trec 2019 fair ranking track     最近实验室要求参加trec 2019新出的track:fair ranking track.这里整理一下该任务的思想和要求.这次track主要为学术论文数据的排序. 1 Protocol     会给定一个query集合Q,其中$q\in Q$.对于每个请求,会有一个query q和一个文档集合$D_q$.你需要做的就是根据q来重排序(rerank)$D_q$,重排序结果是$\pi$.最后把每一个请求都处理完返回$\pi$的集合的…

Today i visit the CIIF 2019, as a "professional visitor"  since i have made an appointment online in advance. I visited 5 exhibition halls which are H5 ( about factory automation, FA), H7&8 ( about industrial robots) and H3&4 ( about mac…

传送门 题意:现在有nnn个位置,每个位置上有一个值aia_iai​. 要求支持如下两种操作: 区间乘vvv 求区间的(1−ai)(1-a_i)(1−ai​)之积 思路: 考虑转换式子: Ans=∏i=lr(1−ai)=e∑i=lrln(1−ai)Ans=\prod_{i=l}^r(1-a_i)=e^{\sum_{i=l}^rln(1-a_i)}Ans=∏i=lr​(1−ai​)=e∑i=lr​ln(1−ai​) 于是只需维护∑i=lrln(1−ai)\sum_{i=l}^rln(1-a_i)∑…

Mobile Application DevelopmentCOSC2309/2347 Semester 1, 2019Movie Night PlannerAssignment 1 (20 marks)You are to implement a simple Movie Night Planner app to create andschedule movie viewing events and invite attendees. In this first assignment,you…

延迟调度的主要目的是提高数据本地性(data locality),减少数据在网络中的传输.对于那些输入数据不在本地的MapTask,调度器将会延迟调度他们,而把slot分配给那些具备本地性的MapTask. 延迟调度的大体思想如下: 若该job找到一个node-local的MapTask,则返回该task:若找不到,则延迟调度.即在nodeLocalityDelay时长内,重新找到一个node-local的MapTask并返回: 否则等待时长超过nodeLocalityDelay之后,寻找一个r…

Today, in the Microsoft Connect(); 2018 keynote, Scott Guthrie announced the availability of Visual Studio 2019 Preview 1. This is the first preview of the next major version of Visual Studio. In this Preview, we’ve focused on a few key areas, such a…

Ultimate Facebook Messenger for Business Guide (Updated: Feb 2019) By Iaroslav Kudritskiy November 29, 2018  It's right to be hesitant when adding more channels for contacting your business. Adding Facebook Messenger means another place to manage use…

CSc 352 (Spring 2019): Assignment 11Due Date: 11:59PM Wed, May 1The purpose of this assignment is to work with linked lists, memory allocation, command linearguments, reading from a file, using free(), representing graphs, and doing more complicatedm…

官网:    https://www.aicitychallenge.org/ 基于来自交通,信号系统,基础设施和运输的传感器数据,存在使运输系统更智能的巨大机会.不幸的是,由于几个原因,进展受到限制:\,其中,数据质量差,缺少数据标签,缺乏可以将数据转化为可操作的视角的高质量模型,还需要能够处理从边缘到云的分析的平台,这将加速这些模型的开发和部署 我们正在2019年CVPR组织AI城市挑战研讨会,通过鼓励研究和开发技术来帮助应对这些挑战  .这种方法较少依赖于监督方法,而更多地依赖于转移学习,…

12 Best Live Chat Software for Small Business Compared (2019)     Did you know that more than 67% of users on eCommerce websites abandon their shopping carts without checking out? Customers want their questions to be answered instantly, and any uncer…