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393 Publications
2017 | Conference Paper | LibreCat-ID: 26553
7th Open Challenge on Question Answering over Linked Data (QALD-7)
R. Usbeck, A.-C. Ngonga Ngomo, B. Haarmann, A. Krithara, M. Röder, G. Napolitano, in: M. Dragoni, M. Solanki, E. Blomqvist (Eds.), Semantic Web Challenges - 4th SemWebEval Challenge at {ESWC} 2017, Portoroz, Slovenia, May 28 - June 1, 2017, Revised Selected Papers, Springer, 2017, pp. 59–69.
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R. Usbeck, A.-C. Ngonga Ngomo, B. Haarmann, A. Krithara, M. Röder, G. Napolitano, in: M. Dragoni, M. Solanki, E. Blomqvist (Eds.), Semantic Web Challenges - 4th SemWebEval Challenge at {ESWC} 2017, Portoroz, Slovenia, May 28 - June 1, 2017, Revised Selected Papers, Springer, 2017, pp. 59–69.
2017 | Conference Paper | LibreCat-ID: 26554
Wombat - A Generalization Approach for Automatic Link Discovery
M. Ahmed Sherif, A.-C. Ngonga Ngomo, J. Lehmann, in: E. Blomqvist, D. Maynard, A. Gangemi, R. Hoekstra, P. Hitzler, O. Hartig (Eds.), The Semantic Web - 14th International Conference, {ESWC} 2017, Portoro{\v{z}}, Slovenia, May 28 - June 1, 2017, Proceedings, Part {I}, 2017, pp. 103–119.
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M. Ahmed Sherif, A.-C. Ngonga Ngomo, J. Lehmann, in: E. Blomqvist, D. Maynard, A. Gangemi, R. Hoekstra, P. Hitzler, O. Hartig (Eds.), The Semantic Web - 14th International Conference, {ESWC} 2017, Portoro{\v{z}}, Slovenia, May 28 - June 1, 2017, Proceedings, Part {I}, 2017, pp. 103–119.
2017 | Conference Paper | LibreCat-ID: 26555
Eaglet - a Named Entity Recognition and Entity Linking Gold Standard Checking Tool
K. Jha, M. Röder, A.-C. Ngonga Ngomo, in: E. Blomqvist, K. Hose, H. Paulheim, A. Lawrynowicz, F. Ciravegna, O. Hartig (Eds.), The Semantic Web: {ESWC} 2017 Satellite Events - {ESWC} 2017 Satellite Events, Portoro{\v{z}}, Slovenia, May 28 - June 1, 2017, Revised Selected Papers, Springer, 2017, pp. 149–154.
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K. Jha, M. Röder, A.-C. Ngonga Ngomo, in: E. Blomqvist, K. Hose, H. Paulheim, A. Lawrynowicz, F. Ciravegna, O. Hartig (Eds.), The Semantic Web: {ESWC} 2017 Satellite Events - {ESWC} 2017 Satellite Events, Portoro{\v{z}}, Slovenia, May 28 - June 1, 2017, Revised Selected Papers, Springer, 2017, pp. 149–154.
2017 | Conference Paper | LibreCat-ID: 26556
All that Glitters Is Not Gold - Rule-Based Curation of Reference Datasets for Named Entity Recognition and Entity Linking
K. Jha, M. Röder, A.-C. Ngonga Ngomo, in: E. Blomqvist, D. Maynard, A. Gangemi, R. Hoekstra, P. Hitzler, O. Hartig (Eds.), The Semantic Web - 14th International Conference, {ESWC} 2017, Portoro{\v{z}}, Slovenia, May 28 - June 1, 2017, Proceedings, Part {I}, 2017, pp. 305–320.
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K. Jha, M. Röder, A.-C. Ngonga Ngomo, in: E. Blomqvist, D. Maynard, A. Gangemi, R. Hoekstra, P. Hitzler, O. Hartig (Eds.), The Semantic Web - 14th International Conference, {ESWC} 2017, Portoro{\v{z}}, Slovenia, May 28 - June 1, 2017, Proceedings, Part {I}, 2017, pp. 305–320.
