def random():
start = time.time()
qry = db_session.query(dropdown_table_new)
df2 = pd.read_sql(qry.statement, qry.session.bind)
list2=[]
# get (prod_subfamily,[all unique prod_name])
for x in df2['prod_subfamily'].unique():
temp=df2[df2['prod_subfamily']==x]['prod_name'].unique()
list2.append((x, temp))
# df2=df[['CAT1','modele_intitule']].drop_duplicates()
# df3=df[['CAT1','sous_famille_intitule','modele_intitule']].drop_duplicates()
# get all unique prod_subfamily for each distinct CAT1 and prod_family
df4=df2.sort_values(by=['prod_family'])
df4=df4.groupby(['CAT1','prod_family'])['prod_subfamily'].unique().apply(list).reset_index()
# get random customer id
client_id = recommender.random_client_id()
df_reco_models = recommender.recommend1(client_id )
#recommended_model_ids = recommendations['model_id'].unique()
#df_reco_models = recommender.get_model_ids(recommended_model_ids)
if len(df_reco_models[df_reco_models['category1'].isin(['L','D','B'])]['CAT1'].unique()) == 3:
df_reco_models=df_reco_models[df_reco_models['category1'].isin(['L','D','B'])]
df_reco_models.sort_values('category1', ascending=False, inplace=True)
df_reco_models.reset_index(inplace=True)
else:
df_reco_models=df_reco_models[df_reco_models['category1'].isin(['L','D','B', 'A'])]
df_reco_models.sort_values('category1', ascending=False, inplace=True)
df_reco_models.reset_index(inplace=True)
recomm_df=df_reco_models.groupby('CAT1').head(1)
df_history = recommender.get_history(client_id)
prod_list = []
for row in recomm_df.itertuples():
prod_list.append(getattr(row, 'prod_name'))
columns= [
('transaction_date', 'ORDER DATE'),
('prod_family', 'FAMILY'),
('prod_subfamily', 'SUB-FAMILY'),
('prod_name', 'MODEL'),
('model_id', 'MODEL ID'),
('transaction_id', 'ORDER #')
]
end = time.time()
print("********************************running time: "+ str(end-start))
return render_template('reco.html',
client_id=client_id,
history_df=df_history,
history_columns=columns,
#recommendations=pformat(recommendations),
#recomm_df=df_reco_models.groupby('CAT1').head(1),
#recomm_df=df_reco_models,
recomm_df=recomm_df,
df2=df2, list2=list2, df4=df4,prod=prod_list)
def loadData(self):
qry = db_session.query(purchases)
df = pd.read_sql(qry.statement, qry.session.bind)
# remove records whose prod_name contains 'spare' or 'service'
df['transaction_date'] = pd.to_datetime(df['transaction_date'])
df = df[df['prod_name'].str.lower().str.contains('spare') == False]
df = df[df['prod_name'].str.lower().str.contains('service') == False]
#convert data type
df['cont_id'] = df['cont_id'].astype(str)
#sort by customer_id and transaction date
df = df.sort_values(by=['cont_id', 'transaction_date'])
self.df_with_inputs = df
df_without_inputs = df[(df['transaction_id'] != 'suggestion')]
self.df_without_inputs = df_without_inputs
return df_without_inputs
def get_history(self, client_id):
# get records given a client id
qry = db_session.query(purchases)
df = pd.read_sql(qry.statement, qry.session.bind)
df['transaction_date'] = pd.to_datetime(df['transaction_date'])
df=df[df['prod_name'].str.lower().str.contains('spare')==False]
df=df[df['prod_name'].str.lower().str.contains('service')==False]
#convert data type
df['cont_id'] = df['cont_id'].astype(str)
df=df.sort_values(by=['cont_id','transaction_date'])
# update the df since users could insert a new record
df['qty']=df.groupby(['cont_id','prod_name'])['prod_name'].transform('size')
self.df = df
return self.df[self.df['cont_id'] == client_id]
def suggestion():
start = time.time()
qry = db_session.query(dropdown_table_new)
df2 = pd.read_sql(qry.statement, qry.session.bind)
list2 = []
for x in df2['prod_subfamily'].unique():
temp = df2[df2['prod_subfamily'] == x]['prod_name'].unique()
list2.append((x, temp))
df4 = df2.sort_values(by=['prod_family'])
df4 = df4.groupby(['CAT1', 'prod_family'
])['prod_subfamily'].unique().apply(list).reset_index()
client_id = request.args['query']
df_reco_models = recommender.recommend1(client_id)
if len(df_reco_models[df_reco_models['category1'].isin(
['L', 'D', 'B'])]['CAT1'].unique()) == 3:
df_reco_models = df_reco_models[df_reco_models['category1'].isin(
['L', 'D', 'B'])]
else:
df_reco_models = df_reco_models[df_reco_models['category1'].isin(
['L', 'D', 'B', 'A'])]
#get purchasing history
df_history = recommender.get_history(client_id)
recomm_df = df_reco_models.groupby('CAT1').head(1)
# get recommendation list
prod_list = []
for row in recomm_df.itertuples():
