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The validation history and input/output requirements of the spin coach, a baseball training system. The team responsible for the project includes blake, wolert, montealegre, and wood. The document details the necessary inputs, such as initialization, user login, photos and videos, predictions of ball movement, and pointing device. The technology requirements are also discussed, stating that feasible techniques will be used to teach baseball players to identify pitch spins. The input/output performance requirements are reasonable, including convenience, effectiveness, sensory perception, duration control, verification, and feedback.
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Wood Product Documents SIE 554A, Fall 2006
Revision History Revision Date Team Member Description 1 10/14/2006 A. Blake New revision. 2 12/04/2006 J. Wood Updated all categories 3 12/04/2006 J.Wood Modified numbering
Wood Product Documents SIE 554A, Fall 2006 4.1 Input/Output and Functional Design The required inputs and outputs of The Spin Coach, as described in Document 3, are as follows: The set of inputs to the system are defined by IRP1: IRP1 = IR1P1 x IR2P1 x IR3P1 x IR4P1 x IR5P IR1P1 - Initialize. This input defines whether or not the system has been initialized. This input is a necessary precondition to the next input. The value of this input is either yes (1) or no (0) and sufficiently describes the system. IR1P1 = {0, 1} IR2P2 – Login. This input distinguishes between individual users of the system via a simple mathmatical function, which is necessary due to the fact that the system has the ability to gather and store individual user statistics and update each time Game mode is initiated. IR3P1 – Photos and video taken. Video of the various pitches aforementioned are a necessary input to the system. A simple mathematical function enables the system to display images of various pitches. This input is necessary and sufficient to allow the user to discern various pitches and input their response into the system when prompted. IR4P1 – Predictions of ball movement. This input is binary and it is expressed as a vector. The system accepts user input for the prediction of ball movement in which the system can respond with user feedback. This input is necessary and sufficient for the system to be implemented.
Wood Product Documents SIE 554A, Fall 2006 4.3.2 Effectiveness The effectiveness of the system is determined by the percent increase or decrease in the user’s batting average over time. The baseline is 20%, therefore, if we see at least a 20% increase in the user’s batting average, we deem the system as an effective system. A baseline of 20% seems reasonable, based on the current system. 4.3.3 Sensory Perception Sensory perception is interpreted as how easy it is to identify the pitch type. The rating will be on a scale of 1 to 10 with 1 being very difficult to identify the pitch type and 10 being very easy to identify the pitch type. With a baseline of 5, this seems reasonable. 4.3.4 Duration Control Duration Control means that the system allows for control of the duration of the image presentation. The tester will assess whether the system allows the user to control the duration of the image presentation or not. This figure of merit will be measured as follows: 0 = the player cannot control duration of the image presentation. 1 = the player can control the duration of the image presentation This is reasonable and sufficient for the system. 4.3.5 Verification Verification will be measured by determining the amount of data the system can gather and store and display to the player, to show the player’s progress in using the Spin Coach. These will be measured on a scale of 1 to 10, 10 being the maximum amount of data gathered. Based on the current system and a baseline of 5, this seems reasonable. 4.3.6 Feedback
Wood Product Documents SIE 554A, Fall 2006 The tester will assess the system and determine whether it provides feedback to the user or not. This will be a Boolean function with the following rating which is sufficient and reasonable: 0 = the system does not provide feedback to the user. 1 = the system provides feedback to the user. 4.4 Utilization of Resources Requirement 4.4.1 Process Cost The total processing cost will be a measure of the annual process production cost in thousands of U. S. dollars. This includes sales, marketing, advertising, development, engineering, upgrades and telephone support. The cumulative cost for the elements shall not exceeded 500k. Based on the system to be implemented, this value seems more than reasonable. 4.4.2 Production Cost Product Production Cost is a measure of how much it will cost in U. S. dollars for JSI to produce one unit of the product. These costs will include man hours for producing one unit and material cost for one unit. The maximum cost for production of a unit is $500 which seems reasonable being that the product costs are contributed mostly to software programming and little to material costs. 4.4.3 Shipping Cost Shipping cost is composed of Shipping Weight, Shipping Expenses, Shipping Effort and Billing Cost per unit. The target value is ten dollars and shall not exceed twenty five dollars. Due to the size of the current system, shipping is not expected to exceed the allowable limit and will most likely be closer to the target value unless shipped overseas. 4.4.4. Controllability Controllability assesses how much control JA^2 will have over the product. This level of control is measured as a percentage, with 100% being optimal. Due to the fact that the system is mostly software, controllability is expected to be above the baseline value of 50%, therefore this is acceptable and sufficient. 4.4.5 Autonomy