2017 | Conference Paper | LibreCat-ID: 26557
The BigDataEurope Platform - Supporting the Variety Dimension of Big Data
S. Auer, S. Scerri, A. Versteden, E. Pauwels, A. Charalambidis, S. Konstantopoulos, J. Lehmann, H. Jabeen, I. Ermilov, G. Sejdiu, A. Ikonomopoulos, S. Andronopoulos, M. Vlachogiannis, C. Pappas, A. Davettas, I. A. Klampanos, E. Grigoropoulos, V. Karkaletsis, V. de Boer, R. Siebes, M. Nadjib Mami, S. Albani, M. Lazzarini, P. Nunes, E. Angiuli, N. Pittaras, G. Giannakopoulos, G. Argyriou, G. Stamoulis, G. Papadakis, M. Koubarakis, P. Karampiperis, A.-C. Ngonga Ngomo, M.-E. Vidal, in: J. Cabot, R. De Virgilio, R. Torlone (Eds.), Web Engineering - 17th International Conference, {ICWE} 2017, Rome, Italy, June 5-8, 2017, Proceedings, Springer, 2017, pp. 41–59.
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S. Auer, S. Scerri, A. Versteden, E. Pauwels, A. Charalambidis, S. Konstantopoulos, J. Lehmann, H. Jabeen, I. Ermilov, G. Sejdiu, A. Ikonomopoulos, S. Andronopoulos, M. Vlachogiannis, C. Pappas, A. Davettas, I. A. Klampanos, E. Grigoropoulos, V. Karkaletsis, V. de Boer, R. Siebes, M. Nadjib Mami, S. Albani, M. Lazzarini, P. Nunes, E. Angiuli, N. Pittaras, G. Giannakopoulos, G. Argyriou, G. Stamoulis, G. Papadakis, M. Koubarakis, P. Karampiperis, A.-C. Ngonga Ngomo, M.-E. Vidal, in: J. Cabot, R. De Virgilio, R. Torlone (Eds.), Web Engineering - 17th International Conference, {ICWE} 2017, Rome, Italy, June 5-8, 2017, Proceedings, Springer, 2017, pp. 41–59.
2017 | Conference Paper | LibreCat-ID: 26558
Characterizing mention mismatching problems for improving recognition results
J. Carlos Oliveira de Abreu, R. Fileto, A.-C. Ngonga Ngomo, M. Röder, M. Wittwer, H. Saggion, in: M. Indrawan-Santiago, M. Steinbauer, I. Luiz Salvadori, I. Khalil, G. Anderst-Kotsis (Eds.), Proceedings of the 19th International Conference on Information Integration and Web-Based Applications {\&} Services, IiWAS 2017, Salzburg, Austria, December 4-6, 2017, {ACM}, 2017, pp. 85–94.
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J. Carlos Oliveira de Abreu, R. Fileto, A.-C. Ngonga Ngomo, M. Röder, M. Wittwer, H. Saggion, in: M. Indrawan-Santiago, M. Steinbauer, I. Luiz Salvadori, I. Khalil, G. Anderst-Kotsis (Eds.), Proceedings of the 19th International Conference on Information Integration and Web-Based Applications {\&} Services, IiWAS 2017, Salzburg, Austria, December 4-6, 2017, {ACM}, 2017, pp. 85–94.
2017 | Conference Paper | LibreCat-ID: 26559
MAG: A Multilingual, Knowledge-base Agnostic and Deterministic Entity Linking Approach
D. Moussallem, R. Usbeck, M. Röder, A.-C. Ngonga Ngomo, in: Ó. Corcho, K. Janowicz, G. Rizzo, I. Tiddi, D. Garijo (Eds.), Proceedings of the Knowledge Capture Conference, {K-CAP} 2017, Austin, TX, USA, December 4-6, 2017, {ACM}, 2017, p. 9:1-9:8.
