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Update tg_eigenvector_cent.gsql to add check for divide by zero error #182

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Update tg_eigenvector_cent.gsql to add check for divide by zero error #182

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e0e11c3
Update tg_eigenvector_cent.gsql to add check for divide by zero error
vama-tg Nov 6, 2025
7f2a40d
Update tg_eigenvector_cent.gsql according to fix provided by cursor
vama-tg Nov 19, 2025
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9 changes: 6 additions & 3 deletions algorithms/Centrality/eigenvector/tg_eigenvector_cent.gsql
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Original file line number Diff line number Diff line change
Expand Up @@ -68,16 +68,19 @@ CREATE QUERY tg_eigenvector_cent(SET<STRING> v_type_set, SET<STRING> e_type_set,

V = SELECT s
FROM V:s
POST-ACCUM s.@sum_eigen_value = s.@sum_eigen_value / sqrt(@@sum_squares_eigen_values),
@@sum_cur_norm_values += s.@sum_eigen_value;
POST-ACCUM
IF @@sum_squares_eigen_values > 0 THEN
s.@sum_eigen_value = s.@sum_eigen_value / sqrt(@@sum_squares_eigen_values),
@@sum_cur_norm_values += s.@sum_eigen_value
END;

conv_value = abs(@@sum_cur_norm_values - @@sum_prev_norm_values);
@@sum_prev_norm_values = @@sum_cur_norm_values;

END;
#Output
IF file_path != "" THEN
f.println("Vertex_ID", "egien vector");
f.println("Vertex_ID", "eigen vector");
END;
Start = SELECT s
FROM Start:s
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