AutoTopography: what can physical mementos tell us about digital memories?

Current technology makes it possible to capture huge amounts of information related to everyday experiences. Despite this, we know little about the processes by which people identify and manage mementos - objects which are directly meaningful to their memories. Among the millions of objects people encounter in a lifetime, few become such reminders of people, places or events. We report fieldwork where participants gave us a tour of their homes describing how and why particular objects become mementos. Our findings extend the existing digital memory literature; first our participants didn't view their activities as experiential 'capture', nor were mementos limited to pictorial representations of people and events; instead they included everyday objects. Furthermore, mementos were not only displayed and shared, but also integrated into everyday activities. Finally there were complex relations between house location and memento type. We discuss the theoretical and technical implications of our work

Making history: intentional capture of future memories

Lifelogging' technology makes it possible to amass digital data about every aspect of our everyday lives. Instead of focusing on such technical possibilities, here we investigate the way people compose long-term mnemonic representations of their lives. We asked 10 families to create a time capsule, a collection of objects used to trigger remembering in the distant future. Our results show that contrary to the lifelogging view, people are less interested in exhaustively digitally recording their past than in reconstructing it from carefully selected cues that are often physical objects. Time capsules were highly expressive and personal, many objects were made explicitly for inclusion, however with little object annotation. We use these findings to propose principles for designing technology that supports the active reconstruction of our future past

Remembering today tomorrow: exploring the human-centred design of digital mementos

This paper describes two-part research exploring the context for and human-centred design of ‘digital mementos’, as an example of technology for reflection on personal experience(in this case, autobiographical memories). Field studies into families’ use of physical and digital objects for remembering provided a rich understanding of associated user needs and human values, and suggested properties for ‘digital mementos’ such as being ‘not like work’, discoverable and fun. In a subsequent design study, artefacts were devised to express these features and develop the understanding of needs and values further via discussion with groups of potential ‘users’. ‘Critical artefacts’(the products of Critical Design)were used to enable participants to envisage broader possibilities for social practices and applications of technology in the context of personal remembering, and thus to engage in the design of novel devices and systems relevant to their lives. Reflection was a common theme in the work, being what the digital mementos were designed to afford and the mechanism by which the design activity progressed. Ideas for digital mementos formed the output of this research and expressed the designer’s and researcher’s understanding of participants’ practices and needs, and the human values that underlie them and, in doing so, suggest devices and systems that go beyond usability to support a broader conception of human activity

Family memories in the home: contrasting physical and digital mementos

We carried out fieldwork to characterise and compare physical and digital mementos in the home. Physical mementos are highly valued, heterogeneous and support different types of recollection. Contrary to expectations, we found physical mementos are not purely representational, and can involve appropriating common objects and more idiosyncratic forms. In contrast, digital mementos were initially perceived as less valuable, although participants later reconsidered this. Digital mementos were somewhat limited in function and expression, largely involving representational photos and videos, and infrequently accessed. We explain these digital limitations and conclude with design guidelines for digital mementos, including better techniques for accessing and integrating these into everyday life, allowing them to acquire the symbolic associations and lasting value that characterise their physical counterparts

Evaluation of Wearable Sensor Tag Data Segmentation Approaches for Real Time Activity Classification in Elderly

Abstract. The development of human activity monitoring has allowed the creation of multiple applications, among them is the recognition of high falls risk activities of older people for the mitigation of falls occurrences. In this study, we apply a graphical model based classification technique(conditional random field) to evaluate various sliding window based techniques for the real time prediction of activities in older subjects wearing a passive (batteryless) sensor enabled RFID tag. The system achieved maximum overall real time activity prediction accuracy of 95% using a time weighted windowing technique to aggregate contextual information to input sensor data

Real-time human ambulation, activity, and physiological monitoring:taxonomy of issues, techniques, applications, challenges and limitations

