• 제목/요약/키워드: ranking scales

검색결과 9건 처리시간 0.025초

조사연구에서 순위절차를 이용한 항목순위결정에 관한 연구 (Ordering Items from Ranking Procedures in Survey Research)

  • 허순영;장덕준;신재경
    • 한국조사연구학회지:조사연구
    • /
    • 제9권2호
    • /
    • pp.29-49
    • /
    • 2008
  • 설문조사에서 어떤 주제와 관련된 여러 항목들을 제시하고 응답자들의 가치 기준에 따라 응답하게 한 후, 그 응답들을 종합하여 항목들 간의 순위를 결정할 목적으로 설문을 제시하는 경우가 많이 있다. 이 경우 가장 일반적으로 사용하는 것이 순위척도(ranking scales)와 평정 척도(rating scales)이다. 순위척도 중에서도 주어진 항목들 중 가장 중요한 것을 하나 이상 선택하게 하는 축소순위척도(reduced ranking scales)가 많이 사용된다. 그러나 실제로 항목간의 순위를 결정하는 과정에서 순위응답을 고려하는 경우는 극히 드물다. 본 연구는 순위절차(ranking procedures)에 의한 설문응답에서, 순위응답을 고려하여 항목순위를 결정하는 방법들을 고찰하였다. 또 몇 가지 사례를 통해 그 방법들을 비교 분석하였으며, 이 과정에서 순위척도를 조건부평정척도로 간주하였다. 축소순위척도에 의한 항목순위결정의 경우, 1순위와 2순위 그리고 3순위에 각각 2와 1 그리고 0의 값을 부여함으로써 1순위의 응답비율을 희석하지 않으면서 2순위 응답비율을 적절히 수용하여 보다 합리적인 항목순위를 결정할 수 있음을 확인할 수 있었다.

  • PDF

Multi-scale Diffusion-based Salient Object Detection with Background and Objectness Seeds

  • Yang, Sai;Liu, Fan;Chen, Juan;Xiao, Dibo;Zhu, Hairong
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • 제12권10호
    • /
    • pp.4976-4994
    • /
    • 2018
  • The diffusion-based salient object detection methods have shown excellent detection results and more efficient computation in recent years. However, the current diffusion-based salient object detection methods still have disadvantage of detecting the object appearing at the image boundaries and different scales. To address the above mentioned issues, this paper proposes a multi-scale diffusion-based salient object detection algorithm with background and objectness seeds. In specific, the image is firstly over-segmented at several scales. Secondly, the background and objectness saliency of each superpixel is then calculated and fused in each scale. Thirdly, manifold ranking method is chosen to propagate the Bayessian fusion of background and objectness saliency to the whole image. Finally, the pixel-level saliency map is constructed by weighted summation of saliency values under different scales. We evaluate our salient object detection algorithm with other 24 state-of-the-art methods on four public benchmark datasets, i.e., ASD, SED1, SED2 and SOD. The results show that the proposed method performs favorably against 24 state-of-the-art salient object detection approaches in term of popular measures of PR curve and F-measure. And the visual comparison results also show that our method highlights the salient objects more effectively.

정보 검색 과제별 동적 검색 랭킹 모델 구현 및 검증: 사용자 중심 적합성 판단 모형 평가를 중심으로 (Implementation and Verification of Dynamic Search Ranking Model for Information Search Tasks: The Evaluation of Users' Relevance Judgement Model)

