<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en"><generator uri="https://jekyllrb.com/" version="4.4.1">Jekyll</generator><link href="https://xinhaidong.top/feed.xml" rel="self" type="application/atom+xml" /><link href="https://xinhaidong.top/" rel="alternate" type="text/html" hreflang="en" /><updated>2026-07-01T00:11:03+08:00</updated><id>https://xinhaidong.top/feed.xml</id><title type="html">Haidong Xin</title><subtitle>Algorithm Engineer at OpenBMB and TsinghuaNLP. Researching in NLP, IR, RAG, RecSys, and Multi-agent Systems.</subtitle><author><name>Haidong Xin</name><email>hdxin2002@gmail.com</email></author></feed>