• Title/Summary/Keyword: Completeness estimation

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An Overview of Time Estimation in the Appraisal of Completeness for Software

  • Kim, Yukyong
    • Journal of Software Assessment and Valuation
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    • v.16 no.1
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    • pp.21-26
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    • 2020
  • The completeness appraisal of software is performed in various forms, such as assessing the completion level in the development process, calculating the defect rate, estimating the development cost, and calculating the redevelopment cost. Along with this, the problem that is often dealt with is estimation of the development time. Even in a dispute over completeness due to delays in software development, issues of calculating an appropriate development time required to develop a delivery software or a development time required for change requests are often included in the appraisal request. In this paper, we introduce the procedure and method for estimating the appropriate project time of software development so that the appraiser can be applied to the appraisal work for determining the completeness. The method is based on the manual for calculating the appropriate project period of software development project.

Estimating the Completeness of Lung Cancer Registry in Ardabil, Iran with a Three-Source Capture-Recapture Method

  • Khodadost, Mahmoud;Mosavi-Jarrahi, Alireza;Hashemian, Seyed Sepehr;Sarvi, Fatemeh;Maajani, Khadije;Moradpour, Farhad;Khatibi, Seyed Reza;Amini, Hossein
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.sup3
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    • pp.225-229
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    • 2016
  • Cancer registration is an important component of a comprehensive cancer control program, providing timely data and information for research and administrative use. Capture-recapture methods have been used as tools to investigate completeness of cancer registry data. This study aimed to estimate the completeness of lung cancer cases registered in Ardabil Population Based Cancer Registry (APBCR) with a three-source capture-recapture method. Data for all new cases of lung cancer reported by three sources (pathology reports, death certificates, and medical records) to APBCR for 2006 and 2008 were obtained. Duplicate cases shared among the three sources were identified based on similarity of first name, last name and father's names. A log-linear model was used to estimate number of missed cases and to control for dependency among sources. A total of 218 new cases of lung cancer was reported by three sources after removing duplicates. The estimated completeness calculated by log-linear method was 26.4 for 2006 and 27.1 for 2008. The completeness differed according to gender. In men, the completeness was 26.0% for 2006 and 28.1 for 2008. In women, the completeness was 36.5% for 2006 and 46.9 for 2008. In conclusion, none of the three sources can be considered as a reliable source for accurate cancer incidence estimation.

CRITICAL FACTORS FOR ASSESSMENT OF BIM BASED QUANTITY-TAKE OFF

  • Seong-Ah Kim;Chang-Hee Lee ;Sangyoon Chin;Cheolho Choi
    • International conference on construction engineering and project management
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    • 2011.02a
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    • pp.7-11
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    • 2011
  • Quantity take-off (QT) is one of the most important tasks for determining the total cost of a construction project, and it requires accuracy and reliability for the result. Accuracy and reliability in BIM-based QT are also required to assure the completeness of the result. However, there has been no basis to measure the completeness of the BIM-based QT result. As BIM is increasingly being adopted in the construction industry with a wide variety of purposes, it becomes more important to have a method to improve the completeness of BIM-based QT and criteria to measure it. This research focuses on the hypothesis that the completeness of BIM-based QT relies on the accuracy and reliability of BIM and the BIM-based QT process. As a basic research to determine the completeness of BIM-based QT, this research analyzes and derives factors that affect the completeness of BIM-based QT.

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Estimation of Completeness of Cancer Registration for Patients Referred to Shiraz Selected Centers through a Two Source Capture Re-capture Method, 2009 Data

  • Sharifian, Roxana;SedaghatNia, Mohammad Hossein;Nematolahi, Mohtram;Zare, Najaf;Barzegari, Saeed
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.13
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    • pp.5549-5556
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    • 2015
  • Background: Cancer has important social consequences with cancer registration as the basis of moving towards prevention. The present study aimed to estimate the completeness of registration of the ten most common cancers in patients referred to selected hospitals in Shiraz, Iran by using capture-recapture method. Materials and Methods: This cross-sectional analytical study was performed in 2014 based on the data of 2009, on a total of 4,388 registered cancer patients. After cleaning data from two sources, using capture-recapture common findings were identified. Then, the percentage of the completeness of cancer registration was estimated using Chapman and Chao methods. Finally, the effects of demographic and treatment variables on the completeness of cancer registration were investigated. Results: The results showed that the percentages of completeness of cancer registration in the selected hospitals of Shiraz were 58.6% and 58.4%, and influenced by different variables. The age group between 40-49 years old was the highest represented and for the age group under 20 years old was the lowest for cancer registration. Breast cancer had the highest registration level and after that, thyroid and lung cancers, while colorectal cancer had the lowest registration level. Conclusions: According to the results, the number of cancers registered was very few and it seems that factors like inadequate knowledge of some doctors, imprecise diagnosis about the types of cancer, incorrectly filled out medical documents, and lack of sufficient accuracy in recording data on the computer cause errors and defects in cancer registration. This suggests a necessity to educate and teach doctors and other medical workers about the methods of documenting information related to cancer and also conduct additional measures to improve the cancer registration system.