  • 박정아;손영우
    • 감성과학
    • /
    • 제15권3호
    • /
    • pp.367-380
    • /
    • 2012
  • 본 연구는 정보 검색 과제별 주요 적합성 판단 기준을 실제 정보 검색 시스템으로 구현해 보고 사용자 평가를 통해 그 효과를 검증해 보고자 하였다. 이를 위해, 사용자 적합성 판단 기준들을 정보 검색 시스템에서 적합성을 결정하는 검색 랭킹 모델의 랭킹 요소들로 적용하였다. 그리고 정보 검색 과제별 차이가 있는 동적 검색 랭킹 모델과 차이가 없는 정적 검색 랭킹 모델을 시스템으로 구현하였고, 이에 대한 사용자 평가를 진행하여 비교해 보았다. 총 45명의 참가자가 실험에 참여하였고, 정보 검색 과제별 차이가 있는 동적 검색 랭킹 모델과 차이가 없는 정적 검색 랭킹 모델이 적용된 각각의 검색 시스템에서 3개의 검색 과제를 수행하였다. 3개의 정보 검색 과제로는 사실 검색 과제, 문제 해결 검색 과제, 의사 결정 검색 과제가 사용되었다. 각 참가자는 검색 결과 첫 페이지 상위 5 개의 검색 결과에 대해 적합성 정도를 7 점 척도로 평가하였다. 그 결과, 사용자는 전반적으로 모든 검색어에 동일하게 반응하는 정적 검색 랭킹 모델을 적용한 시스템보다 정보 검색 과제별로 사용자 적합성 판단기준의 변화에 따라 랭킹 요소 가중치를 달리한 동적 검색 랭킹 모델을 더 높이 평가하는 것을 확인할 수 있었다. 본 연구는 이를 통해, 정보 검색 과제를 고려한 정보 검색 시스템 디자인의 필요성과 함께, 사용자 중심 적합성 판단 모형 연구 결과를 실제 정보 검색 시스템으로 구현하여 평가함으로써 사용자 중심 적합성 연구 결과의 타당성을 검증하였다는 점, 그리고 사용자 연구 접목을 통한 시스템 개선의 중요성을 강조하였다는 점에서 의의를 가진다.

  • PDF

A two-stage cascaded foreground seeds generation for parametric min-cuts

  • Li, Shao-Mei;Zhu, Jun-Guang;Gao, Chao;Li, Chun-Wei
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • 제10권11호
    • /
    • pp.5563-5582
    • /
    • 2016
  • Parametric min-cuts is an object proposal algorithm, which can be used for accurate image segmentation. In parametric min-cuts, foreground seeds generation plays an important role since the number and quality of foreground seeds have great effect on its efficiency and accuracy. To improve the performance of parametric min-cuts, this paper proposes a new framework for foreground seeds generation. First, to increase the odds of finding objects, saliency detection at multiple scales is used to generate a large set of diverse candidate seeds. Second, to further select good-quality seeds, a two-stage cascaded ranking classifier is used to filter and rank the candidates based on their appearance features. Experimental results show that parametric min-cuts using our seeding strategy can obtain a relative small pool of proposals with high accuracy.

THE EVOLUTION OF THE GALACTIC GLOBULAR CLUSTERS.: I. METAL ABUNDANCE CALIBRATIONS

  • Lee, See-Woo;Park, Nam-Kyu
    • 천문학회지
    • /
    • 제17권2호
    • /
    • pp.69-103
    • /
    • 1984
  • Five different calibrations of metal abundances of globular clusters are examined and these are compared with metallicity ranking parameters such as $(Sp)_c$, . Q39 and IR-indices. Except for the calibration $[Fe/H]_H$ by the high dispersion echelle analysis. the other calibration scales are correlated with the morphological parameters of red giant branch. In the $[Fe/H]_H$-scale. the clusters later than ${\sim}F8$ have nearly a constant metal abundance. $[Fe/H]_H{\simeq}-1.05$, regradless of morphological characteristics of horizontal branch and red giant branch. By the two fundamental calibration scales of $[Fe/H]_L$ (derived by the low dispersion analysis) and $[Fe/H]_{{\Delta}s}$ (derived by the spectral analysis of RR Lyrae stars). the globular clusters are divided into the halo clusters with [Fe/H]<-1.0 and the disk clusters confined within the galactocentric distance ${\tau}_G=10\;kpc$ and galactic plane distance |z|=3 kpc. In this case the abundance gradient is given by d[Fe/H]/$dr_G{\approx}-0.05\;kpc^{-1}$ and d[Fe/H]/$d|z|{\simeq}-0.08\;kpc^{-1}$ within ${\tau}_G=20\;kpc$ and |z|=10 kpc, respectively. According to these characteristics of the spatial distribution of globular clusters. the chemical evolution of the galactic globular clusters can be accounted for by the two-zone (disk-halo) slow collapse model when the $[Fe/H]_L$-or $[Fe/H]_{{\Delta}s}$-scale is applied. In the case of $[Fe/H]_H$-scale, the one-zone fast collapse model is preferred for the evolution of globular clusters.

