Users' behavioral footprints online enable firms to discover behavior-based user segments (or, segments) and deliver segment specific messages to users. Following the discovery of segments, delivery ...of messages to users through preferred media channels like Facebook and Google can be challenging, as only a portion of users in a behavior segment find match in a medium, and only a fraction of those matched actually see the message (exposure). Even high quality discovery becomes futile when delivery fails. Many sophisticated algorithms exist for discovering behavioral segments; however, these ignore the delivery component. The problem is compounded because (i) the discovery is performed on the behavior data space in firms' data (e.g., user clicks), while the delivery is predicated on the static data space (e.g., geo, age) as defined by media; and (ii) firms work under budget constraint. We introduce a stochastic optimization based algorithm for delivery optimized discovery of behavioral user segmentation and offer new metrics to address the joint optimization. We leverage optimization under a budget constraint for delivery combined with a learning-based component for discovery. Extensive experiments on a public dataset from Google and a proprietary dataset show the effectiveness of our approach by simultaneously improving delivery metrics, reducing budget spend and achieving strong predictive performance in discovery.
Subcutaneous mycoses caused by the family Entomophthoraceae is very rare type of disease and is being reported sporadically from various Tropical countries including India. Here we report 8 cases of ...rhinoentomophthoromycosis caused by Conidiobolous coronatus and 7 cases of chronic subcutaneous phycomycosis caused by Basidiobolus ranarum. Cases were detected during a span of 9 years between 1991 to 1999, from 9 districts in and around Kolkata (Eastern India). Former type of lesions were detected among 20 to 65 age group of healthy individuals, predominantly males (7:1). In the latter type, male-female ratio was 2:5, and except for one all cases belonged to below 20 years age group of healthy individuals. Several cases were detected only after examination of repeat biopsy samples. With high degree of clinical suspicion, right approach is needed for laboratory confirmation of diagnosis.
Neonatal candidemia Roy, A; Maiti, P K; Adhya, S ...
Indian journal of pediatrics,
11/1993, Letnik:
60, Številka:
6
Journal Article
Recenzirano
Fifty five clinically diagnosed cases of neonatal septicaemia of the nursery ward, Medical College Hospital Calcutta were subjected to blood culture on two consecutive days in all cases. Bacterial ...isolates were found in 34 (61.8%) cases as pure growth and candida species from 9 (16.4%) as pure culture. Remaining 12 samples did not yield any growth. Species distribution of candida showed C. albicans 6, C. parapsilosis 2, and C. guillermondii 1. Asphyxia neonatorum was the common feature in all cases of candidaemia. All neonates with candidal infection were low-birth-weight and premature. C. albicans, the predominant species (66.6%) recovered, was responsible for a localised outbreak of infection in the nursery.
