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    Wyświetlanie 1-7 z 7
    Tytuł:
    An improved comparison of three rough set approaches to missing attribute values
    Autorzy:
    Grzymala-Busse, J. W.
    Grzymala-Busse, W. J.
    Hippe, Z. S.
    Rząsa, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/969797.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    incomplete data sets
    missing attribute values
    approximations for incomplete data
    LERS data mining system
    MLEM2 algorithm
    Opis:
    In a previous paper three types of missing attribute values: lost values, attribute-concept values and "do not care" conditions were compared using six data sets. Since previous experimental results were affected by large variances due to conducting experiments on different versions of a given data set, we conducted new experiments, using the same pattern of missing attribute values for all three types of missing attribute values and for both certain and possible rules. Additionally, in our new experiments, the process of incremental replacing specified values by missing attribute values was terminated when entire rows of the data sets were full of missing attribute values. Finally, we created new, incomplete data sets by replacing the specified values starting from 5% of all attribute values, instead of 10% as in the previous experiments, with an increment of 5% instead of the previous increment of 10%. As a result, it is becoming more clear that the best approach to missing attribute values is based on lost values, with small difference between certain and possible rules, and that the worst approach is based on "do not care" conditions, certain rules. With our improved experimental setup it is also more clear that for a given data set the type of the missing attribute values should be selected individually.
    Źródło:
    Control and Cybernetics; 2010, 39, 2; 469-486
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnosing skin melanoma: current versus future directions
    Autorzy:
    Hippe, Z. S.
    Bajcar, S.
    Blajdo, P.
    Grzymała-Busse, J. P.
    Grzymała-Busse, J. W.
    Knap, M.
    Paja, W.
    Wrzesień, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1954638.pdf
    Data publikacji:
    2003
    Wydawca:
    Politechnika Gdańska
    Tematy:
    melanoma
    TDS
    machine learning in diagnosis
    Opis:
    A new database containing 410 cases of nevi pigmentosi, in four categories: benign nevus, blue nevus, suspicious nevus and melanoma malignant, carefully verified by histopathology, is described. The database is entirely different from the base presented previously, and can be readily used for research based on the so-called constructive induction in machine learning. To achieve this, the database features a different set of thirteen descriptive attributes, with a fourteenth additional attribute computed by applying values of the remaining thirteen attributes. In addition, a new program environment for the validation of computer-assisted diagnosis of melanoma, is briefly discussed. Finally, results are presented on determining optimal coefficients for the well-known ABCD formula, useful for melanoma diagnosis.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2003, 7, 2; 289-293
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    In-situ coal seam and overburden permeability characterization combining downhole flow meter and temperature logs
    Autorzy:
    Busse, J.
    Scheuermann, A.
    Bringemeier, D.
    Hossack, A.
    Li, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1395710.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    coal seam detection
    permeability
    geophysical logging
    exploration
    methodology
    przepuszczalność
    pokłady węgla
    metodyka
    poszukiwania
    Opis:
    The planning and design of any coal mine development requires among others a thorough investigation of the geological, geotechnical and hydrogeological subsurface conditions. As part of a coal mine exploration program we conducted heat pulse vertical flow meter testing. The flow data were combined with absolute and differential temperature logging data to gain information about the hydraulic characteristics of two different coal seams and their over- and interburden. For the strata that were localised based on geophysical logging data including density, gamma ray and resistivity hydraulic properties were quantified. We demonstrate that the temperature log response complements the flow meter log response. A coupling of both methods is therefore recommended to get an insight into the hydraulic conditions in a coal seam and its overburden.
    Źródło:
    Contemporary Trends in Geoscience; 2016, 5, 1; 1-17
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new algorithm for generation of decision trees
    Autorzy:
    Grzymała-Busse, J. W.
    Hippe, Z. S.
    Knap, M.
    Mroczek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1965778.pdf
    Data publikacji:
    2004
    Wydawca:
    Politechnika Gdańska
    Tematy:
    artificial intelligence
    supervised machine learning
    decision trees
    Bayes networks
    Opis:
    A new algorithm for development of quasi-optimal decision trees, based on the Bayes theorem, has been created and tested. The algorithm generates a decision tree on the basis of Bayesian belief networks, created prior to the formation of the decision tree. The efficiency of this new algorithm was compared with three other known algorithms used to develop decision trees. The data set used for the experiments was a set of cases of skin lesions, histopatolgically verified.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2004, 8, 2; 243-247
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Epitypification of the name Epipactis purpurata Sm. (Orchidaceae, Neottieae)
    Autorzy:
    Jakubska-Busse, A.
    Zolubak, E.
