RWTH I5 - Theses
http://dbis.rwth-aachen.de/cms/theses/RSS2
RWTH I5 Theses
en-usMapping between Application Models and a Generic Data Model in Java/Scala
http://dbis.rwth-aachen.de/cms/theses/mapping-between-application-models-and-a-generic-data-model-in-java-scala
quixWed, 04 Apr 2018 17:07:46 +0200Interactive User Interface for Querying Semi-Structured Data
http://dbis.rwth-aachen.de/cms/theses/interactive-user-interface-for-querying-semi-structured-data
quixWed, 04 Apr 2018 16:48:19 +0200Entwicklung einer Data-Lake-Informationsarchitektur für einen Entwicklungsdienstleister im Automotive-Bereich
http://dbis.rwth-aachen.de/cms/theses/entwicklung-einer-data-lake-informationsarchitektur-fur-einen-entwicklungsdienstleister-im-automotive-bereich
quixWed, 28 Mar 2018 09:20:01 +0200Mobility Service Payment using Privacy-Preserving Interval Operations
http://dbis.rwth-aachen.de/cms/theses/ridesharing-payment-using-privacy-preserving-interval-operations
Together with the IT security chair, we'd like to investigate the possibilities of employing cryptographic oprations for bartering in ride sharing scenarios. samselFri, 17 Nov 2017 10:28:58 +0100Process Interaction across Blockchains
http://dbis.rwth-aachen.de/cms/theses/process-interaction-across-blockchains
FIT and Bosch offer in collaboration two Master Theses: Combination of different application specific blockchains and registry of services governed by blockchainsosterlandFri, 10 Nov 2017 10:16:25 +0100Linking DevOps Tools to Social Requirements Engineering
http://dbis.rwth-aachen.de/cms/theses/reqbaz-devops
korenFri, 27 Oct 2017 14:10:48 +0200From End User Needs to New Products Using the House of Quality
http://dbis.rwth-aachen.de/cms/theses/reqbaz-houseofquality
korenFri, 27 Oct 2017 14:09:16 +0200Personalizing the User Interface of Requirements Bazaar
http://dbis.rwth-aachen.de/cms/theses/reqbaz-personalization
korenFri, 27 Oct 2017 14:08:05 +0200Service Provisioning for Mobile Edge Cloud Computing
http://dbis.rwth-aachen.de/cms/theses/service-provisioning-for-mobile-edge-cloud-computing-1
klammaThu, 26 Oct 2017 12:47:21 +0200Learning Analytics for Microservice-based Distributed Social Software
http://dbis.rwth-aachen.de/cms/theses/LA-Distributed-Social-Software
langeWed, 25 Oct 2017 12:44:45 +0200Evaluating the performance of all-pairs personalized page rank
http://dbis.rwth-aachen.de/cms/theses/all-pair-PPR
Recently, a new approach for computing the personalized pagerank (PPR) for all nodes in a graph was presented by the adviser of this thesis.
Personalized pagerank can be used to determine how important specific nodes in a graph are from the viewpoint of a specific node, or set of nodes.
For example, it can be used to determine which web pages are relevant for a user, given a set of pages he has visited before.
The improvement which the advisor of the thesis devised is useful when the PPR has to be computed for all nodes in the graph.
The gain in speed is due to reuse of already computed PPR values for other nodes and a clever ordering of nodes.
The student working on this thesis will experiment with this technique and others. First, the student needs to investigate ways to parallelize the algorithms and analyse the algorithms and their parameters experimentally.
For a master thesis, the student has to improve the algorithm to optimize loops and experiment whether other improvements in the ordering pay of (i.e., whether other heuristics for finding the order work better and can be computed fast enough to speed up the overall algorithm). Besides, the student would investigate parallel computation of the order and actual PPR.
External resources:
https://pdfs.semanticscholar.org/c63e/b92a805c3eb636865ecfbd799fda32194753.pdf
http://users.jyu.fi/~miselico/papers/GlobalRDFEmbedding.pdf sections 3.2-4
cochezMon, 23 Oct 2017 12:28:40 +0200Decidability of logical equivalence problem for plain SO tgds
http://dbis.rwth-aachen.de/cms/theses/decidability-of-logical-equivalence-problem-for-plain-so-tgds
HaiMon, 23 Oct 2017 11:38:46 +0200Including Attributes in a Graph Embedding
http://dbis.rwth-aachen.de/cms/theses/graph-embedding-attributes
Lately several methods for embedding graphs nodes into a vector space have been proposed. These embeddings can then used to train other machine learning models. Most approaches will, however, only keep relations between nodes representing entities in the graph into account. If the graph also has nodes representing literal values (numbers, strings, etc.) then they are ignored.
In this thesis, the student will investigate how these attributes can be included in the embedding.cochezFri, 29 Sep 2017 18:58:48 +0200Optimizing Mining Maximal Frequent Patterns with MFPAS
http://dbis.rwth-aachen.de/cms/theses/maximal-freq-patterns
Recently, a new approach for finding maximal frequent patterns (MFPAS) was presented by the supervisor and advisers of this thesis. Several further optimizations of the algorithm are possible. The student working on this thesis will experiment with different optimization possibilities and analyse their effect experimentally.
For a master thesis, further theoretical analysis of the optimizations and the original algorithm are necessary.
Related paper: M. R. Karim, M. Cochez, O. D. Beyan, C. F. Ahmed, and S. Decker. Mining maximal frequent patterns in transactional databases and dynamic data streams: a spark-based approach. Information Sciences, 2017a
cochezFri, 29 Sep 2017 18:54:34 +0200Measuring coherence accross media in learning environments
http://dbis.rwth-aachen.de/cms/theses/measuring-coherence-accross-media-in-learning-environments
Computer linguistics has provided impressive results for measuring the quality of writing, e.g. for automatic essay scoring. Multimedia content based indexing delivered a lot of models for the analysis of multimedia materials. In modern educational platforms, e.g. MOOCs and self-regulated learning platforms. In consequence, multimedia materials are produced by educational designers but also by the learners during their learning processes. Coherence is a semantic measure for the local and global connectivity of e.g. sentences, paragraphs, videos, slides among others.
To measure the coherence of multimedia materials many computational methods reaching from natural language processing to machine learning needs to be combined in a common coherence model. Goal of this master thesis is to co-develop a coherence model for cross-media coherence and to prototypical combine a few of these computational methods for one or two analysis scenarios, e.g. a MOOC or a webinar. klammaThu, 28 Sep 2017 16:54:53 +0200