PODS and ICDT Alan Fekete (University of Sydney) with Assistance from Leonid Libkin and Wim Martens

The database theory conferences: PODS and ICDT Alan Fekete (University of Sydney) with assistance from Leonid Libkin and Wim Martens

Summary This account, presented to CORE’s 2020 conference ranking review, shows the high quality of these conferences focused on theory of data management. PODS and ICDT are the central locations for a community with very high standards, containing many esteemed and impactful researchers. While absolute number of papers and also citation counts are typically lower for theory work than other styles of computer science, the importance of the work, the quality of the work, and the calibre of the community, should justify keeping the current high rankings for these conferences: A* for PODS and A for ICDT, matching the ranking of the larger conferences with which each is collocated.

Overview For about 50 years, there has been an active community of researchers looking at issues of data management. After an early period, in which theory and systems aspects were both in focus, the community has been subdivided into systems- and applications-oriented conferences such as SIGMOD, VLDB, ICDE and EDBT that are dominated by systems-building work in the engineering tradition, along with applications of database technologies to new types of data and queries, and conferences looking at foundational issues such as PODS and ICDT. The latter typically publish papers more mathematical in character, and use techniques from many areas such as logic and algorithm design. PODS started in 1982 and ICDT in 1986. From 1991, SIGMOD and PODS combined for a joint ACM SIGMOD/PODS event, the main one on the annual database calendar. Colocation means multiple shared events such as keynotes, poster sessions, and social events; however, PODS technical sessions with contributed papers run separately. From 2009, EDBT and ICDT followed the SIGMOD/PODS scheme, collocating the two conferences. While being held jointly with larger systems conferences, the theory conferences have separate program committees, so that PODS and ICDT programs are selected based on the specialist expertise to judge and value theory work appropriately. For each conference, there is an executive committee or council that persists (with regular turnover), to choose the program chairs each year. See https://sigmod.org/pods-home/pods- organization/ (though this is several months out of date, as Leonid Libkin has joined as Chair of the Executive and Floris Geerts has stepped off) and https://databasetheory.org/ICDT/what-is-icdt

Quality of the review and selection process Each conference is small and selective, running with single-track presentations, and ensuring each paper has at least 3 reviews from non-conflicted members of the PC (or invited experts, for cases of papers whose topic is not within the expertise of enough members of the PC). In 2019 PODS accepted 29 full papers from 87 submissions. ICDT 2019 accepted 21 from 67 submissions.

Extended versions of the conferences’ top papers are published in leading journals. PODS has a standing arrangement with Journal of the ACM and ACM Transactions on Database Systems (TODS) that highest ranked papers from PODS are invited for publication in these journals (typically 2 in JACM and 2-3 in TODS). ICDT has a similar arrangement with 1-2 papers invited to TODS; also until 2019 3-4 each year were invited to Springer’s Theory of Computing Systems (from 2020, the open-access journal Logical Methods in Computer Science is replacing the Springer journal in this role).

Quality and impact of the work The Research Highlight awards from SIGMOD (the ACM SIG, not the conference it runs) seek for the best 5 to 10 papers per year in database research (and which therefore primarily target SIGMOD, VLDB, PODS, ICDE, ICDT, and EDBT, but also call for community nominations) have regularly gone to PODS and ICDT papers. In the last five years, 7 out of 35 research highlight awards have gone to PODS, and 3 to ICDT papers.

Foundational work done in these conferences had a significant influence on the practice of databases as evidenced by awarding the main database research award (ACM SIGMOD Edgar Codd Innovation Award) to leaders of the PODS/ICDT community such as Abiteboul, Fagin, and Vardi.

Specific examples of impact from excellent work in PODS and ICDT include • differential privacy, where the seminal paper by Dwork et al describes it as “We continue a line of research initiated in [10,11]" where [10] is “Revealing information while preserving privacy” by Dirur and Nissim, from PODS2003 • relationalAI and LogicBlox are shipping platforms for reasoning that are founded on efficient join processing algorithms driven by complexity results; key papers are “Worst-case optimal join algorithms” (PODS 2012), “Leapfrog Triejoin” (ICDT 2014), and “Beyond worst-case analysis for joins with minesweeper” (PODS 2014) • Standards for query languages for graph databases have been directly influenced by theory work. SPARQL 1.1's change of definition of property paths (regular expressions to navigate through RDF graphs) was based on "The complexity of evaluating path expressions in SPARQL" (PODS 2012). The new ISO effort to standardize and integrated GQL is being influenced by “Querying graph databases with XPath” (ICDT 2013) and “Regular Queries on Graph Databases” (ICDT 2015), as shown in https://www.gqlstandards.org/existing-languages

Quality of the community The table below contains the members of the current PODS Executive Committee and ICDT Council, together with program chairs for both conferences since 2009.

