一個城市嘅發展,唔係剩睇 GDP, 唔係睇你搵幾錢。香港作為要支撐住七百幾萬人嘅城市,本身嘅基建係好重要嘅一環。呢度嘅基建唔係講咩港珠澳大橋、高鐵呢啲對外嘅基建,係道路、交通、渠務、水電、通訊等等內部嘅基建。香港响呢方面係做得太出色,而要做得咁出色,係因為呢個唔單單係需要,而係一個必要。香港停頓一日,就已經無咗數以十億計嘅經濟損失 (而我唔知呢條數點計),所以呢一刻話落八號波,如果以30分鐘嘅車程再加30分鐘嘅準備,响一個鐘頭內,整個城市基本上運作正常,全球只此一家。
反觀澳門,2016年人均 GDP 比香港要高 50%, 啲錢洗咗去邊呢? 我唔止一次聽過澳門好似香港咁成日整路,但又唔係鋪電線整水管嗰啲,而係無端端掘爛條路再鋪返佢。最後,噚日一個風,水浸不再話下,斷水斷電,再加上人命傷亡,損失難以估計。然後,行政長官走去無事嘅地方視察,官員話按本子跟程序做事,然後,就沒有然後了。唔係人民選出嚟嘅人,唔使向人民負責,呢個係常識。台灣之前都停過電,高官識做就乖乖辭職,但關個高官事咩? 基本上唔關,但電網脆弱,欠規劃,最終就要算到高官頭上,呢個係對人民負責嘅自覺。
順帶一提,香港,同樣有個唔係人民選出嚟嘅政府,一個變咗橡皮圖章嘅立法會,同埋一個已經做緊政治審判嘅司法機構。已經過咗 Point of no return, 未來係點,澳門係前車可檻,做定心理準備吧!
孫中山講過:「政就是眾人之事,治就是管理,管理眾人之事,便是政治」實實在在咁解說民生同政治嘅關係。你討厭政治,那便放棄民生。唔好阻人搵食,咁就打死無怨。窮得只剩下錢,之後失去生命,呢啲叫有錢無命享。
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Thursday, August 24, 2017
Thursday, August 3, 2017
人工智能原理 淺陋篇
作為一個電腦從業員,去理解 AI 點運作,係責任。人會因為無知產生恐懼,作為專業人員唔可以。
依家嘅 AI, 基本上係 Neural Network, 簡單嚟講係 Weighted Average. 個 average 就係分類結果嘅信心/準誠度。而分類嘅結果準唔準,就要睇吓啲 Weight 啱唔啱。至於啲 Weight 點搵出嚟,就要有一 set data 去話俾個 Neural Network 知乜嘢係啱,個過程叫做 Training.
最簡單嘅 Neural Network, 例如 OCR 去認英文字同數字,一個 10 x 10 嘅單色圖,1 個 input layer 有 100 個 node, 1 個 output layer 有 62 個 node. 入面有好多數要計 ,當中會用到數學上嘅 Matrix, 所以最理想係用 GPU 計。
多過兩層嘅 Neural Network 就叫做 Deep Network/Learning, 功較就係加入複雜性,例如有一層識得認直線、橫線、斜線,下一層就識得認十字線同交叉線,而圖案嚟講,就係由複雜嘅線條組成,從而去認唔同嘅物件。
無論係唔係 Deep Network, training data 嘅質素係好重要,學電腦第一堂學嘅就係 Garbage In, Garbage Out, 亂教一通嘅話,就係一個亂嚟嘅 AI, 同你亂教一個鬼佬講廣東話粗口當係問候語效果差唔多。
所以 AI 會唔會發展到消滅人,就要睇吓 Neural Network 嘅結構同埋擺乜嘢 data 去 train.
至於 AI 會唔會有自我意識,咁就要睇吓點樣將自我意識呢樣嘢變做 1 同 0 先。
P.S: 點解 QQ 個 Bot 點解會反共,一係假 AI, 一係俾人 feed 咗啲反共 data 去 train, 無其他。
依家嘅 AI, 基本上係 Neural Network, 簡單嚟講係 Weighted Average. 個 average 就係分類結果嘅信心/準誠度。而分類嘅結果準唔準,就要睇吓啲 Weight 啱唔啱。至於啲 Weight 點搵出嚟,就要有一 set data 去話俾個 Neural Network 知乜嘢係啱,個過程叫做 Training.
最簡單嘅 Neural Network, 例如 OCR 去認英文字同數字,一個 10 x 10 嘅單色圖,1 個 input layer 有 100 個 node, 1 個 output layer 有 62 個 node. 入面有好多數要計 ,當中會用到數學上嘅 Matrix, 所以最理想係用 GPU 計。
多過兩層嘅 Neural Network 就叫做 Deep Network/Learning, 功較就係加入複雜性,例如有一層識得認直線、橫線、斜線,下一層就識得認十字線同交叉線,而圖案嚟講,就係由複雜嘅線條組成,從而去認唔同嘅物件。
無論係唔係 Deep Network, training data 嘅質素係好重要,學電腦第一堂學嘅就係 Garbage In, Garbage Out, 亂教一通嘅話,就係一個亂嚟嘅 AI, 同你亂教一個鬼佬講廣東話粗口當係問候語效果差唔多。
所以 AI 會唔會發展到消滅人,就要睇吓 Neural Network 嘅結構同埋擺乜嘢 data 去 train.
至於 AI 會唔會有自我意識,咁就要睇吓點樣將自我意識呢樣嘢變做 1 同 0 先。
P.S: 點解 QQ 個 Bot 點解會反共,一係假 AI, 一係俾人 feed 咗啲反共 data 去 train, 無其他。
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