1,956 research outputs found
Edit Distance-Based Classification of Symbol Sequences
No full textThere are many types of sequences on which classification algorithms are applied. Sequences of symbols with information on the relation between every two direct successors (referred to as link information) is one of these. A common approach for classification of such sequences is to only consider the symbols and disregard the link information. However, this can be at the expense of the quality of the classifications. In this thesis, we show how the edit distance can be used to classify sequences based on its symbols as well as its link information. The edit distance is an alignment-based pairwise dissimilarity metric. Its definition depends on the structural representation of the instances that are compared. The set of edit operations determines in which ways instances can be modified. Applying an edit operation comes with a certain edit cost that is given by its cost function. The edit distance between two instances is the least expensive sequence of edit operations that transforms the one into the other. The symbols, link information and order of a sequence can be represented by the attributed graph data structure. For every edit operation, a model of its impact has been presented. The cost function of an edit operation is based on the variable(s) on which the model of its impact relies. The cost functions are defined in the edit cost model. Using the parameters of the edit cost model, the definition of the cost functions can be controlled. The edit distance is optimized for classification by finding the values of the edit cost model's parameters that minimize the average intra-class dissimilarity and maximize the average inter-class dissimilarity. Results of experiments conducted on real and artificial data show that classifications based on the edit distance can outperform both models that only incorporate symbols and models that incorporate the symbols, link information and order of sequences. In addition, the results show that the classification performance is positively correlated with the length of the sequences. A limitation of the presented method is that optimization of the edit distance can be computationally expensive.Electrical Engineering, Mathematics and Computer ScienceIntelligent System
Seabed foraging by Antarctic krill: Implications for stock assessment, bentho-pelagic coupling, and the vertical transfer of iron
No full textA compilation of more than 30 studies shows that adult Antarctic krill (Euphausia superba) may frequent benthic habitats year-round, in shelf as well as oceanic waters and throughout their circumpolar range. Net and acoustic data from the Scotia Sea show that in summer 2-20% of the population reside at depths between 200 and 2000 m, and that large aggregations can form above the seabed. Local differences in the vertical distribution of krill indicate that reduced feeding success in surface waters, either due to predator encounter or food shortage, might initiate such deep migrations and results in benthic feeding. Fatty acid and microscopic analyses of stomach content confirm two different foraging habitats for Antarctic krill: the upper ocean, where fresh phytoplankton is the main food source, and deeper water or the seabed, where detritus and copepods are consumed. Krill caught in upper waters retain signals of benthic feeding, suggesting frequent and dynamic exchange between surface and seabed. Krill contained up to 260 nmol iron per stomach when returning from seabed feeding. About 5% of this iron is labile, i.e., potentially available to phytoplankton. Due to their large biomass, frequent benthic feeding, and acidic digestion of particulate iron, krill might facilitate an input of new iron to Southern Ocean surface waters. Deep migrations and foraging at the seabed are significant parts of krill ecology, and the vertical fluxes involved in this behavior are important for the coupling of benthic and pelagic food webs and their elemental repositories
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Developing new levels of edit
No full textIn 1985, the writing and editing group at Los Alamos National Laboratory established four levels of edit for technical reports. When a survey in 1994 showed that both authors and editors felt the levels were not meeting author needs, the authors set about revising them. Their goals were to simplify the editing process, focus editing on improving technical clarity, and ensure that value was added in editing. This paper describes the revision process and product -- three author-based levels of edit
Indico Conference Paper, Slides, Poster Edit
No full textIn this short e-learning video you can walk through the new Paper, Slides, Poster Edit functionality in Indico Conference.
Who and how informs the author of the need to re-edit.
How the author re-submits the edited version.
Luca Ciabini is 2020 volunteer CERN Summer Student, contributing from his home station.
Enjoy!</p
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Developing new levels of edit
No full textSince 1985, Los Alamos National Laboratory (LANL) staff have had four levels of edit to choose from for technical reports. When a CQI survey showed that both authors and editors felt the levels were not meeting author needs, LANL set about revising them. The goals were to simplify the editing process, focus editing on improving technical clarity, and ensure value added in editing. This paper describes the revision process and product--three author-based levels of edit
Játékos módszerek a hittanoktatásban : Innovatív pedagógiai megközelítések és gyakorlati alkalmazásuk
No full textA játékos módszerek alkalmazásának és a pályaelhagyás szándékának összefüggése hittanárok körében : [absztrakt]
No full textBatch Substring Edit Distance
No full textA tool for batch computing substring edit distances between the full texts of novels in order to detect duplicates. See GitHub for further information. See also Author Name and Title Comparer
[[alternative]]The analysis and edit of the curriculum of statics
No full text[[abstract]]Abstract
The main purposes of this study are to analyze and edit the curriculum of statics.The cognitive structure in learning theory were used to analyze structure of the knowledge item in statics,and there for to obtain semantic map of knowledge structure.By which the relation among them can be understood.This relation is used just to edit the curriculum and learning strategy. These results offer an alternative way to edit the curriculum and to improved teaching and learning effective.This study shows close relation between knowledge structure and the curriculum.These results are useful for educational research and practial classroom instructions.
Farming on the Edge in Poland. Options for Improving Farm Incomes for the Main Types of Farms after Joining the EU
No full textThe aim of the paper is to examine the financial impacts of introducing the Common Agricultural Policy into the Polish farming sector after the accession to the EU. Aggregated results from farm level modelling using linear programming for 210 farm types representing the variety of Polish farms, and 90% of the agricultural sector are presented. The benefits of the negotiated subsidy arrangements are unequally distributed and only a partial solution to low farm family incomes.EU accession, Polish Agriculture, direct payments, typical farms, farm model., Farm Management,
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