  • PDF

수도작 친환경농법 수용농가의 경영실태 및 요인분석 (An Analysis of Management Factors for Environmentally-Friendly Rice's Production Farms)

  • 김동완;장치진;최동칠;유찬주
    • 한국유기농업학회지
    • /
    • 제14권3호
    • /
    • pp.251-266
    • /
    • 2006
  • This study was surveyed and analyzed in 2005 year for environmentally-friendly rice's production 78 farmers in korea. The major results was as follows: The average age of farmers were 54 years old, the experiences of environmentally-friendly rice's production farms was 7.4 years, the cultivated scales of environmentally-friendly rice's production was 3.4ha. The 74%'s Farmers of all unified rice's breeds for rice's production of high-grade in quality, the ranking of rice's breeds selection were the high-grade rice's breeds of government>japan rice's breeds. The control of damage by blight and insects were needed environmentally-friendly control, the endured study of this control were very important. To cut down cost of the environmentally-friendly rice for income security of farmers and sustenance of farming will. To receive reasonable price of environmentally-friendly rice, the brand image were raised to consumers, the variety and miniaturization of rice packaging unit were needed in view of consumers. In addition to must be campaigns of publicity through the press and event to consumers, were managed the exchange of rice goods and exchanged e-mail together consumers for the maintenance of confidence. To drive direct marketing between environmentally-friendly rice farmers and consumers through experiential marketing, to diversify the marketing channel. To strengthen public relations at regional level and relationship at the consumers.

  • PDF

수간호사가 활용하는 근무성적 평정에 관한 조사연구 (A Survey on Head Nurses' Perceptions and Performances on Staff Evaluation)

  • 김소인
    • 간호행정학회지
    • /
    • 제1권1호
    • /
    • pp.35-45
    • /
    • 1995
  • This study was designed and carried out to identify the methodologies of the staff evaluation used by the headnurses and their perception on the purpose of the evaluations, and to measure the degree and type of perceived purpose and the degree of implementation of staff evaluation principles into preactice. A hundred and eleven from four general hospitals with 600 beds and over were conveniently sampled. Data were gathered from August 20, through September 10, 1994 ; demographic data of respondents and 'methodologies used for staff evaluation' by questionaires, level of 'perceived purposes of staff evaluation' and level of implementation of the 'principles of staff evaluation into practice' by Likert-type rating scales developed by the researcher. Raw and percentile scores and means were calculated and data were processed further by t-tests and ANOVA. Results are as follows ; 1. Traditional methodlogies : checklists(90.1%) and ranking methods(45.9%) revealed to be the two mostly prefered and used methods. 2. Of the 20 item-descriptions of the 'purpose of staff evaluation': 10 'control, evaluative' and 10 'non-control, developmental' the first(mean=3.19) to the ninth(mean=2.74) in rank order revealed to be the 'control, evaluative purpose', while the tenth in rank order revealed to be the first among the 'non-control, evaluative' item(mean-1.57). 3. Level of purpose of staff evaluation perceived as 'control ; evaluative'(mean=43.76, S.D.=5.01) revealed to be significantly(t=-3.86, p<.05) highter than 'non-control ; developmental'(mean=40.65, S.D.=3.41). 4. Level of implementation of 'staff evaluation principle into practice' revealed to be moderately high(mean=2.40).

