文章目录

• • 1. 工具包导入
  • 2. 数据导入
  • 3. 数据预处理
  • 5. 模型训练
  • • 5.1 评估函数
    • 5.2 模型参数设置
  • 5.3 输出
• baseline_v1_outputInt:score:502.5345

# 2021.05.02 # v1版：对输出结果进行优化，概率》0.9输出为1 # 本文原创 望赞鼓励

仍存疑问： lightgbm参数，运行机制没时间看

Datawhile三月选题：心跳信号分类：材料网址
1. 工具包导入

import os import gc import mathimport pandas as pd import numpy as npimport lightgbm as lgb #import xgboost as xgb from catboost import CatBoostRegressor from sklearn.linear_model import SGDRegressor, LinearRegression, Ridge from sklearn.preprocessing import MinMaxScalerfrom sklearn.model_selection import StratifiedKFold, KFold from sklearn.metrics import log_loss from sklearn.model_selection import train_test_split from sklearn.preprocessing import OneHotEncoderfrom tqdm import tqdm import matplotlib.pyplot as plt import time import warnings warnings.filterwarnings('ignore')

2. 数据导入

train = pd.read_csv('train.csv') test=pd.read_csv('testA.csv') train.head()

	id	heartbeat_signals	label
0	0	0.9912297987616655,0.9435330436439665,0.764677...	0.0
1	1	0.9714822034884503,0.9289687459588268,0.572932...	0.0
2	2	1.0,0.9591487564065292,0.7013782792997189,0.23...	2.0
3	3	0.9757952826275774,0.9340884687738161,0.659636...	0.0
4	4	0.0,0.055816398940721094,0.26129357194994196,0...	2.0

test.head() train.info

了解到有3个columns: id , heartbeat_signals , label
并有10，000条训练数据

3. 数据预处理 压缩函数：提前准备好 ，有些竞赛内存有限制的时候用。

def reduce_mem_usage(df): start_mem = df.memory_usage().sum() / 1024**2 print('Memory usage of dataframe is {:.2f} MB'.format(start_mem))for col in df.columns: col_type = df[col].dtypeif col_type != object: c_min = df[col].min() c_max = df[col].max() if str(col_type)[:3] == 'int': if c_min > np.iinfo(np.int8).min and c_max < np.iinfo(np.int8).max: df[col] = df[col].astype(np.int8) elif c_min > np.iinfo(np.int16).min and c_max < np.iinfo(np.int16).max: df[col] = df[col].astype(np.int16) elif c_min > np.iinfo(np.int32).min and c_max < np.iinfo(np.int32).max: df[col] = df[col].astype(np.int32) elif c_min > np.iinfo(np.int64).min and c_max < np.iinfo(np.int64).max: df[col] = df[col].astype(np.int64) else: if c_min > np.finfo(np.float16).min and c_max < np.finfo(np.float16).max: df[col] = df[col].astype(np.float16) elif c_min > np.finfo(np.float32).min and c_max < np.finfo(np.float32).max: df[col] = df[col].astype(np.float32) else: df[col] = df[col].astype(np.float64) else: df[col] = df[col].astype('category')end_mem = df.memory_usage().sum() / 1024**2 print('Memory usage after optimization is: {:.2f} MB'.format(end_mem)) print('Decreased by {:.1f}%'.format(100 * (start_mem - end_mem) / start_mem))return df

# 简单预处理 train_list = []for items in train.values: train_list.append([items[0]] + [float(i) for i in items[1].split(',')] + [items[2]])train = pd.DataFrame(np.array(train_list)) train.columns = ['id'] + ['s_'+str(i) for i in range(len(train_list[0])-2)] + ['label'] train = reduce_mem_usage(train)test_list=[] for items in test.values: test_list.append([items[0]] + [float(i) for i in items[1].split(',')])test = pd.DataFrame(np.array(test_list)) test.columns = ['id'] + ['s_'+str(i) for i in range(len(test_list[0])-1)] test = reduce_mem_usage(test)

Memory usage of dataframe is 157.93 MB
Memory usage after optimization is: 39.67 MB
Decreased by 74.9%
Memory usage of dataframe is 31.43 MB
Memory usage after optimization is: 7.90 MB
Decreased by 74.9%
。。。。。。。。。。。。。。代码解析部分。。。。。。。。。。。

• 杨鸽分析 - 1: .values：值

for items in train.values: train_list.append([items[0]] + [float(i) for i in items[1].split(',')] + [items[2]])

