Quantitative Prediction of Twitter Message Dissemination: A Machine Learning Approach

Predicting the popularity of contents in social networks is quite important for several applications such as viral marketing, news propagation and personalization. In this work, we developed an statistical learning approach to predict the popularity of tweets in the twitter social network. We extracted several user-based, tweet-based and network...

Face Recognition System

In this thesis a research about a face recognition system is presented. The system uses a database of images to identify individuals. The starting point is a huge database of “known faces”, the FERET database. If a new face is presented the system has to decide whether this face is a member of the database or not. The matching of a face can be...

The Unified Anatomical Human: Model-based Visualization of Heterogeneous Anatomy Data

In the course of anatomical research, anatomists acquire and attempt to organize a great deal of heterogeneous data from different sources, such as MRI and CT data, cryosections, immunohistochemistry, manual and automatic segmentations of various structures, related literature, the relations between all of these items, and so forth. Anatomical...

Enhanced Question Classification with Optimal Combination of Features

An important component of question answering systems is question classification. The task of question classification is to predict the entity type of the answer of a natural language question. Question classification is typically done using machine learning techniques. Different lexical, syntactical and semantic features can be extracted from a...

An empirical comparison of various representations of Dynamic Systems

There exist several formalisms for representation and reasoning in dynamic systems, for example, Dynamic Influence Diagrams (DID), Influence Diagrams (ID), Dynamic Bayesian Networks (DBN), Bayesian Networks (BN), Hidden Markov Models (HMM), Markov Decision Processes (MDP), and Partially Observable Markov Decision Processes (POMDP). All these...

Efficient approximate leave-one-out cross-validation for ridge and lasso

In this thesis an approximation method is discussed that provides similar results to leave-one-out cross-validation but is less time-consuming. By means of this approximation method, estimating the optimal values of ridge and lasso parameters will take less time and carrying out (an approximated version of) double LOOCV will become practically...

Automated metabolic network reconstruction by exploiting functional homology

As the metabolic network reconstruction process via manual curation proves to be a tedious process, the need for an automated reconstruction tool becomes imminent. There has been previous attempts to automate metabolic network reconstruction. These existing approaches rely on sequence similarity to infer functions. Consequently, they fail to...

Plagiarism detection by similarity join

Since the internet is so big and most of its content is public, it is very hard to find out where the information came from originally. There are many websites that publish news articles, so people and organizations can easily lose track of where their articles are reused with or without their permission. This paper presents a plagiarism...

EASY Usage Statistics

Het instituut DANS heeft als grootste doel het opslaan en beschikbaar stellen van onderzoeksgegevens. Sinds januari 2005 hebben zij een programma genaamd EASY in gebruik waarin dit soort gegevens als dataset worden opgeslagen en weer opgevraagd kunnen worden. Gebruikers kunnen zich voor deze service registreren en kunnen dan zelf hun eigen werk...

The non-verbal emotional dictionary NED

A human face is an extremely important source of information during human communication. We learn to recognize facial expressions long before we learn to communicate verbally. Facial expressions are the most effective way to communicate our emotions. For years most researchers centred their attention in the automatic recognition of facial...

Een iPhone-webapplicatie voor Greetinq Voicemail

Ter afsluiting van de bachelor TI is in het bachelorproject een iPhone-webapplicatie ontworpen voor Greetinq Voicemail.

The iCat as a natural interaction partner:Play Go Fish with a robot.

Rationale Currently, there is an increasing demand for research concerning robots which can interact in a social and natural way with humans. Presently, there is still a gap in knowledge about how socio-cognitive robots with the ability to show intentional behavior can be developed. Research Question The goal of this research is to develop a...

Secure Data Storage Outsourcing with Conjunctive Keyword Search

This thesis in the field of cryptography considers secure data storage outsourcing with keyword search capabilities. To ensure data confidentiality the data is stored in encrypted format. An efficient solution has been developed to enable conjunctive keyword search. Also, a protocol is applied to enable efficient and secure sharing of encrypted...

Multimodal Interface for DNA Alignment of Sequences

Major research efforts in Bioinformatics include sequence alignment, gene finding, genome assembly, protein structure alignment, protein structure prediction, prediction of gene expression and protein-protein interactions, and the modeling of evolution. To perform these specific tasks different tools are used. Using these tools separately is a...