Discriminative probabilistic models are very popular in NLP because of the latitude they afford in designing features. But training involves complex trade-offs among weights, which can be dangerous: a few highlyindicative features can swamp the contribution of many individually weaker features, causing their weights to be undertrained. Such a model is less robust, for the highly-indicative feat...

In this paper we study the problem of product search, where products are retrieved and ranked based on how their reviews match the query. Current product search systems suffer from the incapability to measure correspondence between a product feature and its desired property. A proximity language model is presented to embed textual adjacency in the frequency based estimation framework. To tailor...

Apart from adoption strategies, an existing Software Product Line (SPL) implemented using some variability mechanisms can be migrated to use another variability mechanism. In this paper, we present some migration strategies from one SPL implemented with conditional compilation to one using Aspect-Oriented Programming (AOP). The strategies present a variability pattern handled by the first mecha...

Technology and market changes introduce uncertainty and equivocality in the product development arena, and firms are considering various structural relationships to help them cope with these changes. Concurrent engineering (CE) is a mechanism that can reduce uncertainty and equivocality and improve an organization’s competitive capabilities. CE is typically manifested through concurrent work-fl...

Background Children that livingwith addicted parents are at risk for intentionally and unintentionally poisoning. Present study aimed to evaluate the effect of parental addiction on unintentional childhood poisoning. Materials and Methods: Totally, 140 admitted children with poisoning in Loghman hospital, Tehran-Iran, as referral center were recruited from March 2013 to July 2014. Cases were ma...

The Ultra-nanocrystalline diamond (UNCD) was synthesized by the detonation of a high explosive mixture in water confinement. The presence of a diamond phase was revealed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). X-ray line broadening (XRLB) was used to evaluate the peak profiles of diamond nanoparticles and their corresponding average crystallite sizes. The micro st...

A conditional CSP is a well known formalism for managing constraints in a dynamic environment where the possible changes are known a priori and can be enumerated beforehand. In this paper we argue that mixing preferences with Conditional CSPs brings more intuitive meaning to many real world applications. For example, in a product configuration problem the user preferences often co-exist with th...

Chemical patents contain detailed information on novel chemical compounds that is valuable to the chemical and pharmaceutical industries. In this paper, we introduce a system, NERChem that can recognize chemical named entity mentions in chemical patents. NERChem is based on the conditional random fields model (CRF). Our approach incorporates (1) class composition, which is used for combining ch...

Having set up reusable core assets for a software Product Line (SPL), it is a common practice to apply variation mechanisms to manage variant features. As each variation mechanism can handle only certain type of variability, multiple variation mechanisms are often employed, such as conditional compilation, configuration parameters or build tools. Our earlier study of an SPL at Fudan Wingsoft Lt...

Having set up reusable core assets for a Software Product Line (SPL), it is a common practice to apply Variation Techniques (VTs) to manage variant features. As each VT can handle only certain types of variability, multiple VTs are often employed, such as conditional compilation, configuration parameters or build tools. Our earlier study of an SPL at Fudan Wingsoft Ltd revealed potential scalab...