A formalism and method for representing and reasoning with process models authored by subject matter experts

Enabling Subject Matter Experts (SMEs) to formulate knowledge without the intervention of Knowledge Engineers (KEs) requires providing SMEs with methods and tools that abstract the underlying knowledge representation and allow them to focus on modeling activities. Bridging the gap between SME-authored models and their representation is challenging, especially in the case of complex knowledge types like processes, where aspects like frame management, data, and control flow need to be addressed. In this paper, we describe how SME-authored process models can be provided with an operational semantics and grounded in a knowledge representation language like F-logic in order to support process-related reasoning. The main results of this work include a formalism for process representation and a mechanism for automatically translating process diagrams into executable code following such formalism. From all the process models authored by SMEs during evaluation 82% were well-formed, all of which executed correctly. Additionally, the two optimizations applied to the code generation mechanism produced a performance improvement at reasoning time of 25% and 30% with respect to the base case, respectively.

Bayesian network modeling of the consensus between experts: an application to neuron classification

Neuronal morphology is hugely variable across brain regions and species, and their classification strategies are a matter of intense debate in neuroscience. GABAergic cortical interneurons have been a challenge because it is difficult to find a set of morphological properties which clearly define neuronal types. A group of 48 neuroscience experts around the world were asked to classify a set of 320 cortical GABAergic interneurons according to the main features of their three-dimensional morphological reconstructions. A methodology for building a model which captures the opinions of all the experts was proposed. First, one Bayesian network was learned for each expert, and we proposed an algorithm for clustering Bayesian networks corresponding to experts with similar behaviors. Then, a Bayesian network which represents the opinions of each group of experts was induced. Finally, a consensus Bayesian multinet which models the opinions of the whole group of experts was built. A thorough analysis of the consensus model identified different behaviors between the experts when classifying the interneurons in the experiment. A set of characterizing morphological traits for the neuronal types was defined by performing inference in the Bayesian multinet. These findings were used to validate the model and to gain some insights into neuron morphology.

Evidence of expert’s evidence is evidence

Date of Acceptance: 06/06/2015

The Evaluation of Forensic DNA Evidence*

The following is an excerpt from the Executive Summary of the National Research Council Report.

Reconstrução facial forense: comparação entre tabelas de espessuras de tecidos moles faciais

As Ciências Forenses empregam a técnica de Reconstrução Facial buscando aumentar as possibilidades de reconhecimento humano. Após análise antropológica, a face é esculpida sobre o crânio esqueletizado e divulgada na mídia. Existem várias metodologias para a modelagem do rosto e das características da face, bem como vários dados de espessuras de tecidos moles que auxiliam no contorno facial. Com o intuito de investigar se existe uma metodologia que favoreça mais reconhecimentos e que permita uma maior semelhança com o indivíduo, este trabalho buscou comparar reconstruções faciais manuais feitas com duas abordagens para o preenchimento dos tecidos moles (métodos Americano e de Manchester) e para a predição dos olhos, nariz, boca e orelhas. Também buscou comparar reconstruções realizadas com quatro tabelas de espessuras de tecidos moles, desenvolvidas para brasileiros por estudos prévios, observando a possibilidade de unir esses dados para auxiliar na reconstrução. Um quarto objetivo foi averiguar se existe influência do sexo e do conhecimento anatômico ou forense na frequência de reconhecimentos. O estudo foi dividido em duas fases. Na primeira, duas reconstruções foram realizadas para dois indivíduos alvos (um homem e uma mulher) com os métodos Americano e de Manchester, aplicando dois guias para olhos, nariz, boca e orelhas. As reconstruções foram avaliadas por quarenta indivíduos (homens e mulheres, divididos em 4 grupos - alunos de graduação em Odontologia que não passaram pela disciplina de Odontologia Legal, alunos de graduação em Odontologia que passaram pela disciplina, especialistas em Odontologia Legal e indivíduos que não possuíam conhecimento de anatomia humana) por meio dos testes de reconhecimento e semelhança. Para o alvo feminino, as frequências de reconhecimentos foram 20% e 10% para os métodos Americano e de Manchester, respectivamente; para o alvo masculino, as frequências foram 35% e 17,5%. Em relação à semelhança, as medianas foram menores que 3 (em uma escala de 1 a 5); entretanto, foi verificada uma exceção para a escultura feita com o método Americano para o alvo masculino, a qual apresentou mediana 3. Na segunda fase, reconstruções faciais para quatro alvos (dois homens e duas mulheres) foram obtidas com o método Americano, considerando as quatro tabelas de espessuras de tecidos moles para brasileiros. Dezesseis reconstruções foram avaliadas por cento e vinte indivíduos, também pelos testes de reconhecimento e semelhança. Assim como na fase I, foram considerados o sexo e o grupo dos avaliadores. Para o alvo 1, as proporções de acertos são significativamente maiores para reconstruções feitas com as tabelas de cadáveres (44% e 38%) em relação às com os dados de exames de imagem. Para o alvo 4, as proporções de acertos com os dados de cadáveres (Tedeschi-Oliveira et al.) e com os de ressonância magnética foram significativamente maiores comparados às reconstruções com dados de tomografias computadorizadas. Em relação à semelhança, somente o alvo 1 mostrou diferenças significativas de frequências de semelhança leve entre reconstruções. Além disso, não houve influência nem do sexo, nem do conhecimento de anatomia nas frequências de reconhecimentos corretos. Espera-se que a tabela proposta possa ser empregada para a população brasileira.

Análise hierárquica de processo aplicada a um sistema de cadastramento de peritos.

