Showing 541 - 560 results of 1,176 for search '"time series"', query time: 0.09s Refine Results
  1. 541

    Tracking pygmy blue whale diving behaviour and validation of foraging areas defined from horizontal movement data by Michele Thums, Luciana C. Ferreira, Andrew Davenport, Micheline Jenner, Luciana Möller, Grace Russell, Robert D. McCauley, Curt Jenner

    Published 2025-01-01
    “…Here, nine pygmy blue whales (Balaenoptera musculus brevicauda) were tagged with satellite tracking tags and pop-up archival tags (PATs) providing depth and accelerometry time series to determine where actual foraging occurs during migration. …”
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    Article
  2. 542

    Understanding Human Papillomavirus Vaccination Hesitancy in Japan Using Social Media: Content Analysis by Junyu Liu, Qian Niu, Momoko Nagai-Tanima, Tomoki Aoyama

    Published 2025-02-01
    “…Natural language processing techniques and large language models (LLMs) were used for stance analysis of the collected data. Time series analysis and latent Dirichlet allocation topic modeling were used to identify shifts in public sentiment and topic trends over the decade. …”
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    Article
  3. 543

    Enhancing stock index prediction: A hybrid LSTM-PSO model for improved forecasting accuracy. by Xiaohua Zeng, Changzhou Liang, Qian Yang, Fei Wang, Jieping Cai

    Published 2025-01-01
    “…The long short-term memory neural network (LSTM) widely employed in stock price prediction due to its ability to address long-term dependence and transmission of historical time signals in time series data. However, manual tuning of LSTM parameters significantly impacts model performance. …”
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    Article
  4. 544

    A Semiparametric Approach for Modeling Partially Linear Autoregressive Model with Skew Normal Innovations by Leila Sakhabakhsh, Rahman Farnoosh, Afshin Fallah, Mohammadhassan Behzadi

    Published 2022-01-01
    “…The nonlinear autoregressive models under normal innovations are commonly used for nonlinear time series analysis in various fields. However, using this class of models for modeling skewed data leads to unreliable results due to the disability of these models for modeling skewness. …”
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    Article
  5. 545

    Analysis of Business Cycles in the Breeding of Pigs, Cattle and Poultry and their Relationship to the Causality of Wheat and Rye Cultivation in Poland by Mateusz Mierzejewski, Magdalena Lampart

    Published 2018-06-01
    “…The study used a cross-spectral analysis, which indicated cyclical relationships and shifts between the studied time series. The methodology of the work was based on a simplified spectral analysis, i.e. the use of the square of coherence, spectral density and phase spectrum. …”
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    Article
  6. 546

    NON-DAMAGE BUSINESS INTERRUPTION INSURANCE POLICIES DURING THE COVID-19 PANDEMIC by Marina Brogi, Valentina Lagasio, Fabrizio Santoboni

    Published 2022-05-01
    “… Pandemic risks, such as Covid-19, are difficult to insure as they are characterized by multiple factor risks and losses and involve different types of businesses and people simultaneously. The scarcity of time series and statistical data prevents insurers from developing correct pricing. …”
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    Article
  7. 547

    Unveiling uncertain forces in second-order driven oscillators via internal model: A discrete-time feedback by R. Femat, C. Jiménez-gallegos

    Published 2000-01-01
    “…This contribution deals with recovering of the dynamics of the uncertain forces from measurements (time series). The main idea is to construct an internal model of the nonlinear system and design a discretetime feedback in such way that the model/system differences be stabilized at origin. …”
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    Article
  8. 548

    Financial Risk Avoidance Based on the Sensor Network and Edge Computing by Yong Yu, Xiaoguo Yin

    Published 2022-01-01
    “…Moreover, this paper divides the sensor data into several sliding windows according to the time series, analyzes the offset between the data object and other data in the sliding window by calculating the offset distance, and uses the abnormal level to indicate the possibility of data abnormality. …”
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    Article
  9. 549

    Forecasting Volatility with Time-Varying Coefficient Regressions by Qifeng Zhu, Miman You, Shan Wu

    Published 2020-01-01
    “…By capturing and studying the time series of time-varying coefficients of the predictors, we find that the coefficients (predictive ability) of heterogeneous volatilities are negatively correlated and the leverage effect is not significant or inverse during certain periods. …”
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    Article
  10. 550

