=es,
target_entity=target,
agg_primitives=agg_pri,
trans_primitives=trans_pri,
max_depth=int(
context['max_depth']))
# 将索引作为第一列插入数据矩阵
feature_matrix = feature_matrix.reset_index()
new_columns = feature_matrix.columns
# 保存数据矩阵,注意在特征选择界面，没有 customer_id 作为选项，因为这只是索引
# nlp 数组是将primitives替换为中文后的表头，一并显示在第二行
import os
if not os.path.isdir(os.getcwd() + "/demo_data/result"):
os.mkdir(os.getcwd() + "/demo_data/result")
feature_matrix.to_csv("./demo_data/result/all_features.csv",
index=False)
# print(feature_matrix.head(5))
from .columns2NLP import columns2NLP
res = []
nlp = []
for i in new_columns:
res.append(str(i))
nlp.append(columns2NLP(str(i)))
# print(res[0])
# print("======================")
# print(res)
# print(nlp)
# print("======================")
# 将所有的浮点数精度调整到小数点后两位
sample_data1 = [
round(i, 2) if isinstance(i, float) else i
for i in feature_matrix.iloc[0]
]
sample_data2 = [
round(i, 2) if isinstance(i, float) else i
for i in feature_matrix.iloc[1]
]
sample_data3 = [
round(i, 2) if isinstance(i, float) else i
for i in feature_matrix.iloc[2]
]
sample_data4 = [
round(i, 2) if isinstance(i, float) else i
for i in feature_matrix.iloc[3]
]
sample_data5 = [
round(i, 2) if isinstance(i, float) else i
for i in feature_matrix.iloc[4]
]
response = render(
request, 'get_results.html', {
'res': res,
'nlp': nlp,
'sample_data1': sample_data1,
'sample_data2': sample_data2,
'sample_data3': sample_data3,
'sample_data4': sample_data4,
'sample_data5': sample_data5
})
response.set_cookie('target_id', res[0])
return response
except Exception as e:
response = render(request, 'erro.html', {'erro': e})
return response
# finally let's import the data
df = pd.read_csv("creditcard.csv")
df = df.drop(
['Time'], axis=1
) #,'V28','V27','V26','V25','V24','V23','V22','V20','V15','V13','V8'], axis =1)
df = df.dropna()
# before we get into things, let's do all the featuretools definitions
def abs_log(column):
return np.log(np.abs(column) + 1)
al = make_trans_primitive(function=abs_log,
input_types=[Numeric],
return_type=Numeric)
def squared(column):
return np.square(column)
sq = make_trans_primitive(function=squared,
input_types=[Numeric],
return_type=Numeric)
def bins_5(column):
temp = preprocessing.KBinsDiscretizer(n_bins=5,
encode='ordinal',
# %%
# custom function so the name of the feature prints out correctly
def make_name(self):
return "%s_goal_last_%d" % (self.kwargs['Qty1'], self.kwargs['Qty2'])
# %%
# %%
def compare_Qty(Qty1,Qty2):
return Qty1>Qty2
CompareMove = make_trans_primitive(function=compare_Qty,
input_types=[Numeric, Numeric],
return_type=Boolean,
description="compare_Qty"
#cls_attributes={"generate_name": make_name, "uses_full_entity":True}
)
input_vars = [es["Machine"]["MOVE_QTY"], es["Machine"]["WIP_QTY"]]
# Compare_Move = CompareMove(*input_vars)
# #Compare_Move = CompareMove(Qty1=es["Machine"]["MOVE_QTY"], Qty2=es["Machine"]["WIP_QTY"])
# features = [Compare_Move]
# fm = ft.calculate_feature_matrix(entityset=es, features=features)
自定义trans_primitives:
添加log e 的自然对数
"""
import numpy as np
def log(vals):
return np.log(vals)
# def generate_name(self, base_feature_names):
# return "-(%s)" % (base_feature_names[0])
log = make_trans_primitive(
function=log,
input_types=[Numeric],
return_type=Numeric,
# uses_calc_time=True,
description="Calculates the log of the value.",
name="log")
# 生成新的特征融合矩阵
feature_matrix3, feature_defs3 = ft.dfs(
entityset=es,
target_entity="customers",
agg_primitives=['count', 'mean', 'sum', 'min', 'max'],
trans_primitives=['month'],
max_depth=3)
print(feature_matrix3)
# 将索引作为第一列插入数据矩阵
feature_matrix3 = feature_matrix3.reset_index()
自定义trans_primitives:
添加log e 的自然对数
"""
import numpy as np
def log(vals):
return np.log(vals)
# def generate_name(self, base_feature_names):
# return "-(%s)" % (base_feature_names[0])
log = make_trans_primitive(
function=log,
input_types=[ft.variable_types.Numeric],
return_type=ft.variable_types.Numeric,
# uses_calc_time=True,
description="Calculates the log of the value.",
name="log")
"""
自定义trans_primitives:
判断是否为正数
"""
import numpy as np
def is_positive(vals):
return vals > 0
# def generate_name(self, base_feature_names):
