def generate_result():
train_path = '/tcdata/hy_round2_train_20200225'
test_path = '/tcdata/hy_round2_testB_20200312'
train_df_list = []
for file_name in os.listdir(train_path):
if file_name.endswith('.csv'):
df = pd.read_csv(os.path.join(train_path, file_name))
train_df_list.append(df)
test_df_list = []
for file_name in os.listdir(test_path):
if file_name.endswith('.csv'):
df = pd.read_csv(os.path.join(test_path, file_name))
test_df_list.append(df)
train_df = pd.concat(train_df_list)
test_df = pd.concat(test_df_list)
train_df['time'] = pd.to_datetime(train_df['time'], format='%m%d %H:%M:%S')
test_df['time'] = pd.to_datetime(test_df['time'], format='%m%d %H:%M:%S')
all_df = pd.concat([train_df, test_df])
X = []
y = []
id_list = []
for ship_id, group in all_df.groupby('渔船ID'):
X.append(group[['lat', 'lon', '速度', '方向', 'time']])
y.append(group['type'].values[0])
id_list.append(ship_id)
print(len(id_list))
pype = Pype([('segment', SegmentX(width=72, overlap=0.0))])
pype = pype.fit(X, y)
shape_list = []
df_list = []
for ship_id, group in all_df.groupby('渔船ID'):
sample = group[['lat', 'lon', '速度', '方向', 'time']].values
transform_result = pype.transform([sample])[0]
if transform_result.shape[0] == 0:
seg_df = pd.DataFrame(sample,
columns=['lat', 'lon', '速度', '方向', 'time'])
seg_df['渔船ID'] = len(df_list)
seg_df['type'] = group['type'].values[0]
df_list.append(seg_df)
shape_list.append(1)
else:
for seg in transform_result:
seg_df = pd.DataFrame(
seg, columns=['lat', 'lon', '速度', '方向', 'time'])
seg_df['渔船ID'] = len(df_list)
seg_df['type'] = group['type'].values[0]
df_list.append(seg_df)
shape_list.append(transform_result.shape[0])
new_all_df = pd.concat(df_list, sort=False)
new_all_df.to_csv('help.csv', index=False)
new_all_df = pd.read_csv('help.csv')
df = new_all_df.drop(columns=['type'])
extracted_df = extract_features(df,
column_id='渔船ID',
column_sort='time',
n_jobs=8,
kind_to_fc_parameters=fc_parameters_v2)
new_df = new_all_df.groupby('渔船ID').agg(x_min=('lat', 'min'),
x_max=('lat', 'max'),
y_min=('lon', 'min'),
y_max=('lon', 'max'))
extracted_df['x_max-x_min'] = new_df['x_max'] - new_df['x_min']
extracted_df['y_max-y_min'] = new_df['y_max'] - new_df['y_min']
extracted_df['x_max-y_min'] = new_df['x_max'] - new_df['y_min']
extracted_df['y_max-x_min'] = new_df['y_max'] - new_df['x_min']
extracted_df['slope'] = extracted_df['y_max-y_min'] / np.where(
extracted_df['x_max-x_min'] == 0, 0.001, extracted_df['x_max-x_min'])
extracted_df[
'area'] = extracted_df['x_max-x_min'] * extracted_df['y_max-y_min']
def get_feature(arr):
feature = [
np.max(arr),
np.quantile(arr, 0.9),
np.quantile(arr, 0.1),
np.quantile(arr, 0.75),
np.quantile(arr, 0.25),
np.mean(arr),
np.std(arr),
np.median(arr),
np.std(arr) / np.mean(arr)
]
feature.append(np.corrcoef(np.array([arr[:-1], arr[1:]]))[0, 1])
feature.append(skew(arr))
feature.append(kurtosis(arr))
return feature
features = []
for _, group in new_all_df.groupby('渔船ID'):
group = group.sort_values(by=['time'])
lat = group['lat'].values
lon = group['lon'].values
time_ = pd.to_datetime(group['time'],
format='%Y-%m-%d %H:%M:%S').values
dire = group['方向'].values
speed_list = []
for i in range(lat.shape[0]):
if i == 0:
continue
hour = (time_[i] - time_[i - 1]) / np.timedelta64(1, 'h')
dist = geodesic((lat[i - 1], lon[i - 1]), (lat[i], lon[i]))
speed_list.append(dist.km / hour)
c = np.sum(np.cos(dire / 180 * np.pi)) / group.shape[0]
s = np.sum(np.sin(dire / 180 * np.pi)) / group.shape[0]
r = np.sqrt(c**2 + s**2)
theta = np.arctan(s / c)
angle_feature = [r, theta, np.sqrt(-2 * np.log(r))]
turn_list = []
for i in range(dire.shape[0]):
if i == 0:
continue
turn = 1 - np.cos(dire[i - 1] / 180 * np.pi -
