پیش‌بینی جهت حرکت قیمت بیت‌کوین پس از بیش‌واکنش سرمایه‌گذاران با بهره‌گیری از مدل‌ یادگیری عمیق چندمتغیره

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه مهندسی صنایع، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 استاد، گروه مهندسی صنایع، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

3 دانشیار، گروه مهندسی مالی، دانشکده مهندسی صنایع، دانشگاه صنعتی خواجه نصیر، تهران، ایران

چکیده
این پژوهش با هدف پیش‌بینی جهت حرکت قیمت بیت‌کوین پس از وقوع پدیده «بیش‌واکنش سرمایه‌گذاران» انجام شده است؛ پدیده‌ای که در ادبیات مالی رفتاری به‌عنوان یک ناهنجاری کلیدی شناخته می‌شود. با بهره‌گیری از رویکرد داده‌های چندوجهی، مجموعه‌ای از اطلاعات معاملاتی، شاخص‌های فنی، داده‌های درون‌زنجیره‌ای و شاخص‌های اجتماعی طی بازه اوت ۲۰۱۷ تا دسامبر ۲۰۲۳ تحلیل شد. پس از شناسایی ۳۰۳ روز بیش‌واکنش، فرآیند انتخاب ۱۱ ویژگی کلیدی از میان ۱۵۸ متغیر طی یک رویکرد سه‌مرحله‌ای شامل الگوریتم جنگل تصادفی، بررسی ماتریس همبستگی و محاسبه شاخص تورم واریانس (VIF) انجام شد تا ضمن اطمینان از نبود هم‌خطی چندگانه، مجموعه‌ای بهینه و معتبر برای ورود به مدل فراهم گردد. مدل پیشنهادی مبتنی بر شبکه عصبی حافظه بلند–کوتاه‌مدت (LSTM) چندمتغیره، با دقت ۶۷٪ جهت حرکت قیمت را پیش‌بینی کرد که به‌طور معناداری بالاتر از دقت مدل رگرسیون لجستیک (۵۳.۴٪) است. همچنین، روند کاهشی و باثبات تابع زیان آموزشی و آزمایشی، عدم بروز بیش‌برازش و توانایی مدل در یادگیری الگوهای واقعی را اثبات نمود. یافته‌ها حاکی از وجود ناکارایی‌های کوتاه‌مدت در بازار بیت‌کوین و قابلیت پیش‌بینی بازده‌های غیرعادی پس از بیش‌واکنش (در سطح اطمینان ۹۹٪) است. این چارچوب می‌تواند در طراحی استراتژی‌های معاملاتی و مدیریت ریسک هوشمند در بازارهای رمزارز به‌کار گرفته شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله English

Predicting Post-Overreaction Price Movements in Bitcoin Using Multivariate Deep Learning Model

نویسندگان English

Marjan Sadat Fatemi Ghomi 1
َAbbas Saghaei 2
Majid Mirzaei ghazaani 3
1 Ph.D. Student, Department of Industrial Engineering, SR.C., Islamic Azad University, Tehran, Iran
2 Professor, Department of Industrial Engineering, SR.C., Islamic Azad University, Tehran, Iran
3 Associate Professor, Department of Industrial Engineering, K. N. Toosi University of Technology, Tehran, Iran
چکیده English

This research investigates the predictability of Bitcoin price directions following investor overreaction, a prominent anomaly widely documented in behavioral finance. Leveraging a multimodal dataset—integrating transactional variables, technical indicators, on-chain metrics, and social signals derived from Google Trends—this study analyzes market dynamics from August 2017 to December 2023 and identifies 303 distinct overreaction episodes. To construct a reliable predictive framework, a rigorous three stage feature selection pipeline was implemented, combining Random Forest screening, correlation matrix analysis, and Variance Inflation Factor (VIF) assessment. This process yielded 11 highly informative and non multicollinear variables that served as the input features for the proposed multivariate Long Short Term Memory (LSTM) model. The LSTM model achieved a directional prediction accuracy of 67%, substantially outperforming the classical Logistic Regression benchmark with 53.4% accuracy. Moreover, the consistently declining and stable training and validation loss curves demonstrate strong generalization performance and confirm the model’s robustness against overfitting. Empirical findings reveal statistically significant short term market inefficiencies and predictable abnormal returns following overreaction events at the 99% confidence level. Overall, the study provides compelling evidence of exploitable behavioral patterns within the Bitcoin market and offers a practical foundation for developing advanced algorithmic trading strategies and dynamic risk management systems in cryptocurrency markets.

کلیدواژه‌ها English

Bitcoin Market
Deep Learning
Investor Overreaction
Price Prediction
Multimodal Features
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