图数据的产生和发展
图是信息科学中最常用的一类抽象数据结构，能够直观的表达现实世界中对象之间的真实关系。许多重要应用都需要用图结构表示，传统应用如最优运输路线的确定、疾病爆发路径的预测、科技文献的引用关系等；新兴应用如社交网络分析、语义 Web 分析、生物信息网络分析等，与图相关的处理和应用几乎无所不在 [1] 。
自己拿到相机也有两个多月了，这两个多月乱拍也好，认真构图也好，总归是积累了一点点拍照的经验，说是拍照，是因为万万不敢说自己是摄影啊，还有太多的东西自己一知半解，所以，纯粹是摸索着拍、当然，这完全契合我原本的诉求，即拿相机是用来记录的，重在发生的事情而非相片本身，而且我也不对自己做什么专业的要求。每当看到这张照片，能够回忆起当时的记忆，这就足矣！下面就简单介绍下我已有的器材。
This article is a set of memories, belonging to the list of RMBATS.
About this test happened on October 20th, I‘ve to say that the nervousness indeed made a negative impact for me, especially when I attended the speaking test. I almost couldn’t fluently speak a complete sentence when I first sat in front of the examiner, which, of course, was the first time for me to talk with the real foreigner. So that it was no surprising that the score of my first speaking test was just 4.5, which was a quiet low score for examinees. Besides, the score of other parts of the test were not good as well, e.g. the listening score was just 5.5, which normally, I need to get 6.5 to reach my target. If I have to find a key reason for this failure, I would say that my preparation was obviously not enough. Also, the failure taught me a lesson that, no pain no gain. [ ↓ ]
This article is a set of memories, belonging to the list of RMBATS.
It’s time to make a summary for the past whole year. To be honest, I had to say I exprienced a really momerabe year, during which happened a lot of things, all of them are mainly about my further education. Here, I will use some words to write these memories down, for myself and also for all of you. Because of the length of this article, I divided it into three parts, named part A and B. The first part (A) is as follows.
电影海报Ⅰ
Spark是一个分布式计算系统/组件/平台，这是都知道的，其用Scala实现Spark任务也是最原生的，但万万不能认为只要是在Spark环境下执行的Scala代码都是分布式执行的，这是大错特错的，一开始一直有错误的认识，但现在想想，如果拿Java和Hadoop的关系来作对比，其就很容易理解了。
这个错误出现过若干次了，每次出现都想记录一下可是都忘了，然后下一次再遇见就又要搞很久才能解决，其实这本身是IntelliJ IDEA 2017.2的一个bug，只要修改一处配置就好了。
注：先前的文章里记得有个地方对这个问题表述的不正确，有时间再改。
