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Influences of agents with a self-reputation awareness component in an evolutionary spatial IPD game.

ABSTRACT: Iterated prisoner's dilemma (IPD) researchers have shown that strong positive reputations plus an efficient reputation evaluation system encourages both sides to pursue long-term collaboration and to avoid falling into mutual defection cycles. In agent-based environments with reliable reputation rating systems, agents interested in maximizing their private interests must show concern for other agents as well as their own self-reputations--an important capability that standard IPD game agents lack. Here we present a novel learning agent model possessing self-reputation awareness. Agents in our proposed model are capable of evaluating self-behaviors based on a mix of public and private interest considerations, and of testing various solutions aimed at meeting social standards. Simulation results indicate multiple outcomes from the addition of a small percentage of self-reputation awareness agents: faster cooperation, faster movement toward stability in an agent society, a higher level of public interest in the agent society, the resolution of common conflicts between public and private interests, and a lower potential for rational individual behavior to transform into irrational group behavior.

SUBMITTER: Huang CY

PROVIDER: S-EPMC4063756 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Influences of agents with a self-reputation awareness component in an evolutionary spatial IPD game.

Huang Chung-Yuan CY Lee Chun-Liang CL

PloS one 20140619 6

Iterated prisoner's dilemma (IPD) researchers have shown that strong positive reputations plus an efficient reputation evaluation system encourages both sides to pursue long-term collaboration and to avoid falling into mutual defection cycles. In agent-based environments with reliable reputation rating systems, agents interested in maximizing their private interests must show concern for other agents as well as their own self-reputations--an important capability that standard IPD game agents lac ...[more]

PMID: 24945966

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Project description:BACKGROUND:Online reputation management (ORM) is an emerging practice strategy that emphasizes the systematic and proactive monitoring of online reviews relating to one's professional reputation. OBJECTIVE:We developed this survey project to assess whether radiation oncologists are aware of ORM and how it is utilized in their practices. We hypothesized that ORM is largely unknown by most practicing radiation oncologists and that little time is spent actively managing their reputations. METHODS:An online survey was submitted to 1222 radiation oncologists using the Qualtrics research platform. Physician emails were gathered from the American Society for Radiation Oncology member directory. A total of 85 physicians initiated the survey, whereas 76 physicians completed more than or equal to 94% (15/16) of the survey questions and were subsequently used in our analyses. The survey consisted of 15 questions querying practice demographics, patient satisfaction determination, ORM understanding, and activities to address ORM and 1 question for physicians to opt-in to a US $50 Amazon gift card raffle. The survey data were summarized using a frequency table, and data were analyzed using the Chi-square test, Fisher exact test, and Spearman correlation coefficients. RESULTS:We calculated a 7% (85/1222) response rate for our survey, with a completion rate of 89% (76/85). A majority of respondents (97%, 74/76) endorsed being somewhat or strongly concerned about patient satisfaction (P<.001). However, 58% (44/76) of respondents reported spending 0 hours per week reviewing or managing their online reputation and 39% (30/76) reported spending less than 1 hour per week (P<.001). A majority of physicians (58%, 44/76) endorsed no familiarity with ORM (P<.001) and 70% (53/76) did not actively manage their online reputation (P<.001). Although 83% (63/76) of respondents strongly or somewhat believed that patients read online reviews (P<.001), 57% (43/76) of respondents did not check their online reviews (P=.25) and 80% (61/76) endorsed never responding to online reviews (P<.001). Moreover, 58% (44/76) of the respondents strongly or somewhat supported the idea of managing their online reputation going forward (P=.001). In addition, 11 out of the 28 pairs of questions asked in our correlation studies reached statistical significance. Degree of concern for patient satisfaction and the notion of managing one's ORM going forward were the 2 most frequently correlated topics of statistical significance in our analyses. CONCLUSIONS:ORM is presently under-recognized in radiation oncology. Although most practitioners are concerned about patient satisfaction, little effort is directed toward the internet on this matter. ORM offers an area of practice improvement for many practicing radiation oncologists.

