Core Viewpoint - The company has announced the open-sourcing of its recommendation algorithm for X, aiming to enhance transparency and invite community collaboration in its optimization efforts [1]. Group 1: Algorithm Overview - The recommendation algorithm consists of components such as Home Mixer, Thunder, and Phoenix, focusing on sorting information from "followed accounts" and "content mined from the web" using a Grok-based Transformer model [3]. - A notable feature of the algorithm is the elimination of all manually designed features and heuristic rules, relying solely on the model to learn correlations from user interaction history [5]. Group 2: Algorithm Functionality - The algorithm's workflow involves capturing user behavior data, sourcing candidate content from two channels, and applying data augmentation and multi-round filtering to predict user engagement probabilities (likes, shares, etc.), ultimately calculating a final score for content presentation [5]. - The implementation of X's recommendation algorithm is done using Rust and Python, and it is licensed under the Apache-2.0 license. As of now, it has received 1.1k stars and 195 forks on GitHub [5].

每经记者｜岳楚鹏 每经编辑｜程鹏 高涵 ①【三大期指齐跌】截至发稿，道指期货跌1.64%，标普500指数期货跌1.82%，纳指期货跌2.25%。 ②【欧洲考虑抛售万亿美元资产，热门科技股普跌】热门科技股盘前普跌。截至发稿，英伟达下跌3.06%，特斯拉下跌2.88%，美光下跌2.08%，AMD下 跌3.51%，亚马逊下跌3.08%，谷歌下跌3.22%。消息面上，特朗普通过社交媒体宣布，从2月1日起，美国将对包括丹麦、德国、法国、英国等8个欧洲国 家加征10%关税。欧洲国家正考虑采取报复性关税及更广泛的经济反制措施，包括数万亿美元级别的资产抛售。 ③【中概股普跌】 中概股盘前普跌。截至发稿，阿里巴巴下跌2.53%，拼多多下跌3.79%，携程下跌1.14%。 ④【美银上调IBM目标价至335美元】当地时间1月19日，美国银行证券分析师Wamsi Mohan发表研报，将IBM目标价从315美元上调至335美元，同时维 持"买入"评级。美银表示，IBM拥有强劲的自由现金流前景，同时高利润率软件业务占比提升，这将抵消短期面临的不利因素。美银预计2026年IBM营收 增幅将达到5%，增长动力主要来自软件业务的强劲表现，以及 ...

- HOME HIXER (Orchestration Layer) User Features (following list, pe THINDER (In-Network Posts) PHOENIX RETRIEVAL (Cut-of-Network Post Posts from accounts based sinilarity nel data: core post actadata, author Info, old posts, self-posts, blocked aut suited Verseneds Algorithm Phoenix Scorer (ML Predictions) Grox-based Transformer predicts: P(1ike), P(reply), P(repost), P(click) Welghted Scorer (Conbine predictions) Attenuste repeated auth to enture ford diversity powered by by final score, select top K cand ...