2024年11月23日 星期六

John Simpson (journalist) Unspub World BBC

John Simpson (journalist) Unspub World BBC



Latest posts from John Simpson
A few thoughts from me for tonight’s Unspun World (BBc Two, 11.05) about Britain’s changing relationship with China, generated by mutual anxieties about Pres Trump’s likely trade tariffs. Also viewable on iPlayer & BBC World, and audible on BBC World Service.
3 days ago

I read in The Times that X/Twitter is shedding users at a rate of 14% a month — on account of too many trolls, I assume. Meanwhile BlueSky, the Times says, has been growing by 1 million a day.
4 days ago



John Simpson (journalist)
Wikipedia
https://en.wikipedia.org › wiki › John_Simpson_(journ...






John Cody Fidler-Simpson CBE (born 9 August 1944) is an English foreign correspondent who is currently the world affairs editor of BBC News.

About

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John Cody Fidler-Simpson CBE is an English foreign correspondent who is currently the world affairs editor of BBC News. He has spent all his working life with the BBC, and has reported from more than 120 countries, including thirty war zones, and interviewed many world leaders. Wikipedia
Born: August 9, 1944 (age 80 years), Cleveleys, United Kingdom

“finding the needle in the haystack becomes practically impossible without the help of automation,”

 

 But the pampa is so immense that “finding the needle in the haystack becomes practically impossible without the help of automation,” said Marcus Freitag, an IBM physicist who collaborated on the project.



“It took nearly a century to discover a total of 430 figurative geoglyphs,” said Masato Sakai, an archaeologist at Yamagata University in Japan who has studied the lines for 30 years.

Dr. Sakai is the lead author of a survey published in September in the Proceedings of the National Academy of Sciences that found 303 previously uncharted geoglyphs in only six months, almost doubling the number that had been mapped as of 2020. The researchers used artificial intelligence in tandem with low-flying drones that covered some 243 square miles. Their conclusions also provided insights into the symbols’ enigmatic purpose.


2024年11月21日 星期四

英国須重启建设下一代计算能力的努力。Jensen Huang argues that these are early days for AI technology, and companies are continuing to spend big on Nvidia's chips. But not everyone shares his optimism 澳洲阿德萊德大學AI第7名

Jensen Huang argues that these are early days for AI technology, and companies are continuing to spend big on Nvidia's chips. But not everyone shares his optimism https://econ.st/3ATjdij
Photograph: Reuters
可能是 1 人和顯示的文字是「 Scaling the wall Nvidia's boss dismisses fears that AI has hit a dead thatAlhashitadead end 」的圖像


澳洲的大學真值得“注意”。這所大學非常久之前,可以請統計學大師 R. A. Fisher 去任教。
提供優渥獎助學金。
在國際職場大放異彩。進入澳洲阿德萊德這所全球百大學府,掌握更多機會與更多可能。


超级计算机超算教授:英国将落后于超级计算机竞争对手 会员专享爱丁堡大学负责百亿亿次计算项目的教授帕森斯表示,如果英国不重启建设下一代计算能力的努力,将是一场“灾难”。

2024年11月17日 星期日

不可靠的LLM。我明知 ChatGPT 沒有設計這部分,我不知光靠LLM是怎麼辦到的。真的很神奇。ChungChih Li


ChungChih Li

ChatGPT 還是很不可靠,我又出了20題是非題(計算理論),題目沒有比較難,這次錯了11題,等於亂猜,解釋也亂七八糟,連猜對的都亂扯。(昨天答對 46/50 我很驚奇,但沒看它的解釋,可能也是鬼扯。)鞥鞥鞥

。。。。
ChatGPT 還是很厲害的,我出了50題是非題,不是記憶性的,理論的,也不是很簡單,學生程度好的可以答對45題,平均是30題,比用猜的好一些。一時興起丟給ChatGPT ,答對46題,很神奇。那是給大學部最後一年的考題,另一份給研究生的 ChatGPT 表現稍差,但50題也答對了41題,很厲害,學生很少高於30的,25以下很多,比用猜的還爛,因為有陷阱。幾乎每題都要邏輯推理,而我明知 ChatGPT 沒有設計這部分,我不知光靠LLM是怎麼辦到的。真的很神奇。


+++++Huang Gino 是非題對人腦比較難,容易被情緒影響,但選擇題AI確實比較不行,我覺得是因為焦點被分散,比較不好收斂,但還是頗厲害,水準以上。計算題(或者說應用題),除非很標準的問題,AI常大崩潰。

 前天(9/25)《自然》期刊登出一篇慘烈的AI研究:


隨著大型語言模型(LLM)的訓練參數越來越龐大,#AI卻越來越不可靠。


研究團隊發現,早年的AI模型,遇到不懂的問題比較會迴避,但升級過後的版本,更容易胡謅出一個有模有樣(但錯誤)的答案。


他們分析了三個大型語言模型:OpenAI的 #GPT、Meta(臉書)的 #LLaMA、還有 #BLOOM(BigScience專案開發的全球最大開源語言模型)。發現雖然越大的語言模型回答的精確度確實有上升,但在另外那些不精確的答案中,錯誤的比例卻更上升。


而且這種傾向隨著提出的問題越難、也會越嚴重,尤其像GPT-4,幾乎所有問題都硬要回答、裝得有模有樣。(如圖)


最慘的是,研究團隊讓人類來給予AI模型評價,區辨這些AI的答案是對是錯,結果真人把AI的錯誤答案當成正確答案的比例,大約介於10% - 40%之間。也就是說人類辨識AI答案真假的能力還蠻差的。


⋯⋯看完這篇研究,是否覺得AI跟人類超像:


1. 自以為博學多聞,遇到不懂的問題,卻越來越難以承認「我不知道」 🤷


2. 即使嚴重誇誇其談、裝作無所不知,都還是會有很多人相信他 🤷


(好吧,至少證明AI還是人類文化養出來的小孩無誤)


▌ Zhou, L., Schellaert, W., Martínez-Plumed, F. et al. Larger and more instructable language models become less reliable. Nature (2024).h