def fit():
req = request.get_json()
neighburs = 2
if ("params" in req):
neighbours = req["params"]["neighbours"]
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["filename"]
if (user_id == None or project_id == None or filename == None):
return apierrors.NoData()
else:
return apierrors.NoData()
fullPath = user_id + "/" + project_id + "/" + filename
dataset = read_file(fullPath)
clf = LocalOutlierFactor(n_neighbors=int(neighbours))
rawX = pd.read_csv(StringIO(dataset.decode('utf-8')))
X = preProcess(dataset=rawX)
y_pred = clf.fit_predict(X)
y_pred_outliers = y_pred
s = pickle.dumps(clf)
write_file(user_id, project_id, "pickle.pkl", s)
resultObj = {
"dataset": json.loads(rawX.to_json()),
"labels": json.loads(pd.DataFrame(y_pred_outliers).to_json()),
}
return json.dumps(resultObj)
def fit():
req = request.get_json()
neighburs = 2
algorithm = "ball_tree"
metric = "euclidean"
if ("params" in req):
if("neighbours" in req["params"]): neighburs = req["params"]["neighbours"]
if("algorithm" in req["params"]): algorithm = req["params"]["algorithm"]
if("metric" in req["params"]): metric = req["params"]["metric"]
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["filename"]
if (user_id == None or project_id == None or filename == None): return apierrors.NoData()
else:
return apierrors.NoData();
fullPath = user_id + "/" + project_id + "/" + filename
dataset = read_file(fullPath)
rawX = pd.read_csv(StringIO(dataset.decode('utf-8')))
X = preProcess(dataset=rawX)
print(X)
print(neighburs,algorithm,metric)
NN = NearestNeighbors(n_neighbors=int(neighburs), algorithm=algorithm, metric=metric)
s = pickle.dumps(NN)
write_file(user_id, project_id, "pickle.pkl", s)
nbrs = NN.fit(X)
distances, indices = nbrs.kneighbors(X)
data = rawX.to_json()
indexes = pd.DataFrame(indices).to_json()
return '{ "dataset": ' + data + ', "indexes": '+indexes+', "distances": '+ pd.DataFrame(distances).to_json() +'}'
def predict():
req=request.get_json()
if ("params" in req):
data = req["params"]["data"]
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["filename"]
if (user_id == None or project_id == None or filename == None): return apierrors.NoData()
else:
return apierrors.NoData();
P = Projects(user_id, project_id)
project = P.read(id=project_id)
P.addDataset(data)
dataset = P.getDataset()
# reshape the dataset to a dataframe like object
X = {}
if(type(dataset[0]["data"]) == str): dataset[0]["data"] = json.loads(dataset[0]["data"])
for k in dataset[0]["data"]:
X[k] = []
for i in dataset:
if(i["data"]=="data"): continue
if(type(i["data"]) == str): obj=json.loads(i["data"])
else: obj=json.loads(json.dumps(i["data"]))
for k in obj:
X[k].append(obj[k])
# convert the array to pandas dataframe
rawX = pd.DataFrame(X)
X = preProcess(dataset=rawX)
pkl_file = get_pickle(user_id + "/"+project_id+"/pickle.pkl")
if(pkl_file==None): return apierrors.ErrorMessage("No pickle file found, maybe you should train the model first")
model = pickle.load(pkl_file)
nbrs = model.fit(X)
distances, indices = nbrs.kneighbors(X)
obj = [X[0]]
# for i in X[0]:
# print(i)
# obj.append([i])
data = rawX.to_json()
indexes = pd.DataFrame(indices).to_json()
print(nbrs.kneighbors(obj))
return '{ "data": ' + data + ', "indexes": '+indexes+'}'
def fit():
req = request.get_json()
eps = 0.7
min_samples = 4
if ("params" in req):
eps = float(req["params"]["eps"])
min_samples = float(req["params"]["min"])
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["filename"]
if (user_id == None or project_id == None or filename == None):
return apierrors.NoData()
if "max" in req:
max_samples = req["params"]["max"]
else:
return apierrors.NoData()
fullPath = user_id + "/" + project_id + "/" + filename
dataset = read_file(fullPath)
if (dataset == None): return apierrors.ErrorMessage("dataset not found")
rawX = pd.read_csv(StringIO(dataset.decode('utf-8')))
X = preProcess(dataset=rawX)
print(type(X[0][0]))
DB = DBSCAN(eps, min_samples)
s = pickle.dumps(DB)
write_file(user_id, project_id, "pickle.pkl", s)
db = DB.fit(X)
print("ok")
core_samples_mask = np.zeros_like(db.labels_, dtype=bool)
core_samples_mask[db.core_sample_indices_] = True
labels = db.labels_
n_clusters_ = len(set(labels)) - (1 if -1 in labels else 0)
resultObj = {
"clusters": n_clusters_,
"dataset": json.loads(rawX.to_json()),
"labels": json.loads(pd.DataFrame(labels).to_json())
}
# resultObj = {}
return json.dumps(resultObj)
def fit():
req = request.get_json()
dimensions = 2
if ("params" in req):
dimensions = req["params"]["dimensions"]
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["filename"]
if (user_id == None or project_id == None or filename == None):
return apierrors.NoData()
else:
return apierrors.NoData()
