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Clustering analysis is a fundamental statistical method for grouping similar data points, widely used in fields like economics and research. This article explains two main clustering techniques in SPSS - K-means and hierarchical clustering - with practical examples and result interpretation. (聚类分析是一种将相似数据点分组的基本统计方法，广泛应用于经济和科研领域。本文详细讲解了SPSS中的两种主要聚类技术——K均值聚类和系统聚类，并提供了实际案例和结果解读方法。)

This content appears to be a list of events or activities in Seattle with French and English text, but lacks substantive information about social media algorithm AI optimization. The provided data includes location names, follower counts, and pricing details for various local entities, but does not contain technical content about AI optimization of social media algorithms. (中文摘要翻译：此内容似乎是西雅图活动列表，包含法语和英语文本，但缺乏关于社交媒体算法AI优化的实质性信息。提供的数据包括地点名称、关注者数量和各类本地实体的价格详情，但不包含关于社交媒体算法AI优化的技术内容。)

A query is a script used to request or modify data in a database, essential for programming and data analysis. This article explains SQL queries through practical examples, covering basic operations like SELECT, INSERT, UPDATE, and DELETE, and discusses their advantages and common commands. (查询是用于请求或修改数据库中数据的脚本，对编程和数据分析至关重要。本文通过实际示例解释SQL查询，涵盖SELECT、INSERT、UPDATE和DELETE等基本操作，并讨论其优势和常用命令。)