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split_util.py
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import os
import random
import shutil
def key_str2int(obj):
obj_new = {}
for k in obj:
obj_new[int(k)] = obj[k]
return obj_new
def merge_school(all_school_info, min_school_user=100, min_mean_seq_len=20):
# 将人数太少的学校合并起来，并剔除一些学校（序列太短）不能被选为测试集
result = {}
i = 0
not_test = []
not_test_merged = []
for school_id, school_info in all_school_info.items():
if school_id == -1:
continue
result.setdefault(i, [])
num_user = school_info["num_user"]
num_interaction = school_info["num_interaction"]
mean_num_interaction = num_interaction / num_user
if mean_num_interaction < min_mean_seq_len:
not_test.append(school_id)
continue
if len(result[i]) == 0:
# 如果当前合并id下没有学校，直接将下一个学校加入进来
result[i].append(school_id)
if num_user > min_school_user:
i += 1
continue
total_num_user = 0
for selected_school in result[i]:
total_num_user += all_school_info[selected_school]["num_user"]
result[i].append(school_id)
if (total_num_user + num_user) > min_school_user:
i += 1
if len(result[i]) > 0:
i += 1
for school_id in not_test:
result.setdefault(i, [])
num_user = all_school_info[school_id]["num_user"]
if len(result[i]) == 0:
not_test_merged.append(i)
# 如果当前合并id下没有学校，直接将下一个学校加入进来
result[i].append(school_id)
if num_user > min_school_user:
i += 1
continue
total_num_user = 0
for selected_school in result[i]:
total_num_user += all_school_info[selected_school]["num_user"]
result[i].append(school_id)
if (total_num_user + num_user) > min_school_user:
i += 1
return result, not_test_merged
def refine_merged_school_info(merged_schools, all_school_info):
merged_schools_new = {}
for merged_id, original_ids in merged_schools.items():
merged_schools_new[merged_id] = {
"school_ids": original_ids,
"num_user": 0,
"num_interaction": 0
}
for ori_id in original_ids:
merged_schools_new[merged_id]["num_user"] += all_school_info[ori_id]["num_user"]
merged_schools_new[merged_id]["num_interaction"] += all_school_info[ori_id]["num_interaction"]
return merged_schools_new
def split(merged_school_info, not_test_merged_schools, train_ratio=0.8):
total_num_user = 0
total_num_interaction = 0
for school_info in merged_school_info.values():
total_num_user += school_info["num_user"]
total_num_interaction += school_info["num_interaction"]
not_test_num_user = 0
not_test_num_interaction = 0
for not_test_id in not_test_merged_schools:
not_test_num_user += merged_school_info[not_test_id]["num_user"]
not_test_num_interaction += merged_school_info[not_test_id]["num_interaction"]
not_test_ratio = not_test_num_interaction / total_num_interaction
trainable_schools = list(set(merged_school_info.keys()) - set(not_test_merged_schools))
num_school_test = int(len(trainable_schools) * ((1 - train_ratio) / (1 - not_test_ratio)))
if random.random() > 0.5:
num_school_test += 1
random.shuffle(trainable_schools)
schools_test = trainable_schools[:num_school_test]
total_train_num_user = 0
total_train_num_interaction = 0
schools_train = list(set(trainable_schools) - set(schools_test)) + not_test_merged_schools
for train_id in schools_train:
total_train_num_user += merged_school_info[train_id]["num_user"]
total_train_num_interaction += merged_school_info[train_id]["num_interaction"]
total_test_num_user = 0
total_test_num_interaction = 0
for test_id in schools_test:
total_test_num_user += merged_school_info[test_id]["num_user"]
total_test_num_interaction += merged_school_info[test_id]["num_interaction"]
return schools_test, (total_train_num_user, total_test_num_user), (total_train_num_interaction, total_test_num_interaction)
def split_data(data_all, test_merged_schools, merged_school_info):
test_schools_original_id = []
for merged_id in test_merged_schools:
test_schools_original_id.extend(merged_school_info[merged_id]["school_ids"])
data_train_iid = list(filter(lambda x: x["school_id"] not in test_schools_original_id, data_all))
data_test_ood = list(filter(lambda x: x["school_id"] in test_schools_original_id, data_all))
return data_train_iid, data_test_ood
def copy_file(src_dir, dst_dir, dataset_name):
all_files_in_setting = os.listdir(src_dir)
for file_name in all_files_in_setting:
if dataset_name in file_name:
src_file_path = os.path.join(src_dir, file_name)
dst_file_path = os.path.join(dst_dir, file_name)
shutil.copy2(src_file_path, dst_file_path)
def rename_file(setting_dir):
# [dataset_name]_[multi | single]_train.txt --> [dataset_name]_[multi | single]_train_fold_0.txt
# [dataset_name]_[multi | single]_test_iid.txt --> [dataset_name]_[multi | single]_valid_fold_0.txt
# [dataset_name]_[multi | single]_test_ood.txt --> [dataset_name]_[multi | single]_test.txt
all_files_in_setting = os.listdir(setting_dir)
for file_name in all_files_in_setting:
if "test_iid.txt" in file_name:
old_name = os.path.join(setting_dir, file_name)
new_name = os.path.join(setting_dir, file_name.replace("test_iid", "valid_fold_0"))
os.rename(old_name, new_name)
continue
if "test_ood.txt" in file_name:
old_name = os.path.join(setting_dir, file_name)
new_name = os.path.join(setting_dir, file_name.replace("_ood", ""))
os.rename(old_name, new_name)
continue
if "train.txt" in file_name:
old_name = os.path.join(setting_dir, file_name)
new_name = os.path.join(setting_dir, file_name.replace("train", "train_fold_0"))
os.rename(old_name, new_name)
continue
def copy_file_all(src_dir, dst_dir):
all_files_in_setting = os.listdir(src_dir)
for file_name in all_files_in_setting:
src_file_path = os.path.join(src_dir, file_name)
dst_file_path = os.path.join(dst_dir, file_name)
shutil.copy2(src_file_path, dst_file_path)
def reverse_train_valid_name(setting_dir):
all_files_in_setting = os.listdir(setting_dir)
for file_name in all_files_in_setting:
if "valid" in file_name:
old_name = os.path.join(setting_dir, file_name)
tmp_new_name = os.path.join(setting_dir, file_name.replace("valid_fold_0", "test_tmp"))
os.rename(old_name, tmp_new_name)
if "test" in file_name:
old_name = os.path.join(setting_dir, file_name)
tmp_new_name = os.path.join(setting_dir, file_name.replace("test", "valid_fold_0_tmp"))
os.rename(old_name, tmp_new_name)
all_files_in_setting = os.listdir(setting_dir)
for file_name in all_files_in_setting:
if "valid" in file_name or "test" in file_name:
old_name = os.path.join(setting_dir, file_name)
new_name = os.path.join(setting_dir, file_name.replace("_tmp", ""))
os.rename(old_name, new_name)