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495 results on '"Sapino, Maria Luisa"'

1. DataStorm-EM: Exploration of Alternative Timelines within Continuous-Coupled Simulation Ensembles

Author

Azad, Fahim Tasneema, Anton, Javier Redondo, Mitra, Shubhodeep, Singh, Fateh, Behrens, Hans, Li, Mao-Lin, Arslan, Bilgehan, Candan, K. Selçuk, and Sapino, Maria Luisa

Subjects
Computer Science - Multiagent Systems
Abstract

Many socio-economical critical domains (such as sustainability, public health, and disasters) are characterized by highly complex and dynamic systems, requiring data and model-driven simulations to support decision-making. Due to a large number of unknowns, decision-makers usually need to generate ensembles of stochastic scenarios, requiring hundreds or thousands of individual simulation instances, each with different parameter settings corresponding to distinct scenarios, As the number of model parameters increases, the number of potential timelines one can simulate increases exponentially. Consequently, simulation ensembles are inherently sparse, even when they are extremely large. This necessitates a platform for (a) deciding which simulation instances to execute and (b) given a large simulation ensemble, enabling decision-makers to explore the resulting alternative timelines, by extracting and visualizing consistent, yet diverse timelines from continuous-coupled simulation ensembles. In this article, we present DataStorm-EM platform for data- and model-driven simulation ensemble management, optimization, analysis, and exploration, describe underlying challenges and present our solution.

Published
2024

6. GTT: Guiding the Tensor Train Decomposition

Author

Li, Mao-Lin, Candan, K. Selçuk, Sapino, Maria Luisa, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Satoh, Shin'ichi, editor, Vadicamo, Lucia, editor, Zimek, Arthur, editor, Carrara, Fabio, editor, Bartolini, Ilaria, editor, Aumüller, Martin, editor, Jónsson, Björn Þór, editor, and Pagh, Rasmus, editor

Published
2020
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7. Noise Adaptive Tensor Train Decomposition for Low-Rank Embedding of Noisy Data

Author

Li, Xinsheng, Candan, K. Selçuk, Sapino, Maria Luisa, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Satoh, Shin'ichi, editor, Vadicamo, Lucia, editor, Zimek, Arthur, editor, Carrara, Fabio, editor, Bartolini, Ilaria, editor, Aumüller, Martin, editor, Jónsson, Björn Þór, editor, and Pagh, Rasmus, editor

Published
2020
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11. Multimedia Data Querying

Author

Selcuk Candan, K., Sapino, Maria Luisa, Oria, Vincent, Section editor, Satoh, Shin'ichi, Section editor, Liu, Ling, editor, and Özsu, M. Tamer, editor

Published
2018
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12. sDTW: Computing DTW Distances using Locally Relevant Constraints based on Salient Feature Alignments

Author

Candan, K. Selçuk, Rossini, Rosaria, Sapino, Maria Luisa, and Wang, Xiaolan

Subjects
Computer Science - Databases
Abstract

Many applications generate and consume temporal data and retrieval of time series is a key processing step in many application domains. Dynamic time warping (DTW) distance between time series of size N and M is computed relying on a dynamic programming approach which creates and fills an NxM grid to search for an optimal warp path. Since this can be costly, various heuristics have been proposed to cut away the potentially unproductive portions of the DTW grid. In this paper, we argue that time series often carry structural features that can be used for identifying locally relevant constraints to eliminate redundant work. Relying on this observation, we propose salient feature based sDTW algorithms which first identify robust salient features in the given time series and then find a consistent alignment of these to establish the boundaries for the warp path search. More specifically, we propose alternative fixed core&adaptive width, adaptive core&fixed width, and adaptive core&adaptive width strategies which enforce different constraints reflecting the high level structural characteristics of the series in the data set. Experiment results show that the proposed sDTW algorithms help achieve much higher accuracy in DTWcomputation and time series retrieval than fixed core & fixed width algorithms that do not leverage local features of the given time series., Comment: VLDB2012

Published
2012

18. Multimedia Recommendation and Delivery Strategies

Author

Pensa, Ruggero G., Penta, Antonio, Sapino, Maria Luisa, Carey, Michael J., Series editor, Ceri, Stefano, Series editor, Colace, Francesco, editor, De Santo, Massimo, editor, Moscato, Vincenzo, editor, Picariello, Antonio, editor, Schreiber, Fabio A., editor, and Tanca, Letizia, editor

Published
2015
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19. Pancommunity: Non-Monolithic Complex Epidemic and Pandemic Modeling

Author

Azad, Fahim Tasneema, primary, Redondo Antón, Javier, additional, Arslan, Bilgehan, additional, Candan, K. Selçuk, additional, Sapino, Maria Luisa, additional, Chowell-Puente, Gerardo, additional, Pedrielli, Guilia, additional, Mitra, Shubhodeep, additional, Singh, Fateh, additional, Behrens, Hans, additional, and Li, Mao-Lin, additional

Published
2023
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21. Recommending Multimedia Objects in Cultural Heritage Applications

Author

Bartolini, Ilaria, Moscato, Vincenzo, Pensa, Ruggero G., Penta, Antonio, Picariello, Antonio, Sansone, Carlo, Sapino, Maria Luisa, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Petrosino, Alfredo, editor, Maddalena, Lucia, editor, and Pala, Pietro, editor

Published
2013
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23. Characterizing Multimedia Objects through Multimodal Content Analysis and Fuzzy Fingerprints

