  This paper is a tutorial on Formal Concept Analysis (FCA) and its
applications. FCA is an applied branch of Lattice Theory, a mathematical
discipline which enables formalisation of concepts as basic units of human
thinking and analysing data in the object-attribute form. Originated in early
80s, during the last three decades, it became a popular human-centred tool for
knowledge representation and data analysis with numerous applications. Since
the tutorial was specially prepared for RuSSIR 2014, the covered FCA topics
include Information Retrieval with a focus on visualisation aspects, Machine
Learning, Data Mining and Knowledge Discovery, Text Mining and several others.
