Snobol4 语言 实战 开发数据预处理与特征工程工具实战

Snobol4 语言实战：开发数据预处理与特征工程工具

Snobol4 是一种古老的编程语言，最初在1962年由David J. Farber、Ralph E. Griswold 和 Ivan P. Polonsky 设计。尽管它已经不再广泛使用，但Snobol4 在数据处理和文本处理方面有着独特的优势。本文将探讨如何使用Snobol4 语言开发数据预处理与特征工程工具，以实现数据科学项目中的基本需求。

Snobol4 简介

Snobol4 是一种高级编程语言，以其强大的字符串处理能力而闻名。它具有以下特点：

- 强大的字符串处理功能
- 简单的语法和易于理解的控制结构
- 内置的文本处理函数
- 支持正则表达式

数据预处理与特征工程工具

数据预处理和特征工程是数据科学项目中的关键步骤。这些步骤包括数据清洗、数据转换、特征提取等。以下将使用Snobol4 语言实现一些基本的数据预处理和特征工程工具。

1. 数据清洗

数据清洗是数据预处理的第一步，目的是去除数据中的噪声和不一致。以下是一个使用Snobol4 实现的数据清洗示例：

```snobol
:clean
input line
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