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Data Analysis and Knowledge Discovery  2018, Vol. 2 Issue (6): 1-12    DOI: 10.11925/infotech.2096-3467.2017.1174
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Impacts of “Poster-Follower” Sentiment on Stock Market Performance
Zhang Ning, Yin Lemin(), He Lifeng
School of Business, Qingdao University, Qingdao 266071, China
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Abstract  

[Objective] The paper investigates the relationship between the “Bullish Sentiment Index” (BSI) of online reviews/following comments and the performance of stock market. [Methods] First, we conducted sentiment classification for comments on Shanghai Stock Exchange Composite Index using semantic analysis method. Then, we built the sentiment tendencies of these reviews and constructed their “Poster-Follower” BSI. Finally, we used linear and nonlinear models to examine the proposed method empirically. [Results] The BSI based on our proposed method (text mining) could effectively predict the stock market trend, especially on its returns. [Limitations] We only consider two emotional polarities and more research is needed to enhance the sentimental strength. [Conclusions] The Bullish Sentiment Index could effectively predict the overall stock market trend by measuring investors’ sentiment.

Key wordsStock Comment      Stock Comment Attention Rate      Text Mining      Investor Sentiment     
Received: 22 November 2017      Published: 11 July 2018
ZTFLH:  G35  

Cite this article:

Zhang Ning,Yin Lemin,He Lifeng. Impacts of “Poster-Follower” Sentiment on Stock Market Performance. Data Analysis and Knowledge Discovery, 2018, 2(6): 1-12.

URL:

https://manu44.magtech.com.cn/Jwk_infotech_wk3/EN/10.11925/infotech.2096-3467.2017.1174     OR     https://manu44.magtech.com.cn/Jwk_infotech_wk3/EN/Y2018/V2/I6/1

