Additive symmetries: the non-negative case
نویسندگان
چکیده
منابع مشابه
Additive symmetries: the non-negative case
An additive symmetric value b of a with respect to c satis1es c = (a + b)=2. Existence and uniqueness of such b are basic properties in exact arithmetic that fail when a and b are 8oating point numbers and the computation of c performed in IEEE-754-like arithmetic. We exhibit and prove conditions on the existence, the uniqueness and the consistency of an additive symmetric value when b and c ha...
متن کاملAdditive Non-negative Matrix Factorization for Missing Data
Non-negative matrix factorization (NMF) has previously been shown to be a useful decomposition for multivariate data. We interpret the factorization in a new way and use it to generate missing attributes from test data. We provide a joint optimization scheme for the missing attributes as well as the NMF factors. We prove the monotonic convergence of our algorithms. We present classification res...
متن کاملNegative binomial additive models.
The generalized additive model is extended to handle negative binomial responses. The extension is complicated by the fact that the negative binomial distribution has two parameters and is not in the exponential family. The methodology is applied to data involving DNA adduct counts and smoking variables among ex-smokers with lung cancer. A more detailed investigation is made of the parametric r...
متن کاملNon-Time Additive Utility Optimization — the Case of Certainty
We study the intertemporal utility maximization problem for Hindy-HuangKreps utilities. Necessary and sufficient conditions for optimality are given. An explicit solution is provided for a large class of utility functions. In particular, the case of separable power utilities with a finite time horizon is solved explicitly.
متن کاملRecursive symmetries for geometrically complex and materially heterogeneous additive manufacturing
We present a generative method for the creation of geometrically complex andmaterially heterogeneous objects. By combining generative design and additive manufacturing, we demonstrate a unique formfinding approach and method for multi-material 3D printing. The method offers a fast, automated and controllable way to explore an expressive set of symmetrical, complex and colored objects, which mak...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Theoretical Computer Science
سال: 2003
ISSN: 0304-3975
DOI: 10.1016/s0304-3975(02)00223-2