dire[i] / 180 * np.pi)
turn_list.append(turn * np.pi)
turn_list = np.array(turn_list)
c = np.sum(np.cos(turn_list)) / (group.shape[0] - 1)
s = np.sum(np.sin(turn_list)) / (group.shape[0] - 1)
r = np.sqrt(c**2 + s**2)
theta = np.arctan(s / c)
turn_feature = [r, theta, np.sqrt(-2 * np.log(r))]
features.append(
np.concatenate(
[get_feature(speed_list), angle_feature[:1],
turn_feature[:1]]))
extracted_df_ = pd.concat([pd.DataFrame(np.array(features)), extracted_df],
axis=1)
y = []
for _, group in new_all_df.groupby('渔船ID'):
y.append(group.iloc[0]['type'])
train_df = extracted_df_.iloc[:np.sum(shape_list[:len(train_df_list)])]
test_df = extracted_df_.iloc[np.sum(shape_list[:len(train_df_list)]):]
y_train = y[:train_df.shape[0]]
le = preprocessing.LabelEncoder()
y_train = le.fit_transform(y_train)
train_df['type'] = le.inverse_transform(y_train)
train_df.to_csv('./train.csv')
test_df.to_csv('./test.csv')
train_df = pd.read_csv('./train.csv', index_col=0)
X_train = train_df.drop(columns=['type']).values
y_train = train_df['type'].values
test_df = pd.read_csv('./test.csv', index_col=0)
X_test = test_df.values
from sklearn.impute import SimpleImputer
imputer = SimpleImputer(missing_values=np.nan, strategy='mean')
X_train = imputer.fit_transform(
pd.DataFrame(X_train).replace([np.inf, -np.inf], np.nan).values)
X_test = imputer.fit_transform(
pd.DataFrame(X_test).replace([np.inf, -np.inf], np.nan).values)
le = preprocessing.LabelEncoder()
y_train = le.fit_transform(y_train)
def get_model():
exported_pipeline = make_pipeline(
SelectPercentile(score_func=f_classif, percentile=48),
StackingEstimator(
estimator=SGDClassifier(alpha=0.01,
eta0=0.01,
fit_intercept=False,
l1_ratio=0.25,
learning_rate="invscaling",
loss="modified_huber",
penalty="elasticnet",
power_t=10.0)),
ExtraTreesClassifier(bootstrap=False,
criterion="entropy",
max_features=0.6000000000000001,
min_samples_leaf=1,
min_samples_split=3,
n_estimators=100))
set_param_recursive(exported_pipeline.steps, 'random_state', 42)
return exported_pipeline
def get_model_v2():
exported_pipeline = make_pipeline(
make_union(
make_pipeline(
make_union(FunctionTransformer(copy),
FunctionTransformer(copy)),
SelectPercentile(score_func=f_classif, percentile=18)),
FunctionTransformer(copy)),
StackingEstimator(estimator=SGDClassifier(alpha=0.01,
eta0=0.1,
fit_intercept=False,
l1_ratio=1.0,
learning_rate="constant",
loss="hinge",
penalty="elasticnet",
power_t=0.1)),
VarianceThreshold(threshold=0.05),
ExtraTreesClassifier(bootstrap=False,
criterion="entropy",
max_features=0.55,
min_samples_leaf=1,
min_samples_split=4,
n_estimators=100))
set_param_recursive(exported_pipeline.steps, 'random_state', 42)
return exported_pipeline
def get_data(shape_idx):
start_idx = int(np.sum(shape_list[:shape_idx]))
end_idx = start_idx + shape_list[shape_idx]
if shape_idx < len(train_df_list):
return X_train[start_idx:end_idx], y_train[start_idx:end_idx]
else:
return X_test[start_idx:end_idx], None
kf = KFold(n_splits=5, random_state=2019, shuffle=True)
model_v1_list = []
score_v1_list = []
for train_index, test_index in kf.split(shape_list[:len(train_df_list)]):
train_data = []
y_data = []
for idx in train_index:
data = get_data(idx)
train_data.append(data[0])
y_data.append(data[1])
train_data = np.concatenate(train_data, axis=0)
y_data = np.concatenate(y_data, axis=0)
model_v1 = get_model()
model_v1.fit(train_data, y_data)
model_v1_list.append(model_v1)
y_true = []
y_pred = []
for idx in test_index:
data = get_data(idx)
proba = model_v1.predict_proba(data[0])
pred = np.argmax(np.sum(proba, axis=0) / proba.shape[0])
y_pred.append(pred)
y_true.append(data[1][0])
