On the automated interpretation and indexing of American football

This work combines natural language understanding and image processing with incremental learning to develop a system that can automatically interpret and index American Football. We have developed a model for representing spatio-temporal characteristics of multiple objects in dynamic scenes in this domain. Our representation combines expert knowledge, domain knowledge, spatial knowledge and temporal knowledge. We also present an incremental learning algorithm to improve the knowledge base as well as to keep previously developed concepts consistent with new data. The advantages of the incremental learning algorithm are that is that it does not split concepts and it generates a compact conceptual hierarchy which does not store instances

Interference Conditions of the Reconsolidation Process in Humans: The Role of Valence and Different Memory Systems

Following the presentation of a reminder, consolidated memories become reactivated followed by a process of re-stabilization, which is referred to as reconsolidation. The most common behavioral tool used to reveal this process is interference produced by new learning shortly after memory reactivation. Memory interference is defined as a decrease in memory retrieval, the effect is generated when new information impairs an acquired memory. In general, the target memory and the interference task used are the same. Here we investigated how different memory systems and/or their valence could produce memory reconsolidation interference. We showed that a reactivated neutral declarative memory could be interfered by new learning of a different neutral declarative memory. Then, we revealed that an aversive implicit memory could be interfered by the presentation of a reminder followed by a threatening social event. Finally, we showed that the reconsolidation of a neutral declarative memory is unaffected by the acquisition of an aversive implicit memory and conversely, this memory remains intact when the neutral declarative memory is used as interference. These results suggest that the interference of memory reconsolidation is effective when two task rely on the same memory system or both evoke negative valence.Fil: Fernández, Rodrigo Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias; ArgentinaFil: Bavassi, Mariana Luz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; ArgentinaFil: Kaczer, Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias; ArgentinaFil: Forcato, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias; ArgentinaFil: Pedreira, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias; Argentin

Best They Forget: Challenging Notions of Remembering and Forgetting

In Jeremiah 31:34 the LORD declares, “No longer will a man teach his neighbour, or a man his brother, saying, ‘Know the LORD,’ because they will all know me, from the least of them to the greatest… For I will forgive their wickedness and will remember their sins no more” (The NIV Study Bible, 1995, p.1170). It is not the intention of this paper to enter into a theological discussion as to whether or not God is capable of forgetting; however, at very least He chooses the metaphor of forgetting to display his forgiveness for his people. This seems to conflict with a commonly held negative stigma attached to forgetting. It has long been the case, specifically in the classroom, that remembering is considered a positive activity while forgetting is considered a negative one. It is the purpose of this paper to question this assumption by consolidating research done on multiple advantages of forgetting as well as many disadvantages connected to remembering. The discussion will begin with a glimpse at the direction our world could be moving towards in terms of collected memory, an emerging world which brings with it many problems that seem to be solvable only through intentional forgetting. Keeping in mind the theoretical disadvantages of complete memory, one must also recognize the flaws of memory today as well as the possible dangers that memory poses. Last, the research will be made applicable to the classroom and methods of forgetting will be proposed in order to benefit student-learning. This discussion is leading one towards the final conclusion that, at specific times, forgetting is beneficial, ethical, and necessary for advancing student learning

Decasticization, Dignity, and ‘Dirty Work’ at the Intersections of Caste, Memory, and Disaster

In this qualitative study we examine the role of caste, class, and Dalit janitorial labor in the aftermath of floods in Chennai, India, in 2015. Drawing from a variety of sources including interviews, social media, and news coverage, we studied how Dalit (formerly known as ‘untouchable’) janitors were treated during the performance of janitorial labor for cleaning the city. Our study focuses on two theoretical premises: (a) caste-based social relations reproduce inequalities by devaluing Dalit labor as ‘dirty work’; and (b) Dalit subjectivities, labor, and sufferings including occupational hazards become invisible and ungrievable forcing Dalits to provide a counter narrative to preserve the memory of their trauma and dignity injuries. We find that the discursive construction of janitorial labor as dirty work forced Dalit janitors to work in appalling and unsafe working conditions. Janitors suffered several dignity injuries in terms of social exclusion and a lack of recognition for their efforts and accomplishments. Specifically, we examine various ways through which caste, dirty work, and dignity intersected in the narrative accounts of Dalit janitors. We also explore memory and how processes of remembering and forgetting affected the dignity claims of Dalit janitors

Memory grids: Forgetting East Berlin in Krass Clement’s Photobook Venten på i går. Auf Gestern warten (2012)

Memory grids: Forgetting East Berlin in Krass Clement’s Photobook Venten på i går. Auf Gestern warten (2012)In the article, I argue that by means of qualities intrinsic to the medium of the photobook, the renowned Danish photographer Krass Clement (b. 1946) constructs a complex narration, which, on the one hand, seeksmeta-refl ection on the relationships between photography, memory, and the perception of reality, and, on the other, explores the post-GDR condition of Berlin and Germany. Venten på i går. Auf Gestern warten (Danish and German for “Waiting for yesterday”) includes both old and contemporary images, in both colour and black-and-white, but the book is neither (n)ostalgic nor documentary. Rather, I insist that Clement’s project epitomizes memory work and that its guiding principle can be understood through Rosalind Krauss’ concept of the grid. Th e grid is here inseparable from photography’s relation to memory and reality. I explore how the dialectics between remembering and forgetting, inherent to photography, is enacted by the book, and how it foregrounds the opaqueness rather than the transparency of the medium and perception. I also present how the universe constructed by Clement unfolds within the three temporal dimensions suggested in the title of the book: a present (post-ideological) suspension between the future and the past

Stochastic learning in co-ordination games : a simulation approach

In the presence of externalities, consumption behaviour depends on the solution of a co-ordination problem. In our paper we suggest a learning approach to the study of co-ordination in consumption contexts where agents adjust their choices on the basis of the reinforcement (payoff) they receive during the game. The results of simulations allowed us to distinguish the roles of different aspects of learning in enabling co-ordination within a population of agents. Our main results highlight: 1. the role played by the speed of learning in determining failures of the co-ordination process; 2. the effect of forgetting past experiences on the speed of the co-ordination process; 3. the role of experimentation in bringing the process of co-ordination into an efficient equilibrium

On the incremental learning and recognition of the pattern of movement of multiple labelled objects in dynamic scenes

In this paper we discuss combining incremental learning and incremental recognition to classify patterns consisting of multiple objects, each represented by multiple spatio-temporal features. Importantly the technique allows for ambiguity in terms of the positions of the start and finish of the pattern. This involves a progressive classification which considers the data at each time instance in the query and thus provides a probable answer before all the query information becomes available. We present two methods that combine incremental learning and incremental recognition: a time instance method and an overall best match method.<br /