基于华为云的在线拍卖数据分析

实验设备与平台：

• MapReduce服务 MRS
• 弹性公网IP
• 弹性云服务器ECS
• 基于aarch64架构的MySQL，MiniConda，Sqoop

1 数据集准备

1. 删除csv文件中无意义的特征：ReturnsAccepted
2. 通过WinSCP将csv文件传输到华为云文件系统/home/zkpk/raw/位置

mkdir /home/zkpkmkdir /home/zkpk/raw

3. 通过shell命令去除文件的首行字段

cd /home/zkpk/raw/sed -i '1d' TrainingSet.csvsed -i '1d' TestSet.csv

4. 将csv文件上传到HDFS

hadoop fs -put TrainingSet.csv /zkpk/raw/hadoop fs -put TestSet.csv /zkpk/raw/hadoop fs -ls /zkpk/raw/

2 数据集预处理

1. 启动hive，并创建数据库zkpk

SHOW DATABASES;CREATE DATABASE zkpk;SHOW DATABASES;

2. 对训练集创建外部表traingingset_log并导入数据

CREATE EXTERNAL TABLE zkpk.trainingset_log(EbayID STRING,QuantitySold INT,Price FLOAT,PricePercent FLOAT,StartingBidPercent FLOAT,SellerName STRING,SellerClosePercent DOUBLE,Category INT,PersonID STRING,StartingBid FLOAT,AvgPrice FLOAT,EndDay STRING,HitCount INT,AuctionAvgHitCount INT,ItemAuctionSellPercent INT,SellerSaleAvgPriceRatio DOUBLE,SellerAvg DOUBLE,SellerItemAvg INT,AuctionHitCountAvgRatio INT,BestOffer DOUBLE,IsHOF INT,ItemListedCount INT,AuctionCount INT,AuctionSaleCount INT,SellerAuctionCount INT,SellerAuctionSaleCount INT,AuctionMedianPrice FLOAT)ROW FORMAT DELIMITED FIELDS TERMINATED BY ','STORED AS TEXTFILE;load data inpath '/zkpk/raw/TrainingSet.csv' into table trainingset_log;

3. 对测试集创建外部表testset_log并导入数据

CREATE EXTERNAL TABLE zkpk.testset_log(EbayID STRING,QuantitySold INT,Price FLOAT,PricePercent FLOAT,StartingBidPercent FLOAT,SellerName STRING,SellerClosePercent DOUBLE,Category INT,PersonID STRING,StartingBid FLOAT,AvgPrice FLOAT,EndDay STRING,HitCount INT,AuctionAvgHitCount INT,ItemAuctionSellPercent INT,SellerSaleAvgPriceRatio DOUBLE,SellerAvg DOUBLE,SellerItemAvg INT,AuctionHitCountAvgRatio INT,BestOffer DOUBLE,IsHOF INT,ItemListedCount INT,AuctionCount INT,AuctionSaleCount INT,SellerAuctionCount INT,SellerAuctionSaleCount INT,AuctionMedianPrice FLOAT)ROW FORMAT DELIMITED FIELDS TERMINATED BY ','STORED AS TEXTFILE;load data inpath '/zkpk/raw/TestSet.csv' into table testset_log;

3 数据集分析处理

1. 统计 TrainingSet 中拍买成功交易的平均成交价并保存

CREATE TABLE avg_price(avg_price FLOAT)ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' STORED AS TEXTFILE;Insert OVERWRITE TABLE avg_priceSELECT avg(Price) FROM trainingset_log WHERE QuantitySold=1;

2. 统计 TrainingSet 中金牌卖家的拍卖成功率，降序排列并保存

CREATE TABLE success_rate_temp(SellerName STRING,Rate DOUBLE)ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' STORED AS TEXTFILE;INSERT OVERWRITE TABLE success_rate_temp SELECT SellerName,sum(QuantitySold)/count(QuantitySold)FROM trainingset_log WHERE IsHOF=1 GROUP BY SellerName;CREATE TABLE success_rate_desc(SellerName STRING,Rate DOUBLE)ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' STORED AS TEXTFILE;INSERT OVERWRITE TABLE success_rate_desc SELECT * FROM success_rate_temp ORDER BY Rate DESC;drop table success_rate_temp;

3. 统计TrainingSet和TestSet中周一到周日，每天拍卖成功的数量及拍卖成功率并保存

CREATE TABLE train_day_rate(EndDay STRING,Success INT,Rate DOUBLE) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' STORED AS TEXTFILE;INSERT OVERWRITE TABLE train_day_rate SELECT EndDay,sum(QuantitySold),sum(QuantitySold)/count(QuantitySold) FROM trainingset_log GROUP BY EndDay;

