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KOMBINASI MODEL PENYEKORAN ITEM RESPONSE THEORY PADA TES FORMAT CAMPURAN
Get PDFABSTRAK
Penelitian ini bertujuan untuk membandingkan tingkat presisi kombinasi
model Item Response Theory dalam estimasi parameter kemampuan peserta tes
pada tes format butir campuran. Kombinasi model yang digunakan dalam penelitian
ini adalah Multiple Choice Model dan Graded Response Model (MCM+GRM),
sebagai pembanding digunakan kombinasi 3 Parameter Logistic Model dan
Generalized Partial Credit Model (3PLM+GPCM). Penelitian ini juga melakukan
eksplorasi dengan membandingkan tingkat presisi hasil estimasi parameter
kemampuan yang dihasilkan dari kalibrasi model secara terpisah, yakni: 3PLM,
MCM, GPCM, dan GRM. Penelitian ini menggunakan respons dari 1704 siswa
Sekolah Menegah Pertama untuk tes format campuran dalam bidang matematika.
Tes digunakan terdiri dari butir format Multiple Choice sebanyak 30 butir dan
Constructed Response 5 butir. Kriteria tingkat presisi yang digunakan pada
penelitian ini adalah varians hasil estimasi. Pengujian hipotesis penelitian dilakukan
dengan Uji beda Varians (Uji F). Berdasarkan hasil analisis yang telah dilakukan
diperoleh kesimpulan bahwa kombinasi MCM+GRM menghasilkan tingkat presisi
yang lebih tinggi dibandingkan dengan 3PLM+GPCM, baik untuk kondisi kalibrasi
simultan maupun terpisah. Selain itu MCM+GRM juga menghasilkan nilai fungsi
informasi tes yang lebih tinggi dibandingkan dengan model-model lainnya. Hal ini
membuat MCM+GRM menjadi kombinasi model yang direkomendasikan dalam
mengestimasi parameter kemampuan peserta tes format butir campuran, khususnya
bidang matematika maupun bidang lain yang memiliki karakteristik serupa.
ABSTRACT
This study aims to compare the precision comparison of Item Response
Theory model items in ability estimation on mixed format tests. The combination of
models used in this study are the MultipleChoice Model and the Graded Response
Model (MCM+GRM), as a comparison used combination of 3 Parameter Logistic
Models and Generalized Partial Credit Model (3PLM + GPCM). This research
also explores by comparing the level of precision of the capability estimation results
generated from the calibration of the model separately, namely: 3PLM, MCM,
GPCM, and GRM. This study uses responses from 1704 Junior High School
students on mixed-format tests for mathematics. The test used consisted of 30 items
Multiple Choice (MC) and 5 items Constructed Response (CR). The criteria for the
level of precision used in this study is the estimated variance. The research
hypothesis testing was carried out by using the Variance Test (F Test). Based on
the results of the analysis it has been concluded that the combination of
MCM+GRM produces a higher level of precision compared to 3PLM + GPCM,
both for simultaneous and separate calibration conditions. In addition,
MCM+GRM also produces higher test information function scores compared to
other models. This makes MCM + GRM a combination of models that are
recommended in estimating the ability using mixed-format test participants,
especially in mathematics and other fields that have similar characteristic
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Desain dan Validasi Aplikasi Tes Literasi Matematika Berbasis Komputer dengan Pendekatan Item Response Theory
Get PDFPenelitian ini bertujuan mengembangkan aplikasi tes literasi matematika berbasis komputer dengan pendekatan item response theory yang teruji kelayakan dan keunggulannya. Jenis penelitian ini adalah Research and Development (R&D) dengan Model Bord and Gall. Pengumpulan data dilakukan melalui observasi, angket, dan tes literasi matematika pada level sekolah menengah pertama. Penelitian ini diawali dengan analisis kebutuhan terkait esensi aplikasi yang dikembangkan. Kemudian dilanjutkan dengan studi literatur untuk menemukan model pengembangan yang cocok untuk pengembangan aplikasi tes literasi matematika ini. Pengembangan aplikasi ini diintegrasikan dengan pendekatan Item Response Theory (IRT) untuk meningkatkan akurasi pada pengukuran kemampuan literasi matematika. Rancangan aplikasi yang dibuat kemudian divalidasi oleh para pakar yang memiliki keahlian yang sesuai. Rancangan aplikasi komputer ini menggunakan Visual Basic for Application (VBA) pada Microsoft Excel. Hal ini dapat meningkatkan efektifitas dan efisiensi proses perancangan aplikasi. Tampilan yang dihasilkan juga menjadi lebih interaktif dan mudah digunakan. Aplikasi yang telah dirancang selanjutnya diujicobakan kepada 250 siswa sekolah menengah pertama. Berdasarkan hasil analisis terhadap data hasil uji coba, dapat disimpulkan bahwa aplikasi tes literasi matematika yang telah dirancang dapat memberikan hasil pengukuran tingkat literasi matematika siswa dengan tingkat akurasi yang tinggi
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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