Báo cáo khoa học: "Bootstrapping Statistical Parsers from Small Datasets" pptx

... parses from the target domain are used. 1 Introduction In this paper we describe how co-training (Blum and Mitchell, 1998) can be used to boot- strap a pair of statistical parsers from a small amount ... experiments be- tween statistical parsers, it was necessary to choose two parsers that generate comparable out- put but use different statistical models. We there- fore chose...

Ngày tải lên: 31/03/2014, 20:20

... Dempster, N. M. Laird, and D. B. Rubin. 1977. Maximum likelihood from incomplete data via the EM algorithms. Journal of the Royal Statistical So- ciety. Series B (Methodological), 39(1):1–38. P. ... verbalize it as “wind from west”, and therefore these ex- pressions will be assigned to different semantic clusters. However, it is important to note that the phrase “wind from west” may s...

Ngày tải lên: 07/03/2014, 22:20

... comparative question identification and compa- rator mining from questions. However, their me- thods typically can achieve high precision but suffer from low recall (Jindal and Liu, 2006b) (J&L). ... However, our task is different from theirs in that it requires not only extracting entities (comparator extraction) but also ensuring that the entities are extracted from compara...

Ngày tải lên: 23/03/2014, 16:20

... from corpora. The EX approach aims to construct a large and up-to- date transliteration lexicon from live corpora. Towards this objective, some have proposed extracting translation pairs from ... extraction of transliteration pairs (EX) from corpora. The TM approach models phoneme-based or grapheme-based mapping rules using a generative model that is trained from a large bi...

Ngày tải lên: 31/03/2014, 01:20

... create a statistical language model (SLM) directly from our interpretation grammar and compare recognition per- formance of this model against a speech recognition grammar compiled from the same ... our general corpora to produce three different models: GSLCLM from the GSLC corpus, NewsLM from the newspaper corpus and DomNewsLM from the domain adapted newspaper Corpus. 3.1 Interpo...

Ngày tải lên: 22/02/2014, 02:20

... rules from seed exam- ples Extraction rules are construed as transformations from the event patterns derived from text onto a formal representation of an event. The initial rules are derived from ... of events from text, irrespective of their form of description, a property essential for successful adaptability to new domains and text genres. The major challenge in advancing...

Ngày tải lên: 31/03/2014, 20:20

... the binding pocket and 7.75 A ˚ from the T1 copper atom (Fig. 5D). Fig. 1. Sequence alignment of McoP with CotA laccase from Bacillus subtilis (1GSK) and CueO from Escherichia coli (1KV7). The ... metallo-oxidase from Aquifex aeolicus. Biochim Biophys Acta 1794, 75–83. 5 Fernandes AT, Soares CM, Pereira MM, Huber R, Grass G & Martins LO (2007) A robust metallo-oxidase from the h...

Ngày tải lên: 18/02/2014, 04:20

... manage- ment from the user and present an intuitive, user-friendly interface from which this necessary metadata can be obtained. The kineticswizard can be launched auto- matically from the instrument ... web services. Kinetic data can be exported from SABIO-RK in SBML format and experimen- tal data exported from MeMo-RK in SBRML format. N. Swainston et al. Enzyme kinetics: from in...

Ngày tải lên: 18/02/2014, 04:20

... enzymes operate near saturation and the kinase readily dissociates from the phosphorylated target (and, likewise, the phosphatase from the unphosphory- lated target), a steep threshold response, ... machinery involving multiply phosphorylated proteins allows DNA replication to start simultaneously from multiple origins of replication [20,107–110]. We have shown recently in a model of re...

Ngày tải lên: 18/02/2014, 08:20

... reverse transcription, PCR and real-time PCR mRNA was extracted from cells and tissue (obtained with local ethical permission from the Masaryk Institute ethics committee) using the Qiagen RNeasy ... After the extraction, RT-PCR was performed using the Omniscript RT kit from Qiagen (Valencia, CA, USA) and pfu polymerase from Stratagene, following the manufacturer’s suggested protocols....

Ngày tải lên: 18/02/2014, 17:20