1. 我们看一下train.values的内容
2. 计算机并分不清里面的意义 每一个id是个array,所以读取了[[0 行values],[1 行values],…[9999 行values]]
3. 从[0 行values]所分析内容可以知道有3个栏目：[items[0]]就是value【0】也就是id的0，[items[2]是最后的0.0，中间项[items[1]，每个，都用.split分开

.
https://www.runoob.com/python/att-dictionary-items.html

[0 行values] 内容如下：

文章图片

[0 ‘0.9912297987616655,0.9435330436439665,0.7646772997256593,0.6185708990212999,0.3796321642826237,0.19082233510621885,0.040237131594430715,0.02599520771717858,0.03170886048677242,0.06552357497104398,0.12553088566683082,0.14674736762087337,0.16765635354203254,0.19337353075154495,0.22613482558418235,0.2211427948707646,0.23606736350657742,0.2211427948707646,0.2211427948707646,0.21110661221417562,0.20858662883955462,0.19337353075154495,0.19592021355822875,0.1984624088145674,0.18570638844539308,0.19592020417425474,0.18314160533045887,0.19337353075154495,0.19082233510621885,0.20858662883955462,0.2211427948707646,0.2508391000672623,0.2606035735248363,0.27753397418529446,0.2942679945470305,0.3037438606924122,0.3364276621747203,0.3479233126336631,0.38410562561692113,0.3863371817756788,0.4084648300418338,0.4106590521686313,0.42592580507675887,0.42592580507675887,0.4291763526701312,0.4324195928902589,0.42809365036122277,0.42809365036122277,0.4128499421288813,0.41503751002775946,0.39744344526503395,0.40186210145863127,0.38856529150062463,0.4040663811296295,0.3952290154247498,0.39854937055983863,0.40186210145863127,0.41722173372658117,0.43457767776945677,0.4302582430505069,0.4324195928902589,0.41503751002775946,0.43457767776945677,0.42592580507675887,0.39744344526503395,0.3570543268368737,0.3456314920490284,0.334117492319521,0.3178419565867778,0.3201783146071371,0.3178419565867778,0.334117492319521,0.3248396760909577,0.334117492319521,0.3248396760909577,0.3364276621747203,0.32716473826850506,0.331803634364786,0.3364276621747203,0.32716473826850506,0.334117492319521,0.334117492319521,0.3456314920490284,0.34333602495581456,0.35477697711039125,0.334117492319521,0.334117492319521,0.4062672980405093,0.4957985125670452,0.5800967406106492,0.6925715000677044,0.8284346202194008,0.9465607483396898,1.0,0.9779737148370964,0.8528463111218912,0.6925715000677044,0.518357117251287,0.26546113853132874,0.18057224500953173,0.09037444062714899,0.0,0.011611290892655711,0.014499569681678932,0.07662128178823865,0.11749356439958623,0.15462379539892293,0.18314160533045887,0.21613343067782795,0.20858662883955462,0.21236496446001718,0.21613343067782795,0.20858662883955462,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0’
0.0]

train = pd.DataFrame(np.array(train_list))

• 杨鸽分析 - 2: pd.DataFrame()函数解析

DataFrame是Python中Pandas库中的一种数据结构，它类似excel，是一种二维表

https://blog.csdn.net/tefuirnever/article/details/93708964

train.head() train.info

test.head() test.info

。。。。。。。。。。。。。。解析结束。。。。。。。。。。。

#删除表中的某一行或者某一列更明智的方法是使用drop，它不改变原有的df中的数据，而是返回另一个dataframe来存放删除后的数据。 #就是新开一个表 #drop函数默认删除行，列需要加axis = 1 x_train = train.drop(['id','label'], axis=1) y_train = train['label'] x_test=test.drop(['id'], axis=1)

x_train.info

x_test.info

y_train

00.0 10.0 22.0 30.0 42.0 ... 999950.0 999962.0 999973.0 999982.0 999990.0 Name: label, Length: 100000, dtype: float16

