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We introduce a general class of stochastic processes driven by a multifractional Brownian motion (mBm) and study the estimation problems of their pointwise H\"older exponents (PHE) based on a new localized generalized quadratic variation…

数理金融 · 定量金融 2018-10-17 Qidi Peng , Ran Zhao

Recently, deep learning in stock prediction has become an important branch. Image-based methods show potential by capturing complex visual patterns and spatial correlations, offering advantages in interpretability over time series models.…

机器学习 · 计算机科学 2024-10-30 Zhiyuan Pei , Jianqi Yan , Jin Yan , Bailing Yang , Ziyuan Li , Lin Zhang , Xin Liu , Yang Zhang

Our research presents a new approach for forecasting the synchronization of stock prices using machine learning and non-linear time-series analysis. To capture the complex non-linear relationships between stock prices, we utilize recurrence…

统计金融 · 定量金融 2024-09-12 Sanjay Sathish , Charu C Sharma

Regression methods for interval-valued data have been increasingly studied in recent years. As most of the existing works focus on linear models, it is important to note that many problems in practice are nonlinear in nature and therefore…

统计方法学 · 统计学 2022-01-11 Chih-Ching Yeh , Yan Sun , Adele Cutler

This study proposes a novel hybrid deep learning framework that integrates a Large Language Model (LLM) with a Transformer architecture for stock price forecasting. The research addresses a critical theoretical gap in existing approaches…

Support vector regression (SVR) has been widely used to reduce the high computational cost of computer simulation. SVR assumes the input parameters have equal sample sizes, but unequal sample sizes are often encountered in engineering…

信号处理 · 电气工程与系统科学 2021-11-09 Maolin Shi , Wei Sun , Xueguan Song , Hongyou Li

For the development of successful share trading strategies, forecasting the course of action of the stock market index is important. Effective prediction of closing stock prices could guarantee investors attractive benefits. Machine…

统计金融 · 定量金融 2021-04-16 Nazish Ashfaq , Zubair Nawaz , Muhammad Ilyas

Data Mining is being actively applied to stock market since 1980s. It has been used to predict stock prices, stock indexes, for portfolio management, trend detection and for developing recommender systems. The various algorithms which have…

神经与进化计算 · 计算机科学 2013-02-06 Savinderjit Kaur , Veenu Mangat

We consider the problem of neural network training in a time-varying context. Machine learning algorithms have excelled in problems that do not change over time. However, problems encountered in financial markets are often time-varying. We…

计算金融 · 定量金融 2021-01-25 Steven Y. K. Wong , Jennifer Chan , Lamiae Azizi , Richard Y. D. Xu

We develop a novel multivariate semi-parametric framework for joint portfolio Value-at-Risk (VaR) and Expected Shortfall (ES) forecasting. Unlike existing univariate semi-parametric approaches, the proposed framework explicitly models the…

风险管理 · 定量金融 2024-12-23 Giuseppe Storti , Chao Wang

This study proposes a new framework to evolve efficacious yet parsimonious neural architectures for the movement prediction of stock market indices using technical indicators as inputs. In the light of a sparse signal-to-noise ratio under…

神经与进化计算 · 计算机科学 2021-11-17 Faizal Hafiz , Jan Broekaert , Davide La Torre , Akshya Swain

Stock market volatility forecasting is a task relevant to assessing market risk. We investigate the interaction between news and prices for the one-day-ahead volatility prediction using state-of-the-art deep learning approaches. The…

统计金融 · 定量金融 2018-12-31 Marcelo Sardelich , Suresh Manandhar

We present a deep long short-term memory (LSTM)-based neural network for predicting asset prices, together with a successful trading strategy for generating profits based on the model's predictions. Our work is motivated by the fact that…

统计金融 · 定量金融 2019-05-09 Chariton Chalvatzis , Dimitrios Hristu-Varsakelis

This paper deals with inference and prediction for multiple correlated time series, where one has also the choice of using a candidate pool of contemporaneous predictors for each target series. Starting with a structural model for the…

机器学习 · 统计学 2018-09-20 S. Rao Jammalamadaka , Jinwen Qiu , Ning Ning

Predicting fund performance is beneficial to both investors and fund managers, and yet is a challenging task. In this paper, we have tested whether deep learning models can predict fund performance more accurately than traditional…

统计金融 · 定量金融 2023-08-01 Nghia Chu , Binh Dao , Nga Pham , Huy Nguyen , Hien Tran

This paper tries to address the problem of stock market prediction leveraging artificial intelligence (AI) strategies. The stock market prediction can be modeled based on two principal analyses called technical and fundamental. In the…

统计金融 · 定量金融 2021-07-05 Sohrab Mokhtari , Kang K. Yen , Jin Liu

Stock exchanges are considered major players in financial sectors of many countries. Most Stockbrokers, who execute stock trade, use technical, fundamental or time series analysis in trying to predict stock prices, so as to advise clients.…

统计金融 · 定量金融 2015-02-24 B. W. Wanjawa , L. Muchemi

The stock market is a crucial component of the financial system, but predicting the movement of stock prices is challenging due to the dynamic and intricate relations arising from various aspects such as economic indicators, financial…

统计金融 · 定量金融 2024-02-13 Hao Qian , Hongting Zhou , Qian Zhao , Hao Chen , Hongxiang Yao , Jingwei Wang , Ziqi Liu , Fei Yu , Zhiqiang Zhang , Jun Zhou

This paper introduces a novel meta-learning algorithm for time series forecast model performance prediction. We model the forecast error as a function of time series features calculated from the historical time series with an efficient…

应用统计 · 统计学 2022-07-11 Thiyanga S. Talagala , Feng Li , Yanfei Kang

Accurate modeling of inter-stock relationships is critical for stock price forecasting. However, existing methods predominantly focus on single-state relationships, neglecting the essential complementarity between dynamic and static…

机器学习 · 计算机科学 2025-10-14 Long Chen , Huixin Bai , Mingxin Wang , Xiaohua Huang , Ying Liu , Jie Zhao , Ziyu Guan