An Evaluation System to Determine the Completeness of a Space Map Obtained by Visual SLAM (Visual SLAM을 통해 획득한 공간 지도의 완성도 평가 시스템)

  • Kim, Han Sol;Kam, Jae Won;Hwang, Sung Soo
    • Journal of Korea Multimedia Society
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    • v.22 no.4
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    • pp.417-423
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    • 2019
  • This paper presents an evaluation system to determine the completeness of a space map obtained by a visual SLAM(Simultaneous Localization And Mapping) algorithm. The proposed system consists of three parts. First, the proposed system detects the occurrence of loop closing to confirm that users acquired the information from all directions. Thereafter, the acquired map is divided with regular intervals and is verified whether each area has enough map points to successfully estimate users' position. Finally, to check the effectiveness of each map point, the system checks whether the map points are identifiable even at the location where there is a large distance difference from the acquisition position. Experimental results show that space maps whose completeness is proven by the proposed system has higher stability and accuracy in terms of position estimation than other maps that are not proven.

Completeness Estimation of the Population-based Cancer Registration with Capture-Recapture Methods (Capture-recapture 방법을 이용한 광주광역시 지역암등록 자료의 완전성 추정)

  • Kweon, Sun-Seog;Kim, Sang-Yong;Park, Kyeong-Soo;Sohn, Seok-Joon;Choi, Jin-Su;Im, Jeong-Soo
    • Journal of Preventive Medicine and Public Health
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    • v.33 no.1
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    • pp.31-35
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    • 2000
  • Objectives : This study aimed to estimate the completeness of cancer registration with Capture-recapture method. Methods : The study was conducted in the population based cancer registry of Kwangju, Korea, for which there are three main sources of notification: reports by Korean Central Cancer Registry, reports by pathology data, and the others reports by radiology data, death certificates, etc. The defined cases in three sources were matched by 13 digits Resident Register Number. To derive an estimates, log-linear models were applicated. Results : Overall completeness was estimated to be around 93%. There was some variation with age(consistently high levels below age group 60-74 years, a minimum of 88.6% above 75 years). Among the most common cancer sites, estimates of completeness were highest for thyroid cancer(97.1%), while lower estimates of completeness were derived for stomach cancer(92.3%), liver cancer(92.6%). Conclusions : Careful application of Capture-recapture method may provide an alternative to traditional approaches for estimating the completeness of cancer registration in Kwangju city.

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Myocardial Perfusion Scoring System in Coronary Bypass Grafting - Estimation of Completeness - (관상동맥우회술 환자에서의 심근관류점수제에 대한 연구: 완전혈관재생술의 평가)

  • Chae, Hurn;Baek,Wan-Ki;Ahn, Hyuk;Kim, Yong-Jin;Rho, Joon-Ryang;Kim, Chong-Whan;Suh, Kyung-Phill
    • Journal of Chest Surgery
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    • v.24 no.9
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    • pp.881-889
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    • 1991
  • The ideal goal of the coronary artery bypass surgery is complete revascularization. To estimate the numerical degree of completeness of revascularization, the following formula was used in 50 patients having aorta-coronary bypass grafting for the treatment of unstable angina. myocardial perfusion score of revascularized area Degree of Completeness = ----------------------------------------------------------------------------- x100[%] preoperative myocardial perfusion score Randomized patients who underwent revascularization procedures in 19Hb were compared with the patients who received similar elective operation each year from 1988 through 1991. To obtain these data, the patients aged 38 ~ 75[mean 54$\pm$9.1years], composed of 31 males and 19 females were randomly sampled. The number of grafts per patient increased from 2.30 in 1986, to 3.07 in 1988 - 89, to 3.21 in 1990, and to 3.50 in 1991. [0.05 The degree of completeness improved from 75.4% to 81.4%, 91.6% and 88.6% respectively. It improved significantly in the last two years, [P<0.05, Mann-Whitney U test] At a follow-up of three months, 90 percent[45/50] of patients remained angina, free, 6 percent[3/50] had residual angina, and 4 percent[2/50] died. The last two patients degree of completeness corresponded to 43% and 30% respectively As a conclusion, the degree of completeness seems to improve year by year, and to have close relationship with the clinical results.