5. 模型训练 5.1 评估函数
评测公式（损失函数）：a b s ? s u m = ∑ j = 1 n ∑ i = 1 4 ∣ y i ? a i ∣ {abs-sum={\mathop{ \sum }\limits_{{j=1}}^{{n}}{{\mathop{ \sum }\limits_{{i=1}}^{{4}}{{ \left| {y\mathop{{}}\nolimits_{{i}}-a\mathop{{}}\nolimits_{{i}}} \right| }}}}}} abs?sum=j=1∑n?i=1∑4?∣yi??ai?∣
例如，某心跳信号类别为1，通过编码转成[0,1,0,0]，预测不同心跳信号概率为[0.1,0.7,0.1,0.1]，那么这个信号预测结果的abs-sum为a b s ? s u m = ∣ 0.1 ? 0 ∣ + ∣ 0.7 ? 1 ∣ + ∣ 0.1 ? 0 ∣ + ∣ 0.1 ? 0 ∣ = 0.6 {abs-sum={ \left| {0.1-0} \right| }+{ \left| {0.7-1} \right| }+{ \left| {0.1-0} \right| }+{ \left| {0.1-0} \right| }=0.6} abs?sum=∣0.1?0∣+∣0.7?1∣+∣0.1?0∣+∣0.1?0∣=0.6

def abs_sum(y_pre,y_tru): y_pre=np.array(y_pre) y_tru=np.array(y_tru) loss=sum(sum(abs(y_pre-y_tru))) return loss

test = np.zeros((x_test.shape[0],4)) print(test) test

[[0. 0. 0. 0.] [0. 0. 0. 0.] [0. 0. 0. 0.] ... [0. 0. 0. 0.] [0. 0. 0. 0.] [0. 0. 0. 0.]]array([[0., 0., 0., 0.], [0., 0., 0., 0.], [0., 0., 0., 0.], ..., [0., 0., 0., 0.], [0., 0., 0., 0.], [0., 0., 0., 0.]])

5.2 模型参数设置

def cv_model(clf, train_x, train_y, test_x, clf_name): folds = 5 seed = 2021#k-交叉验证KFold # n_split:要划分的折数 #shuffle: 每次都进行shuffle，测试集中折数的总和就是训练集的个数 #random_state:随机状态 总结：对于那些本质上是随机的过程，我们有必要控制随机的状态，这样才能重复的展现相同的结果。 #如果，对随机状态不加控制，那么实验的结果就无法固定，而是随机的显现。比喻的说一下，也不知道准不准确。 # 一个容器中放置一定量的沙子，每次用手去抓沙子的时候，抓取的结果会受到抓取的力度、一只手抓还是两只手抓、手是干的或湿的等诸多因素的影响（将影响因素定为A={a,b,c,d,e,f,……}）。 #固定random_state后，每次抓取沙子时的影响因素将被固定为具体的某一组，这样每次抓取的沙子就具有了相同的状态。kf = KFold(n_splits=folds, shuffle=True, random_state=seed) test = np.zeros((test_x.shape[0],4))cv_scores = []#sparse=True 表示编码的格式，默认为 True，即为稀疏的格式，指定 False 则就不用 toarray() 了 onehot_encoder = OneHotEncoder(sparse=False)#然后train_index, valid_index取得是数字的索引号，类似于指针。 # kf.split(train_x, train_y)就是两个同时取 train_x取1-4做测试集 那么train_y同事也是1-4做测试集 for i, (train_index, valid_index) in enumerate(kf.split(train_x, train_y)):print('************************************ {} ************************************'.format(str(i+1)))# .iloc 提取的某一行，i取值就是【1，folds】， # 其实就是去了四块内容，训练集(trn_)的x 训练集的y 测试集(valid_)x 测试集y trn_x, trn_y, val_x, val_y = train_x.iloc[train_index], train_y[train_index], train_x.iloc[valid_index], train_y[valid_index]if clf_name == "lgb": train_matrix = clf.Dataset(trn_x, label=trn_y) valid_matrix = clf.Dataset(val_x, label=val_y)params = { 'boosting_type': 'gbdt', 'objective': 'multiclass', 'num_class': 4, 'num_leaves': 2 ** 5, 'feature_fraction': 0.8, 'bagging_fraction': 0.8, 'bagging_freq': 4, 'learning_rate': 0.1, 'seed': seed, 'nthread': 28, 'n_jobs':24, 'verbose': -1, }model = clf.train(params, train_set=train_matrix, valid_sets=valid_matrix, num_boost_round=2000, verbose_eval=100, early_stopping_rounds=200) val_pred = model.predict(val_x, num_iteration=model.best_iteration) test_pred = model.predict(test_x, num_iteration=model.best_iteration) #.reshape(-1, 1) 就是我不知道变成多少列（-1），但每行只有一个（1） val_y=np.array(val_y).reshape(-1, 1) print("val_y++++++:") print(val_y) val_y = onehot_encoder.fit_transform(val_y) print("val_y++++++:") print(val_y) print("val_y++++++:") print('预测的概率矩阵为：') print(test_pred) test += test_pred score=abs_sum(val_y, val_pred) cv_scores.append(score) print(cv_scores) print("%s_scotrainre_list:" % clf_name, cv_scores) print("%s_score_mean:" % clf_name, np.mean(cv_scores)) #返回数组元素的标准差#a = np.array([[1, 2], [3, 4]]) #print(np.std(a))# 计算全局标准差 1.118033988749895 #print(np.std(a, axis=0))# axis=0计算每一列的标准差 [1. 1.]平均值2，3 ：(（1-2）^ +(3-2)^)/2=第一列标准差^2 #print(np.std(a, axis=1))# 计算每一行的标准差 [0.5 0.5] # print("%s_score_std:" % clf_name, np.std(cv_scores)) test=test/kf.n_splitsreturn test

