He died of cancer last year alone, and nobody found his body for two weeks. I felt sad for him but had no guilty feelings about losing touch with him, because I felt it had been his decision as an adult. I didn't wish to go to the funeral as I thought it would cause me too much emotional pain and wanted to protect myself, but I called my middle brother to see if I could help with the paperwork or bills. He called me a money grabber and said I wasn't entitled to anything. There was no will and I was adopted before he was born, so I got a third of the money.
In this paper we present a mathematical formalism for the so called systems with roles. We sketch the main problems and challenges for the research to be solved and we develop the generic algebraic structure, called "lattice with inheritance" and use it to describe the system with roles and to deal with the so called message dispatch problem.
Most existing inductive learning systems form concept descriptions in propositional languages from vectors of basic features. However, many concepts are characterized by the relationships of individual examples to general domain knowledge. We describe a system that constructs relational terms e ciently to augment the description language of standard inductive systems. In our approach, examples and domain knowledge are combined into an inheritance network, and a form of spreading activation is used to find relevant relational terms. Since there is an equivalence between inheritance networks and relational databases, this yields a method for exploring tables in the database and finding relevant relationships among data to characterize concepts. We also describe the implementation of a prototype system on the CM-2 parallel computer and some experiments with large data sets.
Heritability has traditionally been thought to be a characteristic feature of the genetic material of an organism--notably, its DNA. However, it is now clear that inheritance not based on DNA sequence exists in multiple organisms, with examples found in microbes, plants, and invertebrate and vertebrate animals. In mammals, the molecular mechanisms have been challenging to elucidate, in part due to difficulties in designing robust models and approaches. Here we review some of the evidence, concepts, and potential mechanisms of non–DNA sequence–based transgenerational inheritance. We highlight model systems and discuss whether phenotypes are replicated or reconstructed over successive generations, as well as whether mechanisms operate at transcriptional and/or posttranscriptional levels.