def model_process(dataset=dataset):
algscore = request.form.get('model')
res = request.form.get('response')
kfold = request.form.get('kfold')
alg, score = algscore.split('.')
scaling = request.form.get('scaling')
variables = request.form.getlist('variables')
from sklearn.model_selection import cross_validate
from sklearn.preprocessing import StandardScaler
from sklearn.pipeline import Pipeline
df = loadDataset(dataset)
y = df[str(res)]
if variables != [] and '' not in variables:
df = df[list(set(variables + [res]))]
X = df.drop(str(res), axis=1)
try:
X = pd.get_dummies(X)
except:
pass
predictors = X.columns
if len(predictors) > 10: pred = str(len(predictors))
else: pred = ', '.join(predictors)
if score == 'Classification':
from sklearn.metrics import precision_score, recall_score, f1_score, accuracy_score, roc_curve, auc
scoring = ['precision', 'recall', 'f1', 'accuracy', 'roc_auc']
if scaling == 'Yes':
clf = algorithms.classificationModels()[alg]
mod = Pipeline([('scaler', StandardScaler()), ('clf', clf)])
else:
mod = algorithms.classificationModels()[alg]
fig = plotfun.plot_ROC(X.values, y, mod, int(kfold))
elif score == 'Regression':
from sklearn.metrics import explained_variance_score, r2_score, mean_squared_error
scoring = ['explained_variance', 'r2', 'mean_squared_error']
if scaling == 'Yes':
pr = algorithms.regressionModels()[alg]
mod = Pipeline([('scaler', StandardScaler()), ('clf', pr)])
else:
mod = algorithms.regressionModels()[alg]
fig = plotfun.plot_predVSreal(X, y, mod, int(kfold))
scores = cross_validate(mod, X, y, cv=int(kfold), scoring=scoring)
for s in scores:
scores[s] = str(round(np.mean(scores[s]), 3))
return render_template('scores.html',
scores=scores,
dataset=dataset,
alg=alg,
res=res,
kfold=kfold,
score=score,
predictors=pred,
response=str(fig, 'utf-8'))
def predict(dataset=dataset):
columns = loadColumns(dataset)
clfmodels = algorithms.classificationModels()
predmodels = algorithms.regressionModels()
return render_template('predict.html',
dataset=dataset,
clfmodels=clfmodels,
predmodels=predmodels,
columns=columns)
def predict_process(dataset=dataset):
algscore = request.form.get('model')
res = request.form.get('response')
alg, score = algscore.split('.')
scaling = request.form.get('scaling')
df = loadDataset(dataset)
columns = df.columns
values = {}
counter = 0
for col in columns:
values[col] = request.form.get(col)
if values[col] != '' and col != res: counter += 1
if counter == 0: return redirect('/datasets/' + dataset + '/predict')
predictors = {}
for v in values:
if values[v] != '':
try:
predictors[v] = [float(values[v])]
except:
predictors[v] = [values[v]]
from sklearn.preprocessing import StandardScaler
X = df[list(predictors.keys())]
Xpred = predictors
#return str(Xpred)
Xpred = pd.DataFrame(data=Xpred)
X = pd.concat([X, Xpred])
X = pd.get_dummies(X)
Xpred = X.iloc[[-1]]
X = X[:-1]
if scaling == 'Yes':
scaler = StandardScaler()
X = pd.DataFrame(scaler.fit_transform(X), columns=X.columns)
Xpred = pd.DataFrame(scaler.transform(Xpred), columns=X.columns)
try:
X = X.drop(str(res), axis=1)
Xpred = Xpred.drop(str(res), axis=1)
except:
pass
#Xpred.reset_index(drop=True, inplace=True)
#X.reset_index(drop=True, inplace=True)
y = df[str(res)]
if score == 'Classification':
mod = algorithms.classificationModels()[alg]
elif score == 'Regression':
mod = algorithms.regressionModels()[alg]
model = mod.fit(X, y)
#return pd.DataFrame(Xpred).to_html()
predictions = {}
predictions['Prediction'] = model.predict(Xpred)[0]
predictors.pop(res, None)
for p in predictors:
if str(predictors[p][0]).isdigit() is True:
predictors[p] = int(predictors[p][0])
else:
try:
predictors[p] = round(predictors[p][0], 2)
except:
predictors[p] = predictors[p][0]
for p in predictions:
if str(predictions[p]).isdigit() is True:
predictions[p] = int(predictions[p])
else:
try:
predictions[p] = round(predictions[p], 2)
except:
continue
if len(predictors) > 15:
predictors = {'Number of predictors': len(predictors)}
#return str(predictors) + res + str(predictions) + alg + score
if score == 'Classification':
classes = model.classes_
pred_proba = model.predict_proba(Xpred)
for i in range(len(classes)):
predictions['Prob. ' + str(classes[i])] = round(
pred_proba[0][i], 3)
return render_template('prediction.html',
predictions=predictions,
response=res,
predictors=predictors,
algorithm=alg,
score=score,
dataset=dataset)
