Browsing Department of Informatics by Issue Date
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Exact algorithms for MAX2SAT and MAX3SAT via multidimensional matrix multiplication
(The University of Bergen, 20150601)In this thesis it is showed how an $O(n^{4\epsilon})$ algorithm for the cube multiplication problem (that is defined in the thesis) would imply a faster than naive $O^{*}(2^{n(1\frac{\epsilon}{4})})$ algorithm for the ...Master thesis 
Localizing Cell Towers from Crowdsourced Measurements
(The University of Bergen, 20150601)Today, several internet sites exist that aim to provide the locations and number of cellular network antennas worldwide. For example [1],[2] and [3]. What makes this task difficult to accomplish is the lack of information ...Master thesis 
Projective Simulation compared to reinforcement learning
(The University of Bergen, 20150601)This thesis explores the model of projective simulation (PS), a novel approach for an artificial intelligence (AI) agent. The model of PS learns by interacting with the environment it is situated in, and allows for ...Master thesis 
A Survey of LinearProgramming Guided Branching Parameterized Algorithms for Vertex Cover, with Experimental Results
(The University of Bergen, 20150601)A survey of FPT algorithms for Vertex Cover, parameterized by an above guarantee parameter.Master thesis 
Maximum number of objects in graph classes.
(The University of Bergen, 20150531)The focus of this thesis is the study and implementation of two exact exponential time algorihms. These algorihms finds and lists the number of minimal dominating sets and the number of minimal subset feedback vertex ...Master thesis 
SMS OneTime Passwords, Security in TwoFactor Authentication
(The University of Bergen, 20150529)In the past decade, the low price and ease of generating and sending large amounts of SMS have made it possible for many online services to create strong and affordable authentication systems. With the growth of smartphones ...Master thesis 
Implementasjon av attributtbasert tilgangskontroll i elektroniske helsesystemer
(The University of Bergen, 20150528)Tilgangskontroll er et av de viktigste temaene innenfor informasjonssikkerhet[10]. Sensitiv data bør bare kunne aksesseres av autoriserte brukere eller programmer. Denne oppgaven har som hovedmål å undersøke den nåværende ...Master thesis 
Maximum number of edges in graph classes under degree and matching constraints
(The University of Bergen, 20150512)In extremal graph theory, we ask how large or small a property of a graph can be, when the graph has to satisfy certain constraints. In this thesis, we ask how many edges a graph can have with restrictions on its degree ...Master thesis 
Skaping av meirverdi gjennom opne data om kollektivtrafikk
(The University of Bergen, 20150504)Tema i denne oppgåva er opne data, med ei avgrensing mot kollektivtrafikkdata. Djupnestudien er retta mot verksemda til Skyss, det fylkeskommunale kollektivtrafikkselskapet i Hordaland. Omgrepet opne data" inneber ...Master thesis 
Community Detection in Social Networks
(The University of Bergen, 20150501)Social networks usually display a hierarchy of communities and it is the task of community detection algorithms to detect these communities and preferably also their hierarchical relationships. One common class of ...Master thesis 
Efficient CRISPRCas9mediated generation of knockin human pluripotent stem cells lacking undesired mutations at the targeted locus
(Elsevier, 201505)The CRISPRCas9 system has the potential to revolutionize genome editing in human pluripotent stem cells (hPSCs), but its advantages and pitfalls are still poorly understood. We systematically tested the ability of CRISPRCas9 ...Journal article 
Fast Method for MaximumFlow Problem with MinimumLot Sizes
(The University of Bergen, 20150303)In transportation networks, such as pipeline networks for transporting natural gas, it is often impractical to send across amounts of flow below a certain threshold. Such lower threshold is referred as the minimumlot size. ...Master thesis 
Axis patterning by BMPs: cnidarian network reveals evolutionary constraints
(Elsevier, 201503)BMP signaling plays a crucial role in the establishment of the dorsoventral body axis in bilaterally symmetric animals. However, the topologies of the bone morphogenetic protein (BMP) signaling networks vary drastically ...Journal article 
Finding even subgraphs even faster
(Dagstuhl Publishing, 2015)Problems of the following kind have been the focus of much recent research in the realm of parameterized complexity: Given an input graph (digraph) on n vertices and a positive integer parameter k, find if there exist k ...Conference object 
Maximum matching width: New characterizations and a fast algorithm for dominating set
(Dagstuhl Publishing, 2015)We give alternative definitions for maximum matching width, e.g., a graph G has mmw(G) <= k if and only if it is a subgraph of a chordal graph H and for every maximal clique X of H there exists A,B,C \subseteq X with A ...Conference object 
Variants of plane diameter completion
(Dagstuhl Publishing, 2015)The Plane Diameter Completion problem asks, given a plane graph G and a positive integer d, if it is a spanning subgraph of a plane graph H that has diameter at most d. We examine two variants of this problem where the ...Conference object 
NonConstructivity in Kan Simplicial Sets
(Dagstuhl Publishing, 2015)We give an analysis of the nonconstructivity of the following basic result: if X and Y are simplicial sets and Y has the Kan extension property, then Y X also has the Kan extension property. By means of Kripke countermodels ...Conference object 
Parameterized complexity of secluded connectivity problems
(Dagstuhl Publishing, 2015)The Secluded Path problem introduced by Chechik et al. in [ESA 2013] models a situation where a sensitive information has to be transmitted between a pair of nodes along a path in a network. The measure of the quality of ...Conference object 
Fast biclustering by dual parameterization
(Dagstuhl Publishing, 2015)We study two clustering problems, Starforest Editing, the problem of adding and deleting edges to obtain a disjoint union of stars, and the generalization Bicluster Editing. We show that, in addition to being NPhard, none ...Conference object 
Quick but odd growth of cacti
(Dagstuhl Publishing, 2015)Let F be a family of graphs. Given an input graph G and a positive integer k, testing whether G has a ksized subset of vertices S, such that G\S belongs to F, is a prototype vertex deletion problem. These type of problems ...Conference object