1613-0073 E7D359665473538909AD4FE3A5E71B63 arXiv:1803.11175 GROBID - A machine learning software for extracting information from scholarly documents

RQ1:

RQ2:

1: 2nd Amendment [18] 38 "Breaking down the 27 words of the Second Amendment" 2: Gun Control/Regulation [18] 215 "How gun background checks work" 3: Politics [19] 373 "Romney open to new gun measures" 4: Mental Health [20] 65 "Florida shooter a troubled loner with white supremacist ties" 5: School/Public Space Safety [21] 137 7 ways to help prevent school shootings 6: Race/Ethnicity [22] 114 "Lawyers call US gun charges for Mexican man 'vindictive '" 7: Public Opinion [23] 237 "Students call for action after Florida school mass shooting" 8: Society/Culture [24] 41 "White House weighs video game link to gun violence" 9: Economic Consequences [23] 80 "Calstrs to engage with assault-weapon sellers first, divest last"

Technical methodological diagram illustrating the key steps in the narrative extraction and analysis process, starting with the preprocessed final data set and ending with the quantitative and qualitative evaluation of the resulting narrative maps.

Map sizes of each combination starting and ending frames based on number of events in the map.Sample narrative map extracted from news events spanning January to June 2018. Events are represented as nodes labeled with headlines and frames. Connections indicate narrative relationships between events. Inconsistencies in framing across the map highlight challenges in producing coherent framing narratives through the extraction process.CoherenceChainConstraintsClusteringEnd: Frame 1 End: Frame 2 End: Frame 3 Linear programming formulation of the extraction method of Keith and Mitra [3]. Start: Frame 1 24 21 19Start: Frame 2161722Start: Frame 3222215𝐾 = 6𝐾Jensen-Shannon divergence values obtained by comparing the framing distribution of each combinationstarting and ending frames with the distribution of the data set.End: Frame 1 End: Frame 2 End: Frame 3 AverageStart: Frame 10.07640.00090.00500.0274Start: Frame 20.02700.03960.01720.0280Start: Frame 30.00690.01710.00630.0101Average0.03680.01920.00950.0218

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