Systematic Literature Review

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Systematic Literature Reviews:

Systematic Literature Reviews Ali Khalili Tuesday, November 1, 2011 The literature

Types of reviews:

Types of reviews Narrative reviews : Summaries of research that lack explicit descriptions of systematic methods Systematic reviews: Use explicit and rigorous methods to identify, critically appraise, and synthesize relevant studies Meta-analysis: quantitative review using statistical analyses Meta-ethnography: systematic review of qualitative data

Advantages of Systematic Reviews:

Advantages of Systematic Reviews You don’t have to be an “expert” to do one! More objective , less prone to bias and error Literature search is comprehensive, exhaustive and repeatable Clear description of the methods used Explicit criteria for choosing studies Includes assessment and discussion of quality of primary studies Readers can replicate or verify the review

Steps Overview:

Steps Overview

1. Formulate your research question :

1. Formulate your research question Example What are the existing approaches for user-friendly semantic content authoring? How to classify the existing approaches for semantic content authoring? What type of user interfaces are used by each approach? What are the features supported by the proposed user interfaces? What type of users are targeted in each approach? How is the user interface evaluated?

2. Establish a pilot :

2. Establish a pilot As an starting point: Do some pilot searches Get some relevant studies from an expert in the field

3. Choose appropriate search keywords:

3. Choose appropriate search keywords Based on pilot studies Trial and Error Not too broad (‘scope creep’) Not too narrow (‘empty net’) Think of all possibly synonyms Example 1 AND 2 AND 3 "semantic" OR "linked data" OR "web of data" OR "data web" "content" OR "web page" OR "document" "authoring" OR "annotating" OR "annotation" OR "annotate" OR "enrich" OR "edit"

4. Conduct the search and collect studies:

4. Conduct the search and collect studies Get list of relevant data sources Commonly used data sources: ACM Digital Library IEEE Xplore Digital Library ScienceDirect SpringerLink ISI Web of Sciences Adapt your query to each data source API Download citations

5. Select relevant studies:

5. Select relevant studies Define your inclusion and exclusion criteria Example Include A study that focuses on semantic content authoring. A study that either proposes a user interface or a set of user interface features for the purpose of semantic content authoring. Exclude A study that does not focus on semantic content authoring but only mentions it for the purpose of data integration. A study that does not propose any user interface (or user interface feature) for semantic content authoring but only a method, approach or algorithm for semantic annotation. A study that is not about Web-based content authoring (e.g. It is about semantic authoring in word processors like Latex). A study that is only about the ontology authoring or ontology annotation (e.g. by using the natural language). A study that does not discuss textual Web content authoring but image, audio or video annotation.

5. Select relevant studies (con.):

5. Select relevant studies (con.) Apply your criteria on title, abstract and full-text of studies Result : List of primary Studies

6. Analyze primary studies:

6. Analyze primary studies Quantitative Data Analysis Methods Qualitative Data Analysis Methods Coding " filling in ": adding codes, reconstructing a coherent scheme as new insights emerge and new ways of looking at the data emerge. " extension ": returning to materials coded earlier and interrogating them in a new way, with a new theme, construct, or relationship. " bridging ": seeing new or previously not understood relationships within units of a given category (that relationship within itself have a name, and it may call for a new configuration of the categories). " surfacing ": identifying new categories. Analysis Software Commercial Atlas.ti QSR NVIVO Free Weft QDA (http://www.pressure.to/qda/)

6. Analyze primary studies (con.):

6. Analyze primary studies (con.) Excerpts Codes Primary Studies

7. Report on the results:

7. Report on the results

Steps Overview:

Steps Overview

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