Results 91 to 100 of about 6,292,584 (225)

Beam Orientation Optimization for Intensity Modulated Radiation Therapy using Adaptive l1 Minimization

, 2011
Beam orientation optimization (BOO) is a key component in the process of IMRT treatment planning. It determines to what degree one can achieve a good treatment plan quality in the subsequent plan optimization process.
Bortfeld T, Bortfeld T, Chartrand R Sidky E Y Xiaochuan P, Chunhua Men, Djajaputra D, Fung G M, Haas O C L, Li Y J, Meedt G, Men C, Schreibmann E, Steve B Jiang, Woudstra E, Xun Jia, Yifei Lou, Zhu L   +15 more
core   +1 more source

TERM WEIGHTING BERBASIS INDEKS BUKU DAN KELAS UNTUK PERANGKINGAN DOKUMEN BERBAHASA ARAB

Lontar Komputer, 2015
Information Retrieval berdasarkan query tertentu sudah jamak ditemukan pada sistem komputer saat ini. Salah satu metode yang populer digunakan adalah perangkingan dokumen menggunakan space vector model berbasis pada nilai term weighting TF.IDF.
M. Ali Fauzi, Agus Arifin, Anny Yuniarti
doaj  

Forecasting the Swiss Economy Using VECX* Models: An Exercise in Forecast Combination Across Modelsand Observation Windows [PDF]

This paper uses vector error correction models of Switzerland for forecasting output, inflation and the short-term interest rate. It considers three different ways of dealing with forecast uncertainties.
Katrin Assenmacher-Wesche, M. Hashem Pesaran   +1 more
core  

TVD finite difference schemes and artificial viscosity [PDF]

The total variation diminishing (TVD) finite difference scheme can be interpreted as a Lax-Wendroff scheme plus an upwind weighted artificial dissipation term. If a particular flux limiter is chosen and the requirement for upwind weighting is removed, an
Davis, S. F.
core   +1 more source

Adaptive composite loss for volumetric whole heart segmentation

Scientific Reports
Accurate segmentation in medical imaging requires loss functions that capture both regional overlap and boundary alignment. This study evaluates composite losses combining binary cross-entropy (BCE) and a boundary-based term under fixed and adaptive ...
Krittanat Sutassananon, Worapan Kusakunniran, Mehmet Orgun, Thanongchai Siriapisith   +3 more
doaj   +1 more source

Arabic Book Retrieval using Class and Book Index Based Term Weighting

, 2017
One of the most common issue in information retrieval is documents ranking. Documents ranking system collects search terms from the user and orderly retrieves documents based on the relevance.
M. Fauzi, A. Arifin, Anny Yuniarti
semanticscholar   +1 more source

Aspect Based Sentiment Analysis on Shopee Application Reviews Using Support Vector Machine

Lontar Komputer
One of the e-commerce in Indonesia is Shopee. Feedback from users is needed to improve the quality of e-commerce services and user satisfaction. This research process includes data scraping, labeling, text pre-processing, TF-IDF, aspect, and sentiment ...
Dyah Ayu Wulandari, Fitra A. Bachtiar, Indriati Indriati   +2 more
doaj   +1 more source

An Investigation into the Process of Organizing and Retrieving Web Texts Based on the Integration of Semantic Concepts In order to organize knowledge

Iranian Journal of Information Processing & Management, 2019
Improvement in information retrieval performance relates to the method of knowledge extraction from large amounts of text information on web. Text classification is one of application of knowledge extraction with supervised machine learning methods. This
Saeede Anbaee Farimani, Hamid Tabatabaee, Mojtaba kaffashan kakhki   +2 more
doaj  

Structural–Semantic Term Weighting for Interpretable Topic Modeling with Higher Coherence and Lower Token Overlap

Information
Topic modeling of large news streams is widely used to reconstruct economic and political narratives, which requires coherent topics with low lexical overlap while remaining interpretable to domain experts.
Dmitriy Rodionov, Evgenii Konnikov, Gleb Golikov, Polina Yakob   +3 more
doaj   +1 more source

The Tactical and Strategic Value of Commodity Futures [PDF]

Historically, commodity futures have had excess returns similar to those of equities. But what should we expect in the future? The usual risk factors are unable to explain the time-series variation in excess returns.
Campbell R. Harvey, Claude B. Erb
core