Information Content Analysis and Clustering for Signal Anomaly Detection

2009 ◽  
Author(s):  
Mostafa Afgani ◽  
Harald Haas
Keyword(s):  
Content Analysis ◽  
Anomaly Detection ◽  
Information Content

IMAGE OF THE REPUBLIC OF MORDOVIA IN THE MEDIA VOLGA FEDERAL DISTRICT (BASED ON CONTENT ANALYSIS OF NEWS PUBLICATIONS)

2020 ◽  
Vol 10 (4) ◽  
pp. 44-52
Author(s):  
LARISA ZAITSEVA ◽  
Keyword(s):  
Content Analysis ◽  
Information Content ◽  
Federal District ◽  
Information Space ◽  
Political News ◽  
Social Sphere ◽  
The Media ◽  
The Republic ◽  
Number Of Publications

The territorial image is formed both purposefully by the subjects of image-making, and spontaneously-based on the influence of information content published in various media. The purpose of the research is to analyze the image of the Republic of Mordovia in the information space of the Volga Federal district. The image of the territory formed by external target audiences by means of news materials is studied using the method of case study and content analysis of publications: “Volga news”, “Federal Press” news of the PFD, “Pravda PFD”. The authors conclude that modern reality is perceived through the prism of the information field created by mass media. The media creates images filled with certain data, facts, colored by emotions, on the basis of which representations, opinions, judgments, and assessments are subsequently formed. The media play a significant role in shaping the territorial image, especially for external target audiences who are not familiar with the region and do not have their own assessment knowledge and experience. Most of the information content about the Republic in the studied media is related to the main thematic blocks: politics, economy, social sphere, culture (art, sports). Moreover, if in the publications “Volga news” and “Pravda PFD” mention of the region prevails in the economic block, then in the publications “Federal Press” and “Nezavisimaya Gazeta” - in the political one. The Volga news publication significantly dominates the rest in terms of the number of publications about Mordovia. The content of publications is mostly positive and neutral related to the issues of economic development of the territory and the preparation and holding of the world football championship. Pravda PFD mentions the Republic in the context of news from neighboring territories, most of the publications date back to 2018, but here the context is related to the Republic's positions among the regions of the PFD in various ratings. The publication “Federal-Press” forms a generally reflective image of the territory, focusing on the negative aspects of regional life. “Nezavisimaya Gazeta”, giving priority to political news, maintains a neutral and reflective context of publications, paying attention to the key problems of the territory. Thus, the desired image of the region is counter-dictated to the image broadcast by the media through various information channels, so it is necessary to constantly monitor the information space and timely correction of the broadcast materials.

scholarly journals Assessing the credibility of COVID-19 vaccine mis/disinformation in online discussion

2021 ◽  
pp. 016555152110406
Author(s):  
Reijo Savolainen
Keyword(s):  
Content Analysis ◽  
Information Content ◽  
Online Discussion ◽  
Qualitative Content Analysis ◽  
Discussion Group

This study examines how the credibility of the content of mis- or disinformation, as well as the believability of authors creating such information is assessed in online discussion. More specifically, the investigation was focused on the credibility of mis- or disinformation about COVID-19 vaccines. To this end, a sample of 1887 messages posted to a Reddit discussion group was scrutinised by means of qualitative content analysis. The findings indicate that in the assessment of the author’s credibility, the most important criteria are his or her reputation, expertise and honesty in argumentation. In the judgement of the credibility of the content of mis/disinformation, objectivity of information and plausibility of arguments are highly important. The findings highlight that in the assessment of the credibility of mis/disinformation, the author’s qualities such as poor reputation, incompetency and dishonesty are particularly significant because they trigger expectancies about how the information content created by the author is judged.

Logging Analysis and Prediction in Open Source Java Project

2021 ◽  
pp. 733-761
Author(s):  
Sangeeta Lal ◽  
Neetu Sardana ◽  
Ashish Sureka
Keyword(s):  
Machine Learning ◽  
Content Analysis ◽  
Software Development ◽  
Anomaly Detection ◽  
Open Source ◽  
Large Scale ◽  
Source Code ◽  
Scale Analysis ◽  
Large Scale Analysis ◽  
Research Questions

Log statements present in source code provide important information to the software developers because they are useful in various software development activities such as debugging, anomaly detection, and remote issue resolution. Most of the previous studies on logging analysis and prediction provide insights and results after analyzing only a few code constructs. In this chapter, the authors perform an in-depth, focused, and large-scale analysis of logging code constructs at two levels: the file level and catch-blocks level. They answer several research questions related to statistical and content analysis. Statistical and content analysis reveals the presence of differentiating properties among logged and nonlogged code constructs. Based on these findings, the authors propose a machine-learning-based model for catch-blocks logging prediction. The machine-learning-based model is found to be effective in catch-blocks logging prediction.

scholarly journals Soil moisture retrieval from multi-instrument observations: Information content analysis and retrieval methodology

2013 ◽  
Vol 118 (10) ◽  
pp. 4847-4859 ◽  
Author(s):  
J. Kolassa ◽  
F. Aires ◽  
J. Polcher ◽  
C. Prigent ◽  
C. Jimenez ◽  
...  
Keyword(s):  
Content Analysis ◽  
Soil Moisture ◽  
Information Content

scholarly journals Understanding the aerosol information content in multi-spectral reflectance measurements using a synergetic retrieval algorithm

