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We present a fully automatic and weighted dictionary to be used in topical opinion retrieval. We also define a simple topical opinion retrieval function that is free from parameters, so that the retrieval does not need any learning or tuning phase.

- Michele Flammini, Giorgio Gambosi, Umberto Nanni, Richard B. Tan
- Theor. Comput. Sci.
- 1995

Interval Routing Scheme (k-IRS) is a compact routing scheme on general networks. It has been studied extensively and recently been implemented on the latest generation INMOS Transputer Router chip. In this paper we introduce an extension of the Interval Routing Scheme k-IRS to the multi-dimensional case hk; di-MIRS, where k is the number of intervals and d… (More)

- Paolo Giulio Franciosa, Giorgio Gambosi, Umberto Nanni
- Inf. Process. Lett.
- 1997

We propose an incremental algorithm to maintain a DFS-forest in a directed acyclic graph under a sequence of arc insertions in 0( nm) worst case total time, where n is the number of nodes and m is the number of arcs after the insertions. This compares favorably with the time required to recompute DFS from scratch by using Tarjan’s O( R + m) algorithm any… (More)

- Giorgio Gambosi, Alberto Postiglione, Maurizio Talamo
- SIAM J. Comput.
- 2000

- Michele Flammini, Giorgio Gambosi, Sandro Salomone
- Algorithmica
- 1995

In this paper the problem of routing messages along shortest paths in a distributed network without using complete routing tables is considered. In particular, the complexity of deriving minimum (in terms of number of intervals) interval routing schemes is analyzed under different requirements. For all the cases considered NP-hardness proofs are given,… (More)

- Gianni Amati, Giuseppe Amodeo, +7 authors Michele Flammini
- TREC
- 2011

- Giuseppe Amodeo, Gianni Amati, Giorgio Gambosi
- CIKM
- 2011

We present the results of our exploratory analysis on the relationship that exists between relevance and time. We observe how the amount of documents published in a given interval of time is related to the probability of relevance, and, using the time series analysis, we show the existence of a correlation between time and relevance. As an initial… (More)

- Pierluigi Crescenzi, Giorgio Gambosi, Paolo Penna
- DIAL-M
- 2000

We consider the on-line channel assignment problem in the case of cellular networks and we formalize this problem as an on-line load balancing problem of temporary tasks with restricted assignment. For the latter problem, we provide a general solution (denoted as the cluster algorithm) and we characterize its competitive ratio in terms of the combinatorial… (More)

- Michele Flammini, Giorgio Gambosi, Sandro Salomone
- WDAG
- 1993

This paper reports the experience of the development and the evaluation of a set of pre-competitive tools to support legal professionals in exploring a complex corpus of norms and documents in the legal domain. The research addresses two complementary goals: using ICT to support the simplification of the corpus of norms and using ICT to facilitate search… (More)