Search results for "RETRIEVAL"
showing 10 items of 1176 documents
Change in Human Technology's Publisher: Continued Focus on Open Access Human-Technology Research
2016
Searching the Web for conflicting topics: Page and user factors
2013
Web users tend to search only the pages displayed at the top of the search engine results page (the 'top link' heuristic). Although it might be reasonable to use this heuristic to navigate simple and unambiguous facts, it might be risky when searching for conflicting socio-scientific topics, such as potential measures to reduce greenhouse gas emissions. In the present study, we explored the extent to which students consider other Web page characteristics, such as topic relevance and trustworthiness, when searching and bookmarking pages concerning a conflicting topic. We also examined the extent to which prior background knowledge moderates students' behavior. The results revealed that while…
Hyperspectral Texture Metrology Based on Joint Probability of Spectral and Spatial Distribution
2021
International audience; Texture characterization from the metrological point of view is addressed in order to establish a physically relevant and directly interpretable feature. In this regard, a generic formulation is proposed to simultaneously capture the spectral and spatial complexity in hyperspectral images. The feature, named relative spectral difference occurrence matrix (RSDOM) is thus constructed in a multireference, multidirectional, and multiscale context. As validation, its performance is assessed in three versatile tasks. In texture classification on HyTexiLa, content-based image retrieval (CBIR) on ICONES-HSI, and land cover classification on Salinas, RSDOM registers 98.5% acc…
Standard Vs Uniform Binary Search and Their Variants in Learned Static Indexing: The Case of the Searching on Sorted Data Benchmarking Software Platf…
2023
Learned Indexes are a novel approach to search in a sorted table. A model is used to predict an interval in which to search into and a Binary Search routine is used to finalize the search. They are quite effective. For the final stage, usually, the lower_bound routine of the Standard C++ library is used, although this is more of a natural choice rather than a requirement. However, recent studies, that do not use Machine Learning predictions, indicate that other implementations of Binary Search or variants, namely k-ary Search, are better suited to take advantage of the features offered by modern computer architectures. With the use of the Searching on Sorted Sets SOSD Learned Indexing bench…
ERP-implementering i en SMB : en casestudie i en kunnskapsintensiv bedrift
2011
Masteroppgave i informasjonssystemer- Universitetet i Agder 2011 Denne masteroppgaven bygger på en casestudie i et forlag. Hensikten med studien er dermed å avdekke hvilke utfordringer som kan relateres til implementeringen av et Enterprise Resource Planning system (ERP-system) i et forlag. Konteksten forlaget befinner seg i er spesiell for implementeringen av et ERP-system. Et forlag er en kunnskapsintensiv bedrift, og kjernekompetansen ligger i utnyttelsen av kunnskap for å tilby produkter av høy kvalitet. Ansatte i en kunnskapsintensiv bedrift er avhengige av fleksibilitet og et forlag møter dermed spesielle utfordringer relatert til implementeringen av et ERP-system. Hensikten med et ER…
Kritiske utfordringer ved implementering av et ERP-system i en SMB : en casestudie i en norsk bedrift
2011
Masteroppgave i informasjonssystemer- Universitetet i Agder 2011 ERP-systemer (Enterprise Resource Planning) er virksomhetsomspennende informasjonssystemer som stadig flere bedrifter tar i bruk. Spørsmålet som oftest stilles er ikke lenger om man skal anskaffe et ERP-system; det er hvilket system man skal anskaffe. Stadig mindre bedrifter implementerer ERP-systemer, også flere og flere SMBer (små og mellomstore bedrifter) med knappe ressurser. Implementeringsfasen blir dermed utfordrende for mange. En gjennomsnittlig SMB sitter på liten eller ingen kompetanse om ERP-systemer, og de fleste søker derfor hjelp av konsulenter. Denne masteroppgaven bygger på en casestudie gjennomført i bedriften…
Cascaded adaptive-mask algorithm for twin-image removal and its application to digital holograms of ice crystals.
2009
An iterative Gerchberg-Saxton-type algorithm with a support constraint for twin-image removal from reconstructed Gabor inline holograms of single plane objects is described. It is applied to simulated holograms and to holograms of ice crystals recorded in the laboratory and in atmospheric clouds in situ. The algorithm is characterized by a distinction between object and background region and an iterative adaption of the object mask. Applying the algorithm to recorded inline holograms of atmospheric objects, the twin-image artifacts are removed successfully, for the first time allowing for a proper access to the in situ phase information on atmospheric ice crystals. It is also demonstrated t…
Sex Classification of Face Areas
1998
Human subjects and an artificial neural network, composed of an autoassociative memory and a perceptron, gender classified the same 160 frontal face images (80 male and 80 female). All 160 face images were presented under three conditions (1) full face image with the hair cropped (2) top portion only of the Condition 1 image (3) bottom portion only of the Condition 1 image. Predictions from simulations using Condition 1 stimuli for training and testing novel stimuli in Conditions 1, 2, and 3, were compared to human subject performance. Although the network showed a fair ability to generalize learning to new stimuli under the three conditions, performing from 66 to 78% correctly on novel fa…
AUTOMATIC ORGANIZATION OF MULTIMEDIA DATA COLLECTIONS
2014
La fotografia digitale ha avuto uno sviluppo sempre crescente negli ultimi dieci anni. Prima la diminuzione dei prezzi delle apparecchiature di acquisizione e poi l’integrazione di queste nei dispositivi portatili di uso quotidiano (i.e. smartphone, tablet) ha permesso a chiunque di potere creare e conservare semplicemente un enorme numero di immagini. Inoltre l’immagine stessa é diventata uno strumento di comunicazione, portando alla nascita di social networks basati unicamente sulla condivisione di fotografie (flickr, instagram, etc...). La gestione di tali quantitá di dati é quindi diventato un problema reale per molti utenti, in quanto il ritrovamento e l’organizzazione di questi dati é…
Multifacet structure of observed reconstructed integral images.
2005
Three-dimensional images generated by an integral imaging system suffer from degradations in the form of grid of multiple facets. This multifacet structure breaks the continuity of the observed image and therefore reduces its visual quality. We perform an analysis of this effect and present the guidelines in the design of lenslet imaging parameters for optimization of viewing conditions with respect to the multifacet degradation. We consider the optimization of the system in terms of field of view, observer position and pupil function, lenslet parameters, and type of reconstruction. Numerical tests are presented to verify the theoretical analysis.