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A Fuzzy Model for Representing Uncertain, Subjective, and Vague Temporal Knowledge in Ontologies [chapter]

Gábor Nagypál, Boris Motik
2003 Lecture Notes in Computer Science  
Hence, existing approaches for temporal modeling based on crisp representation of time cannot be applied to these advanced modeling tasks.  ...  To overcome these difficulties, in this paper we present fuzzy interval-based temporal model capable of representing imprecise temporal knowledge.  ...  We are also examining the different properties of our new fuzzy temporal relations (like transitivity) which work will allow us to make basic inferences even in case of fuzzy intervals (e.g.  ... 
doi:10.1007/978-3-540-39964-3_57 fatcat:a6252m65vrf4lesdl7rhgml2iu

Publishing Uncertainty on the Semantic Web: Blurring the LOD Bubbles [chapter]

Ahmed El Amine Djebri, Andrea G. B. Tettamanzi, Fabien Gandon
2019 Lecture Notes in Computer Science  
We present a new vocabulary and a framework to capture and handle uncertainty in the Semantic Web.  ...  Current standards of the Semantic Web and Linked Data do not support such a representation in a formal way and independently of any theory.  ...  This vocabulary offers to handle fuzzy or inconsistent data and is useful in time-based reasoning. Yet this vocabulary does not provide a formal definition of uncertainty.  ... 
doi:10.1007/978-3-030-23182-8_4 fatcat:hadqqz243zg5zlftlji6kmglsq

Approaches to Uncertain or Imprecise Rules - A Survey [chapter]

Matthias Nickles, Davide Sottara
2009 Lecture Notes in Computer Science  
With this paper we present a brief overview of selected promi nent approaches to rule frameworks and formal rule languages for the representation of and reasoning with uncertain or imprecise knowledge.  ...  This work covers selected probabilistic and possibilistic logics, as well as implementations of uncertainty and possibilistic reasoning in rule engine software.  ...  Probabilistic Approaches Probability Theory Probability theory is the mathematical theory of random events.  ... 
doi:10.1007/978-3-642-04985-9_30 fatcat:i2djoph27fgvvfczv2xapaqxki

Using the Dempster-Shafer Theory of Evidence to Resolve ABox Inconsistencies [chapter]

Andriy Nikolov, Victoria Uren, Enrico Motta, Anne de Roeck
2008 Lecture Notes in Computer Science  
The Dempster-Shafer theory of evidence is a formalism, which allows appropriate interpretation of extractors' confidence values.  ...  Automated ontology population using information extraction algorithms can produce inconsistent knowledge bases.  ...  In the Semantic Web domain the studies on uncertain reasoning are mostly focused on two formalisms: probability theory and fuzzy logic.  ... 
doi:10.1007/978-3-540-89765-1_9 fatcat:5arz3g5yina37lyezqj6zie4iy

Integrating Graded Knowledge And Temporal Change In A Modal Fragment Of Owl

Hans-Ulrich Krieger
2016 Zenodo  
the uncertainty and interpreted through confidence intervals in the model theory.  ...  We complement the model theory by a set of RDFS-/OWL 2 RL-like entailment (if-then) rules, acting on the syntactic representation of modalized statements.  ...  Acknowledgements The research described in this paper has been co-funded by the Horizon 2020 Framework Programme of the European Union within the project PAL  ... 
doi:10.5281/zenodo.269625 fatcat:sreznu6cd5aq5aqeq2qnpkpvs4

Dr 4.2: Multimodal Interaction With Basic Adaptivity And Personalization

Bernd Kiefer, Hans-Ulrich Krieger, Ivana Kruijff-Korbayova, Stefania Racioppa, Franziska Burger, Magdalena Kaiser
2017 Zenodo  
new formalism to prove the feasibility of the approach.  ...  The formalism to implement dialogue strategies that was dened in the rst year has been implemented to a great extend, and the functionality contained in the year 1 prototype has been implemented in the  ...  Collaboration in Cyber-Physical Environments, grant no. 01IW14001).  ... 
doi:10.5281/zenodo.344181 fatcat:akohq4it55gqldsxtgy2u6qehe

Description and reasoning for vague ontologies using logic programming

Mustapha Bourahla
2018 IET Software  
These vagueness descriptions are inputs to vagueness reasoning procedure implemented at meta-level, which is based on extended tableau algorithm.  ...  The Semantic Web ontologies can contain vague axioms, which means the knowledge about them is imprecise and then query answering will not possible due to the open world assumption if the necessary information  ...  The rough sets theory as generalisation of the fuzzy sets theory [8, 9] is another approach to vagueness.  ... 
doi:10.1049/iet-sen.2017.0226 fatcat:jvfmcoeborc6bb5iogldnutoza

