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OpinioNet: The LiquidPub Reputation Module

                         Nardine Osman, Jordi Sabater, Carles Sierra

        ...
Use Case: Credit Attribution in Liquid Journals

Liquid Journals and the SKO model:


                                    ...
Use Case: Credit Attribution in Liquid Journals

Information sources for computing reputation:
               + activity c...
Use Case: Credit Attribution in Liquid Journals

Transforming obtained information into opinions:


                      ...
Use Case: Credit Attribution in Liquid Journals

Opinions may propagate following the OpinioNet algorithm:


             ...
OpinioNet: calculating the reputation of research



Reliability measure
                         
                      ...
OpinioNet: calculating the reputation of research



Intrinsic opinions:
Opinion calculation - Aggregation of children’s o...
OpinioNet: calculating the reputation of research



Extrinsic opinions:
Opinion calculation - Aggregation of parents’ opi...
OpinioNet: calculating the reputation of research

Aggregating opinions:
Aggregating opinions for all attributes
         ...
A Final Note




What we still need to do for the 2nd year review:
        Implement the author’s reputation mechanism
   ...
Questions?




                          For more information, please visit:
                    http://project.liquidpub....
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General presentation of the LiquidPub project

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Slides about LiquidPub project, presented at the 2nd Snow Workshop
http://wiki.liquidpub.org/mediawiki/index.php/Second_Workshop_on_Scientific_Knowledge_Creation%2C_Dissemination%2C_and_Evaluation

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Transcript of "General presentation of the LiquidPub project"

  1. 1. OpinioNet: The LiquidPub Reputation Module Nardine Osman, Jordi Sabater, Carles Sierra IIIA-CSIC 2nd Workshop on Scientific Knowledge Creation, Dissemination, and Evaluation February 2010 N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 1 / 11
  2. 2. Use Case: Credit Attribution in Liquid Journals Liquid Journals and the SKO model: KEY Liquid Journal Liquid Journal (solid) Issue Liquid Journal Article part of relation (solid) bookmarks relation (liquid/dynamic) ... ... ... ... Note: All nodes (journals, issues, and articles) are viewed as SKOs. N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 2 / 11
  3. 3. Use Case: Credit Attribution in Liquid Journals Information sources for computing reputation: + activity counters (e.g. number of subscriptions) KEY Liquid Journal Liquid Journal (solid) Issue Liquid Journal Article part of relation (solid) bookmarks relation (liquid/dynamic) ... ... ... ... + authors’ h-indexes (default) + activity counters + citations & their author’s h-indexes Note: These are not fixed, we can add more sources as we see fit. N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 3 / 11
  4. 4. Use Case: Credit Attribution in Liquid Journals Transforming obtained information into opinions: KEY Liquid Journal Liquid Journal (solid) Issue Liquid Journal Article part of relation (solid) bookmarks relation (liquid/dynamic) ... opinions ... ... ... Note: Each piece of information may be viewed as an opinion. N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 4 / 11
  5. 5. Use Case: Credit Attribution in Liquid Journals Opinions may propagate following the OpinioNet algorithm: KEY Liquid Journal propagation Liquid Journal (solid) Issue of opinions Liquid Journal Article part of relation (solid) bookmarks relation (liquid/dynamic) ... opinions ... ... ... Note: Propagation direction is different along different relations. N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 5 / 11
  6. 6. OpinioNet: calculating the reputation of research Reliability measure  1   direct(Pt ) ∧ t ≤ t n    0 ¬direct(Pt )∀t ≤ t    n t πn = ∧ ∃ c · (c, n) ∈ E (1)   t    πc otherwise   |{c | (c, n) ∈ E}|    ∀c·(c,n)∈E N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 6 / 11
  7. 7. OpinioNet: calculating the reputation of research Intrinsic opinions: Opinion calculation - Aggregation of children’s opinions 1 Pt = n · π c · Pt t c (2) t πc ∀ c · (c,n)∈E ∀ c · (c,n)∈E Opinion decay Pt = (Ptn − Dtn )ν ∆t + Dtn n n n n (3) N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 7 / 11
  8. 8. OpinioNet: calculating the reputation of research Extrinsic opinions: Opinion calculation - Aggregation of parents’ opinions 1 Dt = n · πp · Pt t p (4) t πp ∀p·(n,p)∈E ∀p·(n,p)∈E Opinion decay Dt = (Dtn − F)ν ∆t + F n n (5) N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 8 / 11
  9. 9. OpinioNet: calculating the reputation of research Aggregating opinions: Aggregating opinions for all attributes X ρ(a) · P(ei |r , n, a, t) ∀ a∈A · P(ei |r ,n,a,t)=F P(ei |r , n, , t) = X (6) ρ(a) ∀ a∈A · P(ei |r ,n,a,t)=F Aggregating opinions for all reviewers X Ω(r , n) · P(ei |r , n, a, t) ∀ r ∈G · P(ei |r ,n,a,t)=F P(ei | , n, a, t) = X (7) Ω(r , n) ∀ r ∈G · P(ei |r ,n,a,t)=F t Calculating a final reputation measure Rn ∈ [0, 1] t 1 X Rn = (2 · υ(ei ) − 1) · P(ei | , n, , t) (8) 2 · |E | e ∈E i N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 9 / 11
  10. 10. A Final Note What we still need to do for the 2nd year review: Implement the author’s reputation mechanism Design & generate Liquid Journal example that OpinioNet will run on Design & implement the presentation of results through a widget Apply OpinioNet to the Liquid Conference use case (?) N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 10 / 11
  11. 11. Questions? For more information, please visit: http://project.liquidpub.org/reputation/ N. Osman, J. Sabater,C. Sierra (IIIA) OpinioNet: LP Reputation Module February 2010 11 / 11
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