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- research-articleMay 2024
Effective Video Summarization by Extracting Parameter-Free Motion Attention
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), Volume 20, Issue 7Article No.: 219, Pages 1–20https://doi.org/10.1145/3654670Video summarization remains a challenging task despite increasing research efforts. Traditional methods focus solely on long-range temporal modeling of video frames, overlooking important local motion information that cannot be captured by frame-level ...
- research-articleJanuary 2023
Parameter-free marginal fisher analysis based on L2,1-norm regularisation for face recognition
International Journal of Computational Science and Engineering (IJCSE), Volume 26, Issue 2Pages 210–219https://doi.org/10.1504/ijcse.2023.129740Marginal fisher analysis is an effective feature extraction algorithm for face recognition, but the algorithm is sensitive to the influence of the neighbourhood parameter setting, and does not have the function of feature selection. In order to solve the ...
- research-articleOctober 2022
A Parameter-free Multi-view Information Bottleneck Clustering Method by Cross-view Weighting
MM '22: Proceedings of the 30th ACM International Conference on MultimediaPages 3792–3800https://doi.org/10.1145/3503161.3547985With the fast-growing multi-modal/media data in the Big Data era, multi-view clustering (MVC) has attracted lots of attentions lately. Most MVCs focus on integrating and utilizing the complementary information among views by linear sum of the learned ...
- research-articleAugust 2016
Skinny-dip: Clustering in a Sea of Noise
KDD '16: Proceedings of the 22nd ACM SIGKDD International Conference on Knowledge Discovery and Data MiningPages 1055–1064https://doi.org/10.1145/2939672.2939740Can we find heterogeneous clusters hidden in data sets with 80% noise? Although such settings occur in the real-world, we struggle to find methods from the abundance of clustering techniques that perform well with noise at this level. Indeed, perhaps ...
- research-articleJune 2016
Non-linear Time-series Analysis of Social Influence
SIGMOD'16 PhD: Proceedings of the 2016 on SIGMOD'16 PhD SymposiumPages 12–16https://doi.org/10.1145/2926693.2929902In this paper, we present Δ-SPOT, a non-linear model for analysing large scale web search data, and its fitting algorithm. Δ-SPOT can forecast long-range future dynamics of the keywords/queries. We use the Google Search, Twitter and MemeTracker data set ...
- research-articleApril 2016
Non-Linear Mining of Competing Local Activities
WWW '16: Proceedings of the 25th International Conference on World Wide WebPages 737–747https://doi.org/10.1145/2872427.2883010Given a large collection of time-evolving activities, such as Google search queries, which consist of d keywords/activities for m locations of duration n, how can we analyze temporal patterns and relationships among all these activities and find ...
- research-articleMay 2015
The Web as a Jungle: Non-Linear Dynamical Systems for Co-evolving Online Activities
WWW '15: Proceedings of the 24th International Conference on World Wide WebPages 721–731https://doi.org/10.1145/2736277.2741092Given a large collection of co-evolving online activities, such as searches for the keywords "Xbox", "PlayStation" and "Wii", how can we find patterns and rules? Are these keywords related? If so, are they competing against each other? Can we forecast ...
- research-articleJanuary 2013
A$^2$ILU: Auto-accelerated ILU Preconditioner for Sparse Linear Systems
SIAM Journal on Scientific Computing (SISC), Volume 35, Issue 2Pages A1212–A1232https://doi.org/10.1137/110842685The ILU-based preconditioning methods in previous work have their own parameters to improve their performances. Although the parameters may degrade the performance, their determination is left to users. Thus, these previous methods are not reliable in ...
- research-articleFebruary 2012
Hierarchical clustering and outlier detection for effective image data organization
ICUIMC '12: Proceedings of the 6th International Conference on Ubiquitous Information Management and CommunicationArticle No.: 18, Pages 1–5https://doi.org/10.1145/2184751.2184774This paper proposes an approach of hierarchical image data organization for effective image retrieval. Our approach is basically based on the Cross-Association (CA) that was originally devised for uncovering hidden communities in data without requiring ...
- articleJanuary 2012
Dictionary Learning for Noisy and Incomplete Hyperspectral Images
SIAM Journal on Imaging Sciences (SJISBI), Volume 5, Issue 1Pages 33–56https://doi.org/10.1137/110837486We consider analysis of noisy and incomplete hyperspectral imagery, with the objective of removing the noise and inferring the missing data. The noise statistics may be wavelength dependent, and the fraction of data missing (at random) may be ...
- research-articleAugust 2010
Blind Source Separation With Parameter-Free Adaptive Step-Size Method for Robot Audition
IEEE Transactions on Audio, Speech, and Language Processing (TASLP-II), Volume 18, Issue 6Pages 1476–1485https://doi.org/10.1109/TASL.2009.2035219This paper proposes an adaptive step-size method for blind source separation (BSS) suitable for robot audition systems. The design of the step-size parameter is a critical consideration when we apply BSS to real-world applications such as robot audition ...
- ArticleNovember 2008
A Parameter-Free Clustering Algorithm Based on Density Model
ICYCS '08: Proceedings of the 2008 The 9th International Conference for Young Computer ScientistsPages 1825–1831https://doi.org/10.1109/ICYCS.2008.415As a fundamental problem in data mining, pattern recognition and machine learning, clustering algorithm has been studied for decades, and has been improved in many aspects. However, parameter-free clustering algorithms are still quite weak, which makes ...
- ArticleApril 2007
A new parameter-free classification algorithm based on nearest neighbor rule and K-means for mobile devices
ACOS'07: Proceedings of the 6th Conference on WSEAS International Conference on Applied Computer Science - Volume 6Pages 151–154This paper proposes a parameter-free classifier which combines K-means with Nearest Neighbor Rule (NNR) - called Incremental Cluster-based Classification (ICC). The classifier is used in low power and capacity devices such as Personal Digital Assistant (...