def lgb_model(x_train, y_train, x_test): lgb_test = cv_model(lgb, x_train, y_train, x_test, "lgb") return lgb_test lgb_test = lgb_model(x_train, y_train, x_test)

************************************ 1 ************************************ [LightGBM] [Warning] num_threads is set with nthread=28, will be overridden by n_jobs=24. Current value: num_threads=24 Training until validation scores don't improve for 200 rounds [100] valid_0's multi_logloss: 0.0525735 [200] valid_0's multi_logloss: 0.0422444 [300] valid_0's multi_logloss: 0.0407076 [400] valid_0's multi_logloss: 0.0420398 Early stopping, best iteration is: [289] valid_0's multi_logloss: 0.0405457 val_y++++++: [[2.] [0.] [2.] ... [0.] [2.] [2.]] val_y++++++: [[0. 0. 1. 0.] [1. 0. 0. 0.] [0. 0. 1. 0.] ... [1. 0. 0. 0.] [0. 0. 1. 0.] [0. 0. 1. 0.]] val_y++++++: 预测的概率矩阵为： [[9.99969791e-01 2.85197261e-05 1.00341946e-06 6.85357631e-07] [7.93287264e-05 7.69060914e-04 9.99151590e-01 2.00810971e-08] [5.75356884e-07 5.04051497e-08 3.15322414e-07 9.99999059e-01] ... [6.79267940e-02 4.30206297e-04 9.31640185e-01 2.81516302e-06] [9.99960477e-01 3.94098074e-05 8.34030725e-08 2.94638661e-08] [9.88705846e-01 2.14081630e-03 6.67418381e-03 2.47915423e-03]] [607.0736049372185] ************************************ 2 ************************************ [LightGBM] [Warning] num_threads is set with nthread=28, will be overridden by n_jobs=24. Current value: num_threads=24 Training until validation scores don't improve for 200 rounds [100] valid_0's multi_logloss: 0.0566626 [200] valid_0's multi_logloss: 0.0450852 [300] valid_0's multi_logloss: 0.044078 [400] valid_0's multi_logloss: 0.0455546 Early stopping, best iteration is: [275] valid_0's multi_logloss: 0.0437793 val_y++++++: [[2.] [3.] [3.] ... [0.] [0.] [0.]] val_y++++++: [[0. 0. 1. 0.] [0. 0. 0. 1.] [0. 0. 0. 1.] ... [1. 0. 0. 0.] [1. 0. 0. 0.] [1. 0. 0. 0.]] val_y++++++: 预测的概率矩阵为： [[9.99991401e-01 7.69109547e-06 6.65504756e-07 2.42084688e-07] [5.72380482e-05 1.32812809e-03 9.98614607e-01 2.66534396e-08] [2.82123411e-06 4.13195205e-07 1.34026965e-06 9.99995425e-01] ... [6.96398024e-02 6.52459907e-04 9.29685742e-01 2.19960932e-05] [9.99972366e-01 2.75069005e-05 7.68142933e-08 5.07415018e-08] [9.67263676e-01 7.26154408e-03 2.41533542e-02 1.32142531e-03]] [607.0736049372185, 623.4313863731124] ************************************ 3 ************************************ [LightGBM] [Warning] num_threads is set with nthread=28, will be overridden by n_jobs=24. Current value: num_threads=24 Training until validation scores don't improve for 200 rounds [100] valid_0's multi_logloss: 0.0498722 [200] valid_0's multi_logloss: 0.038028 [300] valid_0's multi_logloss: 0.0358066 [400] valid_0's multi_logloss: 0.0361478 [500] valid_0's multi_logloss: 0.0379597 Early stopping, best iteration is: [340] valid_0's multi_logloss: 0.0354344 val_y++++++: [[0.] [2.] [0.] ... [2.] [3.] [0.]] val_y++++++: [[1. 0. 0. 0.] [0. 0. 1. 0.] [1. 0. 0. 0.] ... [0. 0. 1. 0.] [0. 