Characterising Players of a Cube Puzzle Game with a Two-level Bag of Words

Ponencia presentada en UMAP '21: Adjunct Proceedings of the 29th ACM Conference on User Modeling, Adaptation and Personalization, Utrecht (Netherlands), June 21 - 25, 2021This work explores an unsupervised approach for modelling players of a 2D cube puzzle game with the ultimate goal of customising the game for particular players based solely on their interaction data. To that end, user interactions when solving puzzles are coded as images. Then, a feature embedding is learned for each puzzle with a convolutional network trained to regress the players’ comple tion effort in terms of time and number of clicks. Next, the known bag-of-words technique is used at two levels. First, sets of puzzles are represented using the puzzle feature embeddings as the input space. Second, the resulting first-level histograms are used as input space for characterising players. As a result, new players can be characterised in terms of the resulting second-level histograms. Preliminary results indicate that the approach is effective for char acterising players in terms of performance. It is also tentatively observed that other personal perceptions and preferences, beyond performance, are somehow implicitly captured from behavioural data

Seasonal Data on Morphology and Ecology of Merismopoedia-Like Marine Algae. Taxonomical Implications of the Observed Changes

9 pages, 10 figures, 2 tablesResults of seasonal study on morphology and ecology of interstitial Merismopoedia-like algae are presented in this paper with the aim to compare classical taxonomy with that made by Drouet and Daily after their revision of coccoid Cyanophyceae. [...] Agmenellum thermale, Merismopoedia convoluta, Merismopoedia elegans A. Br. var marina, Merismopoedia glauca, Holopedium, Microcrocis, Anacystis, Coccochloris. [...]Peer reviewe

Longitudinal distribution of macrophytes in the Asturian coast

14 páginas, 3 figuras, 5 cuadros[EN] Eighteen transects in the intertidal zone of the Asturian coast (N of Spain) have been compared by means of different statistical methods to detect the presence of biogeographycal boundaries. The occidental part of the coast has a flora similar to the Galician one, but the characteristic species could not be found going towards the est side of the coast. Galicia ia a region which has a flora very similar to the flora of French Brittany and South Great Britain and Ireland. The relation of the presence of this kind of flora with the existence of an upwelling in the northweast corner of Spain is discussed in the present paper[ES] Se han comparado 18 transectos en la zona intermareal de la costa asturiana (N. de España), utilizando diferentes métodos estadísticos para detectar la presencia de fronteras biogeográficas. La parte occidental de la costa tiene una flora similar a la de Galicia, aunque las especies características no se encuentran en la zona oriental de la costa. La flora gallega es muy similar a la de Bretaña francesa y el sur de Gran Bretaña e Irlanda. En este trabajo se discute además la relación entre la presencia de este tipo de flora y la existencia de un upwelling en la zona noroccidental de EspañaPeer reviewe

Biomarker record variations in lacustrine petroleum source rocks and oil shales: Contribution from Tertiary basins in NE Spain.

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High resolution magnetic stratigraphy in a Late Oligocene lacustrine succesion

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Aplicación del paleomagnetismo al estudio de las sucesiones lacustres oligoceno-miocenicas del SE de la Cuenca del Ebro (NE de España)

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High-resolution magnetic stratigraphy across the Oligocene-Miocene boundary in an alluvial-lacustrine succession (Ebro Basin, northeast Spain)

The study of a late Oligocene-early Miocene, 300 m thick section of alluvial and shallow lacustrine sediments in the Ebro Basin, has allowed a high-resolution magnetic polarity stratigraphy for the Oligocene-Miocene boundary to be established. The samples studied include alluvial sandstones and mudstones as well as shallow lacustrine and paludine, micritic and microsparitic limestones. Two-hundred-and-fifty specimens were stepwise thermally or magnetically demagnetized following standard procedures. Magnetic imprints of the distinct lithologies present sharp contrasts, especially for the stability of the secondary components. The VGP data show 18 reversal events, defining a sequence of 16 polarity intervals. Lateral and vertical continuity of the sequences studied has enabled a correspondence between the local paleomastological biozones and the magnetostratigraphic succession to be established. The high-resolution chronology of this magnetostratigraphic succession provides valuable information that allows the non-marine European biochronological scales to be correlated to the global polarity time scale (GPTS). The magnetic polarity zonation of the section has been correlated to the GPTS using the distinct sequence and pattern polarity reversals as well as by considering the fossil mammal assemblages. As a preliminary result, chrons 8, 7A, 7 and 6C have been identified. © 1994.Peer Reviewe

Origin and diagenesis of the organic matter present in phosphorites generated in a freshwater lake (Cerdanya basin, Eastern Pyrenees)

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Origin and diagenesis of the organic matter in Miocene freshwater lacustrine phosphates (Cerdanya Basin, Eastern Pyrenees)

A suite of samples from the lacustrine facies of the Cerdanya Basin (Miocene) containing early diagenetic phosphatized sediments in several horizons has been examined for phosphate mineralogy and organic content. The phosphates consisted of anapaite and farifeldite occurring as veins, spaherulite beds and septarian-like nodules. The hydrocarbon and fatty acid distributions of the samples studied show that terrestrial inputs were generally predominant throughout the sedimentary record. Furthermore, the good correlation of higher molecular weight n-alkanes and n-alkanoic acids with total organic carbon (TOC) suggests that the productivity of the lake was determined to a large extent by the amounts of detrital organic matter entering into the system. Thus, the phosphate accumulations studied here are different from those of marine origin usually described in the literature. However, several common characteristics are found when comparing these terrestrial phosphate deposits with those of marine origin, namely an intermediate TOC content (0.5-1.3%) and important microbial inputs, suggesting that phosphatogenesis occurred at rather mild oxidizing/reducing conditions and was mediated by intense microbial degradation. Furthermore, the results presented here extend previous observations from marine phosphate basin studies in the sense that phosphate generation seems to be a phenomenon much more dependent on the environmental conditions of deposition and early diagenetic processes rather than on a specific type of sediment or organic matter source. © 1989.Peer Reviewe