2010 ◽  
Vol 3 (6) ◽  
pp. 1589-1598 ◽  
Author(s):  
D. Martynenko ◽  
T. Holzer-Popp ◽  
H. Elbern ◽  
M. Schroedter-Homscheidt
Keyword(s):  
Content Analysis ◽  
Information Content ◽  
Aerosol Optical Depth ◽  
Optical Depth ◽  
Degrees Of Freedom ◽  
Surface Albedo ◽  
Water Soluble ◽  
Retrieval Algorithm ◽  
Aerosol Types ◽  
Reflectance Measurements

Abstract. An information content analysis for multi-wavelength SYNergetic AErosol Retrieval algorithm SYNAER was performed to quantify the number of independent pieces of information that can be retrieved. In particular, the capability of SYNAER to discern various aerosol types is assessed. This information content depends on the aerosol optical depth, the surface albedo spectrum and the observation geometry. The theoretical analysis is performed for a large number of scenarios with various geometries and surface albedo spectra for ocean, soil and vegetation. When the surface albedo spectrum and its accuracy is known under cloud-free conditions, reflectance measurements used in SYNAER is able to provide for 2–4° of freedom that can be attributed to retrieval parameters: aerosol optical depth, aerosol type and surface albedo. The focus of this work is placed on an information content analysis with emphasis to the aerosol type classification. This analysis is applied to synthetic reflectance measurements for 40 predefined aerosol mixtures of different basic components, given by sea salt, mineral dust, biomass burning and diesel aerosols, water soluble and water insoluble aerosols. The range of aerosol parameters considered through the 40 mixtures covers the natural variability of tropospheric aerosols. After the information content analysis performed in Holzer-Popp et al. (2008) there was a necessity to compare derived degrees of freedom with retrieved aerosol optical depth for different aerosol types, which is the main focus of this paper. The principle component analysis was used to determine the correspondence between degrees of freedom for signal in the retrieval and derived aerosol types. The main results of the analysis indicate correspondence between the major groups of the aerosol types, which are: water soluble aerosol, soot, mineral dust and sea salt and degrees of freedom in the algorithm and show the ability of the SYNAER to discern between this aerosol types. The results of the work will be further used for the development of the promising methodology of the construction error covariance matrices in the assimilation system.

scholarly journals The Information Theoretic Approach to Signal Anomaly Detection for Cognitive Radio

2010 ◽  
Vol 2010 ◽  
pp. 1-18 ◽  
Author(s):  
Mostafa Afgani ◽  
Sinan Sinanović ◽  
Harald Haas
Keyword(s):  
Cognitive Radio ◽  
Anomaly Detection ◽  
Information Content ◽  
Spectrum Sharing ◽  
High Speed ◽  
Periodic Structures ◽  
Theoretic Approach ◽  
Information Theoretic ◽  
Leibler Divergence ◽  
Information Theoretic Approach

Efficient utilisation and sharing of limited spectrum resources in an autonomous fashion is one of the primary goals of cognitive radio. However, decentralised spectrum sharing can lead to interference scenarios that must be detected and characterised to help achieve the other goal of cognitive radio—reliable service for the end user. Interference events can be treated as unusual and therefore anomaly detection algorithms can be applied for their detection. Two complementary algorithms based on information theoretic measures of statistical distribution divergence and information content are proposed. The first method is applicable to signals with periodic structures and is based on the analysis of Kullback-Leibler divergence. The second utilises information content analysis to detect unusual events. Results from software and hardware implementations show that the proposed algorithms are effective, simple, and capable of processing high-speed signals in real time. Additionally, neither of the algorithms require demodulation of the signal.

scholarly journals Information Content of the Amalgamated Hromadas’ Websites and its Impact on Center-Periphery Interactions

2020 ◽  
Vol 10 (513) ◽  
pp. 233-240
Author(s):  
A. O. Maksymenko ◽  
Keyword(s):  
Content Analysis ◽  
Information Content ◽  
Public Information ◽  
The Internet ◽  
Regulatory Activity ◽  
Investment Projects ◽  
Amount Of Information ◽  
General Fund ◽  
Tourism Resources ◽  
Per Capita

The article analyzes the information content of the websites of amalgamated hromadas (AHs). On the example of AHs of Lviv region, a content analysis of the information on websites was carried out. Of the 41 formed during 2015-2019 amalgamated hromadas of Lviv region, 38 hromadas have created their official website. Mostly, the AHs’ websites cover: information about the activities of the management apparatus; information about the governance apparatus and the deputy composition of the AH council; budget and use of budget funds; participation of citizens in governance; regulatory activity/policy; strategic documents; passport of AH; detailed description of infrastructure, labor, agricultural, natural, tourism resources, enterprises operating on the territory of AH; there is a tab with information about ASC; investment passport and the land plots, which are intended for the implementation of investment projects, as well as information about the activities of various departments and communal utilities. It is noted that during the coverage of information on official websites, executive authorities should be guided by the Resolution of the Cabinet of Ministers of Ukraine «On the procedure for publishing information on the activities of executive authorities on the Internet», as well as Art. 15 of the Law of Ukraine «On Access to Public Information». It is determined that the most common is information about the composition and activities of the AH governance apparatus, information about the deputy composition, budget and use of budget funds, regulatory activities. The index of the amount of information covered is proposed and computed. It is concluded that AHs with general fund income (without transfers) per capita of more than 3000 UAH have more informatively filled websites. However, the type of hromada (urban or rural) does not influence the amount of information covered on the website. In general, the carried out analysis showed the lack of asymmetry in the disclosure and dissemination of information through the official websites of AHs of the Lviv region.

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