Idempotent
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Projections in RN spaceMath/Linear algebra 2019. 10. 12. 11:59
1. Overview A projection is a linear transformation P from a vector space to itself such that$P^{2}=P$. That is, whenever P is applied twice to any value, it gives the same result as if it were applied once (idempotent). It leaves its image unchanged. Though abstract, this definition of "projection" formalizes and generalizes the idea of graphical projection. One can also consider the effect of ..
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Apache KafkaData Engineering 2019. 9. 5. 01:33
1. Overview Apache Kafka is a community distributed event streaming platform capable of handling trillions of events a day. Initially conceived as a messaging queue, Kafka is based on an abstraction of a distributed commit log. Since being created and open-sourced by LinkedIn in 2011, Kafka has quickly evolved from messaging queue to a full-fledged event streaming platform. Founded by the origin..