papers, 8% in individual nodules, or "curds", 15% are outliers (individual kernels with no paper attached), 27% are linked to more than one kernel or curd (N-arity >1). These statistics illustrate how dispersed and sparse are our cluster structures. Table 2 shows an example of a kernel of 7 papers and 12 "polysemic" papers attached to it, of N-arity 2 to 5. Table 3 illustrates this kernel with the main relative participations of keywords to the intra-kernel links. 

| Kernel number (clusterhead) = 479: Stability monitoring  N-arity / internal # / density / external # / Title  !1 479 11.705035 017320 1 Geotechnical investigation of the New Baltimore Slide  !1 92 9.9605749 016933 1 Geotechnical trends in urban terrains evolution  !1 745 8.8692265 017586 1 Monitoring of Metro Line C construction in Prague  !1 161 8.7494076 017002 1 TAILSAFE: investigation and improvement of tailings facilities  !1 60 7.4491246 016901 1 Monitoring of the test on the dike at Bergambacht: design and practice  !1 725 5.8891947 017566 1 Monitoring and physical model simulation of a complex slope deformation in neovolcanics  !1 474 4.6110304 017315 1 Displacement measurement by image processing in a field test on dike failure  ! !  !2 142 8.1226061 016983 1 Methods of monitoring of historical buildings and slopes  !2 760 6.8718024 017601 1 Parametric analysis of slope stability analysis using AutoLISP  !2 226 5.9199853 017067 1 Uncoupled analysis of stabilizing piles in weathered slopes  !2 103 5.8558796 016944 1 Multi-method investigation of contaminated soils for a sustainable land use  !2 61 5.5634301 016902 1 An interdisciplinary approach for brownfields  !2 388 5.0722303 017229 1 Cumulation of seismic waves during formation of kimberlite pipes  !2 26 4.8760059 016867 1 Thermal strengthening of loess soils  ! !  !3 718 4.6264401 017559 1 Rock cleaning along Bavaria's road network  !3 478 4.1930455 017319 1 Instrumentation and monitoring of combined piled rafts (CPRF): state-of-the-art report  !3 653 3.8222772 017494 1 RN 88. Déviation de La Guide La Besse. Un chantier de terrassements complexes  !3 805 3.5239168 017646 1 Apparent phase velocities and fundamental-mode phase velocities of Rayleigh waves  ! !  !5 241 3.5936722 017082 1 La place de la géotechnique dans l'organisation des projets et des travaux  Table 1   |
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Kernel number (clusterhead) = 479: Stability monitoring 

| ‰ internal links / keyword # / keyword  !130 348 Surveillance !  !90 601 Pile !  !45 323 Loading test !  !45 330 Seismic wave !  !45 111 Surface wave !  !34 39 Wave dispersion !  !34 885 Models !  !34 218 Mass movements !  !34 355 S wave !  !34 213 Lift !  !34 528 Rupture !  !34 66 Earthworks !  !34 9 Phase velocity !  !28 397 Loading !  !28 1016 Slope stability !  !22 14 Industrial wasteland !  !17 426 Numerical analysis !  !11 146 Image analysis !  !11 112 Freeway !  !11 9 Safety coefficient !  !11 173 Construction !  !11 580 Displacement !   |
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