We compare the profit of optimal third-degree price discrimination policy against a uniform pricing policy. A offers same to all segments market. Our main result establishes that for broad class problems with concave functions (in space) and common support, is guaranteed achieve one half monopoly profits. This bound holds any number prices seller might use under discrimination. establish these ...

Recently developed neuroimaging and electrophysiological techniques are allowing us to answer fundamental questions about how behavioral states regulate our perception of the external environment. Studies using these techniques have yielded surprising insights into how sensory processing is affected at the earliest stages by attention and motivation, and how new sensory information received dur...

We deployed the Multiple Necessary Cues (MNC) discrimination task to see if pigeons can simultaneously attend to four different dimensions of complex visual stimuli. Specifically, we trained nine pigeons (Columba livia) on a go/no go discrimination to peck only 1 of 16 compound stimuli created from all possible combinations of two stimulus values from four separable visual dimensions: shape (ci...

Fuzzy class label adjustment is a classification preprocessing strategy that compensates for the possible imprecision of class labels. Using training vectors, robust measures of location and dispersion are computed for each class center. Based on distances from these centers, fuzzy sets are constructed that determine the degree to which each input vector belongs to each class. These membership ...

Iterative learning procedures on hybrid electro-optics ystems were employed to generate complex reference discriminant functions. The procedure was implemented using a joint transform correlator equipped with a single inexpensive spatial light modulator. Experimental results demonstrate efficient two-class discrimination.

Linear Disciminant Analysis is in general unable to find the lower-dimensional feature space which maximizes the class discrimination, even if the class distributions can be assumed to be very simple, e.g. Gaussians with identical covariance matrices. In this paper we reformulate the K-class Fisher criterion as a sum of K(K 1)=2 2-class Fisher criteria. This formulation allows to weigh class pa...

Background Persons living with HIV often face discrimination in safe sex and reproductive choices, especially in lowresource settings. This study assessed fertility desires and intentions, risk perception and correlates of ever use of at least one safer conception method among HIV-infected women attending a tertiary health facility ...

Various stimulus types have been investigated in pitch discrimination and pitch matching tasks. However, previous studies have not explored the use of recorded samples of an individual's own voice in performing these two tasks. The purpose of this study was to investigate pitch discrimination and pitch matching abilities using three stimuli conditions (participant's own voice, a neutral female ...

OBJECTIVE To investigate how anti-discrimination legislation in the form of the UK Disability Discrimination Act (DDA) affected socioeconomic disparities in the employment rates of people with a limiting long-term illness (LLTI) or disability. DESIGN National cross-sectional data on employment rates for people with and without an LLTI or disability were obtained from the General Household Sur...