CREATE TABLE test_day_rate(EndDay STRING,Success INT,Rate DOUBLE) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' STORED AS TEXTFILE;INSERT OVERWRITE TABLE test_day_rate SELECT EndDay,sum(QuantitySold),sum(QuantitySold)/count(QuantitySold) FROM testset_log GROUP BY EndDay;

4. 筛选出TrainingSet和TestSet数据中的EbayID，Quantitiysold字段，保存为train_label文件和test_label文件

CREATE TABLE train_label(EbayID STRING, QuantitySold Int)ROW FORMAT DELIMITED FIELDS TERMINATED BY ','STORED AS TEXTFILE;INSERT OVERWRITE TABLE train_label SELECTEbayID, QuantitySold FROM trainingset_log;

CREATE TABLE test_label(EbayID STRING, QuantitySold Int)ROW FORMAT DELIMITED FIELDS TERMINATED BY ','STORED AS TEXTFILE;INSERT OVERWRITE TABLE test_label SELECTEbayID, QuantitySold FROM testset_log;

5. 从TrainingSet和TestSet数据中删除的SellerName，QuantiySold，EndDay字段，并将数据导出保存为train_data文件和test_data文件

CREATE TABLE train_data (EbayID STRING,Price FLOAT,PricePercent FLOAT,StartingBidPercent FLOAT,SellerClosePercent DOUBLE,Category INT,PersonID STRING,StartingBid FLOAT,AvgPrice FLOAT,HitCount INT,AuctionAvgHitCount INT,ItemAuctionSellPercent INT,SellerSaleAvgPriceRatio DOUBLE,SellerAvg DOUBLE,SellerItemAvg INT,AuctionHitCountAvgRatio INT,BestOffer DOUBLE,IsHOF INT,ItemListedCount INT,AuctionCount INT,AuctionSaleCount INT,SellerAuctionCount INT,SellerAuctionSaleCount INT,AuctionMedianPrice FLOAT)ROW FORMAT DELIMITED FIELDS TERMINATED BY ','STORED AS TEXTFILE;INSERT OVERWRITE TABLE train_data SELECT EbayID,Price,PricePercent,StartingBidPercent,SellerClosePercent,Category,PersonID,StartingBid,AvgPrice,HitCount,AuctionAvgHitCount,ItemAuctionSellPercent,SellerSaleAvgPriceRatio,SellerAvg,SellerItemAvg,AuctionHitCountAvgRatio,BestOffer,IsHOF,ItemListedCount,AuctionCount,AuctionSaleCount,SellerAuctionCount,SellerAuctionSaleCount,AuctionMedianPrice FROM trainingset_log;

CREATE TABLE test_data (EbayID STRING,Price FLOAT,PricePercent FLOAT,StartingBidPercent FLOAT,SellerClosePercent DOUBLE,Category INT,PersonID STRING,StartingBid FLOAT,AvgPrice FLOAT,HitCount INT,AuctionAvgHitCount INT,ItemAuctionSellPercent INT,SellerSaleAvgPriceRatio DOUBLE,SellerAvg DOUBLE,SellerItemAvg INT,AuctionHitCountAvgRatio INT,BestOffer DOUBLE,IsHOF INT,ItemListedCount INT,AuctionCount INT,AuctionSaleCount INT,SellerAuctionCount INT,SellerAuctionSaleCount INT,AuctionMedianPrice FLOAT)ROW FORMAT DELIMITED FIELDS TERMINATED BY ','STORED AS TEXTFILE;INSERT OVERWRITE TABLE test_data SELECT EbayID,Price,PricePercent,StartingBidPercent,SellerClosePercent,Category,PersonID,StartingBid,AvgPrice,HitCount,AuctionAvgHitCount,ItemAuctionSellPercent,SellerSaleAvgPriceRatio,SellerAvg,SellerItemAvg,AuctionHitCountAvgRatio,BestOffer,IsHOF,ItemListedCount,AuctionCount,AuctionSaleCount,SellerAuctionCount,SellerAuctionSaleCount,AuctionMedianPrice FROM testset_log;

