Harvest : a collaborative system for distributed retrieval of social data
In recent years, social network providers has become one of the largest industries in the world. These networks created a new arena for sharing information over the Internet, and thus changed the way people interact with each other. Hundreds of millions of social network users are updating statuses and sending messages to each other every day. These interactions produce vast amounts of social data. This data is the core of the social network providers business model, and it is sold to large companies to perform personalized advertisement, brand monitoring and viral marketing. The price of this data can be intimidating, and some might be unable or unwilling to pay for it because of its price. If the data was freely available, research that could benefit from this data would be derived more freely, leading to new knowledge. This thesis presents Harvest, a collaborative system for retrieving social data. Harvest is a peer-to-peer system consisting of contributing social network users, inspired by public resource computing. Harvest shares social network account-bound resources to retrieve large social data sets. Contribution is achieved by running an application on the contributors computer like other public resource computing system such as the @home systems. The system implements retrieval of data from Twitter. Experiments on real Twitter data show that the system scales with increased contribution. The data retrieval bandwidth per contributing user is quite low, and the number of contributors needed to achieve a considerably large data retrieval bandwidth is high, but there are no associated financial costs with the system. Harvest would benefit greatly by retrieving data from more sources as this would increase its data retrieval bandwidth, in addition to offer more abundant data.
ForlagUniversitetet i Tromsø
University of Tromsø
Følgende lisensfil er knyttet til denne innførselen:
Viser innførsler relatert til tittel, forfatter og emneord.
Marzullo, Keith; Lauvset, Kåre J.; Johansen, Dag (Research report; Forskningsrapport, 2000-03-02)Distributed systems are becoming harder to manage, in part because the uses we put to distributed systems are rapidly changing. Hence, the software used to manage a distributed system needs to be flexible enough to accommodate these new uses. It also has to be secure enough to not allow unauthorized changes to be made to the system. We present a library and a kernel that supports the management ...
Holm, Ragnhild Kosmo (Master thesis; Mastergradsoppgave, 2015-06-01)Nexans Rognan is a cable manufacturer located in Nordland County. Each new cable order have a set of requirements provided by the customer. The cable specifications change in terms of characteristics of fibre optical elements, type and quality of cable armouring and dimension and amounts of electrical conductors. Due to the variety in different cables produced, they also need a wide array of ...
Autonomous weapon systems that decide whom to kill. How international humanitarian law and international human rights law regulate the development and use of offensive autonomous weapon systems during international armed conflicts Mortensen, Erika Steinholt (Master thesis; Mastergradsoppgave, 2016-05-03)The thesis examines the following questions: 1) How autonomous weapon systems (AWS) should be defined and whether there are any legal restraints on the technology, hereunder the notion “meaningful human control.” 2) How international human rights law (IHRL) may apply during an international armed conflict (IAC). 3) Whether IHRL may apply extraterritorially through the use of AWS, with a special ...