31.What is Collaborative Filtering? Collaborative filtering (CF) is a method used by some recommender systems. It consists of two senses, a narrow one and a more general one. In general, …
21.What is Sampling and Sampling Distribution? SAMPLING: Sampling is the process of choosing units (ex- people, organizations) from a population of interest so that by studying the sample we can …
11.What all things R environment includes? 1. A suite of operators for calculations on arrays, in particular matrices, 2. An effective data handling and storage facility, 3. A large, coherent, …
1.What do you mean by word Data Science? Data Science is the extraction of knowledge from large volumes of data that are structured or unstructured, which is a continuation of …
11.What is junk dimension? • In scenarios where certain data may not be appropriate to store in the schema, this data (or attributes) can be stored in a junk dimension. …
1.What is the purpose of cluster analysis in Data Warehousing? Cluster analysis is used to define the object without giving the class label. It analyzes all the data that is …
1.What is Oracle? Oracle is a company. Oracle is also a database server, which manages data in a very structured way. It allows users to store and retrieve related data …
1.What is Hyperion? Hyperion is a database that allows you to access the data very quickly. The company was bought by Oracle in 2007 and Oracle has continued to improve …
21.What daemon is used for scheduling of the commands? The crontab command is used for scheduling of the commands to run at a later time. SYNTAX crontab [ -u user …
11.What command can you use to make a tape archive file of a /home directory and send it to the /dev/tape device? The correct command is tar -cvf /dev/tape /home. …
