From d4263d1dc29fe46871caec9fde613bf40f3ed90c Mon Sep 17 00:00:00 2001
From: Patrick Simianer <p@simianer.de>
Date: Fri, 15 Jul 2016 12:17:47 +0200
Subject: support for 'noloo' extraction and updatable lm; fixes

---
 inc/db.inc.php   |   2 +-
 js/interface.js  | 429 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 server.rb        | 144 +++++++++++++++++--
 views/debug.haml |   5 +-
 4 files changed, 567 insertions(+), 13 deletions(-)

diff --git a/inc/db.inc.php b/inc/db.inc.php
index e023c3a..bc18e16 100644
--- a/inc/db.inc.php
+++ b/inc/db.inc.php
@@ -2,7 +2,7 @@
 
 $SESSION_DIR="/srv/postedit/sessions";
 $key = $_GET["key"];
-if (preg_match('/^[a-z0-9]{1,4}$/', $key)) {
+if (preg_match('/^[a-f0-9]{1,4}$/', $key)) {
   $json = file_get_contents($SESSION_DIR."/".$key."/data.json");
 }
 $db = json_decode($json);
diff --git a/js/interface.js b/js/interface.js
index ec36af7..1fd3468 100644
--- a/js/interface.js
+++ b/js/interface.js
@@ -8,6 +8,8 @@ var data,    // global data object
 var TEXT_count_click=0,
     TEXT_count_kbd=0;
 
+var rules_orig = {};
+
 /*
  * cross-site request
  *
@@ -282,6 +284,11 @@ var next =  function ()
     send_data["post_edit"] = safe_str(post_edit);
     send_data['type'] = 'g';
     send_data["original_svg"] = document.getElementById("original_svg").value;
+    var dx = rule_diff(rules_orig, get_simplest_rules1());
+    for (k in dx) {
+      dx[k] = safe_str(dx[k]);
+    }
+    send_data["rule_diff"] = dx;
   } else {
     post_edit = $.trim(target_textarea.value);
     send_data["post_edit"] = safe_str(post_edit);
@@ -514,6 +521,7 @@ var request_and_process_next = function ()
         var x = $.trim(JSON.parse(DE_extract_data())["target"].join(" "));
         last_post_edit.value = x;
         document.getElementById("original_svg").value = DE_get_raw_svg_data();
+        rules_orig = get_simplest_rules1();
       }
 
       // start timer
@@ -593,3 +601,424 @@ $().ready(function()
 
 });
 
+var explore = function (o,src,tgt,s2t,t2s,done)
+{
+  if (done[o["id"]]) return;
+  var d,other_t;
+  if (o["type"] == "source") {
+    d = s2t;
+    src.push(o["id"]);
+    other_t = "target";
+  } else {
+    d = t2s;
+    tgt.push(o["id"])
+    other_t = "source";
+  }
+
+  if (!d[o["id"]]) return;
+  if (d[o["id"]].length==0) return;
+
+  done[o["id"]] = true;
+
+  for (var i=0; i < d[o["id"]].length; i++) {
+    explore({"id":d[o["id"]][i], "type":other_t}, src, tgt, s2t, t2s, done);
+  }
+
+  return;
+}
+
+var rule_diff = function (prev,now)
+{
+  var diff = {};
+  for (key in now) {
+    if (prev[key] && now[key] != prev[key]) {
+      diff[key] = now[key];
+    }
+    if (!prev[key]) {
+      diff[key] = now[key];
+    }
+  }
+
+  return diff;
+}
+
+var get_simplest_rules = function ()
+{
+  var s2t = [];
+  var t2s = [];
+  for (key in DE_connections) {
+    var a = key.split("-");
+    if (s2t.hasOwnProperty(a[0])) {
+      s2t[parseInt(a[0])].push(parseInt(a[1]));
+    } else {
+      s2t[parseInt(a[0])] = [parseInt(a[1])];
+    }
+    if (t2s.hasOwnProperty(a[1])) {
+      t2s[parseInt(a[1])].push(parseInt(a[0]));
+    } else {
+      t2s[parseInt(a[1])] = [parseInt(a[0])];
+    }
+  }
+
+  var rules = [];
+  var done = {};
+  for (var i=0; i < DE_shapes.length; i++) {
+    if (DE_shapes[i]["type_"] == "source") {
+      var id = parseInt(DE_shapes[i]["id_"]);
+      var src = [];
+      var tgt = [];
+      explore({"id":id,"type":"source"}, src, tgt, s2t, t2s, done);
+      if (src.length >0 && tgt.length>0) {
+        rules.push( {"src":src, "tgt":tgt } );
+      }
+    }
+  }
+
+  rs = {}
+  for (r in rules) {
+    var src = "", tgt = "";
+    var prev=null