4 数据集导出

1. 安装并配置MySQL环境

# 安装wgetyum -y install wget# 远程下载MySQL压缩包wget https://mirrors.tuna.tsinghua.edu.cn/mysql/downloads/MySQL-8.0/mysql-8.0.26-1.el8.aarch64.rpm-bundle.tar# 解压MySQL并安装tar -xvf mysql-8.0.26-1.el8.aarch64.rpm-bundle.taryum install *.rpm# 启动MySQL服务并查看运行状态systemstl start mysqlsystemstl status mysql# 设置开机启动MySQL服务systemctl enable mysqldsystemctl daemon-reload# 查看临时数据库密码grep 'temporary password' /var/log/mysqld.log# 修改密码 未修改密码策略ALTER USER 'root'@'localhost' IDENTIFIED BY '20001215,Cj';# 启动MySQL服务mysql -uroot -p

2. 设置远程连接用户：通过主机的Navicat for MySQL连接云服务器的MySQL

# 创建远程连接用户create user 'zkpk'@'%' identified by '20001215,Cj';# 授予用户权限grant all on *.* to 'zkpk'@'%';# 更改加密方式ALTER USER 'zkpk'@'%' IDENTIFIED BY '20001215,Cj' PASSWORD EXPIRE NEVER;# 刷新权限flush privileges;

3. 从HDFS导出数据到本地文件系统

# 查看表格在HDFS上的存储位置show create table 表格名;

# 查看表格在HDFS上的数据存放位置下的文件内容hadoop fs -ls location# 导出表格到本地文件系统hadoop fs -get location /home/zkpk/

4. 从HDFS导出数据到MySQL数据库

# 获取表格在HDFS的存储位置use zkpk;show create table 表格名;

# 将HDFS中文件存储到本地文件系统hadoop fs -get location /home/zkpk/result/# 登录MySQLmysql --local_infile=1 -u root -p

# 在MySQL中创建对应表格# 加载本地文件系统的表格到MySQLLOAD DATA LOCAL INFILE '/home/zkpk/result/textfile' INTO TABLE zkpk.表格名 FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n';

5 数据可视化展示

1. 安装配置miniconda，并管理依赖包

wget https://mirrors.tuna.tsinghua.edu.cn/anaconda/miniconda/Miniconda3-py39_4.11.0-Linux-aarch64.shsh Miniconda3-py39_4.11.0-Linux-aarch64.sh

# 进入conda环境conda activate# 加载依赖项conda install 依赖项# 运行python文件python 路径+文件名# 退出conda环境conda deactivate

2. 编写可视化程序

import pymysqlimport pandas as pdimport matplotlib.pyplot as pltdb = pymysql.connect(host='localhost', user='root', password='20001215,Cj', database='zkpk')cursor = db.cursor()sql = 'select EndDay, Success from train_day_rate'# sql = 'select EndDay, Rate from train_day_rate'# sql = 'select EndDay, Success from test_day_rate'# sql = 'select EndDay, Rate from test_day_rate'cursor.execute(sql)data = cursor.fetchall()cursor.close()db.close()print(data)df = pd.DataFrame(list(data),columns=['endDay', 'amount'])plt.figureplt.xlabel('day')plt.ylabel('amount')plt.bar(df['endDay'],df['amount'])plt.show()

3. 华为云DLV组件实现可视化展示

• 训练集拍卖成功数量与比例柱状图
• 测试集拍卖成功数量与比例柱状图

6 拍卖成功率预测

1. 从数据库获取数据集train_label，train_data，test_label，test_data

import pandas as pdimport numpy as npimport seaborn as snsimport matplotlib.pyplot as pltimport pymysqldef getdataset():    # 连接数据库    # db = pymysql.connect(host='localhost', user='root', password='20001215,Cj', database='zkpk')    db = pymysql.connect(host='124.70.59.198', user='zkpk', password='20001215,Cj', database='zkpk')    cursor = db.cursor()    # 读取数据集 训练集    sql = 'select * from train_data'    cursor.execute(sql)    data = cursor.fetchall()    train_set= pd.DataFrame(list(data),columns=['EbayID','Price', 'PricePercent', 'StartingBidPercent',                    'SellerClosePercent','Category','PersonID',                    'StartingBid', 'AvgPrice', 'HitCount',                      'AuctionAvgHitCount',                    'ItemAuctionSellPercent', 'SellerSaleAvgPriceRatio',                    'SellerAvg', 'SellerItemAvg', 'AuctionHitCountAvgRatio',                    'BestOffer', 'IsHOF', 'ItemListedCount',                    'AuctionCount', 'AuctionSaleCount',                    'SellerAuctionCount', 'SellerAuctionSaleCount',                    'AuctionMedianPrice'])    print("the shape of train_set:", train_set.shape)    #训练集label    sql = 'select QuantitySold from train_label'    cursor.execute(sql)    data = cursor.fetchall()    train_label= pd.DataFrame(list(data),columns=['QuantitySold'])    print("the shape of train_label:", train_label.shape)    #测试集    sql = 'select * from test_data'    cursor.execute(sql)    data = cursor.fetchall()    test_set= pd.DataFrame(list(data),columns=['EbayID','Price', 'PricePercent', 'StartingBidPercent',                    'SellerClosePercent','Category','PersonID',                    'StartingBid', 'AvgPrice', 'HitCount',                    'AuctionAvgHitCount',                    'ItemAuctionSellPercent', 'SellerSaleAvgPriceRatio',                    'SellerAvg', 'SellerItemAvg', 'AuctionHitCountAvgRatio',                    'BestOffer', 'IsHOF', 'ItemListedCount',                    'AuctionCount', 'AuctionSaleCount',                    'SellerAuctionCount', 'SellerAuctionSaleCount',                    'AuctionMedianPrice'])    #测试集label    sql = 'select QuantitySold from test_label'    cursor.execute(sql)    data = cursor.fetchall()    test_label= pd.DataFrame(list(data),columns=['QuantitySold'])    cursor.close()    db.close()    #去掉与拍卖成功概率无关的特征EbayID    train_data = train_set.drop(['EbayID'], axis=1)    test_data = test_set.drop(['EbayID'], axis=1)    n_items, n_features = train_data.shape    #the number of total features    train_data.head()    return train_set, train_data, train_label, test_data, test_label