  • PDF

일부 간호학생의 여성성과 간호상과의 상관관계 (A Study for Relationship Between the Femininity and the Nursing Image of Nursing Students)

  • 성현란
    • 대한간호학회지
    • /
    • 제8권2호
    • /
    • pp.39-49
    • /
    • 1978
  • The present research set out to further validate the results that Stromborg (1976) obtained in which a correlation (r= .22, p < .001) was found between the femininity of woman nursing students and their image of nursing. In addition the experimenter set out to elucidate any possible differences in the image of nursing according to (a) religion, (b) the motivation for choosing nursing as well as, (c) the particular area in which the students hoped to work after graduating. The research was conducted by presenting questionnaire type scales including a femininity scale and a nursing image scale, to 301 graduating students attending 4 Three-year nursing schools located within Seoul from November 21st, 1978 to November 30th. The results: 1. There was clearly no relation between femininity and the image of nursing as such (r= .01, p > .43). But upon analyzing the results along five subdimensions of the nursing image variable it was discovered that : (a) if femininity is low, the nursing student tend to view the educational preparation for becoming a nurse in a more positive light (r= -.10, p < .05), and (b) if femininity is high, the students tend to perceive their social role with a positive frame of mind (r= .15, p < .005). 2. There was a significant difference found in the image of nursing as related to the religion of the nursing students, The means ranked as follows (high scores indicate a positive image of the nursing profession). Catholic > Protestant > no religion > Buddhist 3, The difference in the nursing image according to motivation for sellecting the profession emerged as quite significant (F=6.92, p < .001). The rank of the means when the subject group is divided along the dimension of motive is as follows (ranking begins with the most positive nursing image): (a) The profession itself seemed good; (b) after marriage one can do a social type of activity; (c) significant others’advice: (d) the profession matches their high school grade record; (e) it matches the economic situation of the student; (f)no particular reason for their choice: (g) it's easy to get a nursing job after graduation. 4. The particular area of nursing one intended to go into after graduation varied significantly in terms of the image of nursing (F=3.03, p < .005). The means when ranked starting with those having the most positive image of the profession: (a) nurses helping deliveries; (b) hospital nurses: (c) nursing education; (d) school nurses: (e) government nurse supervisors: (f)public health nurses: (g) (students not going into any profession); (h) (students not going into the nursing profession but into some other area).

  • PDF

인지부조화의 발생에서 문화 차이의 의미: 태도 중요도의 역할 (The Role of Attitude Importance in Cultural Variations of Cognitive Dissonance)

  • 윤상연;서신화;김현정;허태균
    • 한국심리학회지 : 문화 및 사회문제
    • /
    • 제19권1호
    • /
    • pp.69-86
    • /
    • 2013
  • 인지부조화가 집단주의 문화에서는 약하게 발생한다는 기존의 주장과 달리, 최근에는 집단주의 문화권에서도 타인과 관련된 상황이나 규범준수와 관련된 상황 등과 같은 조건이 주어지면 인지부조화가 강하게 발생한다는 것이 확인되었다. 하지만 이러한 문화적 차이를 설명하는 심리적 요인이나 기제는 아직 규명되지 않았기에, 본 연구에서는 태도의 한 속성인 중요도(importance)가 주요한 역할을 수행할 것이라는 가설을 검증하였다. 이를 위해 개인의 문화적 가치성향이나 태도 대상의 특성을 초월하여, 인지부조화와 태도변화에서 태도 중요도의 영향을 확인하였다. 60명의 대학생을 대상으로 실험을 진행하였으며, 실험 4주 전에 개인주의-집단주의 수준을 측정하였다. 이후 기존 연구들에서 문화적인 차이가 확인된 개인적 선택, 타인을 위한 선택, 규범적 선택의 상황에서 자유선택 패러다임(free-choice paradigm)을 사용한 실험을 통해 인지부조화를 측정하였다. 그리고 마지막으로 각 선택대안에 대한 태도의 중요도를 측정하였다. 분석결과에 따르면, 선택의 상황에 상관없이 태도변화가 발견되어 인지부조화는 개인의 문화적 가치성향보다 태도 중요도에 의해 영향을 받는 것으로 확인되었다. 그리고 인지부조화의 문화 차이에 대한 기존 연구에서의 실질적인 적용한계를 이해하기 위해 본 연구결과가 가지는 함의를 논의하였다.