+    for (var i=0; i< rules[r]["src"].length; i++) {
+      if (prev!=null && prev < rules[r]["src"][i]-1) {
+        src += "[X] ";
+      }
+      src += DE_shapes_by_id[rules[r]["src"][i]].pair[0].textContent+" ";
+      if (rules[r]["src"][i]!=null)
+        prev = rules[r]["src"][i];
+    }
+    src += "||| ";
+    prev = null;
+    for (var i=0; i< rules[r]["tgt"].length; i++) {
+      if (!DE_shapes_by_id[rules[r]["tgt"][i]]) // unaligned source
+        continue;
+      if (prev && prev < rules[r]["tgt"][i]-1) {
+        tgt += "[X] ";
+      }
+      tgt += DE_shapes_by_id[rules[r]["tgt"][i]].pair[0].textContent+" ";
+      if (rules[r]["tgt"][i])
+        prev = rules[r]["tgt"][i];
+    }
+    if (tgt.replace(/\|\|\|/g, "").trim() != "") {
+      var id = rules[r]["tgt"][0];
+      var b = false;
+      if (DE_target_shapes[0]["id_"] == id) {
+        b = true;
+      }
+      rs[rules[r]["src"]] = b+" ||| "+$.trim(src+tgt);
+    }
+  }
+
+  return rs;
+}
+
+var id2idx = function (id) { // or grid_pos
+  var i = 0;
+  for (k in DE_target_shapes) {
+    if (DE_target_shapes[k]["id_"] == id) {
+      return i;
+    }
+    i++;
+  }
+
+  return -1;
+}
+
+var idx2id = function (idx) {
+  return DE_target_shapes[idx]["id_"];
+}
+
+var amax = function (a) {
+  var max = -9999999999999;
+  for (k in a) {
+    if (a[k] > max)
+      max = a[k];
+  }
+  return max;
+}
+
+var $rules =[];
+var get_simplest_rules1 = function ()
+{
+  var s2t = [];
+  var t2s = [];
+  for (key in DE_connections) {
+    var a = key.split("-");
+    if (s2t.hasOwnProperty(a[0])) {
+      s2t[parseInt(a[0])].push(parseInt(a[1]));
+    } else {
+      s2t[parseInt(a[0])] = [parseInt(a[1])];
+    }
+    if (t2s.hasOwnProperty(a[1])) {
+      t2s[parseInt(a[1])].push(parseInt(a[0]));
+    } else {
+      t2s[parseInt(a[1])] = [parseInt(a[0])];
+    }
+  }
+
+  var rules = [];
+  var done = {};
+  for (var i=0; i < DE_shapes.length; i++) {
+    if (DE_shapes[i]["type_"] == "source") {
+      var id = parseInt(DE_shapes[i]["id_"]);
+      var src = [];
+      var tgt = [];
+      explore({"id":id,"type":"source"}, src, tgt, s2t, t2s, done);
+      if (src.length >0 && tgt.length>0) {
+        tgt.sort(function(a,b) { return id2idx(a) > id2idx(b) });
+        rules.push( {"src":src, "tgt":tgt } );
+      }
+    }
+  }
+
+  for (var z=0; z<rules.length; z++) {
+    var src_gaps = [];
+    var tgt_gaps = [];
+    var r = rules[z];
+    var prev = null;
+
+    for (var j=0; j<r.src.length; j++) {
+      if (prev!=null && prev<(r.src[j]-1)) { // id == index == pos
+        var a = [];
+        for (var k=prev+1; k<r.src[j]; k++) {
+          a.push(k);
+        }
+        src_gaps.push(a);
+      }
+      prev = r.src[j];
+    }
+
+    prev = null;
+    for (var j=0; j<r.tgt.length; j++) {
+      if (prev!=null && prev<((id2idx(r.tgt[j]))-1)) {
+        var a = [];
+        for (var k=prev+1; k<id2idx(r.tgt[j]); k++) {
+          a.push(k);
+        }
+        tgt_gaps.push(a);
+      }
+      prev = id2idx(r.tgt[j]);
+    }
+
+    r["src_gaps"] = src_gaps;
+    r["tgt_gaps"] = tgt_gaps;
+    r["src_gaps_pos"] = []; // 0 before, 1 after
+    src_gaps_covered = [];
+    var tgt_indexes = [];
+    var invalid = false;
+    for (k in r.tgt_gaps) { // for each target gap
+      var g = r.tgt_gaps[k]; // current gap
+      var ga = g.map(function(i) { // these are the aligned sources to this gap
+        try {
+          return t2s[idx2id(i)][0];
+        } catch(e) {
+          return null;
+        }
+      });
+      var index = -1; // behind or before
+      var b = false;
+      for (var l=ga.length-1; l>=0; l--) { // take the last one / or should I?
