Weak Relational Products
نویسنده
چکیده
The existence of relational products in categories of relations is strongly connected with the representability of that category. In this paper we propose a canonical weakening of the notion of a relational product. Unlike the strong version any (small) category of relations can be embedded into a suitable category providing all weak relational products. Furthermore, we investigate the categorical properties of the new construction and proof several (weak) versions of propositions wellknown for relational products.
منابع مشابه
Weak n-Ary Relational Products in Allegories
Abstract: Allegories are enriched categories generalizing a category of sets and binary relations. Accordingly, relational products in an allegory can be viewed as a generalization of Cartesian products. There are several definitions of relational products currently in the literature. Interestingly, definitions for binary products do not generalize easily to n-ary ones. In this paper, we provid...
متن کاملMetadata Enrichment for Automatic Data Entry Based on Relational Data Models
The idea of automatic generation of data entry forms based on data relational models is a common and known idea that has been discussed day by day more than before according to the popularity of agile methods in software development accompanying development of programming tools. One of the requirements of the automation methods, whether in commercial products or the relevant research projects, ...
متن کاملWeak Values and Relational Generalisations
We justify generalisations of weak values from a tentatively relational perspective by deriving them from a generalisation of Bayes’ rule. We also argue that these generalisations have implications of quantum nonlocality and may form a novel approach to quantum gravity and cosmology.
متن کاملTAC KBP 2015 : English Slot Filling Track Relational Learning with Expert Advice
We present the Wisconsin-Indiana system for the TAC KBP 2015 slot filling task. The proposed approach is a three-staged pipeline. The first stage consists of converting the raw text to a large set of rich relational features (we employ first-order logic for representing the underlying text). During the second stage, weak supervised examples are generated using expert human advice that form weak...
متن کاملIntegrated Database Approach for Geodetic Applications* Integrated Database Approach for Geodetic Applications
INTEGRATED DATABASE APPROACH ..................... 3 Database Schemes and Instances ........................ 4 Data Models ................................. 6 THE ENTITY RELATIONSHIP MODEL ..................... 8 ER Schemes and ER Diagrams ......................... 12 Weak Entity Types .............................. 12 ER SCHEMES FOR THE SAMPLE GEODETIC APPLICATION .......... 13 TRANSLATING ER ...
متن کامل