    Comparison of Statistical Methods to Graphical Methods in Rainfall Trend Analysis: Case Studies from Tropical Catchments by Upaka Rathnayake

    Published 2019-01-01
    “…Time series analyses for climatic factors are important in climate predictions. …”
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    Article
  11. 551

    IMPACT OF PANELISTS ON WIBOR RATES – HYBRID APPROACH by Piotr Mielus

    Published 2020-06-01
    “…A solution is a hybrid method which combines declarations of panelists and prices of eligible transactions. Based on historic time series, the article analyses the impact of individual banks on the published index and presents the way the hybrid method can be used for WIBOR 3M. …”
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    Article
  12. 552

    TESTING THE PURCHASING POWER PARITY HYPOTHESIS FOR BRICS: EVIDENCE FROM THE FOURIER UNIT ROOT AND COINTEGRATION TEST by Tuncer Gövdeli, Serpil Sumer

    Published 2021-11-01
    “…This study is a review of the purchasing power parity hypothesis applied to BRICS countries (Brazil, Russia, India, China, and South Africa). For each country, time series based on a Fourier perspective were applied. …”
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    Article
  13. 553

    The Optimal Supply Decision Based on Dynamic Multiobjective Optimization and Prediction by Kejia He, Hongyu Cheng, Yuchen Zhou, Cuihua Xie

    Published 2022-01-01
    “…In contrast to traditional approaches that rely on expert opinions, the proposed approach in this study allows the time series analysis (ARIMA) to forecast the trend in manufacturers’ development during the execution of the plan. …”
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    Article
  14. 554

    Recognizing human activities from smartphone sensors using hierarchical continuous hidden Markov models by Charissa Ann Ronao, Sung-Bae Cho

    Published 2017-01-01
    “…However, most of the existing works focus on discriminative classifiers while neglecting the inherent time-series and continuous characteristics of sensor data. …”
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    Article
  15. 555

    Deep Neural Network Model Forecasting for Financial and Economic Market by Fan Chen

    Published 2022-01-01
    “…In view of the Internet financial market dynamic (volume and daily trading), it is proposed based on a deep neural network for fusion level time series prediction model. First, the proposed model processes the input of characteristic variables of multiple series (market macrodynamic series and multiseed series) and uses an attention mechanism to fuse the input variables in two dimensions of time and sequence feature. …”
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    Article
  16. 556

    NON-DAMAGE BUSINESS INTERRUPTION INSURANCE POLICIES DURING THE COVID-19 PANDEMIC by Marina Brogi, Valentina Lagasio, Fabrizio Santoboni

    Published 2022-05-01
    “… Pandemic risks, such as Covid-19, are difficult to insure as they are characterized by multiple factor risks and losses and involve different types of businesses and people simultaneously. The scarcity of time series and statistical data prevents insurers from developing correct pricing. …”
    Get full text
    Article
  17. 557

    The Underwater Projectile Launching Process Prediction Based on Reduced Order Method by Ke Deng, Yi Jiang, Huan-Xing Liu

    Published 2024-01-01
    “…In this paper, computational fluid dynamics (CFD) and reduced order method (ROM) are developed for predicting the velocity time series during the initial stage of projectile launching. …”
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    Article
  18. 558

    A Case Follow-Up Report: Possible Health Benefits of Extra Virgin Olive Oil by Said Shahtahmasebi, Shahnaz Shahtahmasebi

    Published 2004-01-01
    “…We recommend that future studies of this kind ought to include a time series of blood cholesterol based on daily measurements or intervals much shorter than the bimonthly measurements and to include measures of overall well being as covariates.…”
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  19. 559

    Efficient Prediction of Network Traffic for Real-Time Applications by Muhammad Faisal Iqbal, Muhammad Zahid, Durdana Habib, Lizy Kurian John

    Published 2019-01-01
    “…Many predictors from three different classes, including classic time series, artificial neural networks, and wavelet transform-based predictors, are compared. …”
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    Article
  20. 560

    A Missing Sensor Data Estimation Algorithm Based on Temporal and Spatial Correlation by Zhipeng Gao, Weijing Cheng, Xuesong Qiu, Luoming Meng

    Published 2015-10-01
    “…Firstly, it saves all the data sensed at the same time as a time series, and the most relevant series are selected as the analysis sample, which improves efficiency and accuracy of the algorithm significantly. …”
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    Article