• Title/Summary/Keyword: MIFs

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Conditional Mutual Information-Based Feature Selection Analyzing for Synergy and Redundancy

  • Cheng, Hongrong;Qin, Zhiguang;Feng, Chaosheng;Wang, Yong;Li, Fagen
    • ETRI Journal
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    • v.33 no.2
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    • pp.210-218
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    • 2011
  • Battiti's mutual information feature selector (MIFS) and its variant algorithms are used for many classification applications. Since they ignore feature synergy, MIFS and its variants may cause a big bias when features are combined to cooperate together. Besides, MIFS and its variants estimate feature redundancy regardless of the corresponding classification task. In this paper, we propose an automated greedy feature selection algorithm called conditional mutual information-based feature selection (CMIFS). Based on the link between interaction information and conditional mutual information, CMIFS takes account of both redundancy and synergy interactions of features and identifies discriminative features. In addition, CMIFS combines feature redundancy evaluation with classification tasks. It can decrease the probability of mistaking important features as redundant features in searching process. The experimental results show that CMIFS can achieve higher best-classification-accuracy than MIFS and its variants, with the same or less (nearly 50%) number of features.

Myxoinflammatory Fibroblastic Sarcoma in the Chest Wall

  • Narm, Kyoung-Shik;Park, In-Kyu;Bae, Mi-Kyung;Kim, Gi-Jeong
    • Journal of Chest Surgery
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    • v.45 no.1
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    • pp.65-68
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    • 2012
  • Myxoinflammatory fibroblastic sarcoma (MIFS) is a recently defined rare tumor. It is mainly found in the upper and lower extremities of adults. Due to its high local recurrence rate and low metastatic rate, it is classified as a low grade-malignancy. Accurate diagnosis and early, wide excision are important for prognosis. Herein, we report a case of MIFS in a 35-year-old male patient that presented in an unusual location, the left chest wall. To our knowledge, this is the first reported case of MIFS in Korea and the second case to be reported within the global scientific literature involving the chest wall.

Fabrication and Properties of $VF_2$-TrFE/Si(100) Structure by using Spin Coating Method (Spin Coating 법을 이용한 $VF_2$-TrFE/Si(100) 구조의 제작 및 특성)

  • Lee, Woo-Seok;Jeong, Sang-Hyun;Kwak, No-Won;Kim, Ga-Ram;Yun, Hyeong-Sun;Kim, Kwang-Ho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.11a
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    • pp.115-116
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    • 2008
  • The ferroelectric vinylidene fluoride-trifluoroethylene ($VF_2$-TrFE) and $Al_2O_3$ passivation layer for the Metal/Insulator/Ferroelectric/Semiconductor (MIFS) structure were deposited using spin coating and remote plasma atomic layer deposition (RPALD), respectively. A 2.5 ~ 3 wt % diluted solution of purified vinylidene fluoride-trifluoroethylene ($VF_2$: TrFE=70:30) in a DMF solution were prepared and deposited on silicon wafer at a optimized spin speed. After annealing in a vacuum ambient at 150 ~ $200^{\circ}C$ for 60 min, upper insulator layer were deposited at temperature ranging from 100 ~ $150^{\circ}C$ by RPALD. We described electrical and structural properties of MIFS fabricated by spin coating and RPALD methods.

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The Ground Vibration Test on an Aircraft and FE Model Update (항공기 지상 진동 시험 및 동특성 모델의 개선)

  • 유홍주;변관화;박금룡
    • Journal of KSNVE
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    • v.8 no.4
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    • pp.690-699
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    • 1998
  • This paper discusses the techniques, procedures and the results of the ground vibration test(GVT) performed on the development aircraft and the simple procedure of FE model updating technique from the GVT results. The GVT was carried out using random excitation technique with MIMO(Multi-Input-Multi-Output) data acquistion method, and taking full advantage of poly-reference global parameter estimation technique to identify the vibration modes. In dynamic FE modeling, the aircraft was represented by beam elements and all dynamic analysis was performed using MSC/NASTRAN for this model. In updating procedure, the stiffness of the beam model was adjusted iteratively so as to get the natural frequencies and mode shapes close to the GVT results.

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Cloning, characterization, and expression of the macrophage migration inhibitory factor gene from the pacific abalone (Haliotis discus hannai) (북방전복 (Haliotis discus hannai) 의 대식세포이동저해인자 (MIF, Macrophage migration inhibitory factor) 유전자 동정 및 발현분석)

  • Park, Eun Hee;Shin, Eun-Ha;Kim, Young-Ok;Kim, Dong-Gyun;Kong, HeeJeong;Kim, Woo-Jin;An, Chul Min;Nam, Bo-Hye
    • The Korean Journal of Malacology
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    • v.32 no.4
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    • pp.241-247
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    • 2016
  • Macrophage Migration Inhibitory Factor (MIF) are well-defined role as unique cytokine and critical mediator in acute and chronic inflammatory diseases, autoimmune diseases. In this study, we isolated and characterized a full-length of MIF cDNA from the abalone (Haliotis discus hannai). The full-length cDNA of abMIF was of 1264 bp, consisting of a 5'-terminal UTR of 143 bp, an open reading frame of 360 bp and a 3-terminal UTR of 761 bp. The abalone MIF cDNA encodes a 119-amino acid polypeptide with a calculated molecular mass of 13.4 kDa and isoelectric point of 9.07. Multiple alignments and phylogenetic analysis with the deduced abalone MIF protein and showed strong homology with disk abalone (Haliotis discusdiscus). The deduced amino acid sequence of abMIF exhibited homology with other reported MIFs, such as 80%, with that of other disk abalone H. discus discus MIF gene. Quantitative real-time PCR (qRT-PCR) analysis indicated that abMIF was highly expression observed in hapatopacreas, intestine, foot, and gonad of normal conditioned abalone. Even though AbMIF mRNA level in hemocytes was low under the normal condition, it was sharply up-regulated and reached the maximum at 6 h post-infection with Vibrio parahaemolyticus, and then decreased at 24 h post-infection. This result indicates that abMIF plays an important role in responding in the innate immune system.