Name Esteem Institution Google Scholar Conference h-index roles Leonid Libkin ACM Fellow; U Edinburgh 56 PODS Executive member of Chair Academia Europaea Dan Suciu ACM Fellow U Washington 86 PODS Executive Jan Van den Hasselt U 36 PODS Executive Bussche Tova Milo ACM Fellow; Tel Aviv U 53 PODS Weizmann Executive; ICDT Prize; member PC Chair (2011) of Academia Europaea Marcelo Arenas Associate Editor Pontificia 47 PODS of ACM TODS Universidad Executive; Católica de PODS PC Chair Chile (2018); ICDT PC Chair (2015) Christoph Koch member of EPFL 47 PODS Academia Executive; Europaea PODS PC Chair (2019) Yufei Tao ACM Chinese 68 PODS PC Chair Distinguished University of (2020) Member (will Hong Kong be announced as ACM Fellow in 2020 round) Floris Geerts U Antwerp 36 PODS PC Chair (2017) Wang-Chiew ACM Fellow Megagon Labs 42 PODS PC Chair Tan (2016) Diego ACM Fellow Free University 72 PODS PC Chair Calvanese of Bozen- (2015) Bolzano Martin Grohe ACM Fellow Aachen 49 PODS PC Chair University (2014) Wenfei Fan ACM Fellow; Edinburgh U 56 PODS PC Chair member of (2013) Academia Europaea Michael Oxford U 37 PODS PC Chair Benedikt (2012); ICDT PC Chair (2017) Thomas member of TU Dortmund 43 PODS PC Chair Schwentick Academia (2011) Europaea Dirk Van Gucht Indiana U 35 PODS PC Chair (2010) Jianwen Su UC Santa 50 PODS PC Chair Barbara (2009) Wim Martens Associate Editor U Bayreuth 29 ICDT Council of ACM TODS Chair; ICDT PC Chair (2016) Pablo Barceló Pontificia 26 ICDT Council; Universidad ICDT PC Chair Católica de (2019) Chile Angela Bonifati Associate Editor Lyon 1 30 ICDT Council of ACM TODS University Benny Kimelfeld Technion 27 ICDT Council; ICDT PC Chair (2018) Carsten Lutz U Bremen 57 ICDT Council; ICDT PC Chair (2020) Norman Paton member of U Manchester 58 ICDT Council Academia Europaea Ke Yi Associate Editor HKUST 42 ICDT Council of ACM TODS Nicole Humbolt U 21 ICDT PC Chair Schweikardt (2014) Alin Deutsch UC San Diego 39 ICDT PC Chair (2012) Luc Segoufin ENS Ulm, INRIA (no profile), ICDT PC Chair approx. 35 (2010) determined manually Ron Fagin ACM Fellow; IBM Almaden 75 ICDT PC Chair IEEE Fellow; (2009) IBM Fellow; Godel Prize

Where they publish The list of people above was processed with CORE’s where-people-publish tool. The top 20 results follow, for each of conferences and journals (for some reason, the tool failed to find Jan Van den Bussche, despite the name being copied-pasted from his DBLP entry!). This clearly shows the community centres its work in PODS and ICDT, as well as the journal ACM TODS (which deals with both systems and theory, and also publishes extended versions of best papers from both conferences), although a significant number also publish in the leading systems- and application-centred database conferences such as SIGMOD, VLDB (listed as a journal PVLDB) and ICDE, while some are active in the leading AI conferences like AAAI and IJCAI, and others in strong theory forums such as JACM and LICS.

Conferences that published the following experts: Benny Kimelfeld, Alin Deutsch, Tova Milo, Christoph Koch 0001, Dirk Van Gucht, Diego Calvanese, Norman W. Paton, Ke Yi 0001, Luc Segoufin, Pablo Barceló, Yufei Tao, Jianwen Su, Michael Benedikt, Leonid Libkin, Ronald Fagin, Marcelo Arenas, Martin Grohe, Floris Geerts, Nicole Schweikardt, Wang Chiew Tan, Angela Bonifati, Dan Suciu, Carsten Lutz, Wim Martens, Thomas Schwentick, Wenfei Fan

Ranking order is first by number of the above people publishing in the venue, then by number of their publications, then by number of years with at least one publication from these people.

1. ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems (PODS) ______

This conference was published at 76 times by 22 of 27 experts in the last 5 years.

The experts that publish at this conference are: Benny Kimelfeld(14), Martin Grohe(4), Tova Milo(2), Christoph Koch 0001(2), Dirk Van Gucht(3), Ke Yi 0001(4), Luc Segoufin(3), Yufei Tao(6), Jianwen Su(1), Michael Benedikt(4), Leonid Libkin(7), Ronald Fagin(2), Marcelo Arenas(4), Alin Deutsch(1), Floris Geerts(2), Nicole Schweikardt(5), Pablo Barceló(6), Dan Suciu(8), Carsten Lutz(2), Wim Martens(5), Thomas Schwentick(2), Wenfei Fan(3)

