4,622 research outputs found
Contextual Media Retrieval Using Natural Language Queries
The widespread integration of cameras in hand-held and head-worn devices as
well as the ability to share content online enables a large and diverse visual
capture of the world that millions of users build up collectively every day. We
envision these images as well as associated meta information, such as GPS
coordinates and timestamps, to form a collective visual memory that can be
queried while automatically taking the ever-changing context of mobile users
into account. As a first step towards this vision, in this work we present
Xplore-M-Ego: a novel media retrieval system that allows users to query a
dynamic database of images and videos using spatio-temporal natural language
queries. We evaluate our system using a new dataset of real user queries as
well as through a usability study. One key finding is that there is a
considerable amount of inter-user variability, for example in the resolution of
spatial relations in natural language utterances. We show that our retrieval
system can cope with this variability using personalisation through an online
learning-based retrieval formulation.Comment: 8 pages, 9 figures, 1 tabl
An embodied conversational agent for intelligent web interaction on pandemic crisis communication
In times of crisis, an effective communication mechanism is paramount in providing accurate and timely information to the community. In this paper we study the use of an intelligent embodied conversational agent (EGA) as the front end interface with the public for a Crisis Communication Network Portal (CCNet). The proposed system, CCNet, is an integration of the intelligent conversation agent, AINI, and an Automated Knowledge Extraction Agent (AKEA). AKEA retrieves first hand information from relevant sources such as government departments and news channels. In this paper, we compare the interaction of AINI against two popular search engines, two question answering systems and two conversational systems
Evaluating SMS parsing using automated testing software
Mobile phones are ubiquitous with millions of users acquiring them every day for personal, business and social usage or communication.
Its enormous pervasiveness has created a great advantage for its use as a technological tool applicable to overcome the challenges of
information dissemination regarding burning issues, advertisement, and health related matters. Short message services (SMS), an integral
functional part of cell phones, can be turned into a major tool for accessing databases of information on HIV/AIDS as appreciable
percentage of the youth embrace the technology. The common features by the users of the unique language are the un-grammatical
structure, convenience of spelling, homophony of words and alphanumeric mix up of the arrangement of words. This proves it to be
difficult to serve as query in the search engine architecture. In this work SMS query was used for information accessing in Frequently
Asked Question FAQ system under a specified medical domain. Finally, when the developed system was measured in terms of proximity
to the answer retrieved remarkable results were observed
Text Messaging a tool in e-Health services
HIV/AIDS continues to be a menace to the
global community, especially in sub-Saharan Africa and
South Africa is not an exception. The infection rate is
continues to grow, in particular, among the young adults.
Cell phones have been identified as one of the tools that
can be used to overcome the challenge of information
dissemination regarding HIV/AIDS among young adults
because of its acceptability within this age group. Access to
appropriate information can be a powerful for prevention
and management of many chronic illnesses, including
hypertension, diabetes and HIV/AIDS. Within the young
adults age group information access by use of Short
Messaging Services (SMS) becomes particularly appealing.
In this regard, it is proposed to provide access to carefully
screened information on HIV/AIDS within the context of
frequently asked questions (FAQ) system. However,
automating SMS-based information search and retrieval
poses significant challenges because of the inherent noise
in SMS communications. In the paper, a special corpus of
SMS messages was collected based on a standardised
question-answer collection. The SMS messages were then
analysed, transcribed and classified, with the aim of
building a dictionary of SMS-speak to English
translations, with reference to HIV/AIDS
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