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D. Moussallem, R. Usbeck, M. Röder, A.-C. Ngonga Ngomo, in: Ó. Corcho, K. Janowicz, G. Rizzo, I. Tiddi, D. Garijo (Eds.), Proceedings of the Knowledge Capture Conference, {K-CAP} 2017, Austin, TX, USA, December 4-6, 2017, {ACM}, 2017, p. 9:1-9:8.
2017 | Conference Paper | LibreCat-ID: 26560
Ensemble Learning of Named Entity Recognition Algorithms using Multilayer Perceptron for the Multilingual Web of Data
R. Speck, A.-C. Ngonga Ngomo, in: Ó. Corcho, K. Janowicz, G. Rizzo, I. Tiddi, D. Garijo (Eds.), Proceedings of the Knowledge Capture Conference, {K-CAP} 2017, Austin, TX, USA, December 4-6, 2017, {ACM}, 2017, p. 26:1-26:4.
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R. Speck, A.-C. Ngonga Ngomo, in: Ó. Corcho, K. Janowicz, G. Rizzo, I. Tiddi, D. Garijo (Eds.), Proceedings of the Knowledge Capture Conference, {K-CAP} 2017, Austin, TX, USA, December 4-6, 2017, {ACM}, 2017, p. 26:1-26:4.
2017 | Conference Paper | LibreCat-ID: 26561
SQCFramework: SPARQL Query Containment Benchmark Generation Framework
M. Saleem, C. Stadler, Q. Mehmood, J. Lehmann, A.-C. Ngonga Ngomo, in: Ó. Corcho, K. Janowicz, G. Rizzo, I. Tiddi, D. Garijo (Eds.), Proceedings of the Knowledge Capture Conference, {K-CAP} 2017, Austin, TX, USA, December 4-6, 2017, {ACM}, 2017, p. 28:1-28:8.
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M. Saleem, C. Stadler, Q. Mehmood, J. Lehmann, A.-C. Ngonga Ngomo, in: Ó. Corcho, K. Janowicz, G. Rizzo, I. Tiddi, D. Garijo (Eds.), Proceedings of the Knowledge Capture Conference, {K-CAP} 2017, Austin, TX, USA, December 4-6, 2017, {ACM}, 2017, p. 28:1-28:8.
2017 | Conference Paper | LibreCat-ID: 26562
Managing Lifecycle of Big Data Applications
I. Ermilov, A.-C. Ngonga Ngomo, A. Versteden, H. Jabeen, G. Sejdiu, G. Argyriou, L. Selmi, J. Jakobitsch, J. Lehmann, in: P. Rózewski, C. Lange (Eds.), Knowledge Engineering and Semantic Web - 8th International Conference, {KESW} 2017, Szczecin, Poland, November 8-10, 2017, Proceedings, Springer, 2017, pp. 263–276.
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I. Ermilov, A.-C. Ngonga Ngomo, A. Versteden, H. Jabeen, G. Sejdiu, G. Argyriou, L. Selmi, J. Jakobitsch, J. Lehmann, in: P. Rózewski, C. Lange (Eds.), Knowledge Engineering and Semantic Web - 8th International Conference, {KESW} 2017, Szczecin, Poland, November 8-10, 2017, Proceedings, Springer, 2017, pp. 263–276.
2017 | Conference Paper | LibreCat-ID: 26563
Torpedo: Improving the State-of-the-Art RDF Dataset Slicing
E. Marx, S. Shekarpour, T. Soru, A. M. P. Brasoveanu, M. Saleem, C. Baron, A. Weichselbraun, J. Lehmann, A.-C. Ngonga Ngomo, S. Auer, in: 11th {IEEE} International Conference on Semantic Computing, {ICSC} 2017, San Diego, CA, USA, January 30 - February 1, 2017, {IEEE} Computer Society, 2017, pp. 149–156.
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E. Marx, S. Shekarpour, T. Soru, A. M. P. Brasoveanu, M. Saleem, C. Baron, A. Weichselbraun, J. Lehmann, A.-C. Ngonga Ngomo, S. Auer, in: 11th {IEEE} International Conference on Semantic Computing, {ICSC} 2017, San Diego, CA, USA, January 30 - February 1, 2017, {IEEE} Computer Society, 2017, pp. 149–156.