score = f1_score(y_pred, y_true, average='macro')
score_v1_list.append(score)
print(score_v1_list)
print(np.mean(score_v1_list))
kf = KFold(n_splits=5, random_state=22, shuffle=True)
model_v2_list = []
score_v2_list = []
for train_index, test_index in kf.split(shape_list[:len(train_df_list)]):
train_data = []
y_data = []
for idx in train_index:
data = get_data(idx)
train_data.append(data[0])
y_data.append(data[1])
train_data = np.concatenate(train_data, axis=0)
y_data = np.concatenate(y_data, axis=0)
model_v2 = get_model_v2()
model_v2.fit(train_data, y_data)
model_v2_list.append(model_v2)
y_true = []
y_pred = []
for idx in test_index:
data = get_data(idx)
proba = model_v2.predict_proba(data[0])
pred = np.argmax(np.sum(proba, axis=0) / proba.shape[0])
y_pred.append(pred)
y_true.append(data[1][0])
score = f1_score(y_pred, y_true, average='macro')
score_v2_list.append(score)
print(score_v2_list)
print(np.mean(score_v2_list))
kf = KFold(n_splits=5, random_state=22, shuffle=True)
model_v3_list = []
score_v3_list = []
for train_index, test_index in kf.split(shape_list[:len(train_df_list)]):
train_data = []
y_data = []
for idx in train_index:
data = get_data(idx)
train_data.append(data[0])
y_data.append(data[1])
train_data = np.concatenate(train_data, axis=0)
y_data = np.concatenate(y_data, axis=0)
model_v3 = RandomForestClassifier(bootstrap=False,
criterion="entropy",
max_features=0.1,
min_samples_leaf=1,
min_samples_split=2,
n_estimators=100)
model_v3.fit(train_data, y_data)
model_v3_list.append(model_v3)
y_true = []
y_pred = []
for idx in test_index:
data = get_data(idx)
proba = model_v3.predict_proba(data[0])
pred = np.argmax(np.sum(proba, axis=0) / proba.shape[0])
y_pred.append(pred)
y_true.append(data[1][0])
score = f1_score(y_pred, y_true, average='macro')
score_v3_list.append(score)
print(score_v3_list)
print(np.mean(score_v3_list))
kf = KFold(n_splits=5, random_state=22, shuffle=True)
model_v4_list = []
score_v4_list = []
for train_index, test_index in kf.split(shape_list[:len(train_df_list)]):
train_data = []
y_data = []
for idx in train_index:
data = get_data(idx)
train_data.append(data[0])
y_data.append(data[1])
train_data = np.concatenate(train_data, axis=0)
y_data = np.concatenate(y_data, axis=0)
model_v4 = ExtraTreesClassifier(bootstrap=False,
criterion="entropy",
max_features=0.6000000000000001,
min_samples_leaf=1,
min_samples_split=3,
n_estimators=100)
model_v4.fit(train_data, y_data)
model_v4_list.append(model_v4)
y_true = []
y_pred = []
for idx in test_index:
data = get_data(idx)
proba = model_v4.predict_proba(data[0])
pred = np.argmax(np.sum(proba, axis=0) / proba.shape[0])
y_pred.append(pred)
y_true.append(data[1][0])
score = f1_score(y_pred, y_true, average='macro')
score_v4_list.append(score)
print(score_v4_list)
print(np.mean(score_v4_list))
pred = []
for i in range(len(train_df_list), len(shape_list)):
start_idx = int(np.sum(shape_list[len(train_df_list):i]))
sample = X_test[start_idx:start_idx + shape_list[i]]
result = []
for model in model_v1_list:
result.append(
np.sum(model.predict_proba(sample), axis=0) / shape_list[i])
for model in model_v2_list:
result.append(
np.sum(model.predict_proba(sample), axis=0) / shape_list[i])
for model in model_v3_list:
result.append(
np.sum(model.predict_proba(sample), axis=0) / shape_list[i])
for model in model_v4_list:
result.append(
np.sum(model.predict_proba(sample), axis=0) / shape_list[i])
pred.append(np.sum(result, axis=0) / 20)
pd.DataFrame(pred, index=id_list[len(train_df_list):]).to_csv(
'./probaresult.csv', header=None)
# load the data
data = load_watch()
X = data['X']
y = data['y']
