The PATTERNS 2021 event, The Twelfth International Conferences on Pervasive Patterns and Applications, targets the application of advanced patterns, at-large. In addition to support for patterns and pattern processing, special categories of patterns covering ubiquity, software, security, communications, discovery and decision are considered. As a special target, the domain-oriented patterns cover a variety of areas, from investing, dietary, forecast, to forensic and emotions. It is believed that patterns play an important role on cognition, automation, and service computation and orchestration areas. Antipatterns come as a normal output as needed lessons learned.

PATTERNS 2021 is aimed at technical papers presenting research and practical results, industrial small- and large-scale systems, challenging applications, position papers addressing the pros and cons of specific topics, such as those being discussed in the standard fora or in industry consortia, survey papers addressing the key problems and solutions on any of the topics, short papers on work in progress, and panel proposals.

We solicit both academic, research, and industrial contributions. We welcome technical papers presenting research and practical results, position papers addressing the pros and cons of specific proposals, such as those being discussed in the standard fora or in industry consortia, survey papers addressing the key problems and solutions on any of the above topics short papers on work in progress, and panel proposals.

Industrial presentations are not subject to the format and content constraints of regular submissions. We expect short and long presentations that express industrial position and status.

Tutorials on specific related topics and panels on challenging areas are encouraged.

The topics suggested by the conference can be discussed in term of concepts, state of the art, research, standards, implementations, running experiments, applications, and industrial case studies. Authors are invited to submit complete unpublished papers, which are not under review in any other conference or journal in the following, but not limited to, topic areas.

All topics and submission formats are open to both research and industry contributions.

PATTERNS 2021 conference tracks:

Basics on patterns

Design patterns; Static and dynamic patterns; Pattern identification and extraction; Validate patterns; Patterns’ accuracy; Incomplete patterns; Patterns and noise

Patterns at work

Pattern logics and algebras; Pattern recognition; Pattern matching; Pattern languages; Patterns languages/models pitfalls; Pattern specification/modeling; Pattern validation; Pattern composition; Pattern reuse; Testing in pattern-based designed systems; Manageability and maintenance of pattern-based designed systems; Architecture, architectural design and the built environment

Classification patterns

Dynamic ensemble selection; Diversity-based ensemble; Ensemble Classification; Ensemble Clustering; Active Learning from video streams patterns; Geodesic-based similarities; Leaf species classification; Clothing image characterization; Mountain drainage patterns; Texture classification; Large scale image categorization; Clustering Web search frequency; Descriptors for food recognition; Signal patterns; High-speed video patterns

Medical and facial image patterns

Global similarities; Image quality assessment; Discovering images ROI (Regions of Interest); Features semantic relations; Lesion detection; 3D Face structures; Facial expression recognition; Shared feature learning; Video-to-Video face recognition; Learning patterns of disabled/elderly; Using therapeutic data; Malignancy-oriented patterns; Detection of misalignment; Image-based navigation systems

Tracking human patterns

Tracking Multiple Persons; Tracking in Crowded situations; Tracking by adapting detectors; Part-based appearance; Structure-constrained motion; Structure sparsity-based representation; Dominant colors patterns; Population drift-based features; Drivers face detection; Authentication via pore patterns; Iris segmentation systems; Rapid facial movements systems; Appearance-based feature analysis; Sketch recognition patterns; Mobile devices adaptive classification; Direction change patterns; Human action recognition; Appearance-based gaze tracking patterns; Free head movement patterns; Pattern-based locaization

Action recognition patterns

Pre-classification of handwritten characters; Action classification; Classification of human actions; Activity recognition in Smart homes; Learning for activity representation; Bag-of-Words for action recognition; Room occupancy patterns

Color and texture patterns

Texture classification; Extracting texture features; Texture-based descriptors; Color image patterns; Shape co-occurrence patterns; Fluorescence microscopy images; Texture defect detection patterns

Ubiquity patterns

User mobility patterns; Social networking patterns; Content dependency patterns; Content accessing patterns; Behavioral autonomy patterns; Prediction patterns /behavioral, structure, environment/; Patterns of discovery

Software patterns

Software design patterns; Software reuse patterns; Software quality patterns; Software testing patterns; Software performance, security, and safety patterns; Software management patterns; Patterns for evolving software elements

Security patterns

Security patterns; Patterns of trust; Attack patterns; Authorization patterns; Failed access patterns; Intrusion attempt patterns; Local malware patterns; Distributed malware patterns; Predictive patterns; Mobility patterns; Tracking patterns

System management patterns

Management and control patterns; Monitoring patterns; Correlation patterns; Event patterns; Visualization patterns

Discovery and decision patterns

Search patterns; Data mining for patterns; Query patterns; Knowledge patterns; Behavioral patterns; Reasoning patterns; Decision patterns; Patterns in WWW; Predictive patterns; Mobility patterns; Tracking patterns

Communications patterns

Communication patterns; Propagation patterns; Traffic/routing patterns; P2P and P4P patterns; Configuration change patterns; System abnormal behavior patterns

Domain-oriented patterns

Forensic patterns; Genomic patterns; Image patterns; Voice patterns; Speech patterns; Hand writing patterns; Text-embedded sentiment patterns; Emotion recognition patterns; Site access patterns; Service orchestration; Keyboard typing patterns; Financial/stock patterns; Shopping patterns; Dietary patterns; Global warming patterns; Job market patterns; Stock movement patterns; Investing patterns

Antipatterns and lessons learned

Architectural; Design; Development; People and project management; Social