In 2015, there were 13 publications by 11 experts: Pablo Barceló, Dan Suciu, Benny Kimelfeld, Ronald Fagin, Tova Milo, Dirk Van Gucht, Wim Martens, Yufei Tao, Floris Geerts, Thomas Schwentick, Wenfei Fan In 2016, there were 12 publications by 12 experts: Pablo Barceló, Dan Suciu, Leonid Libkin, Ronald Fagin, Alin Deutsch, Christoph Koch 0001, Ke Yi 0001, Marcelo Arenas, Wim Martens, Yufei Tao, Floris Geerts, Wenfei Fan In 2017, there were 15 publications by 10 experts: Michael Benedikt, Benny Kimelfeld, Leonid Libkin, Tova Milo, Ke Yi 0001, Carsten Lutz, Dan Suciu, Nicole Schweikardt, Wenfei Fan, Yufei Tao In 2018, there were 12 publications by 9 experts: Luc Segoufin, Wim Martens, Michael Benedikt, Yufei Tao, Nicole Schweikardt, Benny Kimelfeld, Leonid Libkin, Martin Grohe, Pablo Barceló In 2019, there were 9 publications by 8 experts: Ke Yi 0001, Dirk Van Gucht, Marcelo Arenas, Wim Martens, Pablo Barceló, Benny Kimelfeld, Jianwen Su, Martin Grohe In 2020, there were 15 publications by 13 experts: Pablo Barceló, Dan Suciu, Benny Kimelfeld, Leonid Libkin, Dirk Van Gucht, Martin Grohe, Ke Yi 0001, Luc Segoufin, Marcelo Arenas, Carsten Lutz, Michael Benedikt, Christoph Koch 0001, Nicole Schweikardt

22 out of the 27 experts published at this conference in 1 or more years 19 out of the 27 experts published at this conference in 2 or more years 13 out of the 27 experts published at this conference in 3 or more years 7 out of the 27 experts published at this conference in 4 or more years 2 out of the 27 experts published at this conference in 5 or more years

2. International Conference on Database Theory (ICDT) ______

This conference was published at 52 times by 18 of 27 experts in the last 5 years.

The experts that publish at this conference are: Pablo Barceló(4), Dan Suciu(4), Benny Kimelfeld(7), Leonid Libkin(2), Ronald Fagin(3), Martin Grohe(1), Christoph Koch 0001(1), Tova Milo(4), Ke Yi 0001(2), Luc Segoufin(1), Diego Calvanese(2), Carsten Lutz(3), Wim Martens(4), Yufei Tao(4), Floris Geerts(4), Nicole Schweikardt(4), Thomas Schwentick(5), Wang Chiew Tan(2)

In 2015, there were 10 publications by 11 experts: Pablo Barceló, Dan Suciu, Leonid Libkin, Ronald Fagin, Tova Milo, Carsten Lutz, Wim Martens, Yufei Tao, Nicole Schweikardt, Thomas Schwentick, Wang Chiew Tan In 2016, there were 7 publications by 7 experts: Tova Milo, Diego Calvanese, Yufei Tao, Floris Geerts, Dan Suciu, Benny Kimelfeld, Thomas Schwentick In 2017, there were 9 publications by 9 experts: Tova Milo, Luc Segoufin, Carsten Lutz, Pablo Barceló, Nicole Schweikardt, Thomas Schwentick, Wang Chiew Tan, Ronald Fagin, Benny Kimelfeld In 2018, there were 9 publications by 8 experts: Ke Yi 0001, Diego Calvanese, Carsten Lutz, Wim Martens, Yufei Tao, Floris Geerts, Nicole Schweikardt, Pablo Barceló In 2019, there were 6 publications by 6 experts: Floris Geerts, Dan Suciu, Thomas Schwentick, Leonid Libkin, Benny Kimelfeld, Ronald Fagin In 2020, there were 11 publications by 10 experts: Ke Yi 0001, Yufei Tao, Wim Martens, Christoph Koch 0001, Floris Geerts, Dan Suciu, Benny Kimelfeld, Pablo Barceló, Thomas Schwentick, Martin Grohe

18 out of the 27 experts published at this conference in 1 or more years 15 out of the 27 experts published at this conference in 2 or more years 11 out of the 27 experts published at this conference in 3 or more years 6 out of the 27 experts published at this conference in 4 or more years 1 out of the 27 experts published at this conference in 5 or more years

3. International Conference on Management of Data (SIGMOD) ______

This conference was published at 77 times by 16 of 27 experts in the last 5 years.

The experts that publish at this conference are: Wim Martens(1), Ke Yi 0001(6), Dan Suciu(15), Benny Kimelfeld(3), Leonid Libkin(2), Alin Deutsch(3), Pablo Barceló(2), Tova Milo(11), Christoph Koch 0001(7), Marcelo Arenas(1), Angela Bonifati(4), Yufei Tao(8), Floris Geerts(1), Wenfei Fan(12), Wang Chiew Tan(1), Norman W. Paton(4)

