Correctional agencies face increasing pressure to provide more services for increasing caseloads with fewer resources. The Level of Service Inventory-Revised (LSI-R) is a risk/need assessment instrument that was designed to assist correctional agencies in classifying offenders based upon risk of re-offending, thereby allowing agencies to assign appropriate levels of risk/need and develop interv...

Latent semantic indexing (LSI) is a popular technique used in information retrieval (IR) applications. This paper presents a novel evaluation strategy based on the use of image processing tools. The authors evaluate the use of the discrete cosine transform (DCT) and Cohen Daubechies Feauveau 9/7 (CDF9/7) wavelet transform as a preprocessing step for the singular value decomposition (SVD) step o...

In translingual information retrieval (TIR), ad hoc queries in any of a set of languages can be used to retrieve documents in any of a set of languages. Classical informationretrieval methods such as the vector-space model cannot be applied to TIR because they base similarity on the overlap of terms between queries and documents|this is typically zero in TIR. The generalized vector-space model ...

Latent Semantic Indexing (LSI) has been employed to reduce dimension of indices of documents for similarity search. In this paper, we will describe a method for retrieving conceptually similar patents first by categorizing patent collection and then by applying LSI algorithm multiple times to each category. The main strategy is keeping the algorithm as simple as possible, while achieving the sc...

Spectral Graph Transducer(SGT) is one of the superior graph-based transductive learning methods for classification. As for the Spectral Graph Transducer algorithm, a good graph representation for data to be processed is very important. In this paper, we try to incorporate Latent Semantic Indexing(LSI) into SGT for text classification. Firstly, we exploit LSI to represent documents as vectors in...

Consumers’ purchase decisions are increasingly influenced by user-generated online reviews. Accordingly, there has been growing concern about the potential for posting deceptive opinion spam fictitious reviews that have been deliberately written to sound authentic, to deceive the readers. Existing approaches mainly focus on developing automatic supervised learning based methods to help users id...

We assess the Latent Semantic Indexing (LSI) approach to Chinese information filtering. In particular, the approach is for Chinese news filtering agents that use a character-based and hierarchical filtering scheme. The traditional vector space model is employed as an information filtering model, and each document is converted into a vector of weights of terms. Instead of using words as terms in...