2. 拍卖成功预测

随机小批量梯度下降法：minibatchSGDClassification.py

import pandas as pdimport matplotlib.pyplot as pltimport pymysqlimport numpy as npfrom GetDataSet import getdatasetfrom sklearn.linear_model import SGDClassifierfrom sklearn.preprocessing import StandardScalerfrom sklearn.metrics import precision_score, recall_score, f1_scoretrain_set, train_data, train_label, test_data, test_label = getdataset()# The results of mini_batch learning for SGDClassifier in the training process were drawndef plot_learning(clf, title):    plt.figure()    # Record the prediction of the last training result in this training    validationScore = []    # Record the forecast situation after adding this training result    trainScore = []    # Minimum training frequency    mini_batch = 1000    n_items = train_set.shape[0]    for i in range(int(np.ceil(n_items / mini_batch))):        x_batch = train_data[i * mini_batch: min((i + 1) * mini_batch, n_items)]        y_batch = train_label[i * mini_batch: min((i + 1) * mini_batch, n_items)]        if i > 0:            validationScore.append(clf.score(x_batch, y_batch))        clf.partial_fit(x_batch, y_batch, classes=range(5))        if i > 0:            trainScore.append(clf.score(x_batch, y_batch))        plt.plot(trainScore, label="train_score")        plt.plot(validationScore, label="validation_score")        plt.xlabel("Mini_batch")        plt.ylabel("Score")        plt.grid()        plt.title(title)        plt.savefig('test.jpg')# 对训练数据进行正则化scaler = StandardScaler()train_data = scaler.fit_transform(train_set.drop(['EbayID'], axis=1))#SGD二分类clf = SGDClassifier(penalty='l2', alpha=0.0004)plot_learning(clf, 'SGDClassifier')test_data = scaler.fit_transform(test_data)train_pred = clf.predict(train_data)test_pred = clf.predict(test_data)print("SGDClassifier training performance on testing dataset:")print("\tPrecision：%1.3f" % precision_score(test_label, test_pred, average='micro'))print("\tRecall：%1.3f" % recall_score(train_label, train_pred))print("\tF1：%1.3f \n" % f1_score(train_label, train_pred))

决策树：ExecutiveTree

import pandas as pdimport numpy as npimport seaborn as snsimport matplotlib.pyplot as pltimport pymysqlfrom sklearn import treefrom GetDataSet import getdatasettrain_set, train_data, train_label, test_data, test_label = getdataset()clf = tree.DecisionTreeClassifier()clf = clf.fit(train_data, train_label)print("Precision: ", clf.score(test_data, test_label))

逻辑回归：LogisticRegression.py

import pandas as pdimport numpy as npfrom sklearn.linear_model import LogisticRegression as LRfrom sklearn.preprocessing import StandardScalerfrom sklearn.metrics import classification_reportfrom GetDataSet import getdataset#获取数据集train_set, train_data, train_label, test_data, test_label = getdataset()#对train_data进行标准化std = StandardScaler()train_data = std.fit_transform(train_data)#进行逻辑回归二分类lg = LR(C=1.0)lg.fit(train_data, train_label)test_predict = lg.predict(test_data)print("准确率: " ,lg.score(test_data, test_label))

来源地址：https://blog.csdn.net/weixin_52430122/article/details/123619595