+        for (m in r.src_gaps) {
+          if (r.src_gaps[m].find(function(i) { return i==ga[l] })) {
+            index = m;
+            src_gaps_covered.push(m);
+            b = true;
+            break;
+          }
+          if (b) break;
+        }
+      }
+
+      if (index == -1) { // not found within
+        // try to find outside
+        var x = null;
+        for (var j=ga.length-1; j>=0; j--) { // first (from the back) aligned
+          if (ga[j]) {
+            x = ga[j];
+            break;
+          }
+        }
+        if (x == null) {
+          if (r.src_gaps.length == 1 && r.tgt_gaps.length == 1) {
+            index = 0;
+            src_gaps_covered.push(0);
+          } else {
+            invalid = true;
+          }
+        } else {
+          if (x < r.src[0]) { // before
+            r.src_gaps.unshift([x]);
+            tgt_indexes = tgt_indexes.map(function(i) { return i+1 });
+            index = 0;
+            r["src_gaps_pos"].push(0);
+            src_gaps_covered.push(-1); // doesn't matter
+          } else if (x > r.src[r.src.length-1]) { // after
+            r.src_gaps.push([x]);
+            index = Math.max(0,amax(tgt_indexes)+1);
+            r["src_gaps_pos"].push(1);
+            src_gaps_covered.push(-1); // doesn't matter
+          } else {
+            invalid = true;
+          }
+        }
+      }
+      tgt_indexes.push(parseInt(index));
+    }
+
+    r["tgt_gaps_pos"] = [];
+    if (r.src_gaps.length > src_gaps_covered.length) {
+      for (k in r.src_gaps) {
+        if (!src_gaps_covered.find(function(i){return i==k;})) { // not covered
+          try {
+            for (var l=r.src_gaps[k].length-1; l>=0; l--) {
+              if (s2t[r.src_gaps[k][l]]!=null) {
+                if (s2t[r.src_gaps[k][l]] > id2idx(r.tgt[0])) { // before
+                  r["tgt_gaps_pos"].push(0);
+                } else if(s2t[r.src_gaps[k][l]] < id2idx(r.tgt[r.tgt.length-1])) { //after
+                  alert("!!");
+                  r["tgt_gaps_pos"].push(1);
+                } else {
+                }
+                break;
+              }
+            }
+          } catch(e) {
+          }
+        }
+      }
+    }
+    r["tgt_indexes"] = tgt_indexes;
+    r["invalid"] = invalid;
+  }
+
+  for (var z=0; z<rules.length; z++) { // FIXME why here?
