Development of Locally Weighted Projection Regression for Concurrency Control in Computer-Aided Design Database

Concurrency control (CC) is the activity of synchronizing operations issued by concurrently executing programs on a shared database. Concurrency control is an important concept for proper transactions on objects to avoid any loss
of data or to ensure proper updating of data in the database. This paper presents development of locally weighted projection regression (LWPR) for concurrency
control while developing bolted connection using Autodesk inventor 2008. While implementing concurrency control, this work ensures that associated parts cannot be accessed by more than one person due to locking. The LWPR learns the objects and the type of transactions to be done based on which node in the output layer of the network exceeds a threshold value. Learning stops once all the objects are
exposed to LWPR. We have attempted to use LWPR for storing lock information when multi users are working on computer-aided design (CAD).