Automated methods of real-time, unobtrusive, human ambulation, activity, and wellness monitoring and data analysis using various algorithmic techniques have been subjects of intense research. The general aim is to devise effective means of addressing the demands of assisted living, rehabilitation, and clinical observation and assessment through sensor-based monitoring. The research studies have resulted in a large amount of literature. This paper presents a holistic articulation of the research studies and offers comprehensive insights along four main axes: distribution of existing studies; monitoring device framework and sensor types; data collection, processing and analysis; and applications, limitations and challenges. The aim is to present a systematic and most complete study of literature in the area in order to identify research gaps and prioritize future research directions

System for acquisition, processing and visualization of biophysiological signals and contextual information

Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2012.Cataloged from PDF version of thesis.Includes bibliographical references (p. 69-73).If we are to learn the effects of the environment and our day-to-day actions, and choices on our physiology, we must develop systems that will label biophysiological senor data with contextual information. In this thesis I first present an architecture and implementation of FEEL: a system for the acquisition, processing and visualization of biophysiological signals and contextual information. The system comprises a mobile client application (FMC) and a backend server, The mobile client collects contextual information: phone call details, email reading details, calendar entries, and user location at a fixed interval that is transmitted to the backend server. The backend server stores the contextual information and biophysiological signal data that is uploaded by the user, processes the information and provides a novel interface for viewing the combined data. Next, I present the results of a 10-day user study in which users wore Electrodermal Activity (EDA) wrist sensors that measured their autonomic arousal levels. These users were requested to upload the sensor data and annotate it at the end of the day at first, and then after two days. One group of users had access to both the signal and the full contextual information collected by the mobile phone and the other group could only access the bio physiological signal. At the end of the study the users were asked to fill in a System Usability Scale (SUS) questionnaire, a user experience survey and a Toronto-Alexithymia (TAS-20) questionnaire. My results show that the FEEL system enables the users to annotate bio-physiological signals at a greater effectiveness than the current state of the art. Finally, I showed that there is a correlation between a person's ability to determine their own arousal level and their score on the Toronto-alexithymia test: the less alexythymic they were, the better their correlation between the EDA and their self-reported arousal.by Yadid Ayzenberg.S.M

Museum, memories and digital stories : A liminal space for human computer interaction.

Objects, material or digital, mediate memories: they act as anchors in between temporal notions and relations of past and present. Through those objects of memory, the act of remembering occurs neither completely relived in the mind, nor fully captured in the medium. Essential to personal memories, objects represent also our collective memory and capture our social history.The papers submitted for this PhD by selected publications look at the design of innovative technology that can make remembering more evocative and affective. They look at both museums, where digital and material are combined in an augmented reality, and personal/family contexts, where the home and mundane objects can be technologically enhanced to encapsulate digital memories.The museum was ideal to experiment with hybrid settings that combine material (the collection and the architectural space) and digital (the information) (papers 1 to 3). Personalization of information was used to augment the reality of rooms and exhibits: whole body interaction (i.e. physical movements in the space) was used to select and personalize the content and engage visitors with both material (the object) and digital (the information). Although the mobile technology is dated, these papers show the value of combining digital and physical to provide a holistic experience that made visitors wonder. Where the fusion occurs, however, is in the digital technology. To balance this perspective, paper 4 looks at the effect of taking the digital content out into the exhibition space. My recent research (papers 5-9) looks at objects of memory in the personal realm, in particular in the family home. Starting from observing the role and function of mementos, I conclude that a more holistic and organic approach has to be taken to make personal digital objects of memory more present in people's life. Materialization can be achieved with digital devices designed for individual and family use, so that the product fits with the mundane aspects of life, is immediate, and stimulates affect, not efficiency.Finally papers 10 and 11 provide evidence of the innovative methodologies I have developed and successfully used in iterative user studies and evaluations across different research projects and many years of research. As a whole this submission shows that there is a huge design space to explore in looking at how technology could be used in public or private spaces to bring together the two aspects of memory: remembering in the mind and capturing through objects, in order to preserve our digital life as tangible interactive objects