Ahmed I. A. Al-Ghezi

dblp:201/6149 · also Ahmed Imad Aziz Al-Ghezi · DBLP profile ↗
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5ranked-venue papers
4as first author
4since 2021 · last 2025
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Databases, data management, data science and information retrieval · 5 · 4 first-author · 4 since 2021Artificial intelligence and machine learning · 2 · 2 first-author · 1 since 2021
YearPublicationVenuePosition
2025 Analyzing Student Feedback to Assess NoSQL Education
Vanessa Meyer, Lena Wiese, Ahmed I. A. Al-Ghezi
IDEAS3
2024 Analyzing workload trends for boosting triple stores performance
abstract
The Resource Description Framework (RDF) is widely used to model web data. The scale and complexity of the modeled data emphasized performance challenges on the RDF-triple stores. Workload adaption is one important strategy to deal with those challenges on the storage level. Current workload-adaption approaches lack the necessary generalization of the problem and only optimize part of the storage layer with the workload (mostly the replication). This creates a big performance gap within other data structures (e.g. indexes and cache) that could heavily benefit from the same workload adaption strategy. Moreover, the workload statistics are built collectively in most of the current approaches. Thus, the analysis process is unaware of whether workloads’ items are old or recent. However, that does not simulate the temporal trends that exist naturally in user queries which causes the analysis process to lag behind the rapid workload development. We present a novel universal adaption approach to the storage management of a distributed RDF store. The system aims to find optimal data assignments to the different indexes, replications, and join cache within the limited storage space. We present a cost model based on the workload that often contains frequent patterns. The workload is dynamically and continuously analyzed to evaluate predefined rules considering the benefits and costs of all options of assigning data to the storage structures. The objective is to reduce query execution time by letting different data containers compete on the limited storage space. By modelling the workload statistics as time series, we can apply well-known smoothing techniques allowing the importance of the workload to decay over time. That allows the universal adaption to stay tuned with potential changes in the workload trends.
Ahmed I. A. Al-Ghezi, Lena Wiese
Inf. Syst.1
2022 Analysing Workload Trends for Boosting Triple Stores Performance
Ahmed I. A. Al-Ghezi, Lena Wiese
ADBIS1
2021 Universal Storage Adaption for Distributed RDF-Triple Stores
Ahmed I. A. Al-Ghezi, Lena Wiese
DaWaK1
2018 Adaptive Workload-Based Partitioning and Replication for RDF Graphs
Ahmed I. A. Al-Ghezi, Lena Wiese
DEXA (2)1