+    r = rules[z];
+    if (r.tgt_indexes.length!=r.tgt_gaps.length || r.tgt_indexes.length!=r.src_gaps.length) {
+      r.invalid = true;
+    }
+  }
+
+  rs = {}
+  for (r in rules) {
+    if (r.invalid) {
+      alert(r);
+      continue;
+    }
+    var src = "", tgt = "";
+    var prev=null
+    var src_idx = 1;
+    var src_gaps_count = 0;
+    for (var i=0; i< rules[r]["src"].length; i++) {
+      if (prev!=null && prev < rules[r]["src"][i]-1) { // work, because id==idx
+        src += "[X,"+src_idx+"] ";
+        src_idx++;
+      }
+      src += DE_shapes_by_id[rules[r]["src"][i]].pair[0].textContent+" ";
+      if (rules[r]["src"][i]!=null)
+        prev = rules[r]["src"][i];
+    }
+    if ((src_idx-1) < rules[r]["src_gaps_pos"].length) {
+      for (q in rules[r]["src_gaps_pos"]) {
+        if (rules[r]["src_gaps_pos"][q] == 0) { // before
+          var re=/\[X,(\d)\]/g;
+          do { m = re.exec(src); if (m) { src[m.index+3] = parseInt(m[1])+1 }; } while (m);
+          src = "[X,1] "+$.trim(src);
+          src_gaps_covered.push(-1);
+        } else { // after
+          var re=/\[X,(\d)\]/g;
+          var last = 0;
+          do { m = re.exec(src); if (m) { last = parseInt(m[1]) }; } while (m);
+          src = $.trim(src);
+          src += " [X,"+(last+1)+"]";
+          src_gaps_covered.push(-1);
+        }
+      }
+    }
+    src += "||| ";
+    prev = null;
+    var tgt_idx_idx = 0;
+    for (var i=0; i< rules[r]["tgt"].length; i++) {
+      if (!DE_shapes_by_id[rules[r]["tgt"][i]]) { // unaligned source
+        continue;
+      }
+      if (prev!=null && prev < id2idx(rules[r]["tgt"][i])-1) {
+        tgt += "[X,"+(rules[r]["tgt_indexes"][tgt_idx_idx]+1)+"] " ;
+        tgt_idx_idx++;
+      }
+      tgt += DE_shapes_by_id[rules[r]["tgt"][i]].pair[0].textContent+" ";
+      if (rules[r]["tgt"][i]) {
+        prev = id2idx(rules[r]["tgt"][i]);
+      }
+    }
+    for (k in rules[r]["tgt_gaps_pos"]) {
+      if (rules[r]["tgt_gaps_pos"][k] == 0) { // before
+        var re=/\[X,(\d)\]/g;
+        do { m = re.exec(tgt); if (m) { tgt[m.index+3] = parseInt(m[1])+1 }; } while (m);
+        tgt = "[X,1] "+$.trim(tgt);
+      } else { // after
+        var re=/\[X,(\d)\]/g;
+        var last = 0;
+        do { m = re.exec(tgt); if (m) { last = parseInt(m[1]) }; } while (m);
+        tgt = $.trim(tgt);
+        tgt += " [X,"+(last+1)+"]";
+      }
+    }
+    if (tgt.replace(/\|\|\|/g, "").trim() != "") {
+      var id = rules[r]["tgt"][0];
+      var b = false;
+      if (DE_target_shapes[0]["id_"] == id) {
+        b = true;
+      }
+      var accept = true;
+      var x = src.match(/\[X,\d\]/g);
+      var y = tgt.match(/\[X,\d\]/g);
+      if (x && y) {
+        accept = x.length==y.length;
+        var srci = src.match(/\[X,(\d)\]/g).map(function(i){return parseInt(i.split(",")[1].replace("]",""))}).sort()
+        var tgti = tgt.match(/\[X,(\d)\]/g).map(function(i){return parseInt(i.split(",")[1].replace("]",""))}).sort()
+        var prev = null;
+        var uniq = true;
+        for (k in srci) {
+          if (prev!=null && prev==srci[k]) {
+            uniq = false;
+            break;
+          }
+          prev = srci[k];
+        }
+        prev = null
+        for (k in tgti) {
+          if (prev!=null && prev==tgti[k]) {
+            uniq = false;
+            break;
+          }
+          prev = tgti[k];
+        }
+        accept = accept && uniq;
+        var same = true;
+        if (srci.length == tgti.length) {
+          for (k in srci) {
+            if (srci[k] != tgti[k]) {
+              same = false;
+              break;
+            }
+          }
+        }
+
+        accept = accept && same;
+
+      } else if (x && !y || !x && y) {
+        accept = false
+      }
+
+      if (accept) {
