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We present a logic for Proximity-based Understanding of Conditionals (PUC-Logic) that unifies the Counterfactual and Deontic logics proposed by David Lewis. We also propose a natural deduction system (PUC-ND) associated to this new logic. This inference system is sound, complete, normalizing and decidable.
Stream processing is about processing continuous streams of data by programs in a workflow. Continuous execution is discretized by grouping input stream tuples into batches and using one batch ata time for the execution of programs. As source input batches arrive continuously, several batches may beprocessed in the workflow simultaneously. Ensuring correctness of these concurrent executions isimportant...
Repairs are updates to reduce inconsistency. Repair checking finds out if an update is a repair. To do so, we check if the undo of the update increases the amount of integrity violation, using measure-based integrity checking. Sound repair checking by integrity checking requires the latter to be complete. Repair checking by integrity checking compares well to conventional approaches.
The paper explores the connection between Soren Hallden's logic of nonsense (and its expansions) and Logics of Formal Inconsistency (LFIs), one of the main traditions in paraconsistency. Although not much attention has been payed by paraconsistentists, Hallden's logic can be nicely connected to LFIs. The main result of the paper is a reformulation of an expansion of logic of nonsense studied by Lennart...
The protocols underlying large-scale geo-replicated storage systems implement a wide spectrum of transactional consistency criteria. These protocols typically execute in two phases: ● In the Execution phase, a transaction reads from a database snap-shot and buffers its updates. ● In the Termination phase, a multicast/2PC protocol commits updates atomically while performing a so-called certification...
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