models for time series and forecasting
introduction to time series and forecasting
Ngày tải lên :
05/03/2016, 13:14
... of Time Series 1.2 Objectives of Time Series Analysis 1.3 Some Simple Time Series Models 1.3.1 Some Zero-Mean Models 1.3.2 Models with Trend and Seasonality 1.3.3 A General Approach to Time Series ... 1.6 Examples of Time Series Objectives of Time Series Analysis Some Simple Time Series Models Stationary Models and the Autocorrelation Function Estimation and Elimination of Trend and Seasonal ... Roots in Time Series Models 6.3.1 Unit Roots in Autoregressions 6.3.2 Unit Roots in Moving Averages 6.4 Forecasting ARIMA Models 6.4.1 The Forecast Function 6.5 Seasonal ARIMA Models 6.5.1 Forecasting...
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Neural network ensemble operators for time series forecasting
Ngày tải lên :
16/08/2016, 12:51
... neural networks for nonlinear time- series forecasting Computers and Operations Research 28 (4), 381–396 Zhang, G P., Qi, M., 2005 Neural network forecasting for seasonal and trend time series European ... networks at forecasting and prediction? a review and evaluation Journal of Forecasting 17 (5-6), 481–495 22 Agnew, C E., 1985 Bayesian consensus forecasts of macroeconomic variables Journal of Forecasting ... for forecasting across all series, for each dataset As a different number of hidden nodes are used for each time series, the complexity of NN training changes, requiring different amount of time...
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DSpace at VNU: A parallel dimensionality reduction for time-series data and some of its applications
Ngày tải lên :
14/12/2017, 16:47
... m-dimensional time- series data of the n-dimensional time- series data T[1 n] The formula (2.4) gives us a function transforming n-dimensional time- series data to m-dimensional time- series data This transforming ... reduction for time- series data Let T[1 n] be a time- series data The time- series data consists of n real numbers, so it is called an n-dimensional data The dimensionality n of time- series data ... S and the pattern P are time- series data, where each time- series data consists of n real numbers Thus, we can calculate the sum of each time- series data or the sum of some consecutive time- series...
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Báo cáo khoa học: "Flow Network Models for Word Alignment and Terminology Extraction from Bilingual Corpora" docx
Ngày tải lên :
17/03/2014, 07:20
... between bandwidth and largeur de bande can be obtained through the edge linking these two units (type 1), or through two edges, one from bandwidth to largeur de bande., and one from bandwidth ... and l~ the number of English ones, where P(a,e~,f~) is the probability of observing the alignment a together with the English and French sentences, es and f~, and (a,e,f)~ -1 is a shorthand for ... two edges from bandwidth to largeur and bande (type 3), secondly, there may be conflicts between connections: in figure both largeur de bande and tdldcommunications are linked to bandwidth even...
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SEMI-MARKOV RISK MODELS FOR FINANCE, INSURANCE AND RELIABILITY doc
Ngày tải lên :
18/03/2014, 00:20
... the reader For example, if the reader is interested in the new approaches for finance models, he can read the first four chapters and then immediately Chapters and 6, and similarly for other topics ... undiscounted and discounted cases, and to their numerical treatment Chapter develops the Cox-Ross-Rubinstein or binomial model and semiMarkov extension of the Black and Scholes formula for the fundamental ... completely new risk models with great expectations for future applications, particularly in ruin theory Chapter presents classical and semi-Markov models for reliability and credit risk, including...
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Báo cáo " Research on organizing spatial production of economic models for agro - fisheries and processing industry in Diem Dien Town, Thai Thuy District, Thai Binh " doc
Ngày tải lên :
22/03/2014, 12:20
... is distributed over an even and flat terrain, and which can be improved to grow farm products and develop aquaculture Generally, the agricultural land and wetlands for aquaculture in this area ... eliminate hunger and reduce poverty for the farmers - Developing spatial organization of high effective economic models have created new awareness, and goods and market understanding for inshore farmers ... 32-42 cucumber and canned vegetable for the processing industry and exports, and by strengthening cultivating salty and brackish aquaculture, catching, seafood processing and maritime transport...