fullPath = user_id + "/" + project_id + "/" + filename
dataset = read_file(fullPath)
if (dataset == None): return apierrors.ErrorMessage("dataset not found")
pca = PCA(n_components=dimensions)
transformed = pca.fit_transform(dataset)
resultObj = {"original": dataset, "transformed": transformed}
# resultObj = {}
return json.dumps(resultObj)
def fit():
nu=0.3
kernel="rbf"
gamma=0.1
degree=3
coef0=0.0
tol=0.001
shrinking=True
req = request.get_json()
if "params" in req:
if("nu" in req["params"]): nu = req["params"]["nu"]
if("kernel" in req["params"]): kernel = req["params"]["kernel"]
if("gamma" in req["params"]): gamma = req["params"]["gamma"]
if("degree" in req["params"]): degree = req["params"]["degree"]
if("coef0" in req["params"]): coef0 = req["params"]["coef0"]
if("tol" in req["params"]): tol = req["params"]["tol"]
if("shrinking" in req["params"]): shrinking = req["params"]["shrinking"]
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["filename"]
else:
return apierrors.NoData()
print("start")
fullPath = user_id + "/"+project_id+"/" + filename
print(fullPath)
dataset = read_file(fullPath)
print(dataset)
if(dataset==None): return apierrors.ErrorMessage("dataset not found")
rawX = pd.read_csv(StringIO(dataset.decode('utf-8')))
X = preProcess(dataset=rawX)
X_train = X[0:int(len(X) * 0.66)]
print(nu,kernel,gamma)
# fit the model
clf = svm.OneClassSVM(degree=int(degree), coef0=float(coef0),tol=float(tol),shrinking=bool(shrinking), nu=float(nu), kernel=kernel, gamma=float(gamma))
clf.fit(X_train)
y_pred_train = clf.predict(X_train)
y_pred_test = clf.predict(X)
n_error_train = y_pred_train[y_pred_train == -1].size
n_error_test = y_pred_test[y_pred_test == -1].size
s = pickle.dumps(clf)
write_file(user_id, project_id, "pickle.pkl", s)
return json.dumps({
"dataset": json.loads(rawX.to_json()),
"labels": y_pred_test.tolist()
})
def predict():
req = request.get_json()
if "params" in req:
data = req["params"]["data"]
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["filename"]
else:
return apierrors.NoData()
print("start")
P = Projects(user_id, project_id)
project = P.read(id=project_id)
P.addDataset(data)
dataset = P.getDataset()
# reshape the dataset to a dataframe like object
X = {}
if(type(dataset[0]["data"]) == str): dataset[0]["data"] = json.loads(dataset[0]["data"])
for k in dataset[0]["data"]:
X[k] = []
for i in dataset:
if(type(i["data"]) == str): obj=json.loads(i["data"])
else: obj=json.loads(json.dumps(i["data"]))
for k in obj:
X[k].append(obj[k])
# convert the array to pandas dataframe
rawX = pd.DataFrame(X)
X = preProcess(dataset=rawX)
pkl_file = get_pickle(user_id + "/"+project_id+"/pickle.pkl")
if(pkl_file==None): return apierrors.ErrorMessage("No pickle file found, maybe you should train the model first")
model = pickle.load(pkl_file)
obj = [X[0]]
labels = pd.DataFrame(model.predict(X)).to_json()
return json.dumps({
"dataset": json.loads(rawX.to_json()),
"labels": json.loads(labels)
})
def fit():
req = request.get_json()
if ("params" in req):
eps = req["params"]["eps"]
min_samples = req["params"]["min"]
user_id = req["params"]["user_id"]
project_id = req["params"]["project_id"]
filename = req["params"]["project_id"]
if (user_id == None or project_id == None or filename == None):
return apierrors.NoData()
if "max" in req:
max_samples = req["params"]["max"]
else:
return apierrors.NoData()
fullPath = user_id + "/" + project_id + "/" + filename
dataset = read_file(fullPath)
if (dataset == None): return apierrors.ErrorMessage("dataset not found")
le = preprocessing.LabelEncoder()
y = pd.read_csv(StringIO(dataset.decode('utf-8')))
y = y.fillna(y.bfill())
p = d = q = range(0, 2)
# Generate all different combinations of p, q and q triplets
pdq = list(itertools.product(p, d, q))
# Generate all different combinations of seasonal p, q and q triplets
seasonal_pdq = [(x[0], x[1], x[2], 12)
for x in list(itertools.product(p, d, q))]
#test all different combinations of p d q parameters
warnings.filterwarnings("ignore") # specify to ignore warning messages
pdqparams = []
for param in pdq:
for param_seasonal in seasonal_pdq:
try:
mod = sm.tsa.statespace.SARIMAX(
y,
order=param,
seasonal_order=param_seasonal,
enforce_stationarity=False,
enforce_invertibility=False)
results = mod.fit()
pdqparams.append([param, param_seasonal, results.aic])
except:
continue
for i in pdqparams:
if(minval == None): minval = i[2]
if (i[2] < minval):
minval = i[2]
minparams = i
mod = sm.tsa.statespace.SARIMAX(y,
order=minparams[0],
seasonal_order= minparams[1],
enforce_stationarity=False,
enforce_invertibility=False)
results = mod.fit()
s = pickle.dumps(mod)
write_file(user_id, project_id, "pickle.pkl", s)
return ""