Author

Messina, Alberto, Montagnuolo, Maurizio, Sapino, Maria Luisa, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Damiani, Ernesto, editor, Yetongnon, Kokou, editor, Chbeir, Richard, editor, and Dipanda, Albert, editor

Published
2009
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25. Topic Development Based Refinement of Audio-Segmented Television News

Author

Favenza, Alfredo, Cataldi, Mario, Sapino, Maria Luisa, Messina, Alberto, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Kapetanios, Epaminondas, editor, Sugumaran, Vijayan, editor, and Spiliopoulou, Myra, editor

Published
2008
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27. Modular Design of Media Retrieval Workflows Using ARIA

Author

Peng, Lina, Kwon, Gisik, Chen, Yinpeng, Candan, K. Selçuk, Sundaram, Hari, Chatha, Karamvir, Sapino, Maria Luisa, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Sundaram, Hari, editor, Naphade, Milind, editor, Smith, John R., editor, and Rui, Yong, editor

Published
2006
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29. A Rule Based Approach to Message Board Topics Classification

Author

Antonelli, Fabrizio, Sapino, Maria Luisa, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Candan, K. Selçuk, editor, and Celentano, Augusto, editor

Published
2005
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36. SEA: segment-enrich-annotate paradigm for adapting dialog-based content for improved accessibility

Author

Candan, K. Selcuk, Donderler, Mehmet E., Hedgpeth, Terri, Kim, Jong Wook, Li, Qing, and Sapino, Maria Luisa

Subjects
Handicapped access device, Algorithm, Self-help devices for the disabled -- Usage, Access for the disabled -- Methods, Algorithms -- Research
Abstract

While navigation within complex information spaces is a problem for all users, the problem is most evident with individuals who are blind who cannot simply locate, point, and click on a link in hypertext documents with a mouse. Users who are blind have to listen searching for the link in the document using only the keyboard and a screen reader program, which may be particularly inefficient in large documents with many links or deep hierarchies that are hard to navigate. Consequently, they are especially penalized when the information being searched is hidden under multiple layers of indirections. In this article, we introduce a segment-enrich-annotate (SEA) paradigm for adapting digital content with deep structures for improved accessibility. In particular, we instantiate and evaluate this paradigm through the iCare-Assistant, an assistive system for helping students who are blind in accessing Web and electronic course materials. Our evaluations, involving the participation of students who are blind, showed that the iCare-Assistant system, built based on the SEA paradigm, reduces the navigational overhead significantly and enables user who are blind access complex online course servers effectively. Categories and Subject Descriptors: H.3.1 [Information Storage and Retrieval]: Content Analysis and Indexing--Abstracting methods, indexing methods; H.5.4 [Information Interfaces and Presentation]: Hypertext/Hypermedia--Navigation, user issues; H.5.1 [Information Interfaces and Presentation]: Multimedia Information Systems--Hypertext navigation and maps; K.4.2 [Computers and Society]: Social Issues--Assistive technologies for persons with disabilities General Terms: Human Factors, Algorithms, Experimentation, Performance Additional Key Words and Phrases: Web navigational aids, assistive technology for blind users, educational discussion boards and Web sites, segmentation, annotation ACM Reference Format: Candan, K. S., Donderler, M. E., Hedgpeth, T., Kim, J. W., Li, Q., and Sapino, M. L. 2009. SEA: Segment-enrich-annotate paradigm for adapting dialog-based content for improved accessibility. ACM Trans. Inform. Syst. 27, 3, Article 15 (May 2009), 45 pages. DOI = 10.1145/1508850.1508853 http://doi.acm.org/10.1145/1508850.1508853

Published
2009

43. XML Data Integration

Author

Qi, Yan, primary, Cao, Huiping, additional, Candan, K. Selçuk, additional, and Sapino, Maria Luisa, additional

Published
2010
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44. XML Data Integration

Author

Cao, Huiping, primary, Qi, Yan, additional, Candan, K. Selçuk, additional, and Sapino, Maria Luisa, additional

Published
2010
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46. Flexible support for multiple access control Policies

Author

Jajodia, Sushil, Samarati, Pierangela, Sapino, Maria Luisa, and Subrahmanian, V.S.

Subjects
Access control (Computers) -- Evaluation, Database administration -- Evaluation, Information management -- Methods
Abstract

Although several access control policies can be devised for controlling access to information, all existing authorization models, and the corresponding enforcement mechanisms, are based on a specific policy (usually the closed policy). As a consequence, although different policy choices are possible in theory, in practice only a specific policy can actually be applied within a given system. In this paper, we present a unified framework that can enforce multiple access control policies within a single system. The framework is based on a language through which users can specify security policies to be enforced on specific accesses. The language allows the specification of both positive and negative authorizations and incorporates notions of authorization derivation, conflict resolution, and decision strategies. Different strategies may be applied to different users, groups, objects, or roles, based on the needs of the security policy. The overall result is a flexible and powerful, yet simple, framework that can easily capture many of the traditional access control policies as well as protection requirements that exist in real-world applications, but are seldom supported by existing systems. The major advantage of our approach is that it can be used to specify different access control policies that can all coexist in the same system and be enforced by the same security server. Categories and Subject Descriptors: H.2.7 [Database Management]: Database Administration--security, integrity, and protection; K.6.5 [Management of Computing and Information Systems]: Security and Protection General Terms: Management, Security Additional Key Words and Phrases: Access control policy, authorization, logic programming

Published
2001

49. CA-Smooth

Author

Rossini, Rosaria, primary, Poccia, Silvestro, additional, Candan, K. Selcuk, additional, and Sapino, Maria Luisa, additional

Published
2019
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