Comparison of Feature Selection Methods for Sentiment Analysis on Turkish Twitter Data

25th Signal Processing and Communications Applications Conference (SIU) -- MAY 15-18, 2017 -- Antalya, TURKEYWOS: 000413813100251The Internet and social media provide a major source of information about people's opinions. Due to the rapidly growing number of online documents, it becomes both time-consuming and hard task to obtain and analyze the desired opinionated information. Sentiment analysis is the classification of sentiments expressed in documents. To improve classification perfromance feature selection methods which help to identify the most valuable features are generally applied. In this paper, we compare the performance of four feature selection methods namely Chi-square, Information Gain, Query Expansion Ranking, and Ant Colony Optimization using Maximum Entropi Modeling classification algorithm over Turkish Twitter dataset. Therefore, the effects of feature selection methods over the performance of sentiment analysis of Turkish Twitter data are evaluated. Experimental results show that Query Expansion Ranking and Ant Colony Optimization methods outperform other traditional feature selection methods for sentiment analysis.Turk Telekom, Arcelik A S, Aselsan, ARGENIT, HAVELSAN, NETAS, Adresgezgini, IEEE Turkey Sect, AVCR Informat Technologies, Cisco, i2i Syst, Integrated Syst & Syst Design, ENOVAS, FiGES Engn, MS Spektral, Istanbul Teknik Uni

A case of plantar localization of juvenile xanthogranuloma and review of the literature

Yucelten, Deniz/0000-0002-4251-0581; Demirkesen, Cuyan/0000-0002-3045-9942;WOS: 000388299400009Juvenile xanthogranuloma (JXG) is the most common type of non-Langerhans cell histiocytosis. The most common sites for development are the head and neck, and peripheral involvement is rare. Here, we present a 19-month-old patient who had a plantar lesion that did not clinically look to be JXG but received a histopathological diagnosis and review of the relevant literature

Impact of psoriasis in the quality of life of children, adolescents and their families: a cross-sectional study

Abstract: Background: Psoriasis is a chronic and inflammatory disease that impairs quality of life and causes psychological symptoms. Despite the high prevalence of psoriasis in pediatric patients, studies investigating the impact of psoriasis in the quality of life of children, adolescents and families are sparse. Objective: To investigate the impact of psoriasis in the quality of life of children and adolescents with psoriasis and their families and to determine depression and anxiety levels of the patients. Methods: A total of 58 patients with psoriasis aged 7-18 years (median age: 11) and a family member of each patient were included in the study. Children's Dermatology Life Quality Index (CDLQI), Family Dermatology Life Quality Index (FDLQI), Children's Depression Inventory (CDI) and State-Trait Anxiety Inventory for Children (STAIC) were used in the study. Results: The median PASI score of the patients included in the study was 1.8. The median CDLQI and FDLQI scores in the study groups were 5 and 10, respectively. The median CDI score, STAIC-state and STAIC-trait scores of the patients were 6, 28 and 32.5, respectively. Study limitations: Lack of a control group and patient assessment of disease severity. Relatively mild disease severity of the subjects. Conclusions: Psoriasis has a negative impact in the quality of life of children, adolescents and their families, even in the presence of mild disease. Considering that impairment in quality of life may be associated with psychosocial morbidity, a combined approach with medical therapy, family counseling and quality of life assessment may be beneficial in this patient group

Neutrophil gelatinase-associated lipocal in protein levels as an acute appendicitis biomarker in children

