Search for dissertations about: "semantic models"

Showing result 1 - 5 of 122 swedish dissertations containing the words semantic models.

2. 1. Ensembles of Semantic Spaces : On Combining Models of Distributional Semantics with Applications in Healthcare

   Author : Aron Henriksson; Hercules Dalianis; Martin Duneld; Nigel Collier; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; natural language processing; machine learning; distributional semantics; ensemble learning; semantic space ensembles; medical informatics; electronic health records; Computer and Systems Sciences; data- och systemvetenskap;

   Abstract : Distributional semantics allows models of linguistic meaning to be derived from observations of language use in large amounts of text. By modeling the meaning of words in semantic (vector) space on the basis of co-occurrence information, distributional semantics permits a quantitative interpretation of (relative) word meaning in an unsupervised setting, i. READ MORE

4. 2. Semantic Mapping in Warehouses

   Author : Saeed Gholami Shahbandi; Björn Åstrand; Roland Philippsen; Antanas Verikas; Martin Magnusson; Högskolan i Halmstad; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automation; Robotics; Mapping; Semantic Maps; Warehouse Automation;

   Abstract : This thesis and appended papers present the process of tacking the problem of environment modeling for autonomous agent. More specifically, the focus of the work has been semantic mapping of warehouses. A semantic map for such purpose is expected to be layout-like and support semantics of both open spaces and infrastructure of the environment. READ MORE

5. 3. End-to-End Learning of Deep Structured Models for Semantic Segmentation

   Author : Måns Larsson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Semantic segmentation; deep structured models; supervised learning; convolutional neural networks; conditional random fields;

   Abstract : The task of semantic segmentation aims at understanding an image at a pixel level. This means assigning a label to each pixel of an image, describing the object it is depicting. READ MORE

6. 4. Triangulating Perspectives on Lexical Replacement : From Predictive Statistical Models to Descriptive Color Linguistics

   Author : Susanne Vejdemo; Maria Koptjevskaja-Tamm; Bernhard Wälchli; Majid Asifa; Stockholms universitet; []
   Keywords : HUMANIORA; HUMANITIES; semantics; lexical typology; semantic typology; historical linguistics; historical semantics; lexical replacement; lexical change; rate of lexical replacement; color; regression models; Swedish; English; German; Danish; Norwegian; Icelandic; method triangulation; Linguistics; lingvistik;

   Abstract : The aim of this thesis is to investigate lexical replacement processes from several complementary perspectives. It does so through three studies, each with a different scope and time depth. READ MORE

7. 5. Semantic Spaces of Clinical Text : Leveraging Distributional Semantics for Natural Language Processing of Electronic Health Records

   Author : Aron Henriksson; Hercules Dalianis; Martin Duneld; Jussi Karlgren; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; distributional semantics; random indexing; semantic space; electronic health records; clinical text; synonyms; diagnosis codes; adverse drug reactions; Computer and Systems Sciences; data- och systemvetenskap; IT for health; IT för hälsa; datorlingvistik; Computational Linguistics; datalogi; Computer Science;

   Abstract : The large amounts of clinical data generated by electronic health record systems are an underutilized resource, which, if tapped, has enormous potential to improve health care. Since the majority of this data is in the form of unstructured text, which is challenging to analyze computationally, there is a need for sophisticated clinical language processing methods. READ MORE