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In this article, we describe a system that classifies relations between entities extracted from an image. We started from the idea that we could utilize lexical and semantic information from text associated with the image, such as captions or surrounding text, rather than just the geometric and visual characteristics of the entities found in the image. We collected a corpus of images from Wikipedi
Abstract in UndeterminedSignal detection algorithms providing likelihood informationfor coded spatial-multiplexing multiple-input multipleoutput(MIMO) wireless communication system pose a criticaldesign challenge due to their prohibitively high computationalcomplexity. In this paper, we present a low-complexity soft-outputdetection algorithm by adopting four implementation-friendlyalgorithm-level
A novel low-complexity detection scheme is proposed for the multiple-input multiple-output (MIMO) single-carrier frequency division-multiple access (SC-FDMA) systems, which is suitable for ASIC implementations. The proposed detection scheme makes an initial estimate of the transmitted signal based on a minimum mean square error (MMSE) frequency domain equalizer (FDE) detector and finds symbols wit
Control of network systems with uncertain local dynamics has remained an open problem for a long time. In this paper, a distributed minimax adaptive control algorithm is proposed for such networks whose local dynamics has an uncertain parameter possibly taking finite number of values. To hedge against this uncertainty, each node in the network collects the historical data of its neighbouring nodes
We study dynamics in a network of interacting agents updating their binary states according to a time-varying threshold rule. Specifically, agents revise their state asynchronously by comparing the weighted average of the current states of their neighbors in the interaction network with possibly heterogeneous time-varying threshold values. Such thresholds are determined by an exogenous signal repr
Conflict-driven pseudo-Boolean solvers optimize 0-1 integer linear programs by extending the conflict-driven clause learning (CDCL) paradigm from SAT solving. Though pseudo-Boolean solvers have the potential to be exponentially more efficient than CDCL solvers in theory, in practice they can sometimes get hopelessly stuck even when the linear programming (LP) relaxation is infeasible over the real
Low-Power Wide-Area Networks operating in the unlicensed bands are being deployed to connect a rapidly growing number of Internet-of-Things devices. While the unlicensed sub-GHz band offers favorable propagation for long-range connections, measurements show that the energy consumption of the nodes is still mostly dominated by the wireless transmission affecting their autonomy. We investigate the p
Pseudo-random functions are a fundamental building block in many cryptographic applications. In certain scenarios, a weaker notion (where security is restricted to uniformly random input), but more computationally efficient, called weak pseudo-random functions, is sufficient. In this work, we present new differential attacks on the main binary weak pseudo-random function constructions, namely the
We apply the statistical sparse jump model, a recently developed, interpretable and robust regime-switching model, to infer key features that drive the return dynamics of the largest cryptocurrencies. The algorithm jointly performs feature selection, parameter estimation, and state classification. Our large set of candidate features are based on cryptocurrency, sentiment and financial market-based
When creating models of a system, there is always a tradeoff between the ease of modelling a part and the increased value it brings to the model. Learning a model using machine learning instead, we are able to capture all kinds of things we don't necessarily understand, but can need large amounts of data to learn even the things we find simple. Using universal differential equations we can combine
A sports video analysis application was developed by Spiideo for mobile devices. It presents recordings from practices and competitive games for game-play analysis. Available tools, such as on-screen drawings, require a robust background foreground segmentation. The currently used segmentation method have difficulties to master the shifting conditions in weather, shadows and shirt colors. The pu
Postadress Box 117 Besöksadress Scheeletorget 1, 221 00 Lund Telefon 046-222 45 77, 046-222 00 00 E-post tina.trollas@fs.lu.se Webbadress www.lu.se Forskningsnämnden Uppdragsbeskrivning för den universitetsgemensamma forskningsnämndens arbetsgrupp för forskningsinfrastruktur Bakgrund Forskningen vid Lunds universitet behöver stödjas av ändamålsenlig och tillgänglig infrastruktur. Processerna röran
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Popular Abstract in Swedish Immunsystemet är ett invecklat och komplext system som finns överallt i kroppen och som inte är begränsat till ett enda organ. Vi utsätts hela tiden för ”angrepp” från mikro-organismer (t.ex. bakterier eller virus) men också för främmande ämnen som kan vara skadliga eller giftiga. Immunsystemets huvudfunktion är att hjälpa kroppen att känna igen dessa ”angripare” och atThe overall aim of this PhD project was to gain insight into the incidence of primary immunodeficiency (PID) in southern Sweden and to optimize diagnostic and treatment measures for these patients. We estimated the occurrence rate of PID in the pediatric population of southern Sweden during a period of 4 years and described the demographic, clinical and immunological characteristics of the identif
The active site of the [FeFe] hydrogenases contains two Fe ions bound to one Cys ligand, three CO molecules, two CN(-) ions, and a dithiolate ligand. The nature of the last of these has been much discussed, and it has been suggested that it contains C, N, or O as the bridgehead atom. Most experimental studies indicate a N atom, whereas a recent density functional theory (DFT) study of a crystal st
Popular Abstract in Swedish Ofrivilligt urinläckage, urininkontinens, omfattar mer än 50 miljoner människor i världen, varav cirka 500 000 i Sverige. Av dessa beräknas 2/3 vara kvinnor. Ofrivilligt urinläckage är ett medicinskt och socialt handikapp för den drabbade, operation och hjälpmedel förorsakar samhället stora kostnader. Risken för urininkontinens ökar med stigande ålder. I svenska studierAbstract Pelvic floor disorders (PFD) represent a major public health issue worldwide. Aims of this work Study I: to investigate associations between preoperative resting urethral parameters (MUCP, FL and CA) and objective outcome of laparoscopic colposuspension and, if possible, to identify cutoff values useful in clinical practice. Study II: to investigate a group of perimenopausal women reporti
EG har kontinuerligt ägnat sig åt reglering av kemiska produkter. 1967 antogs första rättsakten som rörde kemikaliekontroll. Under 1960- och 70-talen antogs gemenskapslagstiftning främst för att undanröja hinder för den gemensamma inre marknaden och därmed främja den fria varurörligheten. Under 1980-talet blev miljöskydd ensamt skäl att anta lagstiftning på kemikalieområdet. Genom åren har ett ant
Poor public perception can obstruct a construction project in a damaging way. Knowledge about public opinion should be considered as a relevant area of expertise for project managers and as an essential cost element in the planning and completion of construction projects. A consensual approach to a siting controversy requires informal face-to-face interaction among chosen representatives from all
This study describes the chydorid (Branchiopoda, Anomopoda) assemblages from 66 European shallow lakes, and presents data relating the assemblages to lake type and ecological quality. Forty species, out of a total recorded European fauna of 60 species, were found in the study sites. No significant differences were found between chydorid assemblages associated with rock and plant substrata. Pattern
The bone material from three archaeological occupation phases at Huseby Klev provides the best source of evidence currently available about the subsistence strategies of pioneer settlers in Northern Europe. The results from Huseby Klev indicate that the pioneer settlers initially relied heavily on marine mammals for their sustenance. This subsistence strategy changed during the second and third oc