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Query Languages and Data Models for Database Sequences and Data Streams doc
Ngày tải lên :
23/03/2014, 12:20
... return a sequence of length one and they are all nonmonotonic, and therefore blocking Continuous count and sum are monotonic and nonblocking, and thus suitable for continuous queries Order! In ... blocking, when for every sequence S of length n, Gj (S) = [ ] for every j < n, and Gn (S) = G(S) • nonblocking, when for every sequence S of length n, Gj (S) = G(S j ), for every j ≤ n Therefore, a ... used for data streams: for instance, the presence of time stamps is required for query completeness The paper is organized as follows In the next section, we survey several data models for sequences...
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Báo cáo hóa học: " Research Article An Energy-Based Similarity Measure for Time Series" ppt
Ngày tải lên :
22/06/2014, 19:20
... (x) and H (y) as − Table 1: SimilB, the ED, the CC between f2 and f1 , and f2 and f3 in Figure EXPRESSION OF ΨB FOR ASSOCIATED ANALYTIC SIGNALS 1 d2 uv ă uv (uă + vu) = 2uv v 2 dt 2 Time ... ED and the CC Since f1 , f2 , and f3 have different shapes, then an appropriate similarity measure would show, for example, that the similarity values between f1 and f2 and that between f3 and ... response of h is h( f ) = − jsign( f ) form of the operator noted ΨBd and operating on discretetime signals x(n) and y(n) Three sample differences are examined For simplicity, we replace t by nTs...
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Báo cáo nghiên cứu khoa học: "Application of hydro-mathematical models for flood forecast and inundation warning of Tra Khuc-Ve River basins" potx
Ngày tải lên :
21/07/2014, 16:21
... flood forecasting and inundation warning for Tra Khuc and Ve river basins Scheme for connection of flood forecasting and inundation warning is shown in Figure Figure Scheme for flood forecasting and ... present a option for application of hydro-mathematical models to improve efficiency and extend the lead time for flood forecasting and inundation warning, applicable to Tra Khuc and Ve river basins ... hydrological model and coupled one and two dimensional hydrodynamic model for flood forecasting and [3] Hydro-meteorological Prediction Center of Quang Ngai province, The plan for flood forecasting...
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Báo cáo sinh học: "Linear models for joint association and linkage QTL mapping" ppt
Ngày tải lên :
14/08/2014, 13:21
... simulations for the "drift" scenario and Tables and for the "admixture" scenario In the "drift" scenario, LA and IBD methods are biased for the cM scenario, and the IBD method is biased for the 20 ... (iii) at the same time providing, based on expectations and covariances, a simple and coherent linear -models framework for association and linkage and (iv) reduces to wellknown models on the hypothesis ... variance we apply (19) For founders, var2 iances are σ a3 for the first gamete in 1, σ a2 for the sec2 ond, σ a4 for the first gamete in 2, and so on For non- founders, let consider for example gamete...
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View based models for visual tracking and recognition
Ngày tải lên :
16/09/2015, 17:14
... model and the affine transformation formulation in such a manner that the matching is easy and straightforward and does not rely on critical assumptions for describing images undergoing affine transformations ... position and color: f (x, u|Ω) = α N N i=1 ks (||x − xi ||2 )ku (||u − ui )||2 ) for (xi , ui ) ∈ Ω (2.8) where ks and ku are kernel functions with bandwidth hs and hu , respectively for spatial and ... technique for objects under transformation The technique is based on a spatially -and- spectrally smooth similarity measure that offers capability for accurate and robust posture estimation To account for...
