| 1. |
- Danylenko, Antonina, 1986-, et al.
(författare)
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Decisions : Algebra and Implementation
- 2011
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Ingår i: Machine Learning and Data Mining in Pattern Recognition. - Berlin, Heidelberg : Springer. - 9783642231988 - 9783642231995 ; , s. 31-45
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Bokkapitel (refereegranskat)abstract
- This paper presents a generalized theory for capturing and manipulating classification information. We define decision algebra which models decision-based classifiers as higher order decision functions abstracting from implementations using decision trees (or similar), decision rules, and decision tables. As a proof of the decision algebra concept we compare decision trees with decision graphs, yet another instantiation of the proposed theoretical framework, which implement the decision algebra operations efficiently and capture classification information in a non-redundant way. Compared to classical decision tree implementations, decision graphs gain learning and classification speed up to 20% without accuracy loss and reduce memory consumption by 44%. This is confirmed by experiments.
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| 2. |
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| 3. |
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| 4. |
- Laitinen, Mikko, 1973-, et al.
(författare)
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ELF, language change and social networks : Evidence from real-time social media data
- 2020
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Ingår i: Language Change. - Cambridge : Cambridge University Press. - 9781108729819 ; , s. 179-204
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Bokkapitel (refereegranskat)abstract
- This article extends ELF studies towards variationist and computational sociolinguistics. It uses social network theory to explore how ELF is embedded in the social structures in which it is used and explores the size and nature of social networks in ELF. The empirical part investigates if multilingual and often mobile ELF users have larger networks and more weak ties than others, and if they therefore could be more likely to act as innovators or early adopters of change than the other speaker groups. Our empirical material consists of real-time social media data from Twitter. The results show that, statistically speaking, social embedding of ELF creates conditions that favor change. ELF users have larger networks and more weak ties than the other groups examined here. With regard to methods, social embedding needs to be taken into account in future studies, and we illustrate that variationist and computational sociolinguistics offers a useful theoretical and methodological toolbox for this task.
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| 5. |
- Laitinen, Mikko, 1973-, et al.
(författare)
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Revisiting weak ties : Using present-day social media data in variationist studies
- 2017
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Ingår i: Exploring Future Paths for Historical Sociolinguistics. - Amsterdam : John Benjamins Publishing Company. - 9789027200860 ; , s. 303-325
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Bokkapitel (refereegranskat)abstract
- This article makes use of big and rich present-day data to revisit the social network model in sociolinguistics. This model predicts that mobile individuals with ties outside a home community and subsequent loose-knit networks tend to promote the diffusion of linguistic innovations. The model has been applied to a range of small ethnographic networks. We use a database of nearly 200,000 informants who send micro-blog messages in Twitter. We operationalize networks using two ratio variables; one of them is a truly weak tie and the other one a slightly stronger one. The results show that there is a straightforward increase of innovative behavior in the truly weak tie network, but the data indicate that innovations also spread under conditions of stronger networks, given that the network size is large enough. On the methodological level, our approach opens up new horizons in using big and often freely available data in sociolinguistics, both past and present.
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| 6. |
- Larsson, Jörgen, et al.
(författare)
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Work-time reduction for sustainable lifestyles
- 2019
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Ingår i: Routledge Handbook of Global Sustainability Governance, Edited By Agni Kalfagianni, Doris Fuchs, Anders Hayden. - Other titles: Global sustainability governance Description: New York : Routledge, 2020. : Routledge. - 9781138048287 ; , s. 334-347
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Bokkapitel (refereegranskat)
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| 7. |
- Lundberg, Jonas, 1964-, et al.
(författare)
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SSA-Based Simulated Execution
- 2012
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Ingår i: Patterns, Programming and Everything. - London : Springer. - 9781447123491 - 9781447123507 ; , s. 75-90
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Bokkapitel (refereegranskat)abstract
- Most scalable approaches to inter-procedural dataflow analysis do not take into account the order in which fields are accessed, and methods are executed, at run-time. That is, they have no inter-procedural flow-sensitivity. In this chapter we present an approach to dataflow analysis named \emph{Simulated Execution}. It is flow-sensitive in the sense that a memory accessing operation (call or field access) will never be affected by another memory access that is executed there after in all runs of a program. This makes Simulated Execution strictly more precise than the most frequently used flow-insensitive approaches. We also outline a proof of correctness using abstract interpretation. Finally, although we present Simulated Execution as a dataflow algorithm applied to context-insensitive Points-to Analysis, it can be applied on any inter-procedural dataflow problem and in a context-sensitive manner.
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| 8. |
- Lundberg, Mattias, 1976-, et al.
(författare)
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Framing Lutheran Music Culture
- 2021
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Ingår i: Lutheran Music Culture. - Berlin : Walter de Gruyter. ; , s. 1-20
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Bokkapitel (refereegranskat)
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| 9. |
- Lundberg, Mattias, 1976-, et al.
(författare)
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Förord
- 2024
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Ingår i: Kyrkosångsförbundet 100 år. - Skellefteå : Artos & Norma. ; , s. 7-12
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Bokkapitel (refereegranskat)
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