Emanuele Panzeri

PatentLight: a patent search application

Patent retrieval is a complex challenging task; despite of the numerous patent search applications, more flexible solutions are needed to help users to easily identify relevant patents. This paper presents the PatentLight search tool that offers novel and flexible functionalities to help users looking for relevant patents represented in the XML format.

An approach to define flexible structural constraints in XQuery

This paper presents a formal definition of an extension of the XQuery Full-Text language: the proposed extension consists in adding two new flexible axes, named below and near, which express structural constraints that can be specified by the user. Both constraints are evaluated in an approximate way with respect to a considered path, and their evaluation produces a path relevance score for each retrieved element. The formal syntax and the semantics of the two new axis are presented and discussed.

A semantic and information retrieval based approach to service contract selection

Service contracts represent the agreement between the service provider and potential service consumers to use a specific service under given conditions; for each service multiple service contracts are available. In this paper we investigate a new approach to support the service contract selection by exploiting preferences both explicitly defined by a user and implicitly inferred from his/her context. The core of our approach is the use of multi-constraint queries expressed on punctual values and on textual descriptions. Both semantic-based and information retrieval (IR) techniques are applied. Experimental evaluations show the effectiveness of the proposed approach.

Flex-BaseX: an XML engine with a flexible extension of Xquery full-text

XML is the most used language for structuring data and documents, besides being the de-facto standard for data exchange. Keyword based search has been implemented by the XQuery Full-Text language extension, allowing document fragments to be retrieved and ranked via keyword-based matching in the Information Retrieval style. In this demo the implementation of an XQuery extension allowing users to express their vague knowledge of the underlying XML structure is presented. The integration has been performed on top of the BaseX query engine; the work, as initially done by Panzeri at al. in IIR 2013 as a proof-of-concept has been further enhanced and extended.

An analysis of an efficient data structure for evaluating flexible constraints on XML documents

In this work we describe and evaluate an efficient data structure developed to deal with an extension of the XPath language that allows the specification of flexible constraints on both the textual content and the document structure of XML documents. Our approach is based on an inverted file representation of XML documents where both structure and content are taken into account. The proposed approach is described, as well as its implementation, by particularly addressing the problem of offering an efficient evaluation of structure-based flexible constraints.

Towards the Design of an Advanced Knowledge-Based Portal for Enterprises: The KBMS 2.0 Project

This paper presents the KBMS 2.0 Project, a system that is aimed at managing and searching information effectively. The idea is to leverage the information stored in any enterprise to support users during their interactions with the defined portal. The advanced portal has been developed to help users in finding information related to their information needs with the use of a friendly user interface. This task has been done by considering two key aspects: 1 context, and 2 personalization, respectively. Contextual information allows to filter out knowledge not related to users, whereas personalization aspects have been used to support users during their searches by considering user preferences and user activities.