Search results for "python"
showing 10 items of 160 documents
Dziļo viltojumu atpazīšana
2020
Bakalaura darbā “Dziļo viltojumu atpazīšana” gan teorētiski, gan praktiski tiek apskatīti dažādi dziļo viltojumu atpazīšanas algoritmi un realizēti 3 dažādi neironu tīkli viltojumu atpazīšanai. Lai arī dziļie viltojumi var būt bāzēti gan uz video, gan audio izmaiņām, šajā darbā fokuss ir tieši uz video izmaiņām. Tāpat tiek sniegts ieskats arī dziļajos viltojumos pēc to būtības –kas tieši tie ir un kā tie tiek izstrādāti.Lai arī ideja par dziļajiem viltojumiem radās jau pagājušā gadsimta beigās, tolaik tehnoloģijas vēl nebija tik attīstītas, lai šī ideja gūtu plašāku publisko interesi un tā tas bija līdz 2017. gadam, kad dziļie viltojumi strauji sāka gūt propularitāti. Kopš tā laika šīs tēma…
Metamodelling architectures for complex data integration in systems biology
2010
Systems biology aims at deciphering the functioning of biological systems on the basis of the knowledge of their molecular components and the relations between such components. To address the issues involved, high-throughput technologies are used. Taking advantage of the standards that are being currently developed to achieve consensual representations of technological domains, we present a metamodelling architecture based on these standards. The proposed architecture organises standard-specific metamodels and models into a single hierarchy. Each metamodel describes a consensus that is shared by several models of applications. A metamodel construct for description of faceted element is prop…
Upper bound on the communication complexity of private information retrieval
1997
We construct a scheme for private information retrieval with k databases and communication complexity O(n 1/(2k−1) ).
Laika rindu analīzes metodes akciju cenu prognozēšanā
2020
Bakalaura darba mērķis izpētīt laika rindu analīzes metožu pielietojuma iespējas akciju cenu analīzē un prognozēšanā, kā arī novērtēt dažāda veida modeļu izmantošanas potenciālu konkrēta uzņēmuma akciju cenu prognozēšanā. Darbā sniegts laika rindu analīzes un prognozēšanas metožu pārskats, laika rindu prognozēšanas problēmu situāciju izpēte. Apskatītās metodes kā ARIMA, ARIMAX, SARIMAX un VAR tika pielietotas uzņēmuma Volkswagen akciju cenu prognozēšanā, izmantojot datus par 2009. – 2019. gadu laika periodu. Lai ņemtu vērā kopējā tirgus tendences, modeļi tika papildināti ar diviem eksogēniem mainīgiem – uzņēmuma Porsche un uzņēmuma BMW akciju cenām par iepriekš minēto periodu. Prognozēšanas…
Suffix array and Lyndon factorization of a text
2014
Abstract The main goal of this paper is to highlight the relationship between the suffix array of a text and its Lyndon factorization. It is proved in [15] that one can obtain the Lyndon factorization of a text from its suffix array. Conversely, here we show a new method for constructing the suffix array of a text that takes advantage of its Lyndon factorization. The surprising consequence of our results is that, in order to construct the suffix array, the local suffixes inside each Lyndon factor can be separately processed, allowing different implementative scenarios, such as online, external and internal memory, or parallel implementations. Based on our results, the algorithm that we prop…
Right-Justified Characterization for Generating Regular Pattern Avoiding Permutations
2017
ECO-method and its corresponding succession rules allow to recursively define and construct combinatorial objects. The induced generating trees can be coded by corresponding pattern avoiding permutations. We refine succession rules by using succession functions in case when avoided patterns are regular or c-regular. Although regular patterns are hard to be recognized in general, we give a characterization for its right-justified property which is a prerequisite in the definition of the regular pattern. Based on this characterization, we show the (c-)regularity for various classes of permutations avoiding sets of patterns with variable lengths. Last, the technique of succession functions per…
A pragmatic study of nonsense, from Lewis Carroll to the Monty Python
2010
This dissertation consists in a study of verbal exchanges in nonsense literature, from the last quarter of the nineteenth century and one of the two fathers of the genre, Lewis Carroll, to the last quarter of the twentieth century and his glorious heirs, the Monty Python. The corpus is taken from the whole of English-speaking nonsense literature, be it English (Lewis Carroll, the Monty Python, N.F. Simpson), Canadian (Stephen Leacock), or American (Robert Benchley, Donald Ogden Stewart, Joseph Heller and the Marx Brothers). As the title indicates, the study of verbal exchanges will rely on pragmatic analysis, pragmatics being the study of how language works as a practice, in social context.…
The nuclear envelope-associated epichromatin and its sheets are composed of DNA A-form packed as nucleosomal superbeads which construct vehicles for …
2019
FINDUS: An Open-Source 3D Printable Liquid-Handling Workstation for Laboratory Automation in Life Sciences
2020
3D-printed laboratory devices can enable ambitious research purposes even at a low-budget level. To follow this trend, here we describe the construction, calibration, and usage of the FINDUS (Fully Integrable Noncommercial Dispensing Utility System). We report the successful 3D printing and assembly of a liquid-handling workstation for less than $400. Using this setup, we achieve reliable and flexible liquid-dispensing automation with relative pipetting errors of less than 0.3%. We show our system is well suited for several showcase applications from both the biology and chemistry fields. In support of the open-source spirit, we make all 3D models, assembly instructions, and source code ava…
Kameras kontroles programmatūra un Chrome spraudnis sistēmas stāvokļa pārraudzībai un kontrolei
2015
Kvalifikācijas darba mērķis ir izstrādāt programmatūru fotoaparāta Sony QX1, vai citu Sony Remote Camera API izmantojošu kameru attālinātai kontrolei bezvadu tīklā, grafisko vidi nodrošinot ar tīmekļa pārlūka Google Chrome spraudni. Šāds risinājums ļautu nodrošināt programmatūras darbību neatkarīgi no lietotāja izvēlētās personālā datora operētājsistēmas. Sistēma izstrādāta, izmantojot tīmekļa tehnoloģijas un programmēšanas valodu Python. Sistēmas lietotāji var attālināti pārraudzīt kameras uzņemšanas parametrus un veikt attēla uzņemšanu.