title: Model selection based product kernel learning for regression on graphs

authors: Seeland, Madeleine

subjects: computer science

abstract: The choice of a suitable graph kernel is intrinsically hard and often cannot be made in an informed manner for a given dataset. Methods for multiple kernel learning offer a possible remedy, as they combine and weight kernels on the basis of a labeled training set of molecules to define a new kernel. Whereas most methods for multiple kernel learning focus on learning convex linear combinations of kernels, we propose to combine kernels in products, which theoretically enables higher expressiveness. In experiments on ten publicly available chemical QSAR datasets we show that product kernel learning is on no dataset significantly worse than any of the competing kernel methods and on average the best method available. A qualitative analysis of the resulting product kernels shows how the results vary from dataset to dataset.

text: Model selection based product kernel learning for regression on graphs The choice of a suitable graph kernel is intrinsically hard and often cannot be made in an informed manner for a given dataset. Methods for multiple kernel learning offer a possible remedy, as they combine and weight kernels on the basis of a labeled training set of molecules to define a new kernel. Whereas most methods for multiple kernel learning focus on learning convex linear combinations of kernels, we propose to combine kernels in products, which theoretically enables higher expressiveness. In experiments on ten publicly available chemical QSAR datasets we show that product kernel learning is on no dataset significantly worse than any of the competing kernel methods and on average the best method available. A qualitative analysis of the resulting product kernels shows how the results vary from dataset to dataset.

year: 2013

title: Character-less programming

authors: Hopper, Keith

subjects: computer science

abstract: This paper proposes a mechanism for the definition and implementation of programming languages. Culturally-dependent aspects of the definition, such as the language and character set, can be separated from the process of translating programs and from the execution of a translated program.

text: Character-less programming This paper proposes a mechanism for the definition and implementation of programming languages. Culturally-dependent aspects of the definition, such as the language and character set, can be separated from the process of translating programs and from the execution of a translated program.

year: 1994-02

title: Nobody knows me even though I’m always there: Why Māori men do exist - in all the wrong places

authors: Stanley, Paul

subjects: Maori

abstract: In the study of psychology, Māori men are often only seen as the perpetrators of the problems. There is very little focus on finding solutions for Māori men, with Māori men. In the top eight causes of death for Māori males aged 15 to 24 are car crashes, homicide, and suicide. With respect to car crashes, there is a close link between alcohol-related car crashes and suicide. As a nation, we should be concerned with all of the above issues, as each of them is preventable. Invariably, we fail see the deaths of these young men as warning signs of much wider issues about why they wanted to die, or why they felt the need to kill someone close to themselves. The argument tendered in this paper is that the same way in which Māori as a group have been researched, as being “the problem”, equally applies to the way in which Māori men have continued to be have been researched: Māori men are only ever portrayed as “the problem” and are never portrayed as part of a solution subjected to this process as well. The lyrics of a well known song by UB40, One in Ten, exemplify this notion of being unknown, even though Māori men do exist in Aotearoa.

text: Nobody knows me even though I’m always there: Why Māori men do exist - in all the wrong places In the study of psychology, Māori men are often only seen as the perpetrators of the problems. There is very little focus on finding solutions for Māori men, with Māori men. In the top eight causes of death for Māori males aged 15 to 24 are car crashes, homicide, and suicide. With respect to car crashes, there is a close link between alcohol-related car crashes and suicide. As a nation, we should be concerned with all of the above issues, as each of them is preventable. Invariably, we fail see the deaths of these young men as warning signs of much wider issues about why they wanted to die, or why they felt the need to kill someone close to themselves. The argument tendered in this paper is that the same way in which Māori as a group have been researched, as being “the problem”, equally applies to the way in which Māori men have continued to be have been researched: Māori men are only ever portrayed as “the problem” and are never portrayed as part of a solution subjected to this process as well. The lyrics of a well known song by UB40, One in Ten, exemplify this notion of being unknown, even though Māori men do exist in Aotearoa.

year: 2003