快速、简洁、解决大文件内存溢出的java处理Excel工具

I use Python3 to try the experiments on the classic book <Options, Futures and other Derivatives>, the BS model and the sensitivity analysis on Greek Letters.

quant strategy backtesting from pobo financial

机器学习相关

Writing Fast Parsers Fast in Scala

A simple optimizing Brainfuck compiler (used as the demo for my QCon Beijing 2015 talk)

A playground for experimenting ideas that may apply to Spark SQL/Catalyst

Apache Spark - A unified analytics engine for large-scale data processing

数据挖掘、计算机视觉、自然语言处理、推荐系统竞赛知识、代码、思路

目前市面的全链路监控系统基本都是参考Google的Dapper来做的，本专题主要通过六个章节的代码实战，来介绍如何使用javaagent以及字节码应用，来实现一个简单的java代码链路流程监控。 章节列表 - 基于JavaAgent的全链路监控一《嗨！JavaAgent》 - 基于JavaAgent的全链路监控二《通过字节码增加监控执行耗时》 - 基于JavaAgent的全链路监控三《Byt…

The 3rd edition of course.fast.ai

🍬A set of tools that keep Java sweet.

A full-featured utility for managing Windows Subsystem for Linux (WSL)

A high performance scripting language hosted on the JVM.

opencv处理图片，灰度化、二值化、降噪、切割、归一、矫正

Java Orm Framework

基于JAVA的轻量级ORM框架(A lightweight ORM framework for JAVA)。

轻量级ORM框架，零配置，快速开发，对基础的JDBC进行封装，支持多种数据库如：oracle，MySQL，SQL Server，sqlite；数据库事务，读写分离。

给flink开发的web系统。支持页面上定义udf，进行sql和jar任务的提交；支持source、sink、job的管理；可以管理openshift上的flink集群

TiDB - the open-source, cloud-native, distributed SQL database designed for modern applications.

SeaTunnel is a multimodal, high-performance, distributed, massive data integration tool.

基于Redis的延迟队列系统

Java unlimited redefinition of classes at runtime.

动态的加载drools规则的demo

online test platform

QLExpress is a powerful, lightweight, dynamic language for the Java platform aimed at improving developers’ productivity in different business scenes.

Stream Processing with Apache Flink - Java Examples

由于笔者觉得flink的一些api太难记了，就写了这个工具包，将一些常用函数放在一块方便调用。

A data integration framework

flink learning blog. http://www.54tianzhisheng.cn/ 含 Flink 入门、概念、原理、实战、性能调优、源码解析等内容。涉及 Flink Connector、Metrics、Library、DataStream API、Table API & SQL 等内容的学习案例，还有 Flink 落地应用的大型项目案例（PVUV、日志存储、百亿数据实时去…