prod_list.append(getattr(row, 'prod_name'))
columns = [('transaction_date', 'ORDER DATE'), ('prod_family', 'FAMILY'),
('prod_subfamily', 'SUB-FAMILY'), ('prod_name', 'MODEL'),
('model_id', 'MODEL ID'), ('transaction_id', 'ORDER #')]
end = time.time()
print("********************************running time: " + str(end - start))
return render_template(
'reco.html',
client_id=client_id,
history_df=df_history,
history_columns=columns,
#recommendations=pformat(recommendations),
#recomm_df=df_reco_models,
recomm_df=df_reco_models.groupby('CAT1').head(1),
df2=df2,
list2=list2,
df4=df4,
prod=prod_list)
def suggestion():
qry = db_session.query(dropdown_table_new)
df2 = pd.read_sql(qry.statement, qry.session.bind)
list2=[]
for x in df2['prod_subfamily'].unique():
temp=df2[df2['prod_subfamily']==x]['prod_name'].unique()
list2.append((x, temp))
# df2=df[['CAT1','modele_intitule']].drop_duplicates()
# df3=df[['CAT1','sous_famille_intitule','modele_intitule']].drop_duplicates()
df4=df2.sort_values(by=['prod_family'])
df4=df4.groupby(['CAT1','prod_family'])['prod_subfamily'].unique().apply(list).reset_index()
client_id=request.args['query']
df_reco_models = recommender.recommend1(client_id)
# recommended_model_ids = recommendations['model_id'].unique()
# df_reco_models=recommendations
#df_reco_models = recommender.get_model_ids(recommended_model_ids)
if len(df_reco_models[df_reco_models['category1'].isin(['L','D','B'])]['CAT1'].unique()) == 3:
df_reco_models=df_reco_models[df_reco_models['category1'].isin(['L','D','B'])]
else:
df_reco_models=df_reco_models[df_reco_models['category1'].isin(['L','D','B', 'A'])]
df_history = recommender.get_history(client_id)
prod_list = []
recomm_df = df_reco_models.groupby('CAT1').head(1)
for row in recomm_df.itertuples():
prod_list.append(getattr(row, 'prod_name'))
columns= [
('transaction_date', 'ORDER DATE'),
('prod_family', 'FAMILY'),
('prod_subfamily', 'SUB-FAMILY'),
('prod_name', 'MODEL'),
('model_id', 'MODEL ID'),
('transaction_id', 'ORDER #')
]
return render_template('reco.html',
client_id=client_id,
history_df=df_history,
history_columns=columns,
#recommendations=pformat(recommendations),
#recomm_df=df_reco_models,
recomm_df=recomm_df,
df2=df2, list2=list2, df4=df4,prod=prod_list
)
def update_model1(self):
qry = db_session.query(purchases)
df = pd.read_sql(qry.statement, qry.session.bind)
# remove records whose prod_name contains 'spare' or 'service'
df['transaction_date'] = pd.to_datetime(df['transaction_date'])
df=df[df['prod_name'].str.lower().str.contains('spare')==False]
df=df[df['prod_name'].str.lower().str.contains('service')==False]
#convert data type
df['cont_id'] = df['cont_id'].astype(str)
df=df.sort_values(by=['cont_id','transaction_date'])
df['qty']=df.groupby(['cont_id','prod_name'])['prod_name'].transform('size')
ndf=df.groupby(['cont_id','prod_name'])['qty'].sum().reset_index()
# get all candidates products
items = ndf.pivot(index = 'prod_name', columns = 'cont_id', values = 'qty').fillna(0)
# compress sparse row marix
item_rows=csr_matrix(items.values)
# build model
model_knn = NearestNeighbors(metric = 'cosine', algorithm = 'brute')
# train model
model_knn.fit(item_rows)
self.model_knn1 = model_knn
def __init__(self):
# get the inbox_table
qry = db_session.query(purchases)
df = pd.read_sql(qry.statement, qry.session.bind)
# remove records whose prod_name contains 'spare' or 'service'
df['transaction_date'] = pd.to_datetime(df['transaction_date'])
df=df[df['prod_name'].str.lower().str.contains('spare')==False]
df=df[df['prod_name'].str.lower().str.contains('service')==False]
#convert data type
df['cont_id'] = df['cont_id'].astype(str)
df=df[(df['transaction_id']!='suggestion')]
df=df.sort_values(by=['cont_id','transaction_date'])
# get all customers
self.client_ids = list(set(list(df['cont_id'])))
# get customers in testing dataset
self.client_ids = list(set(list(df['cont_id'])))
df['qty']=df.groupby(['cont_id','prod_name'])['prod_name'].transform('size')
self.df = df
ndf=df.groupby(['cont_id','prod_name'])['qty'].sum().reset_index()
self.ndf=ndf
self.split_data()
# get all candidates products
items = ndf.pivot(index = 'prod_name', columns = 'cont_id', values = 'qty').fillna(0)
self.items=items
# compress sparse row marix
item_rows=csr_matrix(items.values)
self.item_rows=item_rows
# build model
model_knn = NearestNeighbors(metric = 'cosine', algorithm = 'brute')
# train model
model_knn.fit(item_rows)
self.model_knn2 = model_knn
self.update_model1()