In 2015, there were 13 publications by 7 experts: Tova Milo, Christoph Koch 0001, Ke Yi 0001, Dan Suciu, Benny Kimelfeld, Yufei Tao, Wang Chiew Tan In 2016, there were 11 publications by 5 experts: Tova Milo, Ke Yi 0001, Yufei Tao, Christoph Koch 0001, Wenfei Fan In 2017, there were 13 publications by 8 experts: Christoph Koch 0001, Leonid Libkin, Angela Bonifati, Yufei Tao, Dan Suciu, Wenfei Fan, Norman W. Paton, Ke Yi 0001 In 2018, there were 15 publications by 10 experts: Tova Milo, Ke Yi 0001, Marcelo Arenas, Leonid Libkin, Pablo Barceló, Dan Suciu, Yufei Tao, Benny Kimelfeld, Wenfei Fan, Norman W. Paton In 2019, there were 8 publications by 6 experts: Angela Bonifati, Yufei Tao, Floris Geerts, Dan Suciu, Pablo Barceló, Alin Deutsch In 2020, there were 17 publications by 7 experts: Tova Milo, Wim Martens, Angela Bonifati, Dan Suciu, Wenfei Fan, Norman W. Paton, Alin Deutsch

16 out of the 27 experts published at this conference in 1 or more years 12 out of the 27 experts published at this conference in 2 or more years 8 out of the 27 experts published at this conference in 3 or more years 5 out of the 27 experts published at this conference in 4 or more years 2 out of the 27 experts published at this conference in 5 or more years

4. Alberto Mendelzon Workshop on Foundations of Data Management (AMW) ______

This conference was published at 23 times by 9 of 27 experts in the last 5 years.

The experts that publish at this conference are: Marcelo Arenas(3), Pablo Barceló(4), Benny Kimelfeld(6), Leonid Libkin(3), Christoph Koch 0001(1), Diego Calvanese(4), Carsten Lutz(1), Nicole Schweikardt(1), Wang Chiew Tan(1)

In 2015, there were 7 publications by 5 experts: Marcelo Arenas, Pablo Barceló, Diego Calvanese, Benny Kimelfeld, Wang Chiew Tan In 2016, there were 6 publications by 5 experts: Nicole Schweikardt, Benny Kimelfeld, Diego Calvanese, Marcelo Arenas, Pablo Barceló In 2017, there were 5 publications by 5 experts: Diego Calvanese, Benny Kimelfeld, Leonid Libkin, Marcelo Arenas, Pablo Barceló In 2018, there were 4 publications by 4 experts: Diego Calvanese, Leonid Libkin, Carsten Lutz, Pablo Barceló In 2019, there were 1 publications by 1 experts: Christoph Koch 0001

9 out of the 27 experts published at this conference in 1 or more years 5 out of the 27 experts published at this conference in 2 or more years 4 out of the 27 experts published at this conference in 3 or more years 2 out of the 27 experts published at this conference in 4 or more years

5. International Conference on Extending Database Technology (EDBT) ______

This conference was published at 26 times by 8 of 27 experts in the last 5 years.

The experts that publish at this conference are: Angela Bonifati(7), Dan Suciu(1), Benny Kimelfeld(2), Leonid Libkin(1), Tova Milo(8), Ke Yi 0001(1), Diego Calvanese(1), Norman W. Paton(6)

In 2015, there were 7 publications by 5 experts: Tova Milo, Diego Calvanese, Angela Bonifati, Dan Suciu, Norman W. Paton In 2016, there were 2 publications by 3 experts: Tova Milo, Leonid Libkin, Norman W. Paton In 2017, there were 5 publications by 3 experts: Benny Kimelfeld, Norman W. Paton, Angela Bonifati In 2018, there were 3 publications by 3 experts: Tova Milo, Benny Kimelfeld, Angela Bonifati In 2019, there were 6 publications by 3 experts: Tova Milo, Ke Yi 0001, Norman W. Paton In 2020, there were 3 publications by 2 experts: Tova Milo, Norman W. Paton

8 out of the 27 experts published at this conference in 1 or more years 4 out of the 27 experts published at this conference in 2 or more years 3 out of the 27 experts published at this conference in 3 or more years 2 out of the 27 experts published at this conference in 5 or more years

6. Logic in Computer Science (LICS) ______

This conference was published at 21 times by 8 of 27 experts in the last 5 years.

The experts that publish at this conference are: Pablo Barceló(2), Michael Benedikt(6), Leonid Libkin(1), Martin Grohe(6), Dirk Van Gucht(1), Marcelo Arenas(1), Carsten Lutz(2), Nicole Schweikardt(3)

In 2015, there were 4 publications by 2 experts: Michael Benedikt, Leonid Libkin In 2016, there were 4 publications by 3 experts: Michael Benedikt, Martin Grohe, Nicole Schweikardt In 2017, there were 7 publications by 6 experts: Dirk Van Gucht, Nicole Schweikardt, Pablo Barceló, Michael Benedikt, Marcelo Arenas, Martin Grohe In 2018, there were 2 publications by 2 experts: Carsten Lutz, Martin Grohe In 2019, there were 3 publications by 4 experts: Nicole Schweikardt, Carsten Lutz, Martin Grohe, Pablo Barceló In 2020, there were 1 publications by 1 experts: Martin Grohe

8 out of the 27 experts published at this conference in 1 or more years 5 out of the 27 experts published at this conference in 2 or more years 3 out of the 27 experts published at this conference in 3 or more years 1 out of the 27 experts published at this conference in 5 or more years

7. IEEE International Conference on Data Engineering (ICDE) ______

This conference was published at 18 times by 8 of 27 experts in the last 5 years.

