Category Archives: Tech Zone

太太任教的中學想搞電競比賽,結果因為家長反對而作罷。這些家長實在太落伍了,今時今日電競絕對是專業運動,職業選手有大公司贊助又有大量粉絲,絕對是人生贏家。
E-Sports is still a taboo among many Hong Kong parents, who hold the outdated view that gaming is just waste of time with little reward.

(相中為鬥陣特攻中國隊,剛在昨天的世界賽八強戰中輸了給法國)
(China just lost to France in the Quarter Finals of Overwatch World Cup. Team pictured below.)


真正靠人工智能賺大錢:顯視卡製造商NVIDIA股價今日首次突破200美元 。去年其股價才70美元,兩年前是30美元!
How A.I. makes you rich: NVIDIA reached $200 for the first time today. It was $70 one year ago and $30(!) two years ago.

網絡安全專家Mathy Vanhoef今日公開了一個影響*全部*Wi-Fi裝置的漏洞,這個漏洞讓駭客可以在沒有Wi-Fi密碼的情況下解密透過Wi-Fi傳遞的信息。雖然沒有證據顯示這個漏洞已被廣泛利用,但在漏洞公開後相信這只是時間問題。目前的最佳自保方法:
一,連上加密網頁(HTTPS)才好登入網站;
二,最好連上Wi-Fi後登入虛擬私人網絡(VPN)。

A protocol-level vulnerability allows an attacker to decrypt protected messages by attacking the four-way handshake of WPA1 and WPA2. Now more than ever: use HTTPS and VPN!

The sequential write speed of #SanDisk #Ultra #128GB #microSD is surprisingly fast, over twice that of the other 128GB card I have in hand, a Toshiba Exceria 128GB, in the Q32T1 benchmark. The figures seem too good to be true, but I have already repeated the tests 3 times for a total of 15 runs and the results still hold.

外母在家收拾時找到這些陳年舊物,現在的同學應該不知道這些是甚麼來的吧?
My students these days probably don’t know what these are.

Did you know that one of the pioneers in neural network was an econometrician? This was not an easy book to find, but it was well worth it. The book is a collection of articles written by Halbert White—as in *White* Standard Errors—that rigorously laid the theoretical foundation for the effectiveness of neural nets, including universal approximation, consistency and asymptotic normality of learned parameters. These results fill a much-needed gap for those with a background in statistics.

deeplearning.ai

講開人工智能,業界泰斗吳恩達教授有關深度學習的免費網上課程在中國已經開始了,比美國早了近兩星期。若你有興趣認識人工智能為何物就萬不能錯過。
While we on the topic of AI, do you know that Andrew Ng’s online course on deep learning is already available in China, two weeks ahead of its official launch in the United States? It’s a very telling sign on how much a leader China is in the development of AI. I highly encourage anyone interested in knowing what AI really is about to take the course. You get to learn from one of the most important figures in the field, how much better than that can you get?

P.S. It’s also interesting that Andrew chose an economic topic as the very first example.

社評﹕AI革命席捲全球 政府須積極回應 – 20170901 – 社評 – 社評 – 明報新聞網

「人工智能」是今年最熱的議題,人云亦云的情況和三兩年前「大數據」不遑多讓。香港的「AI教育」其實不差:很多中小學都有Lego機械人隊。問題是學生無論多喜歡製作機械人,最終選擇以數據科學作為職業的數目相當少。這一來是因為香港的大學學位分配由政府主導,二來過去二十多年來政商界對科技的不重視,已經使香港的高科技產業遠遠落後週邊地區。
以香港科技積弱的程度,我相信新加坡和深圳一點都不擔心來自香港的競爭。當社會情況每況愈下,香港最大的優勢恐怕快要剩下作為走資港的地步了。