simple context feature for tagger

1 files changed, 4 insertions, 2 deletions

diff --git a/gi/pf/reachability.h b/gi/pf/reachability.h
index 98450ec1..fb2f4965 100644
--- a/gi/pf/reachability.h
+++ b/gi/pf/reachability.h
@@ -12,12 +12,14 @@
 // currently forbids 0 -> n and n -> 0 alignments
 
 struct Reachability {
-  boost::multi_array<bool, 4> edges;  // edges[src_covered][trg_covered][x][trg_delta] is this edge worth exploring?
+  boost::multi_array<bool, 4> edges;  // edges[src_covered][trg_covered][src_delta][trg_delta] is this edge worth exploring?
   boost::multi_array<short, 2> max_src_delta; // msd[src_covered][trg_covered] -- the largest src delta that's valid
+  boost::multi_array<std::vector<std::pair<short,short> >, 2> valid_deltas; // valid_deltas[src_covered][trg_covered] list of valid transitions leaving a particular node
 
   Reachability(int srclen, int trglen, int src_max_phrase_len, int trg_max_phrase_len) :
       edges(boost::extents[srclen][trglen][src_max_phrase_len+1][trg_max_phrase_len+1]),
-      max_src_delta(boost::extents[srclen][trglen]) {
+      max_src_delta(boost::extents[srclen][trglen]),
+      valid_deltas(boost::extents[srclen][trglen]) {
     ComputeReachability(srclen, trglen, src_max_phrase_len, trg_max_phrase_len);
   }