Sökning: "Hashing"

Visar resultat 16 - 20 av 31 uppsatser innehållade ordet Hashing.

  1. 16. Automatic error detection and switching of redundant video signals, with focus on loop detection

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Datavetenskap

    Författare :Aleksander Zdunek; [2018]
    Nyckelord :;

    Sammanfattning : This report describes work done on implementing automatic detection of looping frame sequences in a video signal. The central loop detection algorithm is described. Hashing of video frames is used as a means of improving computational performance. LÄS MER

  3. 17. An investigation of categorical variable encoding techniques in machine learning: binary versus one-hot and feature hashing

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Cedric Seger; [2018]
    Nyckelord :categorical features; feature hashing; binary encoding; classi- fication; kategoriska variabler; feature hashing; binär kodning; klassi- ficering;

    Sammanfattning : Machine learning methods can be used for solving important binary classification tasks in domains such as display advertising and recommender systems. In many of these domains categorical features are common and often of high cardinality. LÄS MER

  4. 18. Java GPU vs CPU Hashing Performance

    Kandidat-uppsats, Mittuniversitetet/Avdelningen för informationssystem och -teknologi

    Författare :Zhuowen Fang; [2018]
    Nyckelord :Blockchain; SHA-256; CPU; GPU; Java; JOCL; PoW;

    Sammanfattning : In the latest years, the public’s interest in blockchain technology has been growing since it was brought up in 2008, primarily because of its ability to create an immutable ledger, for storing information that never will or can be changed. As an expanding chain structure, the act of nodes adding blocks to the chain is called mining which is regulated by consensus mechanism. LÄS MER

  5. 19. Hashing algorithms : A comparison for blockchains in Internet of things

    Kandidat-uppsats, Mittuniversitetet/Avdelningen för informationssystem och -teknologi

    Författare :Karl Dahlin; [2018]
    Nyckelord :Internet of things; Blockchain; Hash; Hashing algorithms; MD5; SHA; C ; Matlab;

    Sammanfattning : In today’s society blockchains and the Internet of things are two very discussed subjects this has led to thoughts about combining them by using a blockchain in Internet of things. This objective of this study has been to solve the problem which hashing algorithms is the best for a blockchain used in an Internet of things network. LÄS MER

  7. 20. Preventing SQL Injections by Hashing the Query Parameter Data

    Kandidat-uppsats, Blekinge Tekniska Högskola/Institutionen för datalogi och datorsystemteknik

    Författare :Patrik Lokby; Manfred Jönsson; [2017]
    Nyckelord :SQL injection; Proxy; MD5 hash; Regex.;

    Sammanfattning : Context. Many applications today use databases to store user informationor other data for their applications. This information can beaccessed through various different languages depending on what typeof database it is. Databases that use SQL can maliciously be exploitedwith SQL injection attacks. LÄS MER