|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/data-science-interview-preparation-guide/
课程评论：没有评论
课程名称：数据科学面试准备指南 课程概述：成为数据科学家是当前最具吸引力和未来保障的职业之一，Glassdoor连续三年评选其为美国最佳工作，具有良好的未来增长前景和中位基本年薪11万美元。讲师最近从计算机科学博士生转型为一家大型科技公司的高级数据科学家。本课程提供了150多个典型数据科学面试问题及其答案，包括机器学习、神经网络、深度学习、统计学、实践经验、大数据技术、SQL、计算机科学、文化匹配、面试官提问及脑筋急转弯等内容。学员将学习解答如下问题：什么是偏差-方差权衡？如何评估不平衡数据上的算法？在何种情况下使用梯度下降（GD）而不是随机梯度下降（SDG）？为什么分割CNN通常具有编码器-解码器结构？Softmax非线性函数为何通常用作网络的最后操作？在从100个硬币中随机抽取一个（其中有1个不公平硬币和99个公平硬币）并掷10次得到10次正面的结果时，抽到不公平硬币的概率是多少？给定以下统计数据，女性在阳性乳腺X光结果下患癌症的概率是多少？如何编写SQL查询以从员工表中获取第二高的薪水？无序数组的搜索平均时间复杂度是多少？你为什么想在这里工作？如何仅用一个骰子生成1到7之间的随机数？ 讲师简介：讲师是大型科技公司的高级数据科学家，刚完成计算机科学博士学位，已成功转向行业，拥有超过5年的大学教学经验。
Being a data scientist is one of the most lucrative and future proof careers with Glassdoor naming it the best job in America for the third consecutive year in a row with great future growth prospects and a median base salary of $110,000. I have recently made the transition from being a PhD student in Computer Science to a Senior Data Scientist at a large tech company. In this course I give you all the questions and answers that I used to prepare for my data science interviews as well as the questions and answers that I now expect when I am giving interviews to potential data science candidates. The course provides a complete list of 150+ questions and answers that you can expects in a typical data science interview including questions on machine learning, neural networks and deep learning, statistics, practical experience, big data technologies, SQL, computer science, culture fit, questions for the interviewer and brainteasers. What questions will you learn the answer to? What is the bias-variance tradeoff?How would you evaluate an algorithm on unbalanced data?When would you use gradient descent (GD) over stochastic gradient descent (SDG), and vice-versa?Why do segmentation CNNs typically have an encoder-decoder style / structure?Why we generally use Softmax non-linearity function as last operation in-network?You randomly draw a coin from 100 coins - 1 unfair coin (head-head), 99 fair coins (head-tail) and roll it 10 times. If the result is 10 heads, what is the probability that the coin is unfair?Given the following statistic, what is the probability that a woman has cancer if she has a positive mammogram result? 1% of women have breast cancer, 90% of women who have breast cancer test positive on mammograms and 8% of women will have false positives.Write a SQL query to get the second highest salary from the Employee table. If there is no second highest salary the query should return null.What is the average time complexity to search an unsorted array?Why do you want to work here?How can you generate a random number between 1 - 7 with only a die?About the instructor:Senior Data Scientist at a large tech companyRecently finished PhD in Computer Science and moved to industry5+ years teaching experience at university level