+        rs[rules[r]["src"]] = b+" ||| "+$.trim(src+tgt);
+      } else {
+        alert(src+tgt+" "+rules[r]["tgt_gaps"].length+" "+src_gaps_covered.length+" --- "+String(x.length==y.length) + " " + String(uniq) + " " + String(same));
+      }
+    }
+  }
+
+  $rules = rules;
+
+  return rs;
+}
+
diff --git a/server.rb b/server.rb
index d6cbec7..4a3e8f6 100755
--- a/server.rb
+++ b/server.rb
@@ -15,7 +15,10 @@ require_relative './phrase2_extraction/phrase2_extraction'
 # #############################################################################
 # Load configuration file and setup global variables
 # #############################################################################
-require_relative "#{ARGV[0]}" # load configuration for this session
+NOLOO = nil                          # added later, warning
+OLM = nil                            # added later, warning
+$olm_pipe = nil
+require_relative "#{ARGV[0]}"        # load configuration for this session
 $lock                    = false     # lock if currently learning/translating
 $last_reply              = nil       # cache last reply
 $last_processed_postedit = ""        # to show to the user
@@ -73,9 +76,9 @@ end
 def start_daemon cmd, name, addr
   logmsg :server, "starting #{name} daemon"
   cmd.gsub! '__ADDR__', addr
-  pid = fork do
-    exec cmd
-  end
+  pid = spawn(cmd)
+  Process.detach pid
+  logmsg :server, "#{name} detached"
   sock = NanoMsg::PairSocket.new
   sock.connect addr
   logmsg :server, "< got #{sock.recv} from #{name}"
@@ -116,6 +119,11 @@ def init
                                                             # working directory
   `mkdir -p #{WORK_DIR}/`
   `mkdir #{WORK_DIR}/g`
+
+  if OLM
+    `mkfifo #{WORK_DIR}/refp`
+  end
+
                                              # setup environment, start daemons
   port = BEGIN_PORT_RANGE
   $daemons.each { |name,cmd|
@@ -124,7 +132,19 @@ def init
     port += 1
   }
 
+  if OLM
+    logmsg :server, "writing to OLM pipe"
+    $olm_pipe = File.new "#{WORK_DIR}/refp", "w"
+    $olm_pipe.write " \n"
+    $olm_pipe.flush
+    logmsg :server, "writing to OLM pipe, done!"
+  end
+
   send_recv :truecaser, "lOaD iT"
+
+  #if OLM
+  #  $olm_pipe = File.new "#{WORK_DIR}/refp", "w"
+  #end
                                                                    #  lock file
   `touch #{LOCK_FILE}`
   $status = "Initialized"                                              # status
@@ -220,6 +240,7 @@ def process_next reply
 # 5b. backward alignment
 # 5c. symmetrize alignment
 # 5d. actual update
+# 5e. update LM
 # 6. update database
   if data["EDIT"]
     $status = "Processing post-edit"                                   # status
@@ -245,6 +266,10 @@ def process_next reply
       f = []
       data["source_raw"].each { |i| f << URI.decode(i) }
 
+      # no loo rules
+      no_loo_known_rules = []
+      no_loo_new_rules = []
+
       if !NOGRAMMAR
                                                         # 2.5 new rule extraction
         $status = "Extracting rules from post edit"                      # status
@@ -255,6 +280,36 @@ def process_next reply
           s = splitpipe(r.to_s)[1..2].map{|i|i.strip.lstrip}.join(" ||| ")
           current_grammar_ids[s] = true
         }
+        # no loo rules
+        no_loo_known_rules = []
+        no_loo_new_rules = []
+        if NOLOO
+          tmp_rules = []
+          logmsg :server, "rule diff: #{data['rule_diff'].to_s}"
+          data["rule_diff"].each_key { |k|
+            x = k.split(",").map{|i|i.to_i}.sort
+            tgt_a = data["rule_diff"][k]["tgt_a"]
+            tgt_first,src,tgt = splitpipe data["rule_diff"][k]
+            tgt_first = tgt_first.lstrip.strip
+            src = src.lstrip.strip
+            tgt = tgt.lstrip.strip
+            prev = tgt[0]
+            logmsg :server, "tgt_first #{tgt_first}"
