Sökning: "Abdallah Hassan"

Hittade 2 uppsatser innehållade orden Abdallah Hassan.

  1. 1. Column-based storage for analysis of high-frequency stock trading data

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

    Författare :Abdallah Hassan; [2019]
    Nyckelord :;

    Sammanfattning : This study investigated the efficiency of the available open-source columnbased storage formats with support for semi-flexible data in combination with query engines that support querying these formats. Two different formats were identified, Parquet and ORC, and both were tested in two different modes, uncompressed and compressed with the compression algorithm Snappy. LÄS MER

  2. 2. An Assessment of Collaborative Filtering-Based Recommender Systems : And their Ability to take the Individual Preferences of Users into Account

    Kandidat-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC); KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :Abdallah Hassan; Arsalan Syed; [2017]
    Nyckelord :;

    Sammanfattning : This study investigated the effect that aggregation functions and similarity measures had on the accuracy of memory based collaborative filtering algorithms, specifically in the case when the actual rating that a user would provide deviates significantly from the rating that the average user would provide. Nine different combinations of algorithms were implemented by using three different aggregation functions and three different similarity measures. LÄS MER