# create a feature representation pipeline with PadTrunc segmentation
# the time series are between 20-40 seconds
# this truncates them all to the first 5 seconds (sampling rate is 50 Hz)
pipe = Pype([('trunc', PadTrunc(width=250)), ('features', FeatureRep()),
('scaler', StandardScaler()), ('svc', LinearSVC())])
# split the data
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.25,
shuffle=True,
random_state=42)
pipe.fit(X_train, y_train)
score = pipe.score(X_test, y_test)
print("N series in train: ", len(X_train))
print("N series in test: ", len(X_test))
print("N segments in train: ", pipe.N_train)
print("N segments in test: ", pipe.N_test)
print("Accuracy score: ", score)
img = mpimg.imread('trunk.jpg')
plt.imshow(img)
X_train, X_test, y_train, y_test = temporal_split(X, y, test_size=0.25)
# create a feature representation pipeline
# setting y_func = last, and forecast = 200 makes us predict the value of y
# 200 samples ahead of the segment
# other reasonable options for y_func are ``mean``, ``all`` (or create your own function)
# see the API documentation for further details
clf = Pype([('segment',
SegmentXYForecast(width=200,
overlap=0.5,
y_func=last,
forecast=200)), ('features', FeatureRep()),
('lin', LinearRegression())])
# fit and score
clf.fit(X_train, y_train)
score = clf.score(X_test, y_test)
print("N series in train: ", len(X_train))
print("N series in test: ", len(X_test))
print("N segments in train: ", clf.N_train)
print("N segments in test: ", clf.N_test)
print("Score: ", score)
# generate some predictions
y, y_p = clf.transform_predict(X, y) # all predictions
ytr, ytr_p = clf.transform_predict(X_train, y_train) # training predictions
yte, yte_p = clf.transform_predict(X_test, y_test) # test predictions
# note - the first few segments in the test set won't have predictions (gap)
# we plot the 'gap' for the visualization to hopefully make the situation clear
train_df['time'] = pd.to_datetime(train_df['time'], format='%m%d %H:%M:%S')
all_df = pd.concat([train_df])
X = []
y = []
id_list = []
for ship_id, group in all_df.groupby('渔船ID'):
X.append(group[['lat', 'lon', '速度', '方向', 'time']])
y.append(group['type'].values[0])
id_list.append(ship_id)
print(len(id_list))
pype = Pype([('segment', SegmentX(width=72, overlap=0.1))])
pype = pype.fit(X, y)
shape_list = []
df_list = []
for ship_id, group in all_df.groupby('渔船ID'):
sample = group[['lat', 'lon', '速度', '方向', 'time']].values
transform_result = pype.transform([sample])[0]
if transform_result.shape[0] == 0:
seg_df = pd.DataFrame(sample,
columns=['lat', 'lon', '速度', '方向', 'time'])
seg_df['渔船ID'] = len(df_list)
seg_df['type'] = group['type'].values[0]
df_list.append(seg_df)
shape_list.append(1)
else:
y = data['y']
# I am adding in a column to represent time (50 Hz sampling), since my data doesn't include it
# the Interp class assumes time is the first column in the series
X = np.array([np.column_stack([np.arange(len(X[i])) / 50., X[i]]) for i in np.arange(len(X))])
clf = Pype([('interp', Interp(1. / 25., categorical_target=True)),
('segment', Segment(width=100)),
('features', FeatureRep()),
('scaler', StandardScaler()),
('rf', RandomForestClassifier(n_estimators=20))])
# split the data
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.25)
clf.fit(X_train, y_train)
score = clf.score(X_test, y_test)
print("N series in train: ", len(X_train))
print("N series in test: ", len(X_test))
print("N segments in train: ", clf.N_train)
print("N segments in test: ", clf.N_test)
print("Accuracy score: ", score)
# lets try a few different sampling periods
# temporal splitting of data
splitter = TemporalKFold(n_splits=3)
Xs, ys, cv = splitter.split(X, y)