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Completeness Estimation of the Korean Medical Insurance Data in Childhood Asthma : Using Capture-Recapture Method (소아 천식을 통해서 본 의료보험 상병 자료의 완전성 추정 : Capture-Recapture 분석방법의 적용)

  • Ha, M.N.;Kwon, H.J.;Kang, D.H.;Cho, S.H.;Yoo, K.Y.;Joo, Y.S.;Sung, J.H.;Kang, J.W.;Kim, D.S.;Lee, S.I.
    • Journal of Preventive Medicine and Public Health
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    • v.30 no.2 s.57
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    • pp.428-436
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    • 1997
  • Objectives : The purpose of this paper is to estimate the completeness of the Korean Medical Insurance Data in childhood asthma. Methods : Capture-recapture method was used to estimate the prevalence of childhood asthma and case ascertainment rate(completeness) of Korean Medical Insurance Data using two source model, 'Korean Medical Insurance Committee Data (KMICD)' and 'Nationwide Study of Asthma and Allergies in Korean Children'. The asthma cases were restricted to those who were born from 1981 to 1989 and were identified by their Resident Register Number. Asthma cases in Korean Medical Insurance Data were defined as cases coded by ICD-9 493 and ICD-10 J45. In 'Nationwide Study of Asthma and Allergies in Korean Children', asthma cases were defined as the children who had been diagnosed asthma and had experienced symptoms of asthma during the past 12 months. The defined cases in two data sources were matched by 13 digits Resident Register Number. The numbers of matched patients in two data sources were 245 of 32,825 eligible total subjects. Chapman and Wittes' nearly unbiased estimation was used for capture-recapture analysis of two data sources. Results : Observed prevalence rate of childhood asthma was 5.3% and estimated prevalence rate by capture-recapture analysis was 11.6%. The highest prevalence rate was observed in 6-7 age group and the older the rate decreased. The completeness (the proportion of cases ascertained by KMICD to the total observed cases by two data sources) was 20.6%, and ranged form 10.8% to 28.8% by area. Conclusions : Invalid diagnosis of cases might overestimate the prevalence of child-hood asthma and might underestimate the completeness of Korean Medical Insurance Committee Data in this study.

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Estimating the Completeness of Gastric Cancer Registration in Ardabil/Iran by a Capture-Recapture Method using Population-Based Cancer Registry Data

  • Khodadost, Mahmoud;Yavari, Parvin;Babaei, Masoud;Mosavi-Jarrahi, Alireza;Sarvi, Fatemeh;Mansori, Kamyar;Khodadost, Behnam
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.5
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    • pp.1981-1986
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    • 2015
  • Background: Knowledge of cancer incidences is essential for cancer prevention and control programs. Capture-recapture methods have been recommended for reducing bias and increasing the accuracy of cancer incidence estimations. This study aimed to estimate the completeness of gastric cancer registration by the capture-recapture method based on Ardabil population-based cancer registry data. Materials and Methods: All new cases of gastric cancer reported by three sources, pathology reports, death certificates and medical records that reported to Ardabil population-based cancer registry in 2006 and 2008 were enrolled in the study. The duplicate cases based on the similarity of first name, surname and fathers names were identified between sources. The estimated number of gastric cancers was calculated by the log-linear method using Stata 12 software. Results: A total of 857 new cases of gastric cancer were reported from three sources. After removing duplicates, the reported incidence rates for the years 2006 and 2008 were 35.3 and 32.5 per 100,000 population, respectively. The estimated completeness calculated by log-linear method for these years was 36.7 and 36.0, respectively. Conclusions: These results indicate that none of the sources of pathology reports, death certificates and medical records individually or collectively fully cover the incident cases of gastric cancer. We can obtain more accurate estimates of incidence rates using the capture-recapture method.

Estimation of b-value for Earthquakes Data Recorded on KSRS (KSRS 관측자료에 의한 b-값 평가)

  • 신진수;강익범;김근영
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2002.09a
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    • pp.28-34
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    • 2002
  • The b-value in the magnitude-frequency relationship logN(m) = $\alpha$ - bmwhere N(m) is the number of earthquakes exceeding magnitude m, is important seismicity parameter In hazard analysis. Estimation of the b-value for earthquake data observed on KSRS array network is done employing the maximum likelihood technique. Assuming the whole Korea Peninsula as a single seismic source area, the b-value is computed at 0.9. The estimation for KMA earthquake data is also similar to that. Since estimate is a function of minimum magnitude, we can inspect the completeness of earthquake catalog in the fitting process of b-value. KSRS and KMA data lists are probably incomplete for magnitudes less than 2.0 and 3.0, respectively. Examples from probabilistic seismic hazard assessment calculated for a range of b-value show that the small change of b-value has seriously effect on the prediction of ground motion.

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