Theses - Department of Computer Engineering
Faculty of Engineering
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A privacy-preserving solution for the bipartite ranking problem on spark framework
(Bilkent University, 2017-08)The bipartite ranking problem is defined as finding a function that ranks positive instances in a dataset higher than the negative ones. Financial and medical domains are some of the common application areas of the ranking ... -
Privacy-preserving data sharing and utilization between entities
(Bilkent University, 2017-08)In this thesis, we aim to enable privacy-preserving data sharing between entities and propose two systems for this purpose: (i) a veri able computation scheme that enables privacy-preserving similarity computation in the ... -
Identification of cancer patient subgroups via pathway based multi-view graph kernel clustering
(Bilkent University, 2017-08)Characterizing patient genomic alterations through next-generation sequencing technologies opens up new opportunities for re ning cancer subtypes. Di erent omics data provide di erent views into the molecular biology of ... -
Libraries and tools for viewing and editing biological maps in SBGN
(Bilkent University, 2017-08)Information about cellular processes and pathways is becoming increasingly available in detailed, computable standard formats including Systems Biology Graphical Notation (SBGN). E ective visualization of this information ... -
Data analytics for alarm management systems
(Bilkent University, 2017-04)Mobile network operators run Operations Support Systems (OSS) that produce vast amounts of alarm events. These events can have different significance levels, domains, and also can trigger other ones. Network Operators face ... -
Characterization of short tandem repeats using local assembly
(Bilkent University, 2017-03)Tandem repeats are pieces of DNA where a pattern has multiple consecutive copies adjacent to itself. If the repeat unit (pattern) consists of 2 to 6 nucleotides, it can be referred to as a short tandem repeat or a ... -
A utility maximizing and privacy preserving approach for protecting kinship in genomic databases
(Bilkent University, 2017-03)Rapid and low cost sequencing of genomic data enables widespread use of genomic information in research studies and personalized customer applications, where people share their genomic data in public databases. Although ... -
Object detection using optical and lidar data fusion with graph-cuts
(Bilkent University, 2017-03)Object detection in remotely sensed data has been a popular problem and is commonly used in a wide range of applications in domains such as agriculture, navigation, environmental management, urban monitoring and mapping. ... -
Reducing communication volume overhead in large-scale parallel SpGEMM
(Bilkent University, 2016-12)Sparse matrix-matrix multiplication of the form of C = A x B, C = A x A and C = A x AT is a key operation in various domains and is characterized with high complexity and runtime overhead. There exist models for parallelizing ... -
Locality-aware distributed state partitioning for stream processing systems
(Bilkent University, 2016-12)Today, there are many applications that deal with high-volume data streams. These distributed stream processing applications process data on-the-fly and provide real-time distributed computing for big data. Due to the ... -
Perceptually-driven computer graphics and visualization
(Bilkent University, 2016-10)Despite the rapid advances in computer graphics technology, enhancing the visual quality and lowering the rendering cost is still the essential goal for computer graphics researchers; since improvements in computational ... -
Mobile image search using multi-image queries
(Bilkent University, 2015-08)Visual search has evolved over the years, according to the demand of users. Single image query search systems are inadequate to represent a query object, because they are limited to a single view of the object. Therefore, ... -
Real-time prediction based snow and rain accumulation in virtual environments
(Bilkent University, 2016-09)Although weather effects have been developed thoroughly in offine renderings, their computational cost exceed current hardware to run them in real-time. Therefore, less expensive methods are developed. Still, in many ... -
Automatic detection of compound structures by joint selection of region groups from multiple hierarchical segmentations
(Bilkent University, 2016-09)A challenging problem in remote sensing image interpretation is the detection of heterogeneous compound structures such as different types of residential, industrial, and agricultural areas that are comprised of spatial ... -
Reordering methods for exploiting spatial and temporal localities in parallel sparse matrix-vector multiplication
(Bilkent University, 2016-09)Sparse Matrix-Vector multiplication (SpMV) is a very important kernel operation for many scientific applications. For irregular sparse matrices, the SpMV operation suffers from poor cache performance due to the irregular ... -
A utilization based genetic algorithm for virtual machine placement in cloud computing systems
(Bilkent University, 2016-09)Due to increasing demand for cloud computing and related services, cloud providers need to come up with methods and mechanisms that increase performance, availability and reliability of datacenters and cloud computing ... -
Read mapping methods optimized for multiple GPGPU
(Bilkent University, 2016-09)DNA sequence alignment problem can be broadly defined as the character-level comparison of DNA sequences obtained from one or more samples against a database of reference (i.e., consensus) genome sequence of the same or a ... -
Software tools for visual analysis of cancer genomics data in the context of pathways
(Bilkent University, 2016-09)Information visualization is concerned with effective visual presentation of abstract information, which reinforces human cognition. Graphs are structures that are well suited to represent relational information. Graph ... -
Goowe : geometrically optimum and online-weighted ensemble classifier for evolving data streams
(Bilkent University, 2016-08)Designing adaptive classifiers for an evolving data stream is a challenging task due to its size and dynamically changing nature. Combining individual classifiers in an online setting, the ensemble approach, is one of the ... -
Improving educational search and question answering
(Bilkent University, 2016-08)Students use general web search engines (GSEs) as their primary source of research while trying to find answers to school related questions. Although GSEs are highly relevant for the general population, they may return ...