The experts that publish at this conference are: Angela Bonifati(2), Alin Deutsch(1), Tova Milo(10), Christoph Koch 0001(1), Floris Geerts(1), Ke Yi 0001(1), Wenfei Fan(2), Norman W. Paton(1)

In 2015, there were 4 publications by 3 experts: Tova Milo, Ke Yi 0001, Wenfei Fan In 2016, there were 2 publications by 2 experts: Christoph Koch 0001, Alin Deutsch In 2017, there were 3 publications by 3 experts: Floris Geerts, Tova Milo, Angela Bonifati In 2018, there were 3 publications by 3 experts: Tova Milo, Wenfei Fan, Angela Bonifati In 2019, there were 3 publications by 1 experts: Tova Milo In 2020, there were 3 publications by 2 experts: Tova Milo, Norman W. Paton

8 out of the 27 experts published at this conference in 1 or more years 3 out of the 27 experts published at this conference in 2 or more years 1 out of the 27 experts published at this conference in 5 or more years

8. International Joint Conference on Artificial Intelligence (IJCAI) ______

This conference was published at 35 times by 7 of 27 experts in the last 5 years.

The experts that publish at this conference are: Pablo Barceló(1), Michael Benedikt(5), Benny Kimelfeld(1), Leonid Libkin(5), Marcelo Arenas(2), Carsten Lutz(14), Diego Calvanese(8)

In 2015, there were 10 publications by 5 experts: Michael Benedikt, Marcelo Arenas, Diego Calvanese, Carsten Lutz, Leonid Libkin In 2016, there were 7 publications by 4 experts: Michael Benedikt, Marcelo Arenas, Diego Calvanese, Carsten Lutz In 2017, there were 4 publications by 3 experts: Michael Benedikt, Leonid Libkin, Carsten Lutz In 2018, there were 6 publications by 5 experts: Diego Calvanese, Carsten Lutz, Pablo Barceló, Benny Kimelfeld, Leonid Libkin In 2019, there were 6 publications by 4 experts: Michael Benedikt, Diego Calvanese, Carsten Lutz, Leonid Libkin In 2020, there were 2 publications by 2 experts: Diego Calvanese, Carsten Lutz

7 out of the 27 experts published at this conference in 1 or more years 5 out of the 27 experts published at this conference in 2 or more years 4 out of the 27 experts published at this conference in 4 or more years 2 out of the 27 experts published at this conference in 5 or more years 1 out of the 27 experts published at this conference in 6 or more years

9. International Colloquium on Automata, Languages and Programming (ICALP) ______

This conference was published at 15 times by 7 of 27 experts in the last 5 years.

The experts that publish at this conference are: Pablo Barceló(2), Michael Benedikt(2), Martin Grohe(6), Carsten Lutz(1), Dan Suciu(1), Nicole Schweikardt(1), Thomas Schwentick(2)

In 2015, there were 2 publications by 2 experts: Thomas Schwentick, Martin Grohe In 2016, there were 1 publications by 1 experts: Martin Grohe In 2017, there were 3 publications by 3 experts: Michael Benedikt, Thomas Schwentick, Carsten Lutz In 2018, there were 3 publications by 2 experts: Nicole Schweikardt, Martin Grohe In 2019, there were 4 publications by 2 experts: Martin Grohe, Pablo Barceló In 2020, there were 2 publications by 2 experts: Michael Benedikt, Dan Suciu

7 out of the 27 experts published at this conference in 1 or more years 3 out of the 27 experts published at this conference in 2 or more years 1 out of the 27 experts published at this conference in 4 or more years

10. AAAI Conference on Artificial Intelligence (AAAI) ______

This conference was published at 10 times by 6 of 27 experts in the last 5 years.

The experts that publish at this conference are: Michael Benedikt(2), Benny Kimelfeld(3), Martin Grohe(1), Diego Calvanese(2), Carsten Lutz(1), Dan Suciu(1)

In 2015, there were 1 publications by 1 experts: Diego Calvanese In 2016, there were 2 publications by 2 experts: Dan Suciu, Diego Calvanese In 2017, there were 1 publications by 1 experts: Michael Benedikt In 2018, there were 2 publications by 2 experts: Michael Benedikt, Benny Kimelfeld In 2019, there were 3 publications by 2 experts: Benny Kimelfeld, Martin Grohe In 2020, there were 1 publications by 1 experts: Carsten Lutz

6 out of the 27 experts published at this conference in 1 or more years 3 out of the 27 experts published at this conference in 2 or more years

11. International Conference on Information and Knowledge Management (CIKM) ______

This conference was published at 13 times by 5 of 27 experts in the last 5 years.

