A short and comprehensive guide to data warehousing and OLAP operations

What is a data warehouse?

“A data warehouse is a subject ‐oriented, integrated, time ‐variant, and nonvolatile collection of data in support of management’s decision ‐making process [Inm96].” — W. H. Inmon

What is a data warehouse exactly? Simply it is a decision support database that is maintained separately from the organization’s operational database. And it is a repository of information collected from multiple sources, stored under a unified schema, and that usually resides at a single site. …


Word embedding is one of the most powerful concepts of deep learning applied to Natural Language Processing. It is capable of capturing the context of a word in a document, semantic and syntactic similarity, relation with other words, etc. This article is gonna be ideal for those who are new to the concept of word embedding and can get a basic understanding of the need and usage of word embedding.

What is a word embedding?

Word embedding is the collective name for a set of language modeling and feature learning techniques in language modeling where words or phrases from the vocabulary are mapped to vectors…

Chanika Ruchini

CSE undergraduate | University of Moratuwa

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