5665dfg786769-优快云博客

原创 Traceback of Poisoning Attacks to Retrieval-Augmented Generation

然而，近期研究表明，RAG 系统容易受到投毒攻击的威胁，攻击者可向知识库中注入恶意文本，从而诱导系统生成符合其意图的回答。本文提出了 RAGForensics，这是首个针对 RAG 系统的溯源系统，旨在识别知识库中导致攻击的投毒文本。RAGForensics 采用迭代方式运行，首先从数据库中检索一部分文本，然后利用特制提示引导大型语言模型检测可能存在投毒的文本。本研究首次实现了对 RAG 系统中投毒文本的溯源，为提升该类系统的安全性提供了一种实用且前景广阔的防御机制。

2025-06-11 06:14:16 136

原创 Byzantine-Robust Decentralized Federated Learning

然而，由于其完全去中心化的特性，DFL极易受到毒化攻击的影响，恶意客户端可以通过向相邻客户端发送精心制作的本地模型来操纵系统。迄今为止，只提出了少量具有拜占庭鲁棒性的DFL方法，其中大多数要么通信效率低下，要么仍然容易受到高级毒化攻击的影响。本文提出了一种名为BALANCE（通过本地相似性在去中心化中实现的拜占庭鲁棒平均）的新算法，用于防御DFL中的毒化攻击。在BALANCE中，每个客户端利用自己的本地模型作为相似性参考来确定接收到的模型是恶意还是良性的。

2024-06-24 08:51:28 331

原创 Toward Low-Cost and Stable Blockchain Networks

Envisioned to be the future of secured distributed systems, blockchain networks have received increasing attention from both the industry and academia in recent years. However, blockchain mining proce...

2020-02-28 12:49:12 378

原创 No Hollywood Ending for the Visual-Effects Industry

Our latest Freakonomics Radio episode is called “No Hollywood Ending for the Visual-Effects Industry” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the me

2017-02-24 07:15:02 1745

原创 Bad Medicine, Part 1: The Story of 98.6

Our latest Freakonomics Radio episode is called “Bad Medicine, Part 1: The Story of 98.6.” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media player

2017-02-17 06:30:46 1096

原创 Bad Medicine, Part 2: (Drug) Trials and Tribulations

Our latest Freakonomics Radio episode is called “Bad Medicine, Part 2: Drug Trials and Tribulations” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the med

2017-02-17 06:29:52 1195

原创 Bad Medicine, Part 3: Death by Diagnosis

Our latest Freakonomics Radio episode is called “Bad Medicine, Part 3: Death by Diagnosis” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media player

2017-02-17 06:28:12 846

原创 How to Be More Productive (Rebroadcast)

Our latest Freakonomics Radio episode is called “How to Be More Productive (Rebroadcast)” (You can subscribe to the podcast at Itunes or elsewhere, get the RSS feed or listen via the media player

2017-02-17 06:26:13 2078

原创 How to Become Great at Just About Anything (Rebroadcast)

Our latest Freakonomics Radio episode is called “How to Become Great at Just About Anything (Rebroadcast).” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via

2017-02-17 06:24:37 1374

原创 The Men Who Started a Thinking Revolution

Our latest Freakonomics Radio episode is called “The Men Who Started a Thinking Revolution” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media player

2017-02-17 06:20:01 584

原创 Professor Hendryx vs. Big Coal

Blasting in an open cut coal mine. (Photo: CSIRO/Wikimedia Commons)Our latest Freakonomics Radio episode is called “Professor Hendryx vs. Big Coal” (You can subscribe to the podcast at iTunes or e

2017-02-16 17:42:16 574

原创 Trevor Noah Has a Lot to Say

Our latest Freakonomics Radio episode is called “Trevor Noah Has a Lot to Say” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media player above.)The

2017-02-15 23:27:36 1130

原创 Is the American Dream Really Dead?

Our latest Freakonomics Radio episode is called “Is the American Dream Really Dead?” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media player above.

2017-02-15 23:25:38 1200

原创 Did China Eat America’s Jobs?

Our latest Freakonomics Radio episode is called “Did China Eat America’s Jobs?” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media player above.)Fo

2017-02-15 23:24:15 1808

原创 An Egghead’s Guide to the Super Bowl

Our latest Freakonomics Radio episode is called “An Egghead’s Guide to the Super Bowl.” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media player abo

2017-02-15 23:23:30 1023

原创 How to Get More Grit in Your Life (Rebroadcast)

Our latest Freakonomics Radio episode is called “How to Get More Grit in Your Life (Rebroadcast).” (You can subscribe to the podcast at iTunes or elsewhere, get the RSS feed, or listen via the media

2017-02-14 10:53:59 1834