# here we use a callable parameter to force the segmenter width to equal 2 seconds
# note this is an extension of the sklearn api for setting class parameters
def test_pipe_regression():
# no context data, single time series
X = [np.random.rand(1000, 10)]
y = [np.random.rand(1000)]
pipe = Pype([('seg', SegmentXY()), ('ftr', FeatureRep()),
('ridge', Ridge())])
pipe.fit(X, y)
pipe.transform_predict(X, y)
pipe.predict(X)
pipe.score(X, y)
# context data, single time seres
Xt = [np.random.rand(1000, 10)]
Xc = [np.random.rand(3)]
X = TS_Data(Xt, Xc)
y = [np.random.rand(1000)]
pipe.fit(X, y)
pipe.transform_predict(X, y)
pipe.predict(X)
pipe.score(X, y)
# multiple time seres
Xt = [
np.random.rand(1000, 10),
np.random.rand(100, 10),
np.random.rand(500, 10)
]
Xc = np.random.rand(3, 3)
X = TS_Data(Xt, Xc)
y = [np.random.rand(1000), np.random.rand(100), np.random.rand(500)]
pipe.fit(X, y)
pipe.transform_predict(X, y)
pipe.predict(X)
pipe.score(X, y)
# cross val
Xt = np.array([np.random.rand(1000, 10)] * 5)
Xc = np.random.rand(5, 3)
X = TS_Data(Xt, Xc)
y = np.array([np.random.rand(1000)] * 5)
cross_validate(pipe, X, y, cv=3)
# transform pipe
pipe = Pype([('seg', SegmentXY()), ('ftr', FeatureRep()),
('scaler', StandardScaler())])
Xt = [
np.random.rand(1000, 10),
np.random.rand(100, 10),
np.random.rand(500, 10)
]
Xc = np.random.rand(3, 3)
X = TS_Data(Xt, Xc)
y = [np.random.rand(1000), np.random.rand(100), np.random.rand(500)]
pipe.fit(X, y)
pipe.transform(X, y)
pipe.fit_transform(X, y)
def test_pipe_PadTrunc():
# no context data, single time series
X = [np.random.rand(1000, 10)]
y = [5]
pipe = Pype([('trunc', PadTrunc()), ('ftr', FeatureRep()),
('rf', RandomForestClassifier(n_estimators=10))])
pipe.fit(X, y)
pipe.transform_predict(X, y)
pipe.predict(X)
pipe.score(X, y)
# context data, single time seres
Xt = [np.random.rand(1000, 10)]
Xc = [np.random.rand(3)]
X = TS_Data(Xt, Xc)
y = [5]
pipe.fit(X, y)
pipe.transform_predict(X, y)
pipe.predict(X)
pipe.score(X, y)
# multiple time series
Xt = [
np.random.rand(1000, 10),
np.random.rand(100, 10),
np.random.rand(500, 10)
]
Xc = np.random.rand(3, 3)
X = TS_Data(Xt, Xc)
y = [1, 2, 3]
pipe.fit(X, y)
pipe.transform_predict(X, y)
pipe.predict(X)
pipe.score(X, y)
# univariate data
Xt = [np.random.rand(1000), np.random.rand(100), np.random.rand(500)]
Xc = np.random.rand(3)
X = TS_Data(Xt, Xc)
y = [1, 2, 3]
pipe.fit(X, y)
pipe.transform_predict(X, y)
pipe.predict(X)
pipe.score(X, y)
# transform pipe
pipe = Pype([('trunc', PadTrunc()), ('ftr', FeatureRep()),
('scaler', StandardScaler())])
Xt = [
np.random.rand(1000, 10),
np.random.rand(100, 10),
np.random.rand(500, 10)
]
Xc = np.random.rand(3, 3)
X = TS_Data(Xt, Xc)
y = [1, 2, 3]
pipe.fit(X, y)
pipe.transform(X, y)
pipe.fit_transform(X, y)
le = preprocessing.LabelEncoder()
y_train = le.fit_transform(y[:len(train_df_list)])
X_train = X[:len(train_df_list)]
X_test = X[len(train_df_list):]
kf = KFold(n_splits=5, random_state=42, shuffle=True)
model_v1_list = []
score_v1_list = []
for train_index, test_index in kf.split(X_train):
model_v1 = Pype([('segment', SegmentX(width=10)),
('features', FeatureRep()),
('scaler', StandardScaler()),
('rf', RandomForestClassifier(n_estimators=100, random_state=42))])
model_v1.fit(np.array(X_train)[train_index], y_train[train_index])
model_v1_list.append(model_v1)
y_pred = []
for test_sample in np.array(X_train)[test_index]:
result = model_v1.predict_proba([test_sample])
pred = np.argmax(np.sum(result, axis=0) / result.shape[0])
y_pred.append(pred)
score_v1_list.append(f1_score(y_train[test_index], y_pred, average='macro'))
print(score_v1_list)
print(np.mean(score_v1_list), np.std(score_v1_list))
result_list = []
for model in model_v1_list:
