VisualC++与ODBC:机器学习驱动的资产定价编程入门

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本文将深入探讨ODBC数据库编程在empirical asset pricing(实证资产定价)中的应用,特别是通过机器学习技术来优化金融数据分析。ODBC(Open Database Connectivity),作为微软开放服务结构的一部分,提供了一套标准的API接口,使得开发者能够利用SQL(Structured Query Language)进行数据库访问,这在当前众多数据库应用中非常常见。 在Visual C++的背景下,章节1首先介绍了Visual C++开发环境,它是微软强大的可视化开发工具,尤其适用于Windows操作系统。Visual C++ 6.0因其稳定性和易用性深受开发者喜爱,它整合了编辑器、调试器、AppWizard(程序向导)和ClassWizard(类向导)等多种开发工具,形成了一个完整的集成开发环境。这个环境支持C++编程,同时提供了C语言兼容性,满足开发者在不同层次的需求。 C++语言是Visual C++的核心,作为C语言的扩展,它引入了面向对象和过程性编程的概念,增强了代码的复用性和灵活性。通过C++,开发者可以创建复杂的金融模型,处理大量数据并结合机器学习算法,如回归分析、神经网络等,用于预测和定价金融资产。 Windows API是Visual C++中的关键接口,它允许开发者与Windows系统底层紧密交互,实现数据库连接、数据操作和系统调用等功能。在empirical asset pricing中,这有助于高效地查询、处理和分析存储在ODBC兼容数据库中的金融数据。 本篇文档将引导读者如何在Visual C++环境中利用ODBC进行数据库编程,结合机器学习技术,解决实证资产定价问题。通过学习和实践,读者不仅能掌握基础的数据库操作,还能深入了解如何将这些技术应用于实际金融分析场景,提升数据驱动决策的能力。

Please revise the paper:Accurate determination of bathymetric data in the shallow water zone over time and space is of increasing significance for navigation safety, monitoring of sea-level uplift, coastal areas management, and marine transportation. Satellite-derived bathymetry (SDB) is widely accepted as an effective alternative to conventional acoustics measurements over coastal areas with high spatial and temporal resolution combined with extensive repetitive coverage. Numerous empirical SDB approaches in previous works are unsuitable for precision bathymetry mapping in various scenarios, owing to the assumption of homogeneous bottom over the whole region, as well as the limitations of constructing global mapping relationships between water depth and blue-green reflectance takes no account of various confounding factors of radiance attenuation such as turbidity. To address the assumption failure of uniform bottom conditions and imperfect consideration of influence factors on the performance of the SDB model, this work proposes a bottom-type adaptive-based SDB approach (BA-SDB) to obtain accurate depth estimation over different sediments. The bottom type can be adaptively segmented by clustering based on bottom reflectance. For each sediment category, a PSO-LightGBM algorithm for depth derivation considering multiple influencing factors is driven to adaptively select the optimal influence factors and model parameters simultaneously. Water turbidity features beyond the traditional impact factors are incorporated in these regression models. Compared with log-ratio, multi-band and classical machine learning methods, the new approach produced the most accurate results with RMSE value is 0.85 m, in terms of different sediments and water depths combined with in-situ observations of airborne laser bathymetry and multi-beam echo sounder.

2023-02-18 上传