免费的虚拟教师

虚拟数字人是通过各种技术创造出来的，具有多种人类特征，比如外观、行为和思想，被呈现为虚拟形象。从驱动层面来说，虚拟数字人可以分为两类：中之人驱动和AI驱动。其中，中之人驱动运用动作捕捉和面部捕捉技术实现虚拟人与现实的交互；而AI驱动则使用AI技术创建、驱动和生成虚拟人的内容，从而赋予其感知和表达等交互能力。中之人驱动的数字人有其上限，缺乏高并发和量产化的能力，可以看做是真人“披着虚拟外皮”的产物。ChatGPT的出现催动了新一轮AI技术的浪潮，不少虚拟数字人厂商都在争相宣称自己的产品将会接入ChatGPT，赋予数字人智慧的大脑。只有通过AI技术让虚拟人“虚拟”得彻底，才能够释放出更高的价值。从应用层面来看，虚拟数字人可分为服务型、表演型和身份型三大类。服务型虚拟数字人，如虚拟主播、虚拟助手、虚拟教师、虚拟客服和虚拟医生等，主要为物理世界提供各种服务。典型代表有冯小殊、崔筱盼、观君等。表演型虚拟数字人，如虚拟偶像等，主要用于娱乐、影视等场景，例如虚拟偶像演唱会。典型代表有洛天依、AYAYI、柳夜熙等。身份型虚拟数字人是物理世界的“真人”进入虚拟世界的数字分身，在元宇宙中，数字分身有广泛的应用场景。本文讨论的虚拟数字人是AI驱动的，主要集中于服务型虚拟数字人。强调服务型虚拟数字人具有功能属性，隶属于业务层。文章仅探讨AI创造出的虚拟“皮囊”可以带来什么价值。

In the next couple of decades,we will be able to do things that would have seemed like magic to our grandparents.This phenomenon is not new,but it will be newly accelerated.People have become dramatically more capable over time;we can already accomplish things now that our predecessors would have believed to be impossible.We are more capable not because of genetic change,but because we benefit from the infrastructure of society being way smarter and more capable than any one of us;in an important sense,society itself is a form of advanced intelligence.Our grandparents–and the generations that came before them–built and achieved great things.They contributed to the scaffolding of human progress that we all benefit from.AI will give people tools to solve hard problems and help us add new struts to that scaffolding that we couldn’t have figured out on our own.The story of progress will continue,and our children will be able to do things we can’t.It won’t happen all at once,but we’ll soon be able to work with AI that helps us accomplish much more than we ever could without AI;eventually we can each have a personal AI team,full of virtual experts in different areas,working together to create almost anything we can imagine.Our children will have virtual tutors who can provide personalized instruction in any subject,in any language,and at whatever pace they need.We can imagine similar ideas for better healthcare,the ability to create any kind of software someone can imagine,and much more.With these new abilities,we can have shared prosperity to a degree that seems unimaginable today;in the future,everyone’s lives can be better than anyone’s life is now.Prosperity alone doesn’t necessarily make people happy–there are plenty of miserable rich people–but it would meaningfully improve the lives of people around the world.

强烈推荐宝藏教育产品：可汗学院（Khan Academy）出品的AI Tutor Khanmigo。它背后接入了4.0的API。作为全球第一批内测用户，我用到现在的感受是，it really helps me learn！Khanmigo所有的模块都采取了苏格拉底式教学法，从不直接告诉你答案，而是引导你不停思考，最终自己找到答案。我选取其中一个module给大家做简单展示：学生告知khanmigo自己想学的知识点：10以内的加法1.Khanmigo提问简单题目3+2，学生回答正确（从简单的开始）。2.提问稍难题目4+6，学生表示不会（难度递进）。3.它从抽象数字降维到具体的物品——苹果，帮助学生用具象思维理解，也体现了数学思维中的CRA（Concrete,Representative,Abstract，从具体到代表再到抽象)。学生继续表示不会（给脚手架辅助）。4.它拆解了加法，让学生先算4+1。学生终于会了答出了5+5=10（再给脚手架辅助）。不仅仅是数学，Khanmigo可以做到全科目随问随答（tutor解释理科的时候，bug比较多）。可汗学院所有科目的视频以及习题旁，都可以随时呼出Khanmigo。它可以为你总结视频内容，按照你当前的知识储备，以苏格拉底的方式一点一点启发你完成任意题目。（本段文字来源于支教战友@觉老师授权发到这里）我最近用它看「宏观经济」，看不懂就调它出来互动：总结，提问，练习评估。这不就是24*7的私人教师么？还几乎不花钱（一个月88 RMB），比起动辄四五位数的补课费，它真的太香了。未来的世界将是一个深度与知识互动的世界。在AI时代，传统的单向视频讲课，即老师一个人进行录播教学的模式，将很难作为一种独立存在的教学形式。