Sökning: "text compression"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden text compression.

  1. 1. Genericitet i text

    Författare :Yvonne Carlsson; Staffan Hellberg; Kari Fraurud; Östen Dahl; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Genericity; noun phrases; reference; anaphora; Accessibility Theory; Blending Theory; conceptual integration; compression; nordiska språk; Scandinavian Languages;

    Sammanfattning : This dissertation examines genericity from a textual perspective. The material consists of popular science texts about species of animals. The investigation concerns both the distribution of different forms of generic noun phrases and the boundary between generic and non-generic noun phrases. LÄS MER

  3. 2. Structures of String Matching and Data Compression

    Författare :N Jesper Larsson; Institutionen för datavetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Implementation; Burrows-Wheeler Transform; Sliding Window; Suffix Sorting; Text Compression; Algorithms; Suffix Tree; Systems engineering; computer technology; Data- och systemvetenskap;

    Sammanfattning : This doctoral dissertation presents a range of results concerning efficient algorithms and data structures for string processing, including several schemes contributing to sequential data compression. It comprises both theoretic results and practical implementations. LÄS MER

  4. 3. A Universal Source Coding Perspective on PPM

    Författare :Jan Åberg; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coding with side information; multinomial estimation; maximum probability codes; MDL estimation; PPM; hierarchical source coding; universal source coding; text compression; lossless data compression; Automation; robotics; control engineering; Automatiska system; robotteknik; reglerteknik;

    Sammanfattning : The PPM (Prediction by Partial Matching) family of text compression algorithms has several members that have shown to be very efficient in practice. This thesis treats PPM algorithms from an information-theoretical point of view, based on results and methods from universal source coding theory. LÄS MER

  5. 4. A novel approach to text classification

    Författare :Niklas Zechner; Johanna Björklund; Efstathios Stamatatos; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Text classification; natural language processing; automata; Computer Science; datalogi;

    Sammanfattning : This thesis explores the foundations of text classification, using both empirical and deductive methods, with a focus on author identification and syntactic methods. We strive for a thorough theoretical understanding of what affects the effectiveness of classification in general. LÄS MER

  7. 5. Towards conversational speech synthesis : Experiments with data quality, prosody modification, and non-verbal signals

    Författare :Bajibabu Bollepalli; Joakim Gustafsson; Jonas Beskow; Matthew Aylett; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Speech synthesis; MPEG compression; Voice Conversion; Artificial Neural Net- works; Laughter synthesis; HTS; Computer Science; Datalogi;

    Sammanfattning : The aim of a text-to-speech synthesis (TTS) system is to generate a human-like speech waveform from a given input text. Current TTS sys- tems have already reached a high degree of intelligibility, and they can be readily used to read aloud a given text. For many applications, e.g. LÄS MER