Forecast quality assessment Sample Clauses

Forecast quality assessment. The forecast quality of the WAM precipitation predictions of the combinations and individual forecast systems described above was assessed from a deterministic and a probabilistic point of view. The correlation coefficient was used to assess the degree of linear association between the predicted mean and observed WAM precipitation. Several probabilistic verification scores have been computed for dichotomous events of the two leading modes of the WAM precipitation variability (i.e. the PC1 for the Guinean mode and the PC2 for the Sahelian mode) exceeding the median and the upper quartile of the climatological distribution. These thresholds were estimated using ensemble members for the predictions of the dynamical forecast systems and all available years. Separate threshold estimates were obtained for the predictions and the observations. Two different types of hindcasts were handled in this study: ensemble predictions (SYST4) and sets of predictions defined by a forecast mean and standard deviation (those provided by the statistical model, the FAC and the FAS). For those forecast systems that did not have ensemble hindcasts, the Gaussian forecast distribution of each year was sampled with size 10,000 to obtain samples from which to compute the median and quartiles of the corresponding climatological distributions. The 10,000 sample size was chosen because it was found to provide robust estimates of the climatological probability density function (PDF). Its robustness was estimated by calculating the Brier skill score between the predicted and observed probabilities 1,000 times for the statistical model and for a given start date. These 1,000 estimations were performed with sample size 11, 51, 100, 1,000 and 10,000. The sample size 10,000 had the smallest spread in the histogram of the 1,000 estimated values of the correlation coefficient. Finally, the probability forecasts were estimated using the estimated thresholds (median and upper quartile). The main measure of probabilistic forecast quality is the Brier score (BS), which can be defined as: = N ∑
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Related to Forecast quality assessment

  • Quality Assurance The parties endorse the underlying principles of the Company’s Quality Management System, which seeks to ensure that its services are provided in a manner which best conforms to the requirements of the contract with its customer. This requires the Company to establish and maintain, implement, train and continuously improve its procedures and processes, and the employees to follow the procedures, document their compliance and participate in the improvement process. In particular, this will require employees to regularly and reliably fill out documentation and checklists to signify that work has been carried out in accordance with the customer’s specific requirements. Where necessary, training will be provided in these activities.

  • Forecast Customer shall provide Flextronics, on a monthly basis, a rolling twelve (12) month forecast indicating Customer’s monthly Product requirements. The first ninety (90) days of the forecast shall be in weekly time buckets and will constitute Customer’s written purchase order for all Work to be completed within the first ninety (90) day period. Such purchase orders will be issued in accordance with Section 3.2 below.

  • Log Reviews All systems processing and/or storing PHI COUNTY discloses to 11 CONTRACTOR or CONTRACTOR creates, receives, maintains, or transmits on behalf of COUNTY 12 must have a routine procedure in place to review system logs for unauthorized access.

  • Forecasting Manager and Sprint PCS will work cooperatively to generate mutually acceptable forecasts of important business metrics including traffic volumes, handset sales, subscribers and Collected Revenues for the Sprint PCS Products and Services. The forecasts are for planning purposes only and do not constitute Manager's obligation to meet the quantities forecast.

  • Quality Assurance/Quality Control Contractor shall establish and maintain a quality assurance/quality control program which shall include procedures for continuous control of all construction and comprehensive inspection and testing of all items of Work, including any Work performed by Subcontractors, so as to ensure complete conformance to the Contract with respect to materials, workmanship, construction, finish, functional performance, and identification. The program established by Contractor shall comply with any quality assurance/quality control requirements incorporated in the Contract.

  • Diagnostic Assessment 6.3.1 Boards shall provide a list of pre-approved assessment tools consistent with their Board improvement plan for student achievement and which is compliant with Ministry of Education PPM (PPM 155: Diagnostic Assessment in Support of Student Learning, date of issue January 7, 2013).

  • COUNTY’S QUALITY ASSURANCE PLAN The County or its agent will evaluate the Contractor’s performance under this Contract on not less than an annual basis. Such evaluation will include assessing the Contractor’s compliance with all Contract terms and conditions and performance standards. Contractor deficiencies which the County determines are severe or continuing and that may place performance of the Contract in jeopardy if not corrected will be reported to the Board of Supervisors. The report will include improvement/corrective action measures taken by the County and the Contractor. If improvement does not occur consistent with the corrective action measures, the County may terminate this Contract or impose other penalties as specified in this Contract.

  • Conformity Assessment Procedures 1. The Parties recognise that a broad range of mechanisms exist to facilitate the acceptance of conformity assessment results, including:

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  • Research Analyst Independence The Company acknowledges that the Underwriters’ research analysts and research departments are required to be independent from their respective investment banking divisions and are subject to certain regulations and internal policies, and that such Underwriters’ research analysts may hold views and make statements or investment recommendations and/or publish research reports with respect to the Company and/or the offering that differ from the views of their respective investment banking divisions. The Company hereby waives and releases, to the fullest extent permitted by law, any claims that the Company may have against the Underwriters with respect to any conflict of interest that may arise from the fact that the views expressed by their independent research analysts and research departments may be different from or inconsistent with the views or advice communicated to the Company by such Underwriters’ investment banking divisions. The Company acknowledges that each of the Underwriters is a full service securities firm and as such from time to time, subject to applicable securities laws, may effect transactions for its own account or the account of its customers and hold long or short positions in debt or equity securities of the companies that may be the subject of the transactions contemplated by this Agreement.

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