lu yu

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iPhone 7 Plus vs. Galaxy S7 vs. iPhone 6S Plus

00:00<p>--:--<p>Cameras Compared:<p>We had our own professional photographer put Apple’s best iPhone camera ever to the test in a Bay Area shootout versus last year’s iPhone — and the Samsung Galaxy S7.<p>iPhone 7 Plus versus:<p>iPhone 6S Plus<p>Samsung Galaxy S7<p>Technical note: These images are compressed for the …

Samsung Galaxy S7

5 Ways to Protect Your Retirement if the Market Tanks

Use these strategies to keep your investments safe.<p>When you’re investing for retirement, your main task is to establish a long-term goal and plot out …

Samsung Galaxy Note 5 review: the best big phone just got better

For a while there, companies like Palm and Microsoft insisted that the mark of a serious smartphone was the ability to write on it with a stylus. The industry seemingly changed its mind with the advent of capacitive touchscreens, and the stylus became something to scoff at, a holdover from …

Google OnHub review: Routers don't have to be so complicated

If you're like me, a cold feeling of dread grips your heart every time your internet goes out. "Is Comcast down," I ask myself, "or is my horrible router misbehaving yet again?" This usually follows 10 minutes of unplugging and then plugging things back in, waiting and hoping for your internet …

chrome://bookmarks/OI:<p>(于 2013.12.27 修改并整理)<p>看起来楼主的倾向是算法竞赛,以下大部分也都是表现形式为刷题的算法学习网站~<p>面试的话看这个:LeetCode Online Judge 或者 Hacker Rank<p><b>推荐的讲解算法的网站、好博客</b>:<p>http://www.csie.ntnu.edu.tw/~u91029/ 讲解、代码格式、图表都很规范,覆盖广<br>• http://www.matrix67.com/informatics.html Matrix67 的一些算法讲解类经典文章,平易近人<br>• https://www.byvoid.com/blog/tag/計算機科學 BY …

• 前几天IBM这个新闻一出来大家都很感兴趣,可是似乎不少人对这个领域并不太了解,好多回答和评论并没有说在点子上。<br>• 答主目前在一个主要研究Analog mixed-signal IC的group,今年年初老板说他开始对neural network的方向感兴趣,让新进来的同学调研学习这方面最新的研究成果。我当时觉得很奇怪,neural network、deep learning不是CS那边很火的一个方向么,硬件实现相关的话不也应该是做DSP、multi-core等的偏数字的group来研究么。于是好奇的我边听同学的调研报告,一边找了一些相关的资料来了解了一下。<br>• 所以这份回答类似读书笔记+类综诉+八卦,分 …

Why 'outdated' Turing test is no longer the gold standard of AI

A chatbot pretending to be a 13-year-old boy recently passed the famous artificial intelligence test, its creators claim. But does Turing's test really tell us anything about AI?<p>"Things have moved on a long way."<p>"Minds are not disembodied logical reasoning devices."

Artificial Intelligence

<b>注:本答案写于 2014-06-03,评价的是 Swift 很早期的版本,现已不完全适用。</b><p>本想看完文档再写的,不过看到排名靠前的答案有些偏激(你们不就是想找个理由不学嘛),还是先写些看法吧。<p>首先,它不是一门玩具语言。<br>去看看它的文档就明白了,feature 非常丰富(我敢保证你们在半天内是看不完的)。<br>再看它的库,Apple 把 Cocoa 的 API 都用 Swift 写了个封装,而不是完全一致的。<br>下面是文档里的例子:<br>Objective-C:<p>Swift:<p>所有参数都重写了有没有?如果不是想取代 Objective-C,干嘛还去重写,你直接用那冗长的参数不就完了?<br>不过现阶段底层仍然调用的是 Obje …

Deep Learning大概是现在的机器学习算法里最接近人脑思维的一种,因为人脑的神经网络就是非常深层的。为什么需要Deep?因为据说人脑对问题的认识和分类就是非常深的层级结构。<br>举两个例子:<br>看一幅图时对特征的提取大概是:像素-->边缘-->基本形状-->纹理-->各种复杂-->各种复杂。<br>对于一句话:音节-->单词-->分句-->句子-->各种复杂-->各种复杂。<p>显然,传统神经网络算法两三层那样是不行的,而传统神经网络往往两三层就能解决大多数问题(理论上三层网络可以逼近任意函数),当网络层数多了的情况下反而训练误差又难以接受。不够Deep,另外一些比如有阵子很流行的SVM,不仅不够Deep,还 …