0. 0. 1.] [1. 0. 0. 0.]] val_y++++++: 预测的概率矩阵为： [[9.99972032e-01 2.62406774e-05 1.17282152e-06 5.54230651e-07] [1.05242811e-05 6.50215805e-05 9.99924453e-01 6.93812546e-10] [1.93240868e-06 1.10384984e-07 3.76773426e-07 9.99997580e-01] ... [1.34894410e-02 3.84569683e-05 9.86471555e-01 5.46564350e-07] [9.99987431e-01 1.25532882e-05 1.03902298e-08 5.46727770e-09] [9.78722948e-01 1.06329839e-02 6.94192038e-03 3.70214810e-03]] [607.0736049372185, 623.4313863731124, 508.02381607269535] ************************************ 4 ************************************ [LightGBM] [Warning] num_threads is set with nthread=28, will be overridden by n_jobs=24. Current value: num_threads=24 Training until validation scores don't improve for 200 rounds [100] valid_0's multi_logloss: 0.0564768 [200] valid_0's multi_logloss: 0.0448698 [300] valid_0's multi_logloss: 0.0446719 [400] valid_0's multi_logloss: 0.0470399 Early stopping, best iteration is: [250] valid_0's multi_logloss: 0.0438853 val_y++++++: [[0.] [0.] [0.] ... [3.] [0.] [1.]] val_y++++++: [[1. 0. 0. 0.] [1. 0. 0. 0.] [1. 0. 0. 0.] ... [0. 0. 0. 1.] [1. 0. 0. 0.] [0. 1. 0. 0.]] val_y++++++: 预测的概率矩阵为： [[9.99979692e-01 1.70821979e-05 1.27048476e-06 1.95571841e-06] [5.66207785e-05 4.02275314e-04 9.99541086e-01 1.82828519e-08] [2.62267451e-06 3.58613522e-07 4.78645006e-06 9.99992232e-01] ... [4.56636552e-02 5.69497433e-04 9.53758468e-01 8.37980573e-06] [9.99896785e-01 1.02796802e-04 2.46636563e-07 1.72061021e-07] [8.70911669e-01 1.73790185e-02 1.04478175e-01 7.23113697e-03]] [607.0736049372185, 623.4313863731124, 508.02381607269535, 660.4867407547266] ************************************ 5 ************************************ [LightGBM] [Warning] num_threads is set with nthread=28, will be overridden by n_jobs=24. Current value: num_threads=24 Training until validation scores don't improve for 200 rounds [100] valid_0's multi_logloss: 0.0506398 [200] valid_0's multi_logloss: 0.0396422 [300] valid_0's multi_logloss: 0.0381065 [400] valid_0's multi_logloss: 0.0390162 [500] valid_0's multi_logloss: 0.0414986 Early stopping, best iteration is: [324] valid_0's multi_logloss: 0.0379497 val_y++++++: [[2.] [0.] [0.] ... [0.] [0.] [0.]] val_y++++++: [[0. 0. 1. 0.] [1. 0. 0. 0.] [1. 0. 0. 0.] ... [1. 0. 0. 0.] [1. 0. 0. 0.] [1. 0. 0. 0.]] val_y++++++: 预测的概率矩阵为： [[9.99993352e-01 6.02902202e-06 1.13002685e-07 5.06277302e-07] [1.03959552e-05 5.03778956e-04 9.99485820e-01 5.07638601e-09] [1.92568065e-07 5.07155306e-08 4.94690856e-08 9.99999707e-01] ... [8.83103121e-03 2.51969353e-05 9.91142776e-01 9.96143937e-07] [9.99984791e-01 1.51997858e-05 5.62426491e-09 3.80450197e-09] [9.86084001e-01 8.75968498e-04 1.09742304e-02 2.06580027e-03]] [607.0736049372185, 623.4313863731124, 508.02381607269535, 660.4867407547266, 539.2160054696064] lgb_scotrainre_list: [607.0736049372185, 623.4313863731124, 508.02381607269535, 660.4867407547266, 539.2160054696064] lgb_score_mean: 587.6463107214719 lgb_score_std: 55.944536405714565

