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1 function [clip_dict, X, Y, valididx] = get_data_compact(clips, featureVec, simdata)
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2 % ---
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3 % instead of creating a new three feature vectors
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4 % for each constraint, this function links back to the
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5 % FIRST occurrence of a distinct clip and its features
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6 %
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7 % TODO: try to always link ALL occurences of a feature
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8 % / clip in the rankings
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9 % ---
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10
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11 global comparison_ids;
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12 global comparison_invids;
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13
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14 % ---
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15 % build the clip dictionary
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16 % ---
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17 uniclip = unique(reshape( simdata, 1, []));
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18 last_clip_pos = zeros(1, numel(uniclip));
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19
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20 clip_dict = [];
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21 Y = {};
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22 idx_newclip = 1;
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23 valididx = logical([]);
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24
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25 % cycle all constraints of one cv bin
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26 for j = 1:size(simdata,1)
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27
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28
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29 % save the first clip
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30 constraint = simdata(j,:);
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31
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32 % ---
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33 % check where the clip is and if there
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34 % is space to write cosntraint data
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35 %
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36 % If not, a position is created
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37 a = find_clip(constraint(1), 1);
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38 b = find_clip(constraint(2), 0);
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39 c = find_clip(constraint(3), 0);
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40
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41 % [a,b,c] -> clip a more similar to clip b than to clip c
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42
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43 % adress weightings
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44 if numel(constraint) == 4
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45 Y(a,:) = {b, c, (constraint(4))};
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46 else
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47 Y(a,:) = {b, c};
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48 end
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49 end
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50
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51 % ---
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52 % get feature data
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53 % NOTE: this uses an index of the comparison clips
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54 % ---
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55 X = featureVec(:,(comparison_invids(clip_dict)));
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56
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57 for i = find(~valididx)
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58 if size(Y,2) == 3
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59 Y(i,:) = {[], [], 0};
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60 else
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61 Y(i,:) = {[], []};
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62 end
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63 end
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64
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65 function clip_idx = find_clip(clip, write)
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66 uc_idx = find(uniclip == clip);
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67
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68 % ---
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69 % do we have a place of this clip?
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70 %
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71 % NOTE: last_clip_pos has to be reset after every write
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72 % ---
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73 if (last_clip_pos(uc_idx) == 0) || ...
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74 write && (numel(valididx) >= last_clip_pos(uc_idx)) &&...
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75 (valididx(last_clip_pos(uc_idx)) == 1)
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76
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77 % if not, create one
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78 clip_idx = idx_newclip;
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79 clip_dict(clip_idx) = clip;
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80 valididx(clip_idx) = false;
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81
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82 % and save into last pos
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83 last_clip_pos(uc_idx) = clip_idx;
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84
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85 idx_newclip = idx_newclip + 1;
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86 else
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87 clip_idx = last_clip_pos(uc_idx);
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88 end
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89
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90 if write
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91 valididx(clip_idx) = true;
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92 end
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93
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94 end
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95
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96 end
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