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Reasoning about knowledge of unawareness

Joseph Y. Halpern, Leandro C. Rêgo
2009 Games and Economic Behavior  
agent knows he is unaware of.  ...  However, standard propositional logics for knowledge and awareness cannot express the fact that an agent knows that there are facts of which he is unaware without there being an explicit fact that the  ...  A logic for reasoning about knowledge of unawareness To allow reasoning about knowledge of unawareness, we extend the language L K,X,A n (Φ) by adding a countable set of propositional variables X = {x,  ... 
doi:10.1016/j.geb.2009.02.001 fatcat:i7kdaj3d3fgvxnhwqgkll5d3gm

Reasoning About Knowledge of Unawareness [article]

Joseph Y. halpern, Leandro Chaves Rego
2006 arXiv   pre-print
We propose a logic for reasoning about knowledge of unawareness, by extending Fagin and Halpern's Logic of General Awareness.  ...  agent knows he is unaware of.  ...  A logic for reasoning about knowledge of unawareness To allow reasoning about knowledge of unawareness, we extend the language L K,X,A n (Φ) by adding a countable set of propositional variables X = {x,  ... 
arXiv:cs/0603020v1 fatcat:dstqwbmmgrb23phzy54hmsv3fe

Reasoning about knowledge of unawareness revisited

Joseph Y. Halpern, Leandro C. Rêgo
2013 Mathematical Social Sciences  
This makes it possible to express the fact that an agent knows that there are some facts of which he is unaware.  ...  In that logic, it is not possible to model an agent who is uncertain about whether he is aware of all formulas.  ...  Thus, for the class of structures of most interest, we are able to get all the properties of the HMS approach; moreover, we can accommodate reasoning about knowledge of unawareness.  ... 
doi:10.1016/j.mathsocsci.2012.08.003 fatcat:vx5hocmvpjdozgyzyahfwlcefy

Reasoning about knowledge of unawareness revisited

Joseph Y. Halpern, Leandro C. Rêgo
2014 Mathematical Social Sciences  
This makes it possible to express the fact that an agent knows that there are some facts of which he is unaware.  ...  In that logic, it is not possible to model an agent who is uncertain about whether he is aware of all formulas.  ...  Thus, for the class of structures of most interest, we are able to get all the properties of the HMS approach; moreover, we can accommodate reasoning about knowledge of unawareness.  ... 
doi:10.1016/j.mathsocsci.2014.04.005 fatcat:5ri2i62p7rccvnbuznfeveblym

Reasoning about knowledge of unawareness revisited

Joseph Y. Halpern, Leandro C. Rêgo
2009 Proceedings of the 11th Conference on Theoretical Aspects of Rationality and Knowledge - TARK '09  
This makes it possible to express the fact that an agent knows that there are some facts of which he is unaware.  ...  In that logic, it is not possible to model an agent who is uncertain about whether he is aware of all formulas.  ...  Thus, for the class of structures of most interest, we are able to get all the properties of the HMS approach; moreover, we can accommodate reasoning about knowledge of unawareness.  ... 
doi:10.1145/1562814.1562838 dblp:conf/tark/HalpernR09 fatcat:ewqp54ku2rgt7hp45xmqf7frs4

Reasoning About Knowledge of Unawareness Revisited [article]

Joseph Y. Halpern, Leandro Rego
2009 arXiv   pre-print
This makes it possible to express the fact that an agent knows that there are some facts of which he is unaware.  ...  In that logic, it is not possible to model an agent who is uncertain about whether he is aware of all formulas.  ...  Thus, for the class of structures of most interest, we are able to get all the properties of the HMS approach; moreover, we can extend to allow for reasoning about knowledge of unawareness.  ... 
arXiv:0906.4321v1 fatcat:mddkv2y6hjdmvfjudiqhttxbgq

A Logic for Reasoning About Knowledge of Unawareness

Thomas Ågotnes, Natasha Alechina
2014 Journal of Logic, Language and Information  
In this paper we introduce a decidable logic which can be used to reason about certain types of unawareness.  ...  In the most popular logics combining knowledge and awareness, it is not possible to express statements about knowledge of unawareness such as "Ann knows that Bill is aware of something Ann is not aware  ...  In general, we need the latter type of quantification to reason about unawareness of formulae.  ... 
doi:10.1007/s10849-014-9201-4 fatcat:3inmglzdj5aovjkvfj3tqxcnue

The persuasiveness puzzle about bootstrapping

Guido Melchior
2020 Ratio  
However, when being initially unaware of a source and its reliability, as in the case of forming beliefs about our sense apparatus, bootstrapping can be eventually persuasive.  ...  This paper aims at resolving a puzzle about the persuasiveness of bootstrapping. On the one hand, bootstrapping is not a persuasive method of settling questions about the reliability of a source.  ...  are reliable via bootstrapping reasoning when we are initially unaware of our sense apparati.  ... 
doi:10.1111/rati.12253 pmid:32103840 pmcid:PMC7027492 fatcat:qh7oa7vjszdbldq4sjghvgimvq