WOS: 000371416800009PubMed ID: 27026889Objective: Appendicitis is very commonly encountered in emergency clinics. There is an urgent need for early and accurate predictive biomarkers of appendicitis in order to save lives, because currently-available biomarkers are imprecise and their delayed response impairs the ability of emergency doctors and pediatric surgeons to provide timely and potentially effective therapies. This study was performed to determine whether changes in the blood levels of neutrophil gelatinase-associated lipocalin (NGAL) can help to diagnose acute appendicitis in children and distinguish acute appendicitis from abdominal pain. Methods: Sixty children were enrolled and divided into three groups, with 20 patients per group: Group 1 (patients with appendicitis), Group 2 (patients with abdominal pain) and Group 3 (control). Blood NGAL levels were determined by ELISA. Results: The basal average serum NGAL levels were 8.2 ng/ml for Group 1, 3.9 ng/ml for Group 2, and 3.3 ng/ml for Group 3. Twenty-four and 72 h after surgery the levels were 5.1 and 2.8 ng/ml, respectively, in Group 1, 2.9 and 2.8 ng/ml in Group 2, and 2.6, 2.7 ng/ml in Group 3. Setting the cut-off point to 7 generated an area under the receiving operating curve (ROC) curve at 95 % confidence interval with 77.3 % sensitivity and 97.4 % specificity. Conclusion: These data indicate a significant difference in NGAL values between basal and postoperative measurements in appendicitis patients (p < 0.05). The ROC curve results showed that NGAL is a promising novel biomarker for the differential diagnosis of acute appendicitis from abdominal pain.FUBAP (Firat University Research Fund)Firat University [TF.12.35-2012]We would like to thank the FUBAP (Firat University Research Fund) coordinator ship (Project No: TF.12.35-2012) for financial support. We also thank Dr. Nurhan Halisdemir and Dr. Emrah Firat for statistical analysis

Atypical presentations of eosinophilic fasciitis

Eosinophilic fasciitis is an uncommon connective tissue disease that may mimic and overlap with other sclerosing disorders such as morphea and lichen sclerosus. Herein, we report four patients (two men and two women, aged 16-64 yeas) with eosinophilic fasciitis. There was overlap with both morphea and lichen sclerosus in 2 patients and with morphoea alone in 1 patient. Magnetic resonance imaging (MRI) was used for diagnosis in three patients and for assessing treatment response in one patient. Eosinophilic fasciitis may co-exist with morhoea and lichen sclerosus. In view of the overlapping clinical and histopathological features of these disorders, MRI may be helful in delineating the conditions by detecting involvement of fascia

Geological evolution of a tectonic and climatic transition zone: the Beysehir-Sugla basin, lake district of Turkey

*Gürbüz, Esra ( Aksaray, Yazar )Central-west Turkey is a transition zone both tectonically and climatically between the quite different central and western regions of Anatolia. Central Anatolia represents the seismically quiet part of the otherwise highly active Turkey. On the other hand, this region has some of the lowest precipitation and highest evaporation ratios of Turkey. Conversely, west Anatolia is one of the most rapidly extending regions of the world and seismically very active. The climate is very different from the central part of Turkey and more humid. The zone between these two regions is also known geologically as the Isparta Angle. This reverse-V-shaped fold and thrust belt has several lake basins today, which have archived the geological and geomorphological history of this tectonic and climatic transition zone. The Beysehir-Sugla basin is located on the eastern part of this zone. This NW-SE trending basin includes the largest natural freshwater lake of the Mediterranean region: Lake Beysehir. Lakes Beysehir and Sugla are located in this tectonic depression that discharge into an incised river gorge opening to the Konya closed basin. In order to shed light on the development of the Beysehir-Sugla basin, our study was mainly conducted within the Neogene and Quaternary units of the region. Our structural results indicate that the depression was probably formed by a transtensional regime in the middle Miocene, which is controlled by extensional tectonics since the early Quaternary. Also, the current depression has mainly embodied the structures that are the products of these tectonic phases. According to our sedimentary data and palaeoecological interpretation of available palaeontological data, the Beysehir-Sugla basin was developed initially under a humid and warm climate in the middle Miocene; then since the late Miocene-Pliocene it was controlled by a relatively more arid and, at times, humid climate more like the central Anatolian basins. Although the Beysehir-Sugla basin is hydrologically connected to the Konya closed basin in central Anatolia, it was protected from arid climatic conditions for over millions of years as evidenced by the lack of evaporites in the studied basin and surrounding basins located in the interior part of the Isparta Angle. While the regional climate seems to have changed consistently with the geomorphic response to large-scale tectonics (i.e. orographic barrier development), the Beysehir-Sugla basin seems to be protected from hydrological closure by the existence of karstic features in the surrounding carbonate basement rocks

Preliminary Results of Auditory Brainstem Implantation in Prelingually Deaf Children With Inner Ear Malformations Including Severe Stenosis of the Cochlear Aperture and Aplasia of the Cochlear Nerve

Objective: The aim of our study is to present the results of 11 children where auditory brainstem implantation (ABI) was successfully performed to restore hearing