Search results for "tiedonhaku"
showing 10 items of 43 documents
Sixth graders’ evaluation strategies when reading Internet search results : an eye-tracking study
2018
Eye-tracking technology was used to examine Internet search result evaluation strategies adopted by sixth-grade students (N = 36) during ten experimental information search tasks. The relevancy of the search result’s title, URL, and snippet components was manipulated and selection of search results as well as looking into probabilities on the search result components was analysed. The results revealed that during first-pass inspection, students read the search engine page by first looking at the title of a search result. If the title was relevant, the probability of looking at the snippet of the search result increased. During second-pass inspection, there was a high probability of students…
Behavior-based personalization in web search
2016
Personalized search approaches tailor search results to users' current interests, so as to help improve the likelihood of a user finding relevant documents for their query. Previous work on personalized search focuses on using the content of the user's query and of the documents clicked to model the user's preference. In this paper we focus on a different type of signal: We investigate the use of behavioral information for the purpose of search personalization. That is, we consider clicks and dwell time for reranking an initially retrieved list of documents. In particular, we (i) investigate the impact of distributions of users and queries on document reranking; (ii) estimate the relevance …
Online reading as an individual and social practice
2012
Näkökulmia tutkivan nettilukemisen opettamiseen
2019
Tutkiva nettilukeminen on ongelmalähtöistä, tavoitteellista lukemista, jossa lukija etsii internetistä tietoa asettamiinsa kysymyksiin, arvioi löytämänsä informaation luotettavuutta, laatii synteesin useiden nettitekstien pohjalta ja kertoo oppimastaan muille (Leu, Kinzer, Coiro, Castek & Henry, 2013). Tutkiva nettilukeminen ei ole siten vain netissä surffailua tai yksittäisten faktojen tarkistamista vaan tavoitteellista, oppimiseen tähtäävää toimintaa. Tutkivalle nettilukemiselle on ominaista pitkäjänteisyys, asiaan paneutuminen ja netistä löydetyn informaation soveltaminen. Tutkiva nettilukeminen edellyttää yleensä monilukutaitoisuutta, koska internet on monipuolinen tekstiympäristö. Luuk…
Designing Classroom Practices for Teaching Online Inquiry : Experiences from the Field
2021
Students face several challenges when asked to locate relevant and credible information from the internet. This article introduces three principles for designing online inquiry lessons and documents what we learned from five language arts teachers from Finland who implemented and provided feedback on a learning unit framed in those design principles. Teachers implemented a researcher-designed online inquiry unit in nine upper secondary school classrooms. The unit included four 75-minute lessons sequenced to support the location, evaluation, and synthesis of information students encountered in an online inquiry task. Teachers’ diaries revealed their impressions of the unit, problems encounte…
Interest-based topology management in unstructured peer-to-peer networks
2012
Learning to Rank Images for Complex Queries in Concept-based Search
2018
Concept-based image search is an emerging search paradigm that utilizes a set of concepts as intermediate semantic descriptors of images to bridge the semantic gap. Typically, a user query is rather complex and cannot be well described using a single concept. However, it is less effective to tackle such complex queries by simply aggregating the individual search results for the constituent concepts. In this paper, we propose to introduce the learning to rank techniques to concept-based image search for complex queries. With freely available social tagged images, we first build concept detectors by jointly leveraging the heterogeneous visual features. Then, to formulate the image relevance, …
Googlen trendit asuntomarkkinoiden indikaattorina
2016
Tämä tutkimus selvittää, voidaanko Google-hakuaineistoa hyödyntää suomalaisten kerrostaloasuntojen hintojen ja niiden kauppalukumäärän indikaattorina. Monet tekijät viittaavat siihen, että suomalaisten Googlessa tekemillä verkkohauilla kyettäisiin selittämään muutoksia asuntomarkkinoilla. Suomessa lähes koko väestö käyttää internetiä säännöllisesti, Google on maan ylivoimaisesti käytetyin hakupalvelin ja lisäksi asuntomarkkinoiden palvelut ovat muuttuneet lähes kokonaan internetissä tarjottaviksi verkkopalveluiksi. Tutkimuksessa asuntomarkkinoita kuvaamaan muodostetaan kaksi eri Google-indeksiä, joista ensimmäinen indeksi pyrkii kuvaamaan yleisellä tasolla asuntoihin kohdistuvia hakuja ja t…
Measuring Distraction at the Levels of Tactical and Strategic Control: The Limits of Capacity-Based Measures for Revealing Unsafe Visual Sampling Mod…
2011
The control theory of driving suggests that driver distraction can be analyzed as a breakdown of control at three levels. Common approach for analyzing distraction experimentally is to utilize capacity-based measures to assess distraction at the level of operational control. Three driving simulation experiments with 61 participants were organized to evaluate which kind of measures could be used to analyze drivers' tactical visual sampling models and the related effects of distraction while searching textual information on in-car display. The effects of two different text types were evaluated. The utilized capacity-based measures seemed to be insufficient for revealing participants' tactical…