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Application of hydro-mathematical models for flood forecast and inundation warning of Tra Khuc-Ve River basins
Ngày tải lên :
18/02/2017, 21:34
... flood forecasting and inundation warning for Tra Khuc and Ve river basins Scheme for connection of flood forecasting and inundation warning is shown in Figure Figure Scheme for flood forecasting and ... flood forecasting and inundation warning for Tra Khuc and Ve river basins Scheme for connection of flood forecasting and inundation warning is shown in Figure Figure Scheme for flood forecasting and ... hydrological model and coupled one and two dimensional hydrodynamic model for flood forecasting and [3] Hydro-meteorological Prediction Center of Quang Ngai province, The plan for flood forecasting...
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Application of data mining techniques in the prediction of coronary artery disease use of anaesthesia time series and patient risk factor data
Ngày tải lên :
07/08/2017, 15:52
... Comparison of time- series characteristics for total valid time- series and time- series with clinical data available (Phase 1) 72 Table 4-5: Time- series characteristics for risk groups ... selected time- series derived and risk factor (RF) variables, the MR ranges from 8.83 to 10.36 with dataset RF_A (raw time- series data and RF) being 8.85 and dataset RF_F (time segmented time- series ... 113 Figure 5-10: Time- series and ST/HR correlation plots (case D) 113 Figure 5-11: Time- series and correlation plots (Case E) 114 Figure 5-12 : Time- series and ST/HR correlation...
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DSpace at VNU: Research on organizing spatial production of economic models for agro - fisheries and processing industry in Diem Dien Town, Thai Thuy District, Thai Binh Province
Ngày tải lên :
15/12/2017, 23:47
... d istrib u ted over an even and flat terrain, and vvhich can be im proved to grow farm products and develop aquaculture Generally, the agricultural land and vvetlands íor aqu acu ltu re in this ... m any tropical and tem perate plants, such as: rice, bean, peanut, cucum ber, casaba m elon, and so forth YVinter, how ever, vvith low tem perature and changeable vveather rain and storm s have ... soil, alkaline soil and building dikes encroaching the sea Due to limited land resources, it is essential to have a suitable land use planning, and shift the structure of crops and dom estic animal...
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A novel hybrid method for time series subsequence
Ngày tải lên :
16/12/2017, 01:47
... extrema in a time series contain important change points of the time series The algorithm for identifying important extrema was first introduced by Pratt and Fink, 2002 [8] Fink and Gandhi, 2007 ... extrema for segmenting time series into subsequences In [2], Fink and Gandhi give the definition of important extrema and the algorithm that can identify important extrema from a given time series ... is because for this specific time series, the early abandoning technique [5] applied for DTW calculation had no effect in pruning off costly distance computations and hence the time series had...
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DSpace at VNU: Parallel dimensionality reduction transformation for time-series data
Ngày tải lên :
16/12/2017, 03:20
... transform and the discrete cosine transform for T[1 n] to get m-dimensional timeseries data TRF[1 m] and TRC[1 m] as follows: The formula (4) gives us a function transforming n-dimensional time- series ... requirement: for an n-dimensional time- series data X and an n-dimensional MBR [L,U], X ∈ [L,U] ⇒ XF ∈ [LF,UF] In this paper we present a dimensionality reduction transformation for multidimensional timeseries ... of the transformation f in computer graphics and image processing The dimensionality reduction transformation f can be applied for a matching problem, even though time- series data and queries...
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DSpace at VNU: Adaptation of turbo coding and equalization in turbo equalization for time-varying and frequency-selective channels
Ngày tải lên :
16/12/2017, 15:09
... “Linear time and frequency domain turbo equalization,” dans Proc IEEE Veh Technol Conf., mai 2001, pp 1449–1453 [5] R Otnes et M Tuchler, “Iterative channel estimation for turbo equalization of time- varying ... − σe−2 (E [|xk ek−1 |])2 [21] S Dolinar et D Divsalar, “Weight distributions for turbo codes using random and nonrandom permutations,” Jet Propulsion Laboratory, Pasadena, Calif., TDA Prog Rep ... [12] F Ling et J.G Proakis, “Adaptive lattice decision-feedback equalizers: Their performance and application to time- variant multipath channels,” IEEE Trans Commun., vol 33, no 4, avril 1985, pp...
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