Project description:BackgroundHealthcare organizations are moving their primary care teams out of private offices into shared workspaces for many reasons, including teamwork improvement and cost reduction.ObjectiveIdentify the specific aspects of layout and design that enable two fundamental processes of high-functioning teams: communication and situation awareness.DesignThis was a multi-method study employing qualitative interviews, floor plan analysis, observations, behavior mapping, and surveys.ParticipantsTwo primary care clinics in a large, integrated healthcare system in the upper Midwest, with Clinic S in a suburban location and Clinic A in a rural setting. In the two clinics, a total of 36 staff members were interviewed, 57 (66% response rate) staff members were surveyed, and 2013 individual-points were recorded during 63 behavior mapping observations.Main measuresCommunication encounters, team members' perception of the environment and teamwork, visibility, distance, functional pathways, and self-reported mode and frequency of staff communication.Key resultsObservations, interviews, and surveys identified environmental factors that predict staff awareness and communication patterns. Visibility impacts situation awareness. Frequency of face-to-face communication increases with visibility and proximity between workstations (e.g., Clinic A nurses' intra-role communication without workstation proximity vs inter-role communication with workstation proximity: 22.6% [11.4, 33.9] vs 77.4% [66.1, 88.6], p = 0.001) and with staff members' functional paths. Visual exposure to patients predicts staff's concerns about their communication (Clinic S: 2.29 ± 0.81 vs Clinic A: 3.20 ± 0.84, p < 0.001).ConclusionsDesign and layout of team spaces have important influences on the way that team members work together. The organizational goals of the healthcare system, particularly which staff members need to work together most frequently, should drive the specific design solution.

Project description:In plants, most competition is resource competition, where one plant simply preempts the resources away from its neighbors. Interference competition, as the name implies, is a form of direct interference to prevent resource access. Interference competition is common among animals that can physically fight, but in plants, one of the main mechanisms of interference competition is allelopathy. Allelopathic plants release cytotoxic chemicals into the environment which can increase their ability to compete with surrounding organisms for limited resources. The circumstances and conditions favoring the development and maintenance of allelochemicals, however, are not well understood. Particularly, despite the obvious benefits of allelopathy, current data suggest it seems to have only rarely evolved. To gain insight into the cost and benefit of allelopathy, we have developed a 2×2 matrix game to model the interaction between plants that produce allelochemicals and plants that do not. Production of an allelochemical introduces novel cost associated with both synthesis and detoxifying a toxic chemical but may also convey a competitive advantage. A plant that does not produce an allelochemical will suffer the cost of encountering one. Our model predicts three cases in which the evolutionarily stable strategies are different. In the first, the nonallelopathic plant is a stronger competitor, and not producing allelochemicals is the evolutionarily stable strategy. In the second, the allelopathic plant is the better competitor, and production of allelochemicals is the more beneficial strategy. In the last case, neither is the evolutionarily stable strategy. Instead, there are alternating stable states, depending on whether the allelopathic or nonallelopathic plant arrived first. The generated model reveals circumstances leading to the evolution of allelochemicals and sheds light on utilizing allelochemicals as part of weed management strategies. In particular, the wide region of alternative stable states in most parameterizations, combined with the fact that the absence of allelopathy is likely the ancestral state, provides an elegant answer to the question of why allelopathy seems to rarely evolve despite its obvious benefits. Allelopathic plants can indeed outcompete nonallelopathic plants, but this benefit is simply not great enough to allow them to go to fixation and spread through the population. Thus, most populations would remain purely nonallelopathic.

Dataset Information

Influences of agents with a self-reputation awareness component in an evolutionary spatial IPD game.

Publications

Influences of agents with a self-reputation awareness component in an evolutionary spatial IPD game.

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