Category Archives: Science

IBM 的 50 qubit quantum computer

IBM 在展示他們做到了什麼:「IBM makes 20 qubit quantum computing machine available as a cloud service」。 不過重點應該在目前已經拉出 50 qubit prototype 了: The company also announced that IBM researchers had successfully built a 50 qubit prototype, which is the next milestone for quantum computing, … Continue reading

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AlphaGo Zero 的計算量

在 AlphaGo Zero 論文裡有提到,用同樣的硬體 (4 TPU) 可以用 89:11 碾壓 AlphaGo Master (今年年初與柯潔下的那個版本),主要是得力於更高品質的 neural network 以及更強的選擇能力 (後面這塊應該是將兩個 nerual network 簡化為一後的好處): This neural network improves the strength of the tree search, resulting in higher quality move selection and stronger self-play in the … Continue reading

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2011 年的研究,開放辦公室與病假的關聯性

忘記從哪邊冒出來的連結,反正是個 2011 年的研究:「Sickness absence associated with shared and open-plan offices--a national cross sectional questionnaire survey.」。2011 年在丹麥的研究: METHODS: The analysis was based on a national survey of Danish inhabitants between 18-59 years of age (response rate 62%), and the study population … Continue reading

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PyPy 5.9 支援 Pandas 與 NumPy 了

PyPy 5.9 支援 machine learning 常用的 Pandas 與 NumPy 了:「PyPy v5.9 Released, Now Supports Pandas, NumPy」,包括 2.7 與 3.5 的相容版本: The PyPy team is proud to release both PyPy3.5 v5.9 (a beta-quality interpreter for Python 3.5 syntax) and PyPy2.7 v5.9 … Continue reading

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現有語音控制的安全性問題:使用聽不見的高頻下令

雖然相關的理論很早就有了,但上個禮拜放出來的論文完整實做出來,叫做 DolphinAttack,取自於海豚可以聽見人類所聽不到的聲音:「DolphinAtack: Inaudible Voice Commands」(這邊的錯字是作者造成的,submit 到 arXiv 的標題有錯,但論文內描述則是對的)。 無論是 Siri 或是 Google Now,或是其他的控制軟體,都設計成能接受多種不同語調的人,而這個部份目前放的都太寬,造成人類聽不到的區段也可以下令: 也可以看到成功機率很高: 應該會有些調整...

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各種職業與離婚率

也是篇研究,講各種職業的離婚率:「Divorce and Occupation」,副標題「Some jobs tend towards higher divorce rates. Some towards lower.」。拿的是 2015 美國的資料分析出來的: Using data from the 2015 American Community Survey, for each occupation, I calculated the percentage of people who divorced out of those who married at least … Continue reading

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Flat UI 反而造成使用者困擾

在「Flat UI Elements Attract Less Attention and Cause Uncertainty」這邊透過追蹤眼球的技術,發表了研究結果: Summary: Flat interfaces often use weak signifiers. In an eyetracking experiment comparing different kinds of clickability clues, UIs with weak signifiers required more user effort than strong ones. 其中最明顯的一個例子就是大家被訓練「有底線的文字應該可以按」,這也是最能馬上被想到的問題... 不過這算是 Flat … Continue reading

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打數學式子的工具

看到 Mathcha 這個網站,除了可以輸入 TeX 的公式外,也有 WYSIWYG 的方式輸入,而最後可以輸出成各種格式 (包括 TeX),或是直接丟連結給其他人: 輸入的部份,對於不知道的符號葉可以用畫的 XD 然後網站上的標示寫沒有支援 IE 與 Edge,不知道是真得不支援還是沒列上去而已... XD

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Hilbert curve

看到 Hilbert curve 的應用 XD:「Using Hilbert Curves to 100% Zelda」。 是碎形的應用... 作者想要將薩爾達的涵蓋率從 98.59% 拉到 100%: 而 Hilbert curve 剛好可以拿來解這個問題: 取自「File:Hilbert curve.gif」。 記錄起來 XD

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字母在單字裡的位置分佈

是一篇老文章了... (2014 年的文章,最近從其他地方提起) 這邊講的是英文,不過同樣方式也可以拿來分析其他語言:「The distribution of letters in English words」,原始文章在「Graphing the distribution of English letters towards the beginning, middle or end of words」。 原文有描述他的資料分析來源: The data is from the entire Brown corpus in the Natural Language Toolkit. It's a smaller … Continue reading

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