The experts that publish at this conference are: Tova Milo(8), Benny Kimelfeld(1), Diego Calvanese(2), Norman W. Paton(1), Wim Martens(1)

In 2015, there were 2 publications by 2 experts: Tova Milo, Wim Martens In 2017, there were 1 publications by 1 experts: Tova Milo In 2018, there were 5 publications by 3 experts: Tova Milo, Diego Calvanese, Norman W. Paton In 2019, there were 5 publications by 2 experts: Tova Milo, Benny Kimelfeld

5 out of the 27 experts published at this conference in 1 or more years 1 out of the 27 experts published at this conference in 4 or more years

12. International Semantic Web Conference (ISWC) ______

This conference was published at 9 times by 5 of 27 experts in the last 5 years.

The experts that publish at this conference are: Angela Bonifati(1), Marcelo Arenas(1), Diego Calvanese(5), Norman W. Paton(1), Carsten Lutz(1)

In 2015, there were 1 publications by 1 experts: Diego Calvanese In 2016, there were 4 publications by 3 experts: Diego Calvanese, Marcelo Arenas, Norman W. Paton In 2017, there were 2 publications by 2 experts: Diego Calvanese, Carsten Lutz In 2018, there were 2 publications by 2 experts: Diego Calvanese, Angela Bonifati

5 out of the 27 experts published at this conference in 1 or more years 1 out of the 27 experts published at this conference in 4 or more years

13. International Conference on Principles of Knowledge Representation and Reasoning (KR) ______

This conference was published at 9 times by 5 of 27 experts in the last 5 years.

The experts that publish at this conference are: Diego Calvanese(2), Marcelo Arenas(1), Leonid Libkin(3), Carsten Lutz(2), Pablo Barceló(1)

In 2016, there were 5 publications by 4 experts: Diego Calvanese, Carsten Lutz, Leonid Libkin, Pablo Barceló In 2018, there were 4 publications by 3 experts: Marcelo Arenas, Leonid Libkin, Carsten Lutz

5 out of the 27 experts published at this conference in 1 or more years 2 out of the 27 experts published at this conference in 2 or more years

14. International Workshop on Description Logics (DLog) ______

This conference was published at 23 times by 4 of 27 experts in the last 5 years.

The experts that publish at this conference are: Dan Suciu(1), Diego Calvanese(7), Carsten Lutz(14), Pablo Barceló(2)

In 2015, there were 5 publications by 2 experts: Diego Calvanese, Carsten Lutz In 2016, there were 8 publications by 3 experts: Dan Suciu, Diego Calvanese, Carsten Lutz In 2017, there were 3 publications by 1 experts: Carsten Lutz In 2018, there were 3 publications by 2 experts: Diego Calvanese, Carsten Lutz In 2019, there were 4 publications by 2 experts: Carsten Lutz, Pablo Barceló

4 out of the 27 experts published at this conference in 1 or more years 2 out of the 27 experts published at this conference in 3 or more years 1 out of the 27 experts published at this conference in 5 or more years

15. Festschrifts: Birthday, In Memory of ... ______

This conference was published at 7 times by 4 of 27 experts in the last 5 years.

The experts that publish at this conference are: Luc Segoufin(1), Diego Calvanese(3), Carsten Lutz(2), Martin Grohe(1)

In 2015, there were 3 publications by 3 experts: Luc Segoufin, Carsten Lutz, Martin Grohe In 2019, there were 4 publications by 2 experts: Diego Calvanese, Carsten Lutz

4 out of the 27 experts published at this conference in 1 or more years 1 out of the 27 experts published at this conference in 2 or more years

16. Sistemi Evoluti per Basi di Dati (SEBD) ______

This conference was published at 6 times by 4 of 27 experts in the last 5 years.

The experts that publish at this conference are: Tova Milo(1), Diego Calvanese(3), Alin Deutsch(1), Leonid Libkin(1)

In 2015, there were 4 publications by 3 experts: Diego Calvanese, Alin Deutsch, Leonid Libkin In 2017, there were 1 publications by 1 experts: Tova Milo In 2018, there were 1 publications by 1 experts: Diego Calvanese

4 out of the 27 experts published at this conference in 1 or more years 1 out of the 27 experts published at this conference in 2 or more years

17. Symposium on Theoretical Aspects of Computer Science (STACS) ______

This conference was published at 4 times by 4 of 27 experts in the last 5 years.

The experts that publish at this conference are: Marcelo Arenas(1), Carsten Lutz(1), Martin Grohe(1), Wim Martens(1)

In 2016, there were 1 publications by 1 experts: Carsten Lutz In 2020, there were 3 publications by 3 experts: Marcelo Arenas, Wim Martens, Martin Grohe

4 out of the 27 experts published at this conference in 1 or more years

18. IEEE International Conference on Big Data (BigData) ______

This conference was published at 3 times by 4 of 27 experts in the last 5 years.

The experts that publish at this conference are: Diego Calvanese(1), Norman W. Paton(1), Alin Deutsch(1), Leonid Libkin(1)

In 2016, there were 2 publications by 2 experts: Diego Calvanese, Alin Deutsch In 2017, there were 1 publications by 2 experts: Leonid Libkin, Norman W. Paton

4 out of the 27 experts published at this conference in 1 or more years

19. The Web Conference (WWW) ______

This conference was published at 6 times by 3 of 27 experts in the last 5 years.