5.3 输出

temp=pd.DataFrame(lgb_test) result=pd.read_csv('sample_submit.csv') result['label_0']=temp[0] result['label_1']=temp[1] result['label_2']=temp[2] result['label_3']=temp[3] result.to_csv('submit_baseline.csv',index=False)

submit_data=https://www.it610.com/article/pd.read_csv('submit_baseline.csv')

submit_data

	id	label_0	label_1	label_2	label_3
0	100000	0.999981	1.711254e-05	8.450466e-07	7.887337e-07
1	100001	0.000043	6.136530e-04	9.993435e-01	1.415752e-08
2	100002	0.000002	1.966629e-07	1.373657e-06	9.999968e-01
3	100003	0.999970	1.909713e-05	1.097002e-05	3.576703e-08
4	100004	0.999983	1.769712e-06	1.482817e-05	1.966254e-07
...	...	...	...	...	...
19995	119995	0.998096	3.060176e-04	1.085313e-04	1.489757e-03
19996	119996	0.999846	1.436305e-04	1.074898e-05	8.837766e-08
19997	119997	0.041110	3.431635e-04	9.585397e-01	6.946754e-06
19998	119998	0.999960	3.949332e-05	8.457368e-08	5.230763e-08
19999	119999	0.958338	7.658066e-03	3.064437e-02	3.359933e-03

20000 rows × 5 columns

submit_data.to_csv('submit_baseline_v1.csv',index=False)

文章图片

baseline_v1_outputInt:score:502.5345

for index,row in submit_data.iterrows(): row_max = max(list(row)[1:]) if row_max > 0.9: for i in range(1,5): if row[i]>0.9: submit_data.iloc[index,i] = 1 else: submit_data.iloc[index,i] = 0 submit_data

	id	label_0	label_1	label_2	label_3
0	100000	1.0	0.0	0.0	0.0
1	100001	0.0	0.0	1.0	0.0
2	100002	0.0	0.0	0.0	1.0
3	100003	1.0	0.0	0.0	0.0
4	100004	1.0	0.0	0.0	0.0
...	...	...	...	...	...
19995	119995	1.0	0.0	0.0	0.0
19996	119996	1.0	0.0	0.0	0.0
19997	119997	0.0	0.0	1.0	0.0
19998	119998	1.0	0.0	0.0	0.0
19999	119999	1.0	0.0	0.0	0.0

20000 rows × 5 columns

submit_data.to_csv('submit_baseline_v1.csv',index=False)

【Datawhale|三月（心跳信号分类预测_baseline_v1：输出结果优化）】
文章图片

推荐阅读

• 

  Docker容器下快速搭建Hyperf框架在Windows系统的本地开发环境
• 

  u盘启动快捷键u盘启动快捷键
• 

  吃了止痛药能打新冠疫苗吗
• 

  FGO魔伊复刻流程攻略 魔法少女纪行复刻活动流程推荐
• 

  随性写的
• 

  高三学生经商有前途吗？
• 

  让你的打印机重获新生 益普生打印机废墨清零软件下载
• 

  3000元价位手机怎么选好 3000元价位手机怎么选
• 

  安乐什么意思 安乐是什么意思
• 

  王者荣耀狂铁所有皮肤 王者荣耀狂铁战令皮肤怎么样
• 

  代理服务器出了什么问题？ 代理服务器不能怎么回事
• 

  纵向沟通与横向沟通有何不同 横向沟通与纵向沟通各有哪些优缺点
• 

  吃南瓜子能减肥吗
• 

  圆的面积和底面积一样吗? 圆的面积和底面积一样吗
• 

  手机cpu怎么设置最佳性能
• 

  宫腔镜|不知道宫腔镜有何优势？给你列出这3点，可别小瞧了
• 

  急脾气的妈妈怎么对待慢性子的孩子
• 

  粉扑拿回来要洗吗 粉扑用完怎么放置
• 

  的哥马上要交班，却闯祸又丢工作
• 

  mysql查询前三名 mysql查询第三到第五

• 详解Swin Transformer核心实现，经典模型也能快速调优
• ICLR 2022｜唯快不破！北航、NTU、百度飞桨提出面向极限压缩的全二值化BiBERT
• OCR产业应用实战，多类别电表读数识别方案详解
• 人工智能|那些离开大厂，回归学术界的科学家们！
• python|snowflake 数据库_Snowflake数据分析教程
• 【功能剧透】自然语言仪表盘，搜索一下即刻分析
• CNN|SKnet论文解读
• python|用Python写个自动批改作业系统！
• python|用Python写个自动批改作业系统