Abstract
Publications home
Exploration of interesting dense regions on spatial data
at
| Bernard Omidvar-Tehrani, Plácido A. Souza Neto, Francisco B. Silva Júnior, Felipe F. Pontes |
| Big Mobility Data Analytics Workshop at the 23rd International Conference on Extending Database Technology (EDBT) Conference, Copenhagen, Denmark (virtual event), 30 March-2 April, 2020 |
| Download |
Nowadays, spatial data are ubiquitous in various fields of science, such as transportation and smart city management. A recent research direction in analyzing spatial data is to provide means for “exploratory analysis” of such data where users are guided towards interesting options in consecutive analysis iterations. Typically, the guidance component learns user’s preferences using his/her explicit feedback, e.g., picking a spatial point of interest (POI) or selecting a region of interest. However, it is often the case that users forget or don’t feel necessary to explicitly express their feedback in what they find interesting. Our approach captures implicit feedback on spatial data. The approach consists of observing mouse moves (as a means of user’s interaction) to discover interesting spatial regions with dense mouse hovers. In this paper, we define, formalize, and explore Interesting Dense Regions (IDRs) which capture preferences of users, in order to automatically find interesting spatial highlights. Our approach involves a polygon-based abstraction layer for capturing preferences. Using these IDRs, we highlight POIs to guide users in the analysis process. We discuss the efficiency and effectiveness of our approach through realistic examples and experiments on Airbnb and Yelp datasets.
Related Content
To make robots autonomous in real-world everyday spaces, they should be able to learn from their interactions within these spaces, how to best execute tasks specified by non-expert users in a safe and reliable way. To do so requires sequential decision-making skills that combine machine learning, adaptive planning and control in uncertain environments as well as solving hard combinatorial optimisation problems. Our research combines expertise in reinforcement learning, computer vision, robotic control, sim2real transfer, large multimodal foundation models and neural combinatorial optimisation to build AI-based architectures and algorithms to improve robot autonomy and robustness when completing everyday complex tasks in constantly changing environments.
VISION
The research we conduct on expressive visual representations is applicable to visual search, object detection, image classification and the automatic extraction of 3D human poses and shapes that can be used for human behavior understanding and prediction, human-robot interaction or even avatar animation. We also extract 3D information from images that can be used for intelligent robot navigation, augmented reality and the 3D reconstruction of objects, buildings or even entire cities.
Our work covers the spectrum from unsupervised to supervised approaches, and from very deep architectures to very compact ones. We’re excited about the promise of big data to bring big performance gains to our algorithms but also passionate about the challenge of working in data-scarce and low-power scenarios.
Furthermore, we believe that a modern computer vision system needs to be able to continuously adapt itself to its environment and to improve itself via lifelong learning. Our driving goal is to use our research to deliver embodied intelligence to our users in robotics, autonomous driving, via phone cameras and any other visual means to reach people wherever they may be.
This web site uses cookies for the site search, to display videos and for aggregate site analytics.
Learn more about these cookies in our privacy notice.
Cookie settings
You may choose which kind of cookies you allow when visiting this website. Click on "Save cookie settings" to apply your choice.
This content is currently blocked. To view the content please either 'Accept social media cookies' or 'Accept all cookies'.
For more information on cookies see our privacy notice.