The experts that publish at this conference are: Marcelo Arenas(1), Wim Martens(4), Angela Bonifati(3)

In 2015, there were 1 publications by 1 experts: Wim Martens In 2016, there were 1 publications by 1 experts: Marcelo Arenas In 2018, there were 3 publications by 2 experts: Wim Martens, Angela Bonifati In 2019, there were 1 publications by 2 experts: Wim Martens, Angela Bonifati

3 out of the 27 experts published at this conference in 1 or more years 2 out of the 27 experts published at this conference in 2 or more years 1 out of the 27 experts published at this conference in 3 or more years

20. Conference on Innovative Data Systems Research (CIDR) ______

This conference was published at 6 times by 3 of 27 experts in the last 5 years.

The experts that publish at this conference are: Tova Milo(3), Dan Suciu(2), Alin Deutsch(1)

In 2015, there were 2 publications by 2 experts: Tova Milo, Alin Deutsch In 2017, there were 2 publications by 2 experts: Tova Milo, Dan Suciu In 2020, there were 2 publications by 2 experts: Tova Milo, Dan Suciu

Journals that published the following experts: Benny Kimelfeld, Alin Deutsch, Tova Milo, Christoph Koch 0001, Dirk Van Gucht, Diego Calvanese, Norman W. Paton, Ke Yi 0001, Luc Segoufin, Pablo Barceló, Yufei Tao, Jianwen Su, Michael Benedikt, Leonid Libkin, Ronald Fagin, Marcelo Arenas, Martin Grohe, Floris Geerts, Nicole Schweikardt, Angela Bonifati, Dan Suciu, Carsten Lutz, Wim Martens, Thomas Schwentick, Wenfei Fan

Ranking order is first by number of the above people publishing in the venue, then by number of their publications

1. CoRR (corr) ______

This journal was published at 231 times by 24 of 25 experts in the last 5 years.

The experts that publish at this journal are: Benny Kimelfeld(29), Alin Deutsch(4), Tova Milo(4), Christoph Koch 0001(11), Dirk Van Gucht(2), Diego Calvanese(20), Norman W. Paton(2), Ke Yi 0001(5), Luc Segoufin(7), Yufei Tao(1), Jianwen Su(2), Michael Benedikt(15), Leonid Libkin(4), Ronald Fagin(2), Marcelo Arenas(7), Martin Grohe(33), Floris Geerts(5), Nicole Schweikardt(11), Pablo Barceló(17), Dan Suciu(28), Angela Bonifati(12), Carsten Lutz(18), Wim Martens(9), Thomas Schwentick(10)

2. SIGMOD Rec. (sigmod) ______

This journal was published at 28 times by 19 of 25 experts in the last 5 years.

The experts that publish at this journal are: Jianwen Su(1), Michael Benedikt(1), Pablo Barceló(2), Floris Geerts(1), Dan Suciu(4), Benny Kimelfeld(5), Leonid Libkin(4), Ronald Fagin(1), Christoph Koch 0001(1), Tova Milo(2), Ke Yi 0001(3), Luc Segoufin(1), Marcelo Arenas(1), Wim Martens(5), Yufei Tao(2), Diego Calvanese(1), Thomas Schwentick(2), Wenfei Fan(2), Angela Bonifati(2)

3. ACM Trans. Database Syst. (tods) ______

This journal was published at 31 times by 17 of 25 experts in the last 5 years.

The experts that publish at this journal are: Pablo Barceló(1), Michael Benedikt(2), Benny Kimelfeld(4), Leonid Libkin(2), Ronald Fagin(2), Alin Deutsch(1), Ke Yi 0001(2), Christoph Koch 0001(1), Marcelo Arenas(3), Dan Suciu(1), Wim Martens(3), Yufei Tao(2), Floris Geerts(3), Nicole Schweikardt(1), Thomas Schwentick(2), Wenfei Fan(4), Angela Bonifati(2)

4. Proc. VLDB Endow. (pvldb) ______

This journal was published at 42 times by 14 of 25 experts in the last 5 years.

The experts that publish at this journal are: Michael Benedikt(2), Angela Bonifati(2), Floris Geerts(1), Dan Suciu(8), Benny Kimelfeld(2), Leonid Libkin(2), Alin Deutsch(2), Tova Milo(9), Ke Yi 0001(1), Marcelo Arenas(2), Wim Martens(1), Yufei Tao(1), Christoph Koch 0001(3), Wenfei Fan(8)

5. Dagstuhl Manifestos (dagstuhl-manifestos) ______

This journal was published at 1 times by 11 of 25 experts in the last 5 years.

The experts that publish at this journal are: Marcelo Arenas(1), Pablo Barceló(1), Dan Suciu(1), Benny Kimelfeld(1), Leonid Libkin(1), Jianwen Su(1), Tova Milo(1), Ke Yi 0001(1), Diego Calvanese(1), Wim Martens(1), Thomas Schwentick(1)

6. Theory Comput. Syst. (mst) ______

This journal was published at 14 times by 10 of 25 experts in the last 5 years.

