一 | 8 月 24 日消息，据外媒 Phys.org 今天（24 日）报道，卡迪夫大学和墨尔本大学的一项新研究发现，生成式人工智能（GenAI）目前还无法像人类教师一样可靠地评判学生的书面作业。
二 | 研究人员使用 ChatGPT 的两个版本，对 50 篇生物科学专业本科生论文进行评分，以测试大模型评估学生作业的能力。 US Democratic House Rep. Ilhan Omar ended up being booed at a concert in Minnesota, the very state whose 5th congressional district she currently represents.,The concert, featuring Somali singer Suldaan Seeraar, was held at the Target Center in Minneapolis on Saturday, July 2, during an annual event called Somali Week that celebrates the independence of Somalia.,As Omar went up on stage to present an award to the singer, the audience started booing her.,A video of the incident, where some members of the audience can be heard shouting “Get the f*ck out of here!” has since been uploaded on social media.,Ilhan Omar got booed onstage at a concert featuring Somali singer Soldaan Seraar in Minnesota last night.People in the crowd chanted "Get out!" & shouted "Get the f*ck out of here!". pic.twitter.com/sggii7h6sO— Leftism (@LeftismForU) July 3, 2022,Omar also tweeted a 14-second clip of her walking up on stage. The said video, however, did not feature the part where she got booed, and quite a few social media users seemed eager to point that out to her.,It was an honor to welcome you to our incredible city. pic.twitter.com/mM77ZLVCYo— Ilhan Omar (@IlhanMN) July 3, 2022,According to Newsweek, while it wasn’t immediately clear exactly why the “mostly Somali” crowd at the event reacted that way to Omar’s appearance, some people suggested that it may have had something to do with her “support for abortion and LGBTQ rights.”,India Slams Ilhan Omar for 'Violating' Sovereignty Over Visit to Pakistan-Administered Kashmir21 April, 12:45 GMT,For example, the media outlet notes that Somali refugee and US Army veteran Shukri Abdirahman, who is currently running for Omar’s congressional district, stated in a tweet related to the incident in question: “This's what she gets for trading her Godly, Conservative values for the sinful LGBTQIA's & the promiscuous abortionists.”,Also, during her appearance at the Gun Violence Community Conversation at North High in Minneapolis last week, Omar suggested that, in terms of violence, Minnesota may be worse than the Somali refugee camp she lived in as a kid.。ChatGPT 需要按照 7 项标准批改这些论文，研究人员还采用了 4 种不同的提示方式，随后将大模型与人工评分的平均分和分数波动情况进行比较。
三 | 图源：Pexels卡迪夫大学生物科学学院威廉 · 凯博士指出：“研究结果显示，模型给出的分数波动很大，无法准确预测人工评分。生成式 AI 与人类批改同一批论文时存在明显差异。只看论文总分，两者给出的结果相对接近；一旦具体到每项评分标准和每一篇论文，大模型与人工评分之间的差距就相当明显。”除一种情况外，AI 模型给出的平均分普遍高于人工评分。平均分方面，AI 模型与人工评分的最大差距达到 16.1 分；具体到单篇论文，最大差距达到 40 分。获悉，威廉 · 凯还发现，AI 往往会压低高分论文的成绩，又把低分作业的成绩抬高，最终使分数系统性地向中间集中。研究结果说明，至少现阶段，即使经过大量训练，AI 仍无法可靠地对主观性较强的书面作业给出与人类相当的分数。
四 | “我们测试的大模型目前并不适合取代教师，为学生预测作业成绩。”研究人员指出，高等教育领域确实很关注大模型能否利用模式识别能力，让学生作业评分更加客观，同时提高批改效率、减轻教职人员压力。但这项研究表明，目前并不适合这么做。此外，未经学生明确同意便把作业提交给 AI 工具，本身还涉及伦理问题；大模型也不能、也不应该被依赖来给学生的长篇书面作业评分。“随着大模型继续发展，未来模仿人类判断的能力可能会提高。但从这项研究来看，要让 AI 给出的分数与人工评分真正保持一致，恐怕并不容易。
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