Capítulos de libros

Permanent URI for this collection

https://repositorio.uc.cl/handle/11534/22991

Browse

Browsing Capítulos de libros by browse.metadata.categoria "Ciencias de la computación"

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    A Network Approach to the Formation of Self-assembled Teams
    (2020) Ichhaporia, R.; Gomez Zara, Diego Alonso; DeChurch, L.; Contractor, N.
    Which individuals in a network make the most appealing teammates? Which invitations are most likely to be accepted? And which are most likely to be rejected? This study explores the factors that are most likely to explain the selection, acceptance, and rejection of invitations in self-assembling teams. We conducted a field study with 780 participants using an online platform that enables people to form teams. Participants completed an initial survey assessing traits, relationships, and skills. Next, they searched for and invited others to join a team. Recipients could then accept, reject, or ignore invitations. Using Exponential Random Graph Models (ERGMs), we studied how traits and social networks influence teammate choices. Our results demonstrated that (a) agreeable leaders with high psychological collectivism send invitations most frequently, (b) previous collaborators, leaders, competent workers, females, and younger individuals receive the most invitations, and (c) rejections are concentrated in the hands of a few. © 2020, Springer Nature Switzerland AG.
  • Thumbnail Image
    Item
    No Agreement Without Loss: Learning and Social Choice in Peer Review
    (2023) Barcelo Baeza, Pablo; Duarte, Mauricio; Rojas González, Luis Cristóbal; Steifer, Tomasz
    In peer review systems, reviewers are often asked toevaluate various features of submissions, such as technical qualityor novelty. A score is given to each of the predefined features andbased on these the reviewer has to provide an overall quantitativerecommendation. It may be assumed that each reviewer has her ownmapping from the set of features to a recommendation, and thatdifferent reviewers have different mappings in mind. This introducesan element of arbitrariness known as commensuration bias. In thispaper we discuss a framework, introduced by Noothigattu, Shah andProcaccia, and then applied by the organizers of the AAAI 2022conference. Noothigattu, Shah and Procaccia proposed to aggregatereviewer’s mapping by minimizing certain loss functions, and studiedaxiomatic properties of this approach, in the sense of social choicetheory. We challenge several of the results and assumptions used intheir work and report a number of negative results. On the one hand,we study a trade-off between some of the axioms proposed and theability of the method to properly capture agreements of the majorityof reviewers. On the other hand, we show that dropping a certainunrealistic assumption has dramatic effects, including causing themethod to be discontinuous.
  • Thumbnail Image
    Item
    Western Patagonia: From Frontiers of Exploration to the Commodification of Nature
    (Springer, 2023) Salazar Burrows, Alejandro Francisco; Matus, Claudia; Olea Peñaloza, Jorge Manuel
    Western Patagonia is a territory whose historical trajectory has beendescribed in terms of the harshness of its colonization processes and the constantstruggle to domesticate nature. These ideas are still in use today. This chapterrefects on two major transformations: frst, the historical and environmental confguration of western Patagonia, including the colonization processes and their continuity up to the present day, and the continuities and ruptures of economic activities,mainly tourism. Second, it describes the current occupation strategies, mainlyfocused on the touristifcation of western Patagonia, understood as a process ofcommodifcation of nature. As a result, we discuss the impact of normative notionsof nature and culture in the production of narratives about western Patagonia, whichconstitute the basis of the practices of the contemporary tourism industry. At thesame time, we identify and consider that the previous production and use of data about the territory provide a particular reality in which the defnition of both socialand natural aspects of the territory must be considered.