| 1. |
- Abdullahi, Asli M., et al.
(author)
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The present and future status of heavy neutral leptons
- 2023
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In: Journal of Physics G. - : Institute of Physics Publishing (IOPP). - 0954-3899 .- 1361-6471. ; 50:2
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Journal article (peer-reviewed)abstract
- The existence of nonzero neutrino masses points to the likely existence of multiple Standard Model neutral fermions. When such states are heavy enough that they cannot be produced in oscillations, they are referred to as heavy neutral leptons (HNLs). In this white paper, we discuss the present experimental status of HNLs including colliders, beta decay, accelerators, as well as astrophysical and cosmological impacts. We discuss the importance of continuing to search for HNLs, and its potential impact on our understanding of key fundamental questions, and additionally we outline the future prospects for next-generation future experiments or upcoming accelerator run scenarios.
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| 2. |
- Aichroth, Patrick, et al.
(author)
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MICO - MEDIA IN CONTEXT
- 2015
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In: 2015 IEEE International Conference on Multimedia & Expo Workshops (ICMEW). - 9781479970797
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Conference paper (peer-reviewed)abstract
- The abundance of digital content requires cost-effective technologies to extract the hidden meaning from media objects. However, current approaches fail to deal with the challenges related to cross-media analysis, metadata publishing, querying and recommendation that are necessary to overcome this challenge. In this paper, we describe the EU project MICO (Media in Context) which aims to provide the necessary technologies based on open-source software (OSS) core components.
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| 3. |
- Alimena, Juliette, et al.
(author)
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Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
- 2020
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In: Journal of Physics G. - : IOP Publishing. - 0954-3899 .- 1361-6471. ; 47:9
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Journal article (peer-reviewed)abstract
- Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at the weak scale. When produced at experiments such as the Large Hadron Collider (LHC) at CERN, these long-lived particles (LLPs) can decay far from the interaction vertex of the primary proton-proton collision. Such LLP signatures are distinct from those of promptly decaying particles that are targeted by the majority of searches for new physics at the LHC, often requiring customized techniques to identify, for example, significantly displaced decay vertices, tracks with atypical properties, and short track segments. Given their non-standard nature, a comprehensive overview of LLP signatures at the LHC is beneficial to ensure that possible avenues of the discovery of new physics are not overlooked. Here we report on the joint work of a community of theorists and experimentalists with the ATLAS, CMS, and LHCb experiments-as well as those working on dedicated experiments such as MoEDAL, milliQan, MATHUSLA, CODEX-b, and FASER-to survey the current state of LLP searches at the LHC, and to chart a path for the development of LLP searches into the future, both in the upcoming Run 3 and at the high-luminosity LHC. The work is organized around the current and future potential capabilities of LHC experiments to generally discover new LLPs, and takes a signature-based approach to surveying classes of models that give rise to LLPs rather than emphasizing any particular theory motivation. We develop a set of simplified models; assess the coverage of current searches; document known, often unexpected backgrounds; explore the capabilities of proposed detector upgrades; provide recommendations for the presentation of search results; and look towards the newest frontiers, namely high-multiplicity 'dark showers', highlighting opportunities for expanding the LHC reach for these signals.
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| 4. |
- Andersson, Eric, et al.
(author)
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Generating semantic graph corpora with graph expansion grammar
- 2023
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In: 13th International Workshop on Non-Classical Models of Automata and Applications (NCMA 2023). - : Open Publishing Association. ; , s. 3-15
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Conference paper (peer-reviewed)abstract
- We introduce LOVELACE, a tool for creating corpora of semantic graphs.The system uses graph expansion grammar as a representational language, thus allowing users to craft a grammar that describes a corpus with desired properties. When given such grammar as input, the system generates a set of output graphs that are well-formed according to the grammar, i.e., a graph bank.The generation process can be controlled via a number of configurable parameters that allow the user to, for example, specify a range of desired output graph sizes.Central use cases are the creation of synthetic data to augment existing corpora, and as a pedagogical tool for teaching formal language theory.
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| 5. |
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| 6. |
- Bensch, Suna, et al.
(author)
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Algorithmic properties of Millstream systems
- 2010
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In: Developments in Language Theory. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642144547 - 9783642144554 ; , s. 54-65
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Conference paper (peer-reviewed)abstract
- Millstream systems have recently been proposed as a formalization of the linguistic idea that natural language should be described as a combination of different modules related by interfaces. In this paper we investigate algorithmic properties of Millstream systems having regular tree grammars as modules and MSO logic as interface logic. We focus on the so-called completion problem: Given trees generated by a subset of the modules, can they be completed into a valid configuration of the Millstream system?
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| 7. |
- Bensch, Suna, et al.
(author)
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Correct readers for the incremental construction of Millstream configurations by graph transformation
- 2012
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Reports (other academic/artistic)abstract
- Millstream systems have been proposed as a non-hierarchical method for modelling natural language. Millstream congurations represent and connect multiple structural aspects of sentences. We present a method by which the Millstream congurations corresponding to a sentence are constructed. The construction is incremental, that is, it proceeds as the sentence is being read and is complete when the end of the sentence is reached. It is based on graph transformations and a lexicon which associates words with rules for the graph transformations.
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| 8. |
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| 9. |
- Bensch, Suna, et al.
(author)
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Grammatical Inference of Graph Transformation Rules
- 2015
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In: Proceedings of the 7th Workshop on Non-Classical Modelsof Automata and Applications (NCMA 2015). - : Austrian Computer Society. ; , s. 73-90
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Conference paper (peer-reviewed)
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| 10. |
- Bensch, Suna, et al.
(author)
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Graph transformation for incremental natural language analysis
- 2014
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In: Theoretical Computer Science. - : Elsevier. - 0304-3975 .- 1879-2294. ; 531, s. 1-25
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Journal article (peer-reviewed)abstract
- Millstream systems have been proposed as a non-hierarchical method for modelling natural language. Millstream configurations represent and connect multiple structural aspects of sentences. We present a method by which the Millstream configurations corresponding to a sentence are constructed. The construction is incremental, that is, it proceeds as the sentence is being read and is complete when the end of the sentence is reached. It is based on graph transformations and a lexicon which associates words with graph transformation rules that implement the incremental construction process.
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