The Beard Sage

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Inspecting word2vec Matrices

posted in Machine Learning on March 23, 2020 by TheBeard 0 Comments

A detailed look inside the weight matrices of the word2vec model. Both CBOW and SkipGram models are discussed

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Extended PushDown Automaton transitions

posted in Theoretical Computer Science on March 22, 2020 by TheBeard 1 Comment

A short examination of extended PushDown Automaton transitions and their equivalence with PushDown Automaton transitions.

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Virtual Memory – Translation-Lookaside Buffer (TLB)

posted in Computer Architecture on March 21, 2020 by TheBeard 0 Comments

A look at the inner workings of a TLB. The operational view of a TLB under a hit and miss are discussed along with its interactions with Virtual Memory and Cache.

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N-gram Language Models

posted in Machine Learning on March 20, 2020 by TheBeard 0 Comments

The concept of language models as a sequence of words is explored via probabilistic interpretations.

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PushDown Automaton transitions

posted in Theoretical Computer Science on March 19, 2020 by TheBeard 0 Comments

This article discusses the different transition scenarios in a Pushdown Automaton with respect to reading the input and modifying the stack.

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Virtual Memory – Writes and Protection

posted in Computer Architecture on March 18, 2020 by TheBeard 0 Comments

A brief discussion on how the operating system enforces protection in a Virtual Memory system.

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Virtual Memory – Page Table Size

posted in Computer Architecture on March 17, 2020 by TheBeard 0 Comments

This article reasons why a small Page Table size is preferred and lists several techniques to reduce the Page Table size.

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Context-Free Grammars and Parse Trees

posted in Theoretical Computer Science on March 16, 2020 by TheBeard 0 Comments

This article discusses the concept of ambiguity using parse-trees. Observations about parse-trees for grammars in Chomsky Normal Form are also mentioned.

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Virtual Memory – Address Translation

posted in Computer Architecture on March 15, 2020 by TheBeard 0 Comments

The article explores the address translation process in Virtual Memory. The concept of Page Tables is explained and bit Hit and Fault scenarios are discussed.

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Virtual Memory – The Basics

posted in Computer Architecture on March 14, 2020 by TheBeard 0 Comments

A basic introduction to the concept of Virtual Memory and why it is needed.

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