    Prockow, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/58658.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    The identity of the holotype of Epipactis purpurata Sm. is shown to be demonstrably ambiguous because all its flowers are at the budding stage (pre-anthesis); thus, no crucial diagnostic characters are visible, i.e., gynostemium morphology and undulations of margins of the labella and their shape and color. This way, the specimen is almost identical with several species of Epipactis genus (E. purpurata group) and including morphologically variable Epipactis helleborine, as many plants of the latter species can have similar combinations of characters like the holotype (i.e., small leaves and a robust stem even in the inflorescence). Thus, an epitype for the name Epipactis purpurata Sm. is proposed (M 257866) in order to enable its precise taxonomic interpretation and achieve nomenclatural stability.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2017, 86, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using ash from incineration of municipal sewage sludge to fertilize Virginia Fanpetals
    Wykorzystanie popiołów ze spalania komunalnych osadów ściekowych do nawożenia ślazowca pensylwańskiego
    Autorzy:
    Wierzbowska, J.
    Sienkiewicz, S.
    Sternik, P.
    Busse, M. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/387760.pdf
    Data publikacji:
    2015
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    ash from incineration of municipal sewage sludge
    Virginia fanpetals
    phosphorus
    heavy metals
    soil
    popiół ze spalania komunalnych osadów ściekowych
    ślazowiec pensylwański
    fosfor
    metale ciężkie
    gleba
    Opis:
    The purpose of this paper was to determine the effect of ash from a sewage sludge incinerating facility on yields and mineral composition of Virginia fanpetals, and on the content of heavy metals in soil. The study was based on a pot experiment in which ash obtained from sewage sludge incineration at the Lyna Wastewater Treatment Plant was used as a substitute of mineral fertilizers. The dominant fertilizing ingredients found in the analyzed ash were phosphorus and calcium. The content of cadmium and lead was lower than the allowable concentrations of these metals in mineral fertilizers. Ash from incinerated sewage sludge did not have any substantial effect on the soil content of the mobile forms of cadmium, copper, lead and chromium. With respect to three metals, namely nickel, zinc and manganese, the medium and high doses of ash raised significantly their concentrations in soil. The rate of ash had no influence on the content of sodium and magnesium in the plants but when the highest dose of ash had been applied, the concentration of calcium in plants rose significantly. Ash modified the content of heavy metals in the plant material only very slightly.
    Celem pracy było określenie wpływu popiołu ze spalania osadów ściekowych na plon i skład mineralny ślazowca pensylwański oraz na zawartość metali ciężkich w glebie. Podstawę badań stanowiło doświadczenie wazonowe, w którym popiół ze spalania osadów ściekowych z oczyszczalni „Łyna” w Olsztynie był stosowany jako substytut nawozów mineralnych. W popiele tym dominującymi składnikami nawozowymi były fosfor i wapń. Zawartość kadmu i ołowiu była niższa od dopuszczalnych stężeń tych metali w nawozach mineralnych. Popiół ze spalania osadów ściekowych nie miał istotnego wpływu na zawartość w glebie z mobilnych form kadmu, miedzi, ołowiu i chromu. Średnie i wysokie dawki popiołu znacznie zwiększyły w glebie zawartość cynku, niklu i manganu. Dawki popiołu nie miał wpływu na zawartość sodu i magnezu w roślinach, natomiast największa dawka popiołu istotnie zwiększyła zawartość wapnia w roślinach. Popiół tylko nieznacznie modyfikował zawartości metali ciężkich w materiale roślinnym.
    Źródło:
    Ecological Chemistry and Engineering. A; 2015, 22, 4; 497-507
    1898-6188
    2084-4530
    Pojawia się w:
    Ecological Chemistry and Engineering. A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the application of sewage sludge compost on the content and leaching of zinc and copper from soils under agricultural use
    Autorzy:
    Bowszys, T.
    Wierzbowska, J.
    Sternik, P.
    Busse, M. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/125278.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    sewage sludge
    composts
    zinc
    copper
    soil leachate
    Opis:
    Municipal sewage sludge can be used in agriculture provided that the permissible levels of heavy metals are not exceeded in either the sewage sludge or in the top layer of soil to be amended by this substance, and that its application does not deteriorate the soil quality. The purpose of this study was to determine the effects of different forms of sewage sludge on the content of Cu and Zn in soil and in soil leachate. The study comprised 2 rotations (potato, spring barley, winter oilseed rape, winter wheat). Each series was composed of the following treatments: NPK, FYM, municipal sewage sludge composted with straw, dried and granulated municipal sewage. FYM and composted sewage were applied once in the rotation (under potato) in a dose of 10 Mg d.m. ha-1 and twice (under potato and under winter oilseed rape) in a dose of 5 Mg d.m. ha-1. In the other years (under spring barley and winter wheat), soil received only mineral fertilization. In order to evaluate the effect of the composts on the leaching of Cu and Zn from soil, a lysimetric experiment was conducted under controlled conditions. Before the experiment, the soil content of Cu was low (1.47 mg kg-1) and Zn was medium (10.11 mg kg-1). The content of copper in the composts ranged from 4.5 to 340.1 mg kg-1 d.m. and that of zinc was from 109.5 to 1310.1 mg kg-1 d.m. The composted sewage sludge significantly raised the soil content of available forms of Cu and Zn, but did not change the soil nutrient abundance class. Fertilization modified the content of the microelements in the soil leachate.
    Źródło:
    Journal of Ecological Engineering; 2015, 16, 1; 1-7
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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