The Agricultural Product Market Quotations Early Warning System Design With Realizes

The agricultural market quotation early warning system will be carries on the test to the agricultural product future quotation, forecast agricultural product each kind of quotation and proposes the measure information system promptly. The establishment agricultural market quotation early warning system, adapts our country agricultural development objective request action. Our country agriculture and the rural economic development are occupying a new historical stage, after our country joins World Trade Organization, the domestic agricultural product market's open degree further enlarges, the international market is also getting bigger and bigger to the domestic agricultural production's influence, Chongqing agriculture's superiority is weaken obviously, the agricultural product market quotation also receives the world quotation the influence to present the fluctuation. Under this kind of situation, to avoid the big fluctuation effectively, causes the agriculture to lose small as far as possible; To guide to produce the operator promptly to dodge the market risk effectively, to the Chongqing agricultural product market quotation implementation dynamic early warning, sharpens the agricultural synthesis competitive ability, we have carried on Chongqing agricultural product market quotation early warning system's design.This design has the following characteristic:1. Applies the object-oriented analysis and the design method carries on the system design and the detailed design; Used has carried on the system various levels demand analysis with the example analysis, the utilization class chart and the succession chart has carried on the detailed design, was advantageous based on this uses the circulation iteration to carry on the programming.2. In the B/S pattern onstage design and in the backstage design basis, pays great attention the database, the model base and the method storehouse and the close coordinate design, so that policy-making support function smooth realization. And carries on the classified forecast and the quotation trend forecast using the BP neural network to the agricultural product market quotation trend; Paid great attention to establish the neural network class and the sample class, the data class and the agricultural production category's combination, were advantageous for each kind of agricultural product forecast procedure the design.Mentions specifically, the present paper has carried on the following design:1. Used has carried on the standard detailed demand analysis with the example analysis to the system. Uses the illustration including various levels, the antecedent condition, the successful consequent, the main way, the exceptional way and so on various essential factors' showing, lays the foundation for the system design and the detailed design.2. Has carried on the early warning indicator system's establishment and the model study, including agricultural product quotation tendency forecast model agricultural product quotation police sentiment anatomic model, police intensity model, price analysis model and BP neural network forecast algorithm and model training research. The BP neural network model structure and the training experimental study obtains the ideal result.3. Carries on the system design and the detailed design using the UML modelling law, the use"the actual - gas-dynamic theory - - inference - - practice"the computer science thought that has carried on the database conceptual design, the logical design and the physical design. a kind of chart, the succession chart and the database relations table three kind of graph design's uniformity, lays the good foundation for the programming.4. Finally introduced the related important technology and the module testing, the integration testing and the system test. Specially introduced the BP neural network's classified forecast and the quotation trend forecast example test, obtains the expectation effect.