统计指标 均值 标准差 最大值 最小值
评论标题长度(字) 17.042 5.33 36 2
评论内容长度(字) 363.349 562.503 12875 2
评论关注度(万次) 1.583 13.232 653.984 0.012
每日发帖数量(条) 252.459 207.733 1373 3
每日关注数量(万次) 453.977 446.926 2972.288 7.217
情感倾向 指标 分类效果
看涨 召回率 94.6%
准确率 90.6%
F值 92.7%
看跌 召回率 93.5%
准确率 89.6%
F值 91.5%
均值 标准差 最大值 最小值
每日看涨评论数量(条) 143.00 118.67 889 1
每日看跌评论数量(条) 108.98 111.44 635 2
合成方法
调整方法
加法合成 乘法合成
对数调整 $S{{V}_{la}}=1+\ln (1+n)$ $S{{V}_{lm}}=1\times \ln (e+n)$
比值调整 $S{{V}_{ra}}=1+\frac{n}{\mathop{\sum }^{}n}$ $S{{V}_{rm}}=1\times \frac{n}{\mathop{\sum }^{}n}$
变量性质 变量名称 变量符号 变量描述
被解释变量 当日上证综合指数 CIt 上证综合指数的当日收盘价
当日上证指数收益率 Rt 上证综合指数的当日收益率
解释变量 当日投资者情绪指数 BSIt 基于文本挖掘的“发布者-关注者”当日综合情绪指标
前一日投资者情绪指数 BSIt-1 基于文本挖掘的“发布者-关注者”前一日综合情绪指标
控制变量 波动率 FR 上证市场一个交易日中股票收益的变化程度
换手率 TR 上证市场一个交易日中股票转手买卖的频率
前一日上证综合指数 CIt-1 上证综合指数的前一日收盘价
变量 M1 BSIla BSIlm BSIra BSIrm
M2 M3 M4 M2 M3 M4 M2 M3 M4 M2 M3 M4
系数 系数 系数 系数 系数 系数 系数 系数 系数 系数 系数 系数 系数
(t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值)
BSI1t 123.018*** 124.322*** 165.589*** 59.520***
(9.352) (-9.415) (-12.013) (-6.263)
BSI1(t-1) -53.927*** -50.790*** -77.985*** -13.733
(-4.102) (-3.862) (-5.682) (-1.453)
BSI2t 20.055*** 20.661*** 35.956*** 30.154***
(8.104) (-8.26) (-11.506) (-5.69)
BSI2(t-1) -8.395*** -8.212*** -16.845*** -3.138
(3.370) (-3.270) (-5.397) (-0.583)
BSI3t 61.384*** 62.163*** 82.794*** 29.781***
(9.318) (-9.415) (-12.013) (-6.27)
BSI3(t-1) -26.990*** -25.397*** -38.992*** -6.894
(-4.099) (-3.862) (-5.682) (-1.460)
TR 26.038*** 21.900*** 22.794*** 21.784*** 21.702*** 22.785*** 21.703*** 19.940*** 19.532*** 19.940*** 21.871*** 22.477*** 21.871***
(5.323) (5.050) (5.117) (5.013) (-5.034) (-5.159) (-5.034) (-4.94) (-4.726) (-4.94) (-4.744) (-4.802) (-4.745)
FR -18.104*** -16.033*** -16.957*** -16.000*** -15.786*** -16.783*** -15.786*** -14.292*** -14.383*** -14.292*** -16.120*** -15.870*** -16.126***
(-7.202) (-7.269) (-7.486) (-7.241) (-7.161) (-7.440) (-7.161) (-6.974) (-6.868) (-6.974) (-6.775) (-6.496) (-6.780)
CIt-1 0.888*** 0.903*** 0.898*** 0.903*** 0.904*** 0.899*** 0.904*** 0.908*** 0.907*** 0.908*** 0.892*** 0.889*** 0.892***
(48.314) (57.627) (55.295) (57.564) (-57.791) (-55.599) (-57.791) (-62.967) (-61.919) (-62.967) (-52.028) (-51.123) (-52.041)
常数项 306.752*** 223.635*** 275.881*** 258.798*** 219.170*** 272.781*** 255.947*** 198.677*** 246.595*** 242.479*** 270.757*** 302.424*** 293.549***
(5.640) (4.717) (5.741) (5.571) (-4.621) (-5.702) (-5.526) (-4.575) (-5.684) (-5.678) (-5.339) (-5.882) (-5.798)
F 28.539*** 46.424*** 34.778*** 46.118*** 47.255*** 36.252*** 47.257*** 77.309*** 71.110*** 77.309*** 20.208*** 16.323*** 20.258***
R2 0.931 0.951 0.947 0.951 0.951 0.948 0.951 0.959 0.957 0.959 0.941 0.94 0.941
ΔR2 0.931*** 0.020*** 0.016*** 0.020*** 0.020*** 0.016*** 0.020*** 0.028*** 0.026*** 0.028*** 0.010*** 0.009*** 0.010***
变量 M1 BSIla BSIlm BSIra BSIrm
M2 M3 M4 M2 M3 M4 M2 M3 M4 M2 M3 M4
系数 系数 系数 系数 系数 系数 系数 系数 系数 系数 系数 系数 系数
(t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值) (t值)
BSI1t 4.421*** 4.475*** 5.858*** 2.040***
(9.330) (-9.455) (-11.779) (-5.923)
BSI1(t-1) -1.917*** -1.806*** -2.880*** -0.621
(-4.064) (-3.821) (-5.835) (-1.826)
BSI2t 0.713*** 0.736*** 1.272*** 1.013***
(7.995) (-8.173) (-11.281) (-5.267)
BSI2(t-1) -0.307*** -0.300*** -0.622*** -0.209
(-3.416) (-3.311) (-5.538) (-1.076)
