Figuring out how to walk from A to B is easy in the age of online mapping tools. Just plug in two addresses and off you go. But sometimes getting to a place as quickly as possible isn’t the priority. Take a look at a project in which researchers tried to figure out a city’s “happy” routes.
弄清楚如何从A点快速走到B点很简单。只需在你常用的地图应用中输入两个地址，出发就行了。但有时候，尽快抵达目的地并不是第一要务。至少，总部位于巴塞罗那的雅虎实验室研究员达尼埃莱·奎尔恰（TED演讲：快乐地图）就是这么认为的。他与两位同事罗萨诺·斯基法内拉和卢卡·玛利亚·艾洛一起，尝试编写一套能推荐”快乐”路线的地图算法。
什么？怎么做到的？通过挖掘社交媒体照片的元数据，并邀请数千名志愿者对城市街道图片进行投票，该团队构建了一个可以推荐美丽、宁静、令人愉悦路线的模型。目前，他们已将这一快乐模型应用于柏林、波士顿、伦敦和都灵的高人流量区域。请看：
快速路线：4公里（47分钟）
快乐路线：4.5公里（55分钟）
为什么这条路线让你快乐：快乐路径从柏林洪堡大学出发，你可以在这所全国最大的大学图书馆之一随意浏览。短途路线沿着车流拥挤的卡尔-李卜克内西大街和卡尔-马克思大道一路前行，而快乐路线则带你穿过圣玛利亚教堂旁绿树成荫的美丽广场——这是柏林最古老的教堂之一——再经过柏林标志性商业中心亚历山大广场。最终你将抵达名为”旧消防站”（Alte Feuerwache）的社区中心和艺术空间。
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