Why Apple’s New Font Won’t Work On Your Desktop

Star typeface designer Tobias Frere-Jones explains the challenges of using Helvetica Neue as an operating system font.<p>For the first time ever, Apple is ditching Lucida Grande as the OS X system font in favor of Helvetica Neue, which also happens to be the iOS system font. For an operating system …

What you need to know about Aereo's battle with broadcast television

Today, the United States Supreme Court will spend one hour hearing the latest arguments in an old, important debate that affects everyone watching television in the US: Who owns the airwaves?<p>ABC, CBS, NBC, Fox and others <i>use</i> the broadcast frequencies our TV antennas pick up; the government <i>regulates</i> …

老程序员的下场 –

Samsung Galaxy S III review

How do you review a phone like the Galaxy S III? It’s already been subject to so much speculation, exposure, and early judgment — some of it coming from myself, admittedly — that it feels overwhelming to try and condense what it means to everyone into a single treatise. To Samsung, it’s the new …

如何判断自己是否具有成为一名优秀程序员的潜质

AT&T reduces 2GB Mobile Share Value plans by $15 per month

Following up on the news that its UnCarrier rival will soon raise the cost of its unlimited data plan, AT&T is making some pricing changes of its own -- in the completely opposite direction. The base rate for the company's 2GB Mobile Share Value plan is currently $55 (that's the base price, …

How to Cut the Cord and Ditch Cable Once and For All

The imminent merger between Time Warner Cable and Comcast heralds the start of a new era: one of even more expensive channel bundles, and even longer …

Lenovo ThinkPad X1 Carbon

MSRP: $1,299.00<p><b>The Good</b> The better-than-HD touch display on the <b>Lenovo ThinkPad X1 Carbon</b> looks great, the new row of adaptive function keys is clever, and the keyboard and touch pad remain best-in-class examples.<p><b>The Bad</b> Even dropping the higher-resolution touch display doesn't bring the price down, …

Consumer Tech

Sony NEX-6 review: can a pocket-sized camera finally kill your DSLR?

I still use a DSLR. Unlike my colleague Dan Seifert (and a handful of other staffers at The Verge), I've never been willing to sacrifice the speed and control of my Nikon D7000 to get a smaller, lighter camera. It's really not an image quality issue — Sony's NEX lineup typically takes excellent …

AT&T Launching New Mobile Share Value Plan February 2nd, Offers Reduced Rates And More Data To Lure You Away From Subsidies

AT&T will be offering a new type of family plan starting tomorrow (February 2nd) that could save you a bit of cash. The Mobile Share Value Plan …

Up close: Kindle Fire HDX 8.9 vs. iPad Air & Retina iPad mini

Before we jump in, know that this comparison is more about how the Fire HDX 8.9 sizes up next to Apple's two iPads than how the two iPads stack up …

IPad Air

Lenovo ThinkPad Yoga

MSRP: $949.00<p><b>The Good</b> The <b>ThinkPad Yoga</b> has an innovative vanishing keyboard that solves a major hybrid problem. Construction, battery life, and ergonomics are up to Lenovo's typical high standards.<p><b>The Bad</b> The screen is smaller and lacks the higher resolution of the similar Yoga 2 Pro. The hidden …

Computer Hardware

Samsung Galaxy Note 3 review

Samsung essentially created the market for the in-between smartphone — a device that could ostensibly take the place of both a smartphone and a tablet — with its wildly popular Galaxy Note lineup. (The Korean phone-maker recently boasted that it has sold over 38 million Galaxy Note and Galaxy Note …

Nexus 5 review

In this review of the Nexus 5, I will attempt to answer one simple question: is Google capable of making a flagship, best-in-class smartphone it can sell for $349 off-contract? And I don't just mean a nice, okay, swell, good, decent, better-than-the-last-one phone. I mean a phone that stacks up …

13-inch MacBook Pro with Retina display review (2013)

Standing in a Best Buy is an odd time for an existential crisis. Yet it's an almost certain occurrence, at least when you're there shopping for a laptop. More so than with any other product category, buying a laptop forces you to make all manner of decisions and prognostications about yourself. Do …