| 1. |
- Andersson, S.-O., et al.
(författare)
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The criteria nurses use in assessing acute trauma in military emergency care
- 2007
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Ingår i: Accident and Emergency Nursing. - : Elsevier BV. - 0965-2302 .- 1532-9267. ; 15:3, s. 148-156
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Tidskriftsartikel (refereegranskat)abstract
- Emergency medical care for seriously injured patients in war or warlike situations is highly important when it comes to soldiers' survival and morale. The Swedish Armed Forces sends nurses, who have limited experience of caring for injured personnel in the field, on a variety of international missions. The aim of this investigation was to identify the kind of criteria nurses rely on when assessing acute trauma and what factors are affecting the emergency care of injured soldiers. A phenomenographic research approach based on interviews was used. The database for the study consists of twelve nurses who served in Bosnia in 1994-1996. The criteria nurses rely on, when assessing acute trauma in emergency care, could be described in terms of domain-specific criteria such as a physiological, an anatomical, a causal and a holistic approach as well as contextual criteria such as being able to communicate, having a sense of belonging, the military environment, the conscript medical orderly and familiarity with health-caring activity. The present study shows that the specific contextual factors affecting emergency care in the field must also be practised before the nurse faces military emergency care situations. This calls for realistic exercises and training programs, where experience from civilian emergency care is interwoven with the knowledge specific to military medical care. © 2007 Elsevier Ltd. All rights reserved.
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| 2. |
- Hammarlund, Kina, et al.
(författare)
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To contract genital warts – a risk of losing love? : Experiences of Swedish men living with genital warts
- 2007
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Ingår i: International Journal of Men's Health. - : Men's Studies Press. - 1532-6306 .- 1933-0278. ; 6:2, s. 100-114
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Tidskriftsartikel (refereegranskat)abstract
- Using a life-world hermeneutic approach, this study focused on the interviews with eight Swedish men living with genital warts. The men expressed a need for control over their situation, a control that was easier to maintain if the warts were invisible. Some of the men expressed prejudiced attitudes toward those who contract a venereal infection and their own feelings of shame appeared to correlate with these prejudices. In their meetings with health care providers, the men viewed a competent health care provider as someone who combined professional distance with a personal approach. Finally, the fact that men saw themselves as disease carriers was of great significance to them and influenced their views of future meaningful relationships.
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| 3. |
- Johansson, Ulf, et al.
(författare)
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Inconsistency : Friend or Foe
- 2007
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Ingår i: The International Joint Conference on Neural Networks. - : IEEE Press. - 142441380X - 9781424413805 - 9781424413799 ; , s. 1383-1388
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- One way of obtaining accurate yet comprehensible models is to extract rules from opaque predictive models. When evaluating rule extraction algorithms, one frequently used criterion is consistency; i.e. the algorithm must produce similar rules every time it is applied to the same problem. Rule extraction algorithms based on evolutionary algorithms are, however, inherently inconsistent, something that is regarded as their main drawback. In this paper, we argue that consistency is an overvalued criterion, and that inconsistency can even be beneficial in some situations. The study contains two experiments, both using publicly available data sets, where rules are extracted from neural network ensembles. In the first experiment, it is shown that it is normally possible to extract several different rule sets from an opaque model, all having high and similar accuracy. The implication is that consistency in that perspective is useless; why should one specific rule set be considered superior? Clearly, it should instead be regarded as an advantage to obtain several accurate and comprehensible descriptions of the relationship. In the second experiment, rule extraction is used for probability estimation. More specifically, an ensemble of extracted trees is used in order to obtain probability estimates. Here, it is exactly the inconsistency of the rule extraction algorithm that makes the suggested approach possible.
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| 4. |
- Johansson, Ulf, et al.
(författare)
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The Importance of Diversity in Neural Network Ensembles : An Empirical Investigation
- 2007
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Ingår i: IJCNN 2007 Conference Proceedings. - : IEEE. - 9781424413799 - 9781424413805 - 142441380X - 142441380X ; , s. 661-666
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Konferensbidrag (refereegranskat)abstract
- When designing ensembles, it is almost an axiom that the base classifiers must be diverse in order for the ensemble to generalize well. Unfortunately, there is no clear definition of the key term diversity, leading to several diversity measures and many, more or less ad hoc, methods for diversity creation in ensembles. In addition, no specific diversity measure has shown to have a high correlation with test set accuracy. The purpose of this paper is to empirically evaluate ten different diversity measures, using neural network ensembles and 11 publicly available data sets. The main result is that all diversity measures evaluated, in this study too, show low or very low correlation with test set accuracy. Having said that, two measures; double fault and difficulty show slightly higher correlations compared to the other measures. The study furthermore shows that the correlation between accuracy measured on training or validation data and test set accuracy also is rather low. These results challenge ensemble design techniques where diversity is explicitly maximized or where ensemble accuracy on a hold-out set is used for optimization.
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| 5. |
- König, Rikard, et al.
(författare)
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Instance Ranking Using Ensemble Spread
- 2007
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Ingår i: Proceedings of the 2007 International Conference on Data Mining. - : CSREA Press. - 1601320310 - 9781601320315 ; , s. 73-78
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Konferensbidrag (refereegranskat)abstract
- This paper investigates a technique for predicting ensemble uncertainty originally proposed in the weather forecasting domain. The overall purpose is to find out if the technique can be modified to operate on a wider range of regression problems. The main difference, when moving outside the weather forecasting domain, is the lack of extensive statistical knowledge readily available for weather forecasting. In this study, three different modifications are suggested to the original technique. In the experiments, the modifications are compared to each other and to two straightforward technniques, using ten publicly available regression problems. Three of the techniques show promising result, especially one modification based on genetic algorithms. The suggested modification can accurately determine whether the confidence in ensemble predictions should be high or low.
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