'Too Much Serendipity': The Tension between Information Seeking and Encountering at the Library Shelves

The physical library shelves are regularly the site of serendipitous information discoveries, and are often sought out for this purpose. However, while some drawbacks to the shelves as information gateways have been documented, none to our knowledge relate to their capacity for facilitating serendipity. We present findings from a qualitative study of serendipity at the library shelves. This study uncovered a new drawback that we term the "seeking-encountering tension". On one hand, this tension entices people towards the relatively high-risk, high-reward activity of exploring new information avenues discovered serendipitously and, on the other, draws them back towards the relative safety of goal-directed information-seeking. We discuss some of the factors that contribute to this tension, and provide design suggestions for mitigating it. Understanding this tension can inform the design of physical and digital information environments that provide users the agency to switch between more and less focused information-seeking at will

A Dictionary- and Corpus-Independent Statistical Lemmatizer for Information Retrieval in Low Resource Languages

TestitiivistelmäThe original publication is available at www.springerlink.com

Nonequilibrium Transport through a Kondo Dot in a Magnetic Field: Perturbation Theory

Using nonequilibrium perturbation theory, we investigate the nonlinear transport through a quantum dot in the Kondo regime in the presence of a magnetic field. We calculate the leading logarithmic corrections to the local magnetization and the differential conductance, which are characteristic of the Kondo effect out of equilibrium. By solving a quantum Boltzmann equation, we determine the nonequilibrium magnetization on the dot and show that the application of both a finite bias voltage and a magnetic field induces a novel structure of logarithmic corrections not present in equilibrium. These corrections lead to more pronounced features in the conductance, and their form calls for a modification of the perturbative renormalization group.Comment: 16 pages, 7 figure

A Classification of IR Effectiveness Metrics

Effectiveness is a primary concern in the information retrieval (IR) field. Various metrics for IR effectiveness have been proposed in the past; we take into account all the 44 metrics we are aware of, classifying them into a two-dimensional grid. The classification is based on the notions of relevance, i.e., if (or how much) a document is relevant, and retrieval, i.e., if (how much) a document is retrieved. To our knowledge, no similar classification has been proposed so far

Philosophical conceptions of information

“The original publication is available at www.springerlink.com” Copyright Springer'I love information upon all subjects that come in my way, and especially upon those that are most important.' Thus boldly declares Euphranor, one of the defenders of Christian faith in Berkley’s Alciphron (Berkeley, (1732), Dialogue 1, Section 5, Paragraph 6/10). Evidently, information has been an object of philosophical desire for some time, well before the computer revolution, Internet or the dot.com pandemonium (see for example Dunn (2001) and Adams (2003)). Yet what does Euphranor love, exactly? What is information? The question has received many answers in different fields. Unsurprisingly, several surveys do not even converge on a single, unified definition of information (see for example Braman 1989, Losee (1997), Machlup and Mansfield (1983), Debons and Cameron (1975), Larson and Debons (1983)).Peer reviewe