The strange case of reproducibility versus representativeness in contextual suggestion test collections

The most common approach to measuring the effectiveness of Information Retrieval systems is by using test collections. The Contextual Suggestion (CS) TREC track provides an evaluation framework for systems that recommend items to users given their geographical context. The specific nature of this track allows the participating teams to identify...

Projectcampus grading and review

This report describes, analyzes and evaluates the process around the design of the grading and review module and its development for the online learning environment Projectcampus. The module was developed as a bachelor’s project. This project is the last part of the bachelor phase of the computer science study of the Delft University of...

Een draadloze sensor voor het monitoren van bederfelijke producten: Draadloze communicatie ontwerp

In deze bachelorthesis wordt een ontwerp gepresenteerd van draadloze communicatie voor een draadloos sensorsysteem voor het automatisch meten van pH en temperatuur. Het is gelukt een volledig passieve RFID tag te selecteren en deze te integreren in een PCB ontwerp met de andere onderdelen van het sensorsysteem. Op basis van een proof of concept...

Increasing cheat robustness of crowdsourcing tasks

Crowdsourcing successfully strives to become a widely used means of collecting large-scale scientific corpora. Many research fields, including Information Retrieval, rely on this novel way of data acquisition. However, it seems to be undermined by a significant share of workers that are primarily interested in producing quick generic answers...

Deliverance

Dit rapport is het eindverslag van het vak IN3405 Bachelor Project, dat deel uit maakt van de bachelor opleiding Technische Informatica aan de Technische Universiteit Delft. Dit project is uitgevoerd bij het Internationaal Instituut voor Sociale Geschiedenis (IISG), te Amsterdam.

Reliability and effectiveness of clickthrough data for automatic image annotation

Automatic image annotation using supervised learning is performed by concept classifiers trained on labelled example images. This work proposes the use of clickthrough data collected from search logs as a source for the automatic generation of concept training data, thus avoiding the expensive manual annotation effort. We investigate and...

Communication in Goal Oriented Agents

In this thesis the agent programming language GOAL is extended with communication. For GOAL we pur- sue an implementation that has a well-founded theory as well as providing pragmatic programming constructs for the programmer. Existing technologies are reviewed to explore their approaches. Many of these technolo- gies have Speech-act theory as...

Eye Movements Disclose Decisions in Set

During the past several decades, much research has been done in the field of visual attention and cognitive processing, i.e., how does the human brain process visual stimuli. We show that the card game SET is a good candidate for investigating the relation between top-down versus bottom-up visual information processing. Further, we show that...

Statistical Approach in Power Cables Diagnostic Data Analysis

On-site Testing and PD Diagnosis of High Voltage Power Cables

In addition to after-laying of new-installed high voltage (HV) power cables the use of on-site non-destructive on-site testing and diagnosis of service aged power cables is becoming an important issue to determine the actual condition of the cable systems and to determine the future performances. In this paper based on field experience an...

Probabilistic relevance ranking for collaborative filtering

Collaborative filtering is concerned with making recommendations about items to users. Most formulations of the problem are specifically designed for predicting user ratings, assuming past data of explicit user ratings is available. However, in practice we may only have implicit evidence of user preference; and furthermore, a better view of the...

A property of algebraic univoque numbers

Consider the set U of real numbers q >= 1 for which only one sequence (c(i)) of integers 0 <= c(i) <= q satisfies the equality Sigma(infinity)(i= 1) ciq(-i) =1. We show that the set of algebraic numbers in U is dense in the closure (U) over bar of U.

Personalization on a peer-to-peer television system

We introduce personalization on Tribler, a peer-to-peer (P2P) television system. Personalization allows users to browse programs much more efficiently according to their taste. It also enables to build social networks that can improve the performance of current P2P systems considerably, by increasing content availability, trust and the...

Insulation Diagnosis of High Voltage Power Cables

Deep dry etching process development for photonic crystals in InPbased planar waveguides

Chlorine-based inductively coupled plasma etching processes are investigated for the purpose of etching twodimensional photonic crystals in InP-based materials. Etch rates up to 3.7 µm/min and selectivity’s to the SiN mask up to 19 are reported. For the removal of indiumchloride etch products both the application of elevated temperatures and...

On the asymptotic behavior of discrete event systems

Propagation of transient acoustic waves in porous media