+            tgt = send_recv :truecaser, tgt
+            tgt[0] = prev if tgt_first=="false"
+            if x.first == 0
+              src[0] = data["source_value"][0]
+            end
+            tmp_rules << [src, tgt]
+          }
+          tmp_rules_new = tmp_rules.reject { |r|
+              current_grammar_ids.has_key? r
+          }
+          tmp_rules_known = tmp_rules - tmp_rules_new
+          tmp_rules_known.each { |i| no_loo_known_rules << "[X] ||| #{i[0]} ||| #{i[1]} ||| KnownRule=1 ||| 0-0" }
+          tmp_rules_new.each { |i| no_loo_new_rules << "[X] ||| #{i[0]} ||| #{i[1]} ||| NewRule=1 ||| 0-0" }
+        end
+        # regular
         new_rules = PhrasePhraseExtraction.extract_rules f, e, data["align"], true
         new_rules_ids = {}
         $new_rules.each { |r|
@@ -269,6 +324,7 @@ def process_next reply
           current_grammar_ids.has_key?(s) || new_rules_ids.has_key?(s)
         }
         $new_rules += new_rules
+        $new_rules += no_loo_new_rules
         $new_rules.uniq! { |rs|
           splitpipe(rs)[1..2].map{|i|i.strip.lstrip}.join(" ||| ")
         }
@@ -277,6 +333,7 @@ def process_next reply
         f.close
         logmsg :server, "# rules after filtering #{new_rules.size}"
         add_known_rules = _-new_rules
+        add_known_rules += no_loo_known_rules
         add_known_rules.reject! { |rs|
           s = splitpipe(rs)[1..2].map{|i|i.strip.lstrip}.join(" ||| ")
           new_rules_ids.has_key?(s)
@@ -333,7 +390,45 @@ def process_next reply
       grammar = "#{SESSION_DIR}/g/grammar.#{$db['progress']}"
       annotated_source = "<seg grammar=\"#{grammar}\"> #{source} </seg>"
       $status = "Learning from post-edit"                              # status
-      send_recv :dtrain, "#{annotated_source} ||| #{post_edit}"
+      if NOLOO
+        `cp #{grammar} #{grammar}.pass0`
+        match = {}
+        no_loo_known_rules.each { |r|
+          _,src,tgt,_,_ = splitpipe r
+          match["#{src.strip.lstrip} ||| #{tgt.strip.lstrip}".hash] = true
+        }
+        all_rules = ReadFile.readlines_strip grammar
+        all_rules.each_with_index { |r,j|
+          nt,src,tgt,f,a = splitpipe(r).map { |i| i.strip.lstrip }
+          if match["#{src} ||| #{tgt}".hash]
+            ar = "#{nt} ||| #{src} ||| #{tgt} ||| #{f} KnownRule=1 ||| #{a}"
+            logmsg :server, "replacing rule '#{r}' with '#{ar}'"
+            all_rules[j] = ar
+          end
+        }
+        if no_loo_new_rules.size > 0
+          all_rules += no_loo_new_rules
+        end
+        f = WriteFile.new(grammar)
+        f.write(all_rules.join("\n")+"\n")
+        f.close
+        logmsg :server, "adding rules and re-translate"
+        if OLM # again ..
+          $status = "Updating language model"
+          logmsg :server, "fake updating lm"
+          $olm_pipe.write " \n"
+          $olm_pipe.flush
+        end
+        `cp #{WORK_DIR}/dtrain.debug.json \
+          #{WORK_DIR}/#{$db['progress']}.dtrain.debug.json.pass0`
+        send_recv :dtrain, "act:translate_learn ||| #{annotated_source} ||| #{post_edit}"
+        `cp #{WORK_DIR}/dtrain.debug.json \
+          #{WORK_DIR}/#{$db['progress']}.dtrain.debug.json.pass1`
+      else
+        send_recv :dtrain, "act:learn ||| #{annotated_source} ||| #{post_edit}"
+        `cp #{WORK_DIR}/dtrain.debug.json \
+          #{WORK_DIR}/#{$db['progress']}.dtrain.debug.json.pass0`
+      end
                                                   # 5. update grammar extractor
       if !$pregenerated_grammars
                                                     # 5a. get forward alignment
@@ -349,13 +444,27 @@ def process_next reply
         $status = "Updating grammar extractor"                         # status
         msg = "default_context ||| #{source} ||| #{