Experiments in lifelog organisation and retrieval at NTCIR

Lifelogging can be described as the process by which individuals use various software and hardware devices to gather large archives of multimodal personal data from multiple sources and store them in a personal data archive, called a lifelog. The Lifelog task at NTCIR was a comparative benchmarking exercise with the aim of encouraging research into the organisation and retrieval of data from multimodal lifelogs. The Lifelog task ran for over 4 years from NTCIR-12 until NTCIR-14 (2015.02–2019.06); it supported participants to submit to five subtasks, each tackling a different challenge related to lifelog retrieval. In this chapter, a motivation is given for the Lifelog task and a review of progress since NTCIR-12 is presented. Finally, the lessons learned and challenges within the domain of lifelog retrieval are presented

Model podded propeller-ice interaction in extreme conditions using a probabilistic model

Extreme ice loads acting on a model propeller blade during propeller-ice interactions are studied for input to the design and maintenance of ice class propellers. The main focus of this paper is to develop a framework for analyzing ice loads on a propeller blade using probabilistic methods based on experimental results. The Poisson distribution is used for the events of the propeller-ice interactions and the cumulative density function for extreme ice loads is modeled by a double exponential form (Gumbel Type). Propeller-ice interaction experiments were conducted in the ice tank at the National Research Council of Canada Institute for Ocean Technology (NRC/IOT). A model podded propeller was used for the experiments and ice loads were measured with a sixcomponent dynamometer attached to the root of the propeller blade inside the hub. Based on the experimental results, extreme values are plotted with an exceedance probability. Some results for the maximum blade thrust, the maximum shaft thrust and the maximum out of plane bending moment are presented in this paper. The modeling of the extreme probability is also described briefly.NRC publication: Ye

Interactive video search tools : A detailed analysis of the video browser showdown 2015

Interactive video retrieval tools developed over the past few years are emerging as powerful alternatives to automatic retrieval approaches by giving the user more control as well as more responsibilities. Current research tries to identify the best combinations of image, audio and text features that combined with innovative UI design maximize the tools performance. We present the last installment of the Video Browser Showdown 2015 which was held in conjunction with the International Conference on MultiMedia Modeling 2015 (MMM 2015) and has the stated aim of pushing for a better integration of the user into the search process. The setup of the competition including the used dataset and the presented tasks as well as the participating tools will be introduced . The performance of those tools will be thoroughly presented and analyzed. Interesting highlights will be marked and some predictions regarding the research focus within the field for the near future will be made