Analysis of reasons for noncompliance with laser treatment in patients of diabetic retinopathy

Wen Hua, Sijia Cao, Jing Cui, David Maberley, Joanne Matsubara
2013 Canadian journal of ophthalmology  
These results were likely related to the lack of knowledge about the potential consequences of DR, the underlying principle of laser treatment, and panretinal photocoagulation procedures.  ...  A standardized questionnaire was given to the 2 types of defaulters to collect information about the reasons for noncompliance.  ...  Unawareness of the necessity for treatment reflected the lack of knowledge about the potential consequences of DR in defaulters, and a previous report showed that this knowledge was critically important  ... 
doi:10.1016/j.jcjo.2012.09.012 pmid:23561600 pmcid:PMC3947385 fatcat:5zazl6vnkffbfcpbsuzkvntqoy

Unawareness of Theorems

Spyros Galanis
2011 Social Science Research Network  
A new property called Awareness Leads to Knowledge shows that unawareness of theorems not only constrains an agent's knowledge, but also, can impair his reasoning about what other agents know.  ...  This paper provides a set-theoretic model of knowledge and unawareness.  ...  The third feature of unawareness is that it constrains an agent's ability to reason about the knowledge of others.  ... 
doi:10.2139/ssrn.3185075 fatcat:52l72dxwjjev7a3ljmbnr4sz7i

Unawareness of theorems

Spyros Galanis
2011 Economic Theory  
A new property called Awareness Leads to Knowledge shows that unawareness of theorems not only constrains an agent's knowledge, but also, can impair his reasoning about what other agents know.  ...  This paper provides a set-theoretic model of knowledge and unawareness.  ...  The third feature of unawareness is that it constrains an agent's ability to reason about the knowledge of others.  ... 
doi:10.1007/s00199-011-0683-x fatcat:jc42robjhbbspl4snzwr235hoa

Knowledge and Attitude of Travellers Regarding Yellow Fever Vaccination

Pramil Tiwari, Rajiv Ahlawat, Gaurav Gupta
2017 Indian Journal of Pharmacy Practice  
The most common reason for travelling abroad was a business trip (46%). Half of the travellers did not know about duration of protection from yellow fever vaccine.  ...  A large number of Indians travel to yellow fever endemic countries for job opportunities. However, till date, little is known about their knowledge and attitude about yellow fever vaccine.  ...  ACKNOWLEDGEMENT The authors acknowledge the co-operation and understanding of the participants of the study. CONFLICT OF INTEREST None  ... 
doi:10.5530/ijopp.10.2.26 fatcat:4rkpipst65fghfmppczhy5ttj4

Coverage Of Tetanus Toxoid And Rubella Vaccination Among Female Students Of Qamc And Iub, Bahawalpur

Sobia Kanwal Sadia Kanwal
2018 Zenodo  
Conclusion: About two-third of the female students we [...]  ...  The reasons for not being vaccinated were fear (16%), unawareness (68%), bad experience (4%), don't think its useful (8%), others (4%).  ...  , poor knowledge about place and time to get vaccinated and lack of awareness about the importance of vaccination.  ... 
doi:10.5281/zenodo.1243147 fatcat:2kadcluxmzbptdj6wlfsdc24by

The • of Awareness

Jan Koenderink
2016 Perception  
structures for modeling reasoning about knowledge of unawareness.  ...  While an outsider may be able to reason about the implicit knowledge of an agent, it is hard to see how the agent herself could reason about her implicit knowledge that is not explicit knowledge as well  ... 
doi:10.1177/0301006616655916 pmid:27358323 fatcat:rzs5mvpsazauxmwytzdb6k6mmi

A Study on Knowledge, Awareness, and Medication Adherence in Patients with Hypertension from a Tertiary Care Centre from Northern Sri Lanka

S. Pirasath, T. Kumanan, M. Guruparan
2017 International Journal of Hypertension  
The knowledge about hypertension among majority of patients was reasonable. But they were unaware of their disease status. The drug compliance among them was poor.  ...  Results. 73 of 303 patients were males. 69.9% of patients had adequate knowledge about hypertension. 40.5% of patients were unaware of their disease status. 75.8% of patients could not recall their blood  ...  Conflicts of Interest The authors declare that there are no conflicts of interest regarding the publication of this paper.  ... 
doi:10.1155/2017/9656450 pmid:29230325 pmcid:PMC5688346 fatcat:ewos3446zbghfnk4sdsjk6fbhy
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