BSI3t 2.205*** 2.237*** 2.929*** 1.021***
(9.370) (-9.455) (-11.779) (-5.932)
BSI3(t-1) -0.962*** -0.903*** -1.440*** -0.311
(-4.055) (-3.822) (-5.835) (-1.832)
TR 0.554*** 0.446** 0.469** 0.442** 0.440** 0.469** 0.440** 0.404** 0.387** 0.404** 0.431** 0.451** 0.431**
(3.286) (2.937) (3.031) (2.971) (-2.953) (-3.066) (-2.953) (-2.859) (-2.677) (-2.859) (-2.683) (-2.756) (-2.684)
FR -0.391*** -0.342*** -0.369*** -0.341*** -0.334*** -0.363*** -0.334*** -0.295*** -0.297*** -0.295*** -0.336*** -0.328*** -0.336***
(-4.631) (-4.582) (-4.809) (-4.607) (-4.505) (-4.765) (-4.505) (-4.230) (-4.162) (-4.230) (-4.145) (-3.914) (-4.150)
常数项 -0.593 -2.008*** -0.691* -0.748** -2.120*** -0.724* -0.786** -2.307*** -0.760** -0.818** -1.341*** -0.628* -0.632*
(-1.777) (-2.634) (-2.341) (-4.768) (-4.897) (-2.464) (-2.773) (-5.548) (-2.861) (-3.127) (-3.271) (-1.982) (-2.018)
F 11.980*** 46.563*** 34.081*** 46.238*** 47.615*** 35.709*** 47.615*** 75.529*** 69.446*** 75.529*** 18.659*** 14.390*** 18.718***
R2 0.093 0.353 0.299 0.351 0.357 0.306 0.357 0.451 0.433 0.451 0.219 0.193 0.219
ΔR2 0.093*** 0.260*** 0.206*** 0.259*** 0.264*** 0.214*** 0.264*** 0.358*** 0.340*** 0.358*** 0.126*** 0.100*** 0.126***
变量 模型三(因变量为CI) 模型四(因变量为R)
M1(PBSI1) M2(PBSI2) M3(PBSI3) M4(PBSI4) M5(PBSI5) M6(PBSI6)
系数
(t值)
系数
(t值)
系数
(t值)
系数
(t值)
系数
(t值)
系数
(t值)
PBSI1t 145.850***
(7.315)
5.297***
(7.452)
PBSI1(t-1) -90.081***
(-4.609)
-3.211***
(-4.587)
PBSI1t×ATTt 0.059*
(2.007)
0.002*
(2.188)
PBSI1(t-1)×ATTt-1 -0.004
(-0.131)
0.000
(0.084)
PBSI2t 30.313***
(6.683)
1.107***
(6.771)
PBSI2(t-1) -20.523***
(-4.596)
-0.732***
(-4.523)
PBSI2t×ATTt 0.016*
(2.419)
0.001**
(2.584)
PBSI2(t-1)×ATTt-1 -0.001
(-0.188)
0.000
(0.074)
PBSI3t 71.315***
(7.182)
2.633***
(7.383)
PBSI3(t-1) -47.989***
(-4.932)
-1.697***
(-4.821)
PBSI3t×ATTt 0.032*
(2.204)
0.001*
(2.293)
PBSI3(t-1)×ATTt-1 0.000
(0.032)
0.000
(0.253)
ATTt-1 -0.007
(-0.364)
-0.010?
(-1.653)
-0.011?
(-1.756)
-0.000
(-0.136)
-0.000
(-0.335)
-0.000
(-0.414)
ATTt -0.031?
(-1.683)
-0.007
(-1.102)
-0.005
(-0.771)
-0.001
(-1.511)
0.000
(0.048)
0.000
(0.425)
TR 21.023***
(4.926)
21.168***
(4.932)
21.322***
(5.062)
0.376*
(2.609)
0.353*
(2.408)
0.363*
(2.534)
FR -14.154***
(-6.931)
-13.471***
(-6.478)
-13.351***
(-6.515)
-0.316***
(-4.523)
-0.294***
(-4.035)
-0.293***
(-4.076)
CIt-1 0.907***
(57.510)
0.897***
(56.140)
0.899***
(56.860)
常数项 223.208***
(4.454)
282.514***
(5.920)
275.968***
(5.836)
-1.789**
(-2.867)
-0.614*
(-2.151)
-0.690*
(-2.442)
F 2.017? 2.927? 2.436? 2.408? 3.371* 2.689?
R2 0.960 0.959 0.960 0.496 0.486 0.500
预测模型 输出变量 输入变量 MSE
SVM _CI _Base 上证综合指数CIt 控制变量(CIt-1TRFR) 480.38
SVM _CI _BSI1 控制变量、BSI1tBSI1(t-1) 421.45
SVM _CI _ BSI2 控制变量、BSI2t、BSI2(t-1) 437.28
SVM _CI _ BSI3 控制变量、BSI3t、BSI3(t-1) 440.15
SVM _R _Base 上证综指收益率Rt 控制变量(TRFR) 0.58
SVM _R _ BSI1 控制变量、BSI1tBSI1(t-1) 0.45
SVM _R _BSI2 控制变量、BSI2t、BSI2(t-1) 0.43
SVM _R _BSI3 控制变量、BSI3t、BSI3(t-1) 0.47
RF _CI _Base 上证综合指数CIt 控制变量(CIt-1TRFR) 2633.16
RF _CI _BSI1 控制变量、BSI1tBSI1(t-1) 2034.15
RF _CI _BSI2 控制变量、BSI2tBSI2(t-1) 2126.18
RF _CI _BSI3 控制变量、BSI3tBSI3(t-1) 2301.17
RF _R _Base 上证综指收益率Rt 控制变量(TRFR) 0.54
RF _R _BSI1 控制变量、BSI1tBSI1(t-1) 0.34
RF _R _BSI2 控制变量、BSI2tBSI2(t-1) 0.33
RF _R _BSI3 控制变量、BSI3tBSI3(t-1) 0.34
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