Update.

diff --git a/README.txt b/README.txt
index 36ced12..20bb7df 100644 (file)
--- a/README.txt
+++ b/README.txt
@@ -54,9 +54,9 @@ no path at all. Note that the procedure is similar to that of KSP, in
 the sense that the family it computes eventually is globally optimal,
 even if the computation is iterative.
 
-The MTPTracker class allows
+The MTPTracker is defined by
 
- (1) to define a spatial topology composed of
+ (1) a spatial topology composed of
 
      - a number of locations
 
@@ -67,11 +67,11 @@ The MTPTracker class allows
 
      - the exits (a Boolean flag for each location and time step)
 
- (2) to define a number of time steps
+ (2) a number of time steps
 
- (3) to set for every location and time a detection score, which
-     should stand for log(P(Y = 1 | X)/P(Y = 0 | X)) where Y is for
-     the location occupancy and X the available observations.
+ (3) for every location and time a detection score, which should stand
+     for log(P(Y = 1 | X)/P(Y = 0 | X)) where Y is for the location
+     occupancy and X the available observations.
 
 From this setting, it computes the best set of disjoint trajectories
 consistent with the topology, which maximizes the overall detection
@@ -80,16 +80,16 @@ the trajectories)
 
 The MTPTracker is a wrapper around the MTPGraph class.
 
-From the defined the spatial topology and number of time steps, it
-builds a graph with one source, one sink, and two nodes per location
-and time. This structure ensures that the trajectories computed by the
+From the defined spatial topology and number of time steps, it builds
+a graph with one source, one sink, and two nodes per location and
+time. This structure ensures that the trajectories computed by the
 MTPTracker will be node-disjoint, since the trajectories computed by
 the MTPGraph are edge-disjoint.
 
 The edges from the source or to the sink, or between these pairs of
 nodes, are of length zero, and the edges between the two nodes of such
-a pair have lengths equal to the opposite of the corresponding
-detection scores.
+a pair have negative lengths, equal to the opposite of the
+corresponding detection scores.
 
 The file mtp_example.cc gives a very simple usage example of the
 MTPTracker class by setting the tracker parameters dynamically, and
@@ -98,33 +98,33 @@ running the tracking.
 The tracker data file for MTPTracker::read has the following format,
 where L is the number of locations and T is the number of time steps:
 
----------------------------- snip snip -------------------------------
-int:L int:T
+  ---------------------------- snip snip -------------------------------
+  int:L int:T
 
-bool:allowed_motion_from_1_to_1 ... bool:allowed_motion_from_1_to_L
-...
-bool:allowed_motion_from_L_to_1 ... bool:allowed_motion_from_L_to_L
+  bool:allowed_motion_from_1_to_1 ... bool:allowed_motion_from_1_to_L
+  ...
+  bool:allowed_motion_from_L_to_1 ... bool:allowed_motion_from_L_to_L
 
-bool:entrance_1_1 ... bool:entrance_1_L
-...
-bool:entrance_T_1 ... bool:entrance_T_L
+  bool:entrance_1_1 ... bool:entrance_1_L
+  ...
+  bool:entrance_T_1 ... bool:entrance_T_L
 
-bool:exit_1_1 ... bool:exit_1_L
-...
-bool:exit_T_1 ... bool:exit_T_L
+  bool:exit_1_1 ... bool:exit_1_L
+  ...
+  bool:exit_T_1 ... bool:exit_T_L
 
-float:detection_score_1_1 ... float:detection_score_1_L
-...
-float:detection_score_T_1 ... float:detection_score_T_L
----------------------------- snip snip -------------------------------
+  float:detection_score_1_1 ... float:detection_score_1_L
+  ...
+  float:detection_score_T_1 ... float:detection_score_T_L
+  ---------------------------- snip snip -------------------------------
 
 The method MTPTracker::write_trajectories writes first the number of
 trajectories, followed by one line per trajectory with the following
 structure
 
----------------------------- snip snip -------------------------------
-int:traj_number int:entrance_time int:duration float:score int:location_1 ... int:location_duration
----------------------------- snip snip -------------------------------
+  ---------------------------- snip snip -------------------------------
+  int:traj_number int:entrance_time int:duration float:score int:location_1 ... int:location_duration
+  ---------------------------- snip snip -------------------------------
 
 --
 François Fleuret