D4.1: Natural Multimodal Interaction Baseline

Bernd Kiefe, Hans-Ulrich Krieger, Ivana Kruijff-Korbayov´, Stefania Raccioppa
2016 Zenodo  
We implemented a prototype for the experiments in year 1, which provide us with interaction data that can be used later to develop and evaluate the components in this work package.  ...  We defined a new formalism for the specification of dialogue policies that combines dialogue rules, knowledge representation and dialogue history in a unique way.  ...  Acknowledgments The research presented in this paper has been funded by the Aliz-E project (, grant n° ICT-248116 in FP7/2007-2013, and the PAL project (, grant n° 643783-RIA in Horizon  ... 
doi:10.5281/zenodo.1314339 fatcat:22wqr5bwdvgrjgpwydxc5fzhem

Towards the Representation of Claims in Ontologies for the Digital Humanities

Salvatore Cristofaro, Emilio M. Sanfilippo, Pietro Sichera, Daria Spampinato
2021 International Joint Workshop on Semantic Web and Ontology Design for Cultural Heritage  
Knowledge and data in the human sciences are sometimes expressed in hypothetical or even incompatible terms. One wonders therefore how to make sense of them in ontological modeling frameworks.  ...  Our proposal builds on existing works in the state of the art.  ...  time points within the interval.  ... 
dblp:conf/swodch/CristofaroSSS21 fatcat:g5xjzkvfabhulnaxuiaqtpdgvq

Managing home care with loose goals and policies

Kenneth J. Turner
2014 Journal of Ambient Intelligence and Smart Environments  
However, it is not always possible to rely on exact information for such an approach. Policies should therefore not have to be formulated in terms of precise inputs and outputs.  ...  The paper uses automated home care management as a concrete illustration of how the approach works.  ...  Uncertain Values Probability theory is widely known and needs no introduction. Fuzzy logic (e.g.  ... 
doi:10.3233/ais-140277 fatcat:wab2ma5yezb2pidn6hvp7ayawu

Flexible provisioning of web service workflows

Sebastian Stein, Terry R. Payne, Nicholas R. Jennings
2009 ACM Transactions on Internet Technology  
Using simulation, we then benchmark our algorithm and show that it leads to a 700% improvement in average utility, while successfully completing up to eight times as many workflows as approaches that do  ...  unreliable and uncertain.  ...  Here, a similar pattern as shown in Figure 12 emerges and our flexible approach clearly dominates the other approaches when service success is uncertain (i.e., when the failure probability is greater  ... 
doi:10.1145/1462159.1462161 fatcat:ixqkzk5yrnhsbdivjj2h7gxs6y

Evaluating Data Reliability: An Evidential Answer with Application to a Web-Enabled Data Warehouse

S. Destercke, P. Buche, B. Charnomordic
2013 IEEE Transactions on Knowledge and Data Engineering  
In this paper, we propose a generic method to assess data reliability from a set of criteria using the theory of belief functions. Customizable criteria and insightful decisions are provided.  ...  There are many available methods to integrate information source reliability in an uncertainty representation, but there are only a few works focusing on the problem of evaluating this reliability.  ...  Indeed it encompasses fuzzy sets and probability distributions as particular representations. 1) Evidence theory: We recall the basics of the theory and its links with fuzzy sets.  ... 
doi:10.1109/tkde.2011.179 fatcat:aq7rnj2cl5h5vbrzamnmpoqfja

Grounding the Interaction: Knowledge Management for Interactive Robots

Séverin Lemaignan
2013 Künstliche Intelligenz  
This representation matches situation calculus (or variants like event/fluent calculus) theories and takes explicitly into account the time (either time points or time intervals) and is especially suited  ...  is discussed in the context of situation calculus; open world vs. closed world approaches are mentioned.  ...  started at any time, 2. the ability to check that if we do some task, it won't bring the world in an inconsistent state, 3 . more generally, the ability to predict the state of the world after some task  ... 
doi:10.1007/s13218-013-0246-3 fatcat:lzwey4kmoffqlobfwgzcggev5a

North American owls: biology and natural history

1989 ChoiceReviews  
Thus, tawny owls and domestic cats evidently have comparable nocturnal visual sensitivity, both of which probably approach the absolute limit possible in the vertebrate eye.  ...  At this time the female would usually approach the male, sometimes landing immediately behind him, and possibly begin begging for food.  ...  Surnia: Uncertain, but possibly based on the modern Greek surnion, a vernacular name for Strix aluco. ulula: Latin, "crying out as if in pain."  ... 
doi:10.5860/choice.26-4491 fatcat:5i5faqty2zdf3fm2e6o3vl4wha

North American owls: biology and natural history

2003 ChoiceReviews  
Thus, tawny owls and domestic cats evidently have comparable nocturnal visual sensitivity, both of which probably approach the absolute limit possible in the vertebrate eye.  ...  At this time the female would usually approach the male, sometimes landing immediately behind him, and possibly begin begging for food.  ...  Surnia: Uncertain, but possibly based on the modern Greek surnion, a vernacular name for Strix aluco. ulula: Latin, "crying out as if in pain."  ... 
doi:10.5860/choice.40-4017 fatcat:jrs2vh4dxvepheelev3rrimgxq
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