Skip to main content

Table 3 The adjusted R2 of existing models and new models

From: Can the Baidu Index predict realized volatility in the Chinese stock market?

 

Short-term

Medium-term

Long-term

 

h = 1

h = 5

h = 10

h = 22

h = 44

h = 66

 

Before

After

Delta

Before

After

Delta

Before

After

Delta

Before

After

Delta

Before

After

Delta

Before

After

Delta

HAR-RV-type

0.317

0.331

0.014

0.478

0.509

0.030

0.491

0.535

0.044

0.428

0.497

0.069

0.266

0.394

0.128

0.188

0.357

0.169

HAR-RV-J-type

0.325

0.336

0.011

0.512

0.534

0.022

0.518

0.553

0.035

0.455

0.513

0.058

0.285

0.401

0.116

0.198

0.358

0.160

HAR-CJ-type

0.346

0.354

0.008

0.539

0.556

0.018

0.551

0.580

0.029

0.494

0.543

0.049

0.302

0.412

0.111

0.203

0.361

0.158

PS-type

0.321

0.333

0.012

0.495

0.521

0.026

0.502

0.541

0.039

0.442

0.505

0.063

0.276

0.397

0.121

0.193

0.357

0.164

PSLev-type

0.324

0.335

0.011

0.509

0.533

0.023

0.514

0.551

0.037

0.452

0.512

0.060

0.284

0.401

0.118

0.197

0.359

0.161

HAR-RSV-type

0.339

0.348

0.009

0.519

0.539

0.020

0.531

0.564

0.033

0.477

0.530

0.053

0.291

0.405

0.114

0.198

0.360

0.162

HAR-RSV-J-type

0.340

0.349

0.008

0.531

0.549

0.018

0.542

0.571

0.030

0.485

0.535

0.050

0.297

0.407

0.110

0.201

0.360

0.159

HAR-RV-SJ-type

0.325

0.336

0.011

0.513

0.534

0.022

0.517

0.552

0.035

0.455

0.513

0.057

0.285

0.401

0.115

0.198

0.358

0.160

HAR-CSJ-type

0.347

0.355

0.008

0.541

0.557

0.017

0.553

0.580

0.027

0.497

0.544

0.047

0.303

0.412

0.109

0.205

0.362

0.157

HAR-RV-SJd-type

0.326

0.337

0.011

0.512

0.534

0.022

0.517

0.552

0.035

0.455

0.513

0.058

0.285

0.401

0.116

0.197

0.358

0.160

HAR-CSJd-type

0.356

0.361

0.006

0.544

0.559

0.014

0.555

0.580

0.025

0.499

0.543

0.045

0.308

0.412

0.104

0.208

0.361

0.153

  1. This table presents the adjusted R2 of existing models (1) to (11) in the column “Before”, new models (12) to (22) with investor attention in the column “After” and difference in the column “Delta”. The horizon of 1, 5, 10, 22, 44, 66 days cover the short-term, medium-term and long-term