The experts that publish at this journal are: Pablo Barceló(1), Dan Suciu(2), Benny Kimelfeld(1), Leonid Libkin(2), Martin Grohe(1), Tova Milo(2), Marcelo Arenas(1), Wim Martens(2), Michael Benedikt(1), Thomas Schwentick(2)

7. Dagstuhl Reports (dagstuhl-reports) ______

This journal was published at 9 times by 10 of 25 experts in the last 5 years.

The experts that publish at this journal are: Angela Bonifati(1), Michael Benedikt(1), Benny Kimelfeld(1), Martin Grohe(2), Tova Milo(1), Marcelo Arenas(1), Wim Martens(1), Dan Suciu(1), Nicole Schweikardt(1), Thomas Schwentick(3)

8. J. Comput. Syst. Sci. (jcss) ______

This journal was published at 11 times by 9 of 25 experts in the last 5 years.

The experts that publish at this journal are: Angela Bonifati(1), Michael Benedikt(1), Leonid Libkin(2), Ronald Fagin(1), Pablo Barceló(1), Dirk Van Gucht(2), Wim Martens(1), Yufei Tao(1), Thomas Schwentick(1)

9. J. ACM (jacm) ______

This journal was published at 10 times by 9 of 25 experts in the last 5 years.

The experts that publish at this journal are: Dan Suciu(2), Benny Kimelfeld(1), Leonid Libkin(1), Ronald Fagin(1), Martin Grohe(1), Luc Segoufin(1), Wim Martens(2), Floris Geerts(1), Thomas Schwentick(2)

10. VLDB J. (vldb) ______

This journal was published at 10 times by 7 of 25 experts in the last 5 years.

The experts that publish at this journal are: Ke Yi 0001(2), Dan Suciu(2), Angela Bonifati(2), Christoph Koch 0001(2), Wim Martens(1), Yufei Tao(2), Floris Geerts(1)

11. ACM Trans. Comput. Log. (tocl) ______

This journal was published at 10 times by 7 of 25 experts in the last 5 years.

The experts that publish at this journal are: Pablo Barceló(1), Michael Benedikt(4), Martin Grohe(1), Diego Calvanese(1), Carsten Lutz(1), Nicole Schweikardt(1), Thomas Schwentick(1)

12. Inf. Syst. (is) ______

This journal was published at 5 times by 6 of 25 experts in the last 5 years.

The experts that publish at this journal are: Leonid Libkin(1), Dirk Van Gucht(1), Diego Calvanese(1), Floris Geerts(1), Wenfei Fan(1), Norman W. Paton(1)

13. Log. Methods Comput. Sci. (lmcs) ______

This journal was published at 7 times by 5 of 25 experts in the last 5 years.

The experts that publish at this journal are: Michael Benedikt(1), Thomas Schwentick(1), Carsten Lutz(3), Martin Grohe(1), Luc Segoufin(1)

14. Commun. ACM (cacm) ______

This journal was published at 6 times by 5 of 25 experts in the last 5 years.

The experts that publish at this journal are: Tova Milo(2), Dan Suciu(2), Thomas Schwentick(1), Leonid Libkin(1), Christoph Koch 0001(1)

15. IEEE Trans. Knowl. Data Eng. (tkde) ______

This journal was published at 6 times by 5 of 25 experts in the last 5 years.

The experts that publish at this journal are: Floris Geerts(1), Angela Bonifati(1), Wenfei Fan(2), Ke Yi 0001(1), Yufei Tao(1)

16. ACM SIGLOG News (siglog) ______

This journal was published at 5 times by 5 of 25 experts in the last 5 years.

The experts that publish at this journal are: Nicole Schweikardt(1), Luc Segoufin(1), Diego Calvanese(1), Thomas Schwentick(1), Alin Deutsch(1)

17. Artif. Intell. (ai) ______

This journal was published at 4 times by 5 of 25 experts in the last 5 years.

The experts that publish at this journal are: Diego Calvanese(1), Michael Benedikt(1), Marcelo Arenas(1), Leonid Libkin(1), Carsten Lutz(1)

18. IEEE Data Eng. Bull. (debu) ______

This journal was published at 7 times by 4 of 25 experts in the last 5 years.

The experts that publish at this journal are: Tova Milo(4), Dan Suciu(1), Wenfei Fan(1), Yufei Tao(1)

19. J. Data and Information Quality (jdiq) ______

This journal was published at 5 times by 4 of 25 experts in the last 5 years.

The experts that publish at this journal are: Floris Geerts(2), Tova Milo(1), Wenfei Fan(1), Norman W. Paton(2)

20. SIGACT News (sigact) ______

This journal was published at 4 times by 4 of 25 experts in the last 5 years.

The experts that publish at this journal are: Floris Geerts(1), Christoph Koch 0001(1), Marcelo Arenas(1), Diego Calvanese(1)