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AlphaGo 的開局庫分析

Facebook 上看到 Aja Huang 的訊息,介紹了 DeepMind 放出的新資料,由 AlphaGo 分析人類開局的各種勝率 (不是先前發表出來更凶的 AlphaZero,但不曉得是 AlphaGo Zero 還是 AlphaGo Master...)。

網站在 AlphaGo Teach: Discover new and creative ways of playing Go,盤面上的數字都是指黑棋勝率。

This tool provides analysis of 6,000 of the most popular opening sequences from the recent history of Go, using data from 231,000 human games and 75 games AlphaGo played against human players.

Explore the board and learn how AlphaGo's moves compare to those of professional and amateur players.

由於這是暴力法算出超大量的開局資料,而且是完整公佈在網路上,可以預料接下來的職業比賽,開局應該會參考這邊的資料進行修正...

新書廣告「為你自己學Git」

Disclosure:我跑去找作者簽名,然後被戳說要介紹廣告一下 XDDD

這是本講 Git 的書,翻內容後的感覺... 定位差不多在入門使用者與中階使用者。先引用作者在 Twitter 的 tweet:

天瓏掛第一,然後出版社通知要二刷了,應該是賣的還不錯 XDDD

書的章節可以參考「天瓏網路書店-為你自己學Git」這邊,內容是以 Command Line 為主,對於真的要把 Git 用好蠻有幫助的。除此之外,實務上常見的問題都有提到 (像是搞爛東西後可能的解法),也講了不少冷知識,對於理解 Git 內怎麼運作會有幫助...

唯一覺得奇怪的地方應該是在最後兩章,講 GitHub 與 Git Flow (也就是「A successful Git branching model」這邊提出來的方法),反而不是 GitHub Flow... 雖然在 GitHub 上也可以走 Git Flow 啦。

Steam 停止使用 Bitcoin 購買遊戲

Steam 宣佈停止使用 Bitcoin 購買遊戲:「Steam is no longer supporting Bitcoin」。

官方提到的原因是因為交易費用太高 (雖然是讓使用者付):

In the past few months we've seen an increase in the volatility in the value of Bitcoin and a significant increase in the fees to process transactions on the Bitcoin network. For example, transaction fees that are charged to the customer by the Bitcoin network have skyrocketed this year, topping out at close to $20 a transaction last week (compared to roughly $0.20 when we initially enabled Bitcoin).

另外一個原因是波動問題:

Historically, the value of Bitcoin has been volatile, but the degree of volatility has become extreme in the last few months, losing as much as 25% in value over a period of days.

所以這樣推測,Steam 不是直接換成法幣?我記得他們合作的交易所 (BitPay) 可以馬上換成法幣...

去電視廣告的服務又來了...

看到「Plex’s DVR now lets you skip the commercials… by removing them for you」這篇文章,介紹 Plex 要推出去電視廣告的服務...

維基百科上的介紹比較清楚:「Plex (software)」,主要有兩個元件組成,media server 與 player:

  • The Plex Media Server desktop application runs on Windows, macOS and Linux-compatibles including some types of NAS devices. The 'server' desktop application organizes video, audio and photos from your collections and from online services, enabling the players to access and stream the contents.
  • The media players. There are official clients available for mobile devices, smart TVs, and streaming boxes, a web app and Plex Home Theater (no longer maintained), as well as many third-party alternatives.

然後這次要推出的功能是直接在錄影的時候把廣告拿掉:

Plex confirmed it’s rolling out a new feature that will allow cord cutters to skip the commercials in the TV programs recorded using its software, making the company’s lower-cost solution to streaming live TV more compelling. Unlike other commercial-skip options, Plex’s option will remove commercials from recordings automatically.

這讓我有些印像... 當年 TiVo 也有類似的功能,不過文章裡有提到 TiVo 是提供 skip 而非直接拿掉:

The new feature works by locating the commercials in your recorded media. It then actually removes them before the media is stored in your library. That sounds like it could be even better than TiVo’s commercial skipping option, for example, because you don’t have to press a button to skip the ads — they’re being pulled out for you, proactively.

不過主要是認識了 Plex 這個軟體... 如果是電視兒童的話應該用的到 XD 台灣目前的電視節目好像看的比較少...

man 的復活節彩蛋

有人在 Unix & Linux Stack Exchange 上抱怨他的自動化測試在清晨會爛掉,但其他時間都好的:「Why does man print “gimme gimme gimme” at 00:30?」。

We've noticed that some of our automatic tests fail when they run at 00:30 but work fine the rest of the day. They fail with the message "gimme gimme gimme" in stderr, which wasn't expected. Why are we getting this output?

然後兇手跟作者都自己跑來出來說明 & 修正了 XDD

該 tweet 出自:

最近 man 怎麼這麼紅啊 XDDD (像是「10 Year Old Root Exploit Found in 'man' Command」),你們這些人不要亂搞啊 XDDD 這樣很吃大家通靈的時間啊 XDDD

AWS 推出新的 Cost Explorer API,不過 API 不是重點啦...

AWS 的「New – Interactive AWS Cost Explorer API」這篇文章在一開頭就提到了 Cost Explorer API 的情況,所以他們要推出新的 API 改進:

We launched the AWS Cost Explorer a couple of years ago in order to allow you to track, allocate, and manage your AWS costs. The response to that launch, and to additions that we have made since then, has been very positive. However our customers are, as Jeff Bezos has said, “beautifully, wonderfully, dissatisfied.”

不過讓我笑出來的是選圖啊... 大概是 Jeff Barr 夠硬的關係,直接選了這張:

我喜歡這張 XD (尤其配合著出現在官方 blog 上的時候)

在北美盜版 IPTV 產生的流量比 BitTorrent 還多

算是前陣子的新聞,在北美地區的盜版 IPTV 流量比 BitTorrent 的流量還多:「IPTV Piracy Generates More Internet Traffic Than Torrents」。

During peak hours, 6.5% of all downstream traffic on fixed networks is generated by TV piracy services.

To put this into perspective; this is more than all BitTorrent traffic during the peak hours, which was “only” 1.73% last year, and dropping.

如果把影音網站都考慮進去,最大的還是 YouTubeNetflix 這兩個啦,不過盜版的量也不小...

然後也有把最大的量分析出來,這裡面最大的量是 Indian Star Plus HD,應該是印度裔或是印度籍的人看家鄉的東西?

The most viewed of all in North America, with 4.6% of all pirated TV traffic, is the Indian Star Plus HD.

不過 Sandvine 一直都有方法分析整個北美流量,讓人感覺不太舒服...

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