2017 | Conference Paper | LibreCat-ID: 26564
Question Answering Over Linked Data: What is Difficult to Answer? What Affects the F scores?
M. Saleem, S. Nazari Dastjerdi, R. Usbeck, A.-C. Ngonga Ngomo, in: R. Usbeck, A.-C. Ngonga Ngomo, J.-D. Kim, K.-S. Choi, P. Cimiano, I. Fundulaki, A. Krithara (Eds.), Joint Proceedings of {BLINK2017:} 2nd International Workshop on Benchmarking Linked Data and NLIWoD3: Natural Language Interfaces for the Web of Data Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 21st - to - 22nd, 2017, CEUR-WS.org, 2017.
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M. Saleem, S. Nazari Dastjerdi, R. Usbeck, A.-C. Ngonga Ngomo, in: R. Usbeck, A.-C. Ngonga Ngomo, J.-D. Kim, K.-S. Choi, P. Cimiano, I. Fundulaki, A. Krithara (Eds.), Joint Proceedings of {BLINK2017:} 2nd International Workshop on Benchmarking Linked Data and NLIWoD3: Natural Language Interfaces for the Web of Data Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 21st - to - 22nd, 2017, CEUR-WS.org, 2017.
2017 | Conference Paper | LibreCat-ID: 26565
Benchmarking RDF Storage Solutions with IGUANA
F. Conrads, J. Lehmann, M. Saleem, A.-C. Ngonga Ngomo, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
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F. Conrads, J. Lehmann, M. Saleem, A.-C. Ngonga Ngomo, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
2017 | Conference Paper | LibreCat-ID: 26566
The Tale of Sansa Spark
I. Ermilov, J. Lehmann, G. Sejdiu, L. Bühmann, P. Westphal, C. Stadler, S. Bin, N. Chakraborty, H. Petzka, M. Saleem, A.-C. Ngonga Ngomo, H. Jabeen, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
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I. Ermilov, J. Lehmann, G. Sejdiu, L. Bühmann, P. Westphal, C. Stadler, S. Bin, N. Chakraborty, H. Petzka, M. Saleem, A.-C. Ngonga Ngomo, H. Jabeen, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
2017 | Conference Paper | LibreCat-ID: 26567
OKBQA: an Open Collaboration Framework for Development of Natural Language Question-Answering over Knowledge Bases
J.-D. Kim, C. Unger, A.-C. Ngonga Ngomo, A. Freitas, Y. Hahm, J. Kim, G.-H. Choi, J. Kim, R. Usbeck, M.-G. Kang, K.-S. Choi, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
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J.-D. Kim, C. Unger, A.-C. Ngonga Ngomo, A. Freitas, Y. Hahm, J. Kim, G.-H. Choi, J. Kim, R. Usbeck, M.-G. Kang, K.-S. Choi, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
2017 | Conference Paper | LibreCat-ID: 26568
Federated SPARQL Query Processing Via CostFed
A. Potocki, M. Saleem, T. Soru, O. Hartig, M. Voigt, A.-C. Ngonga Ngomo, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
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A. Potocki, M. Saleem, T. Soru, O. Hartig, M. Voigt, A.-C. Ngonga Ngomo, in: N. Nikitina, D. Song, A. Fokoue, P. Haase (Eds.), Proceedings of the {ISWC} 2017 Posters {\&} Demonstrations and Industry Tracks Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 23rd - to - 25th, 2017, CEUR-WS.org, 2017.
2017 | Conference Paper | LibreCat-ID: 26569
Benchmarking Link Discovery Systems for Geo-Spatial Data
T. Saveta, G. Flouris, I. Fundulaki, A.-C. Ngonga Ngomo, in: R. Usbeck, A.-C. Ngonga Ngomo, J.-D. Kim, K.-S. Choi, P. Cimiano, I. Fundulaki, A. Krithara (Eds.), Joint Proceedings of {BLINK2017:} 2nd International Workshop on Benchmarking Linked Data and NLIWoD3: Natural Language Interfaces for the Web of Data Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 21st - to - 22nd, 2017, CEUR-WS.org, 2017.