O cadastramento de peritos cíveis junto ao Poder Judiciário atualmente não é feito eletronicamente e o rol de profissionais não é divulgado pela internet, sendo necessário que os profissionais se cadastrem pessoalmente em cada fórum. Também não existe atualmente uma avaliação dos trabalhos periciais realizados, o que faz com que o resultado dos trabalhos periciais, ou seja, o laudo pericial tenha muitos defeitos e acabe por não ter a qualidade necessária para auxiliar o juiz em sua tomada de decisão. Após a realização de uma pesquisa com peritos sobre suas impressões quanto à forma de cadastramento atualmente utilizada, aplicou-se o método Analytic Hierarchy Process (AHP) para auxiliar na identificação do perfil dos profissionais que desejam modificações no sistema. Foram então feitas observações e sugestões para que este modelo atualmente utilizado seja modificado e possa assim atender aos princípios constitucionais da publicidade, eficiência e finalidade.

Guidelines for Forensic Report Writing: Helping Trainees Understand Common Pitfalls to Improve Reports

A forensic report is the primary work product of a forensic psychologist. The aim of a forensic report is to inform and influence the court. Unlike a clinical report, a forensic report influences the outcome of a legal conflict. This means that greater care must be taken in writing the report. The following errors (Grisso, 2010) were used to discuss best practices in forensic report writing: failure to answer the referral question, organization problems, language problems, mixed data and interpretation, inclusion of irrelevant data, over-reliance on a single source of data, improper psychological test use, failure to consider alternative hypotheses, and opinions without sufficient explanation. The purpose of this paper is to provide in one place all the information needed to improve forensic report writing, and to help the reader apply the literature using specific examples. Redacted report samples were collected from psychologists, graduate psychology trainees, teaching assistant experience, and clinical work. Identified errors in these samples were then corrected using the recommendations in the literature. Geared toward graduate psychology trainees, each section should serve both as a tutorial and as a brief checklist to help the reader avoid common pitfalls and assist in promoting better forensic report writing.

Acceptance and Commitment Therapy with Forensic Inpatients

This paper provides a preliminary exploration of the application of Acceptance and Commitment Therapy (ACT) within the context of a forensic hospital. ACT has a reputation for being a clinically flexible and empirically sound therapeutic intervention, which appears uniquely suited for forensic hospital settings. However, no research has been published to date on the use of ACT as a treatment for forensic inpatients. The ACT approach directly aims to help people let go of the unwinnable struggles to control symptoms of mental illness, and instead focus on constructing a "life worth living." ACT interventions can equip forensic patients with the values and flexible behavioral repertoires necessary to lead lives that are personally meaningful and satisfying and do not involve inflicting harm to others. The ACT model also attempts to minimize the therapist-patient hierarchy through an emphasis on the ubiquitous nature of human suffering. This approach can be particularly useful when working with marginalized, treatment-resistant patients. Continued research on the application of ACT with forensic inpatients is recommended.

Trauma Treatment in Forensic Settings: Clinicians' Perspectives, Barriers to Effective Treatment, and Suggestions for Clinical Practice

Between 30% and 90% of the prison population is estimated to have survived traumatic experiences such as sexual, emotional, and physical abuse prior to incarceration (Anonymous, 1999; Fondacaro, Holt, & Powell, 1999; Messina & Grella, 2006; Pollard & Baker, 2000; Veysey, De Cou, & Prescott, 1998). Similarly, information from the Bureau of Justice Statistics (as reported in Warren, 2001) estimated that more than half of the women in state prisons have experienced past physical and sexual abuse. Thus, given the astonishing number of inmates who appear to be victims of some kind of trauma, it seems likely that those who work with these inmates (e.g., prison staff, guards, and treatment providers) will in some way encounter challenges related to the inmates' trauma history. These difficulties may appear in any number of forms including inmates' behavioral outbursts, increased emotionality, sensitivity to triggering situations, and chronic physical or mental health needs (Veysey, et al., 1998). It is also likely that these individuals with trauma histories would benefit greatly from treatment while incarcerated. This treatment could be utilized to minimize symptoms of posttraumatic stress, decrease behavioral problems, and help the inmate function more effectively in society when released from incarceration (Kokorowski & Freng, 2001; Tucker, Cosio, Meshreki, 2003). Few studies have explored the types of trauma treatment that are effective with inmate populations or made specific suggestions for clinicians working in forensic settings (Kokorowski & Freng, 2001). Essentially, there appears to be a large gap in terms of the need for trauma treatment for inmates and the lack of literature addressing what to do about it. However, clinicians across the country seem to be quietly attempting to fulfill this need for trauma treatment with incarcerated populations. They are providing this greatly needed treatment every day. in the face of enormous challenges and often without recognition or the opportunity to share their valuable work with the larger community.

The Use of Therapeutic Assessment with Forensic Populations: Practitioners' Perspectives

Therapeutic Assessment is a semi-structured approach to collaborative assessment developed by Stephen E. Finn and colleagues. In Therapeutic Assessment, psychological assessment is used as a therapeutic intervention (Finn, 2007; Finn & Kamphuis, 2006). The Therapeutic Assessment model differs from traditional assessment with regard to procedure and the roles of both assessor and client. Therapeutic Assessment has yet to be explored in forensic settings, wherein assessors are required to take on a number of varying and conflicting roles. In the current study, five forensic psychologists completed a semi-structured interview to identify their perspectives of Therapeutic Assessment and its utility in forensic contexts. A phenomenological qualitative analysis of the interviews was conducted to derive themes about Therapeutic Assessment, forensic psychology, and the overlap between these two domains. General themes that emerged include (a) the role and the context of the practitioner's work with the forensic population; (b) the potential of using Therapeutic Assessment's paradigm in family law settings; and (c) the increased risk of harm when using Therapeutic Assessment with forensic populations. In addition to these themes, multiple respondents discussed components of collaborative/Therapeutic Assessment that they have found useful with this population. Finally, the implications of these results are discussed.