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CSC116 Homework # 08 Due by 23 October 2018 ================================================== • You have one week to complete this homework set. • If you need help, CSC 116 TA and I are available to help you. Please stop by my office. You may also see your TA for CSC 116. • Please upload your homework solutions […]

Goals Computer Science 220 S2 (2019) Assignment 4 (Graph Algorithms) Due date: Oct 25th In this assignment we want you to write a program that solves an applied problem dealing with shortest paths in edge-weighted graphs. Ploblem Statement Tamati needs to get back home to see his parents. He needs to travel from Auckland to

CSCI 4101/5101 Test No. 1 Friday, February 19, 2016 MINI-ESSAYS. Answer the questions as completely as you can without sacrificing conciseness. The space provided should be a good indication of the length of answer required. If you do need additional space, you can write on the back of the sheets but clearly indicate where the

CSCI 4101/5101 Test No. 2 Wednesday, April 6, 2016 MINI-ESSAYS. Answer the questions as completely as you can without being too wordy. The space provided should be a good indication of the length of answer required. If you do need additional space, you can write on the back of the sheets but clearly indicate where

Linux Coursework For the Linux coursework, you must write a Linux script that will complete a set task. This is worth 5% of this module and is open book. There should be sufficient time in the labs to complete the task, but if you are finding it difficult, then you may need to work on

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在这次作业中，我们将进行电影数据集的处理： https://raw.githubusercontent.com/sidooms/MovieTweetings/master/latest/ratings.dat (https://raw.githubusercontent.com/sidooms/MovieTweetings/master/latest/ratings.dat) 在数据集中，每一行包含了用户的电影评分（user1 对Titanic的打分为10）. 这是数据集的格式：user_id::movie_id::rating::timestamp （用户id：：电影id：：打分：：时间戳） 在这次作业中，对于每一对电影A和B，你需要找到所有的同是给电影A和B用户。比如，给出下面的数据集（为了便于说明，我们在示例中分别使用U和M表示用户和电影）。 U1::M1::2::11111111 U2::M2::3::11111111 U2::M3::1::11111111 U3::M1::4::11111111 U4::M2::5::11111111 U5::M2::3::11111111 U5::M1::1::11111111 U5::M3::3::11111111 假设用户名和电影名是string格式的，评分是整数格式的。你应该忽略mapper里的timestamp（时间戳） 你的输出格式应该如下所示： (M1,M2) [(U5,1,3)] (M2,M3) [(U5,3,3),(U2,3,1)] (M1,M3) [(U5,1,3)] 其中（M，M）表示成对的电影，[ ]表示用户的list及其评分。比如，（U5，1，3）表示 U5对M1和M2的评分分别为1和3. （请注意你的输出结果格式应该要和上面的输出示例一样） 提示： 在这次作业中，你可能需要实现不止Mapper/Reducer。你需要看看以下的MapReduce链接：https://stackoverflow.com/questions/38111700/chaining-of-mapreduce- jobs#answer-38113499 (https://stackoverflow.com/questions/38111700/chaining-of-mapreduce- jobs#answer-38113499) 你可能也需要self-join去寻找电影对，reduce-side join pattern可以帮助：https://www.edureka.co/blog/mapreduce-example-reduce-side-join/ (https://www.edureka.co/blog/mapreduce-example-reduce-side-join/) 如果Mapper的key和value不同于Reduce的key和value，你需要设置以下的配置：job.setMapOutputKeyClass(), job.setOutputKeyClass(), job.setMapOutputValueClass(), job.setapOutputValueClass() 不要使用Combiner（job.setCombiner()） 如果Mapper/Reducer的value是一个复杂的object，你需要去实现Writerable Interface class 如果Mapper/Reducer的key是一个复杂的object，你也需要实现WritableComparable Interface 你可以使用ArrayWritable去存储Array values，但是你需要实现它的toString（）函数以便能够将object可入文本文件。 请注意reducer中的迭代值（Iterable values）。当循环遍历迭代value list时，每个object instance（对象实例）在reducer中被循环使用。所以如果你讲他们添加到另一个list时，在流程结束时，新列表中的所有元素都将与您添加到列表中的最后一个对象相同。 提交截止时间： 2019/10/25

FIT5137 Assignment2-2019-Semester2 FIT5137 Individual Assignment – Sem 2/2019 (Weight = 15%) Due date: Week 12, Wednesday 23-Oct-2019, 11:55pm A. General Information and Submission o This is an individual assignment. o Submission method: Submission is online through Moodle. o Penalty for late submission: 10% deduction for each day. o Assignment Coversheet: You will need to sign

MAST90085 – Semester 2, 2019. Assignment #2 Instructions: • The assignment contains 1 problem with 4 questions and is worth a total of 20 marks which will count towards 10% of the final mark for the course. • You must submit electronically (instructions will be announced later) a file with all the R code used

Linux Coursework For the Linux coursework, you must write a Linux script that will complete a set task. This is worth 5% of this module and is open book. There should be sufficient time in the labs to complete the task, but if you are finding it difficult, then you may need to work on