用AI聊天机器人替代网页搜索，让塞拉利昂教师以更低成本获取教学信息。
Could AI Leapfrog the Web? Evidence from Teachers in Sierra Leone
- 通过WhatsApp部署AI聊天机器人，代替传统网页搜索。
- AI查询成本比加载网页低98%，且响应更相关准确。
- 适合网络差、带宽贵地区的教育工作者使用。
撒哈拉以南非洲仅37%的人使用互联网，且即使上网也少用传统网页搜索。主要原因是带宽稀缺且昂贵。我们研究了基于AI的WhatsApp聊天机器人能否弥合这一差距，分析了529名塞拉利昂教师在17个月内提交的40,350条查询。每月有更多教师选择AI而非网页搜索获取教学帮助。对比google.com.sl返回的前几项结果，其中仅有2%的网页来自本国，且平均每个网页消耗的带宽是AI响应的3,107倍。即便计入AI计算成本，通过WhatsApp查询AI仍比加载网页节省98%费用。盲测中，独立教师样本认为AI回答比网页结果更相关、更有帮助、更正确。这些发现表明，AI可为低连接环境提供低成本的信息获取方式。
原文摘要 · Abstract (English)
Only 37% of sub-Saharan Africans use the internet, and those who do seldom rely on traditional web search. A major reason is that bandwidth is scarce and costly. We study whether an AI-powered WhatsApp chatbot can bridge this gap by analyzing 40,350 queries submitted by 529 Sierra Leonean teachers over 17 months. Each month, more teachers relied on AI than web search for teaching assistance. We compare the AI responses to the top results from google.com.sl, which mostly returns web pages formatted for foreign users: just 2% of pages originate in-country. Also, each web page consumes 3,107 times more bandwidth than an AI response on average. As a result, querying AI through WhatsApp is 98% less expensive than loading a web page, even including AI compute costs. In blinded evaluations, an independent sample of teachers rate AI responses as more relevant, helpful, and correct answers to queries than web search results. These findings suggest that AI can provide cost-effective access to information in low-connectivity environments.
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