LibreCat
T. Saveta, G. Flouris, I. Fundulaki, A.-C. Ngonga Ngomo, in: R. Usbeck, A.-C. Ngonga Ngomo, J.-D. Kim, K.-S. Choi, P. Cimiano, I. Fundulaki, A. Krithara (Eds.), Joint Proceedings of {BLINK2017:} 2nd International Workshop on Benchmarking Linked Data and NLIWoD3: Natural Language Interfaces for the Web of Data Co-Located with 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 21st - to - 22nd, 2017, CEUR-WS.org, 2017.
2017 | Conference Paper | LibreCat-ID: 26570
A high-performance approach to string similarity using most frequent K characters
A. Valdestilhas, T. Soru, A.-C. Ngonga Ngomo, in: P. Shvaiko, J. Euzenat, E. Jiménez-Ruiz, M. Cheatham, O. Hassanzadeh (Eds.), Proceedings of the 12th International Workshop on Ontology Matching Co-Located with the 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 21, 2017, CEUR-WS.org, 2017, pp. 1–12.
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A. Valdestilhas, T. Soru, A.-C. Ngonga Ngomo, in: P. Shvaiko, J. Euzenat, E. Jiménez-Ruiz, M. Cheatham, O. Hassanzadeh (Eds.), Proceedings of the 12th International Workshop on Ontology Matching Co-Located with the 16th International Semantic Web Conference {(ISWC} 2017), Vienna, Austria, October 21, 2017, CEUR-WS.org, 2017, pp. 1–12.
2017 | Conference Paper | LibreCat-ID: 26571
Iguana: A Generic Framework for Benchmarking the Read-Write Performance of Triple Stores
F. Conrads, J. Lehmann, M. Saleem, M. Morsey, A.-C. Ngonga Ngomo, in: C. d’Amato, M. Fernandez, V. A. M. Tamma, F. Lécué, P. Cudré-Mauroux, J. F. Sequeda, C. Lange, J. Heflin (Eds.), The Semantic Web - {ISWC} 2017 - 16th International Semantic Web Conference, Vienna, Austria, October 21-25, 2017, Proceedings, Part {II}, Springer, 2017, pp. 48–65.
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F. Conrads, J. Lehmann, M. Saleem, M. Morsey, A.-C. Ngonga Ngomo, in: C. d’Amato, M. Fernandez, V. A. M. Tamma, F. Lécué, P. Cudré-Mauroux, J. F. Sequeda, C. Lange, J. Heflin (Eds.), The Semantic Web - {ISWC} 2017 - 16th International Semantic Web Conference, Vienna, Austria, October 21-25, 2017, Proceedings, Part {II}, Springer, 2017, pp. 48–65.
2017 | Conference Paper | LibreCat-ID: 26572
Distributed Semantic Analytics Using the SANSA Stack
J. Lehmann, G. Sejdiu, L. Bühmann, P. Westphal, C. Stadler, I. Ermilov, S. Bin, N. Chakraborty, M. Saleem, A.-C. Ngonga Ngomo, H. Jabeen, in: C. d’Amato, M. Fernandez, V. A. M. Tamma, F. Lécué, P. Cudré-Mauroux, J. F. Sequeda, C. Lange, J. Heflin (Eds.), The Semantic Web - {ISWC} 2017 - 16th International Semantic Web Conference, Vienna, Austria, October 21-25, 2017, Proceedings, Part {II}, Springer, 2017, pp. 147–155.
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J. Lehmann, G. Sejdiu, L. Bühmann, P. Westphal, C. Stadler, I. Ermilov, S. Bin, N. Chakraborty, M. Saleem, A.-C. Ngonga Ngomo, H. Jabeen, in: C. d’Amato, M. Fernandez, V. A. M. Tamma, F. Lécué, P. Cudré-Mauroux, J. F. Sequeda, C. Lange, J. Heflin (Eds.), The Semantic Web - {ISWC} 2017 - 16th International Semantic Web Conference, Vienna, Austria, October 21-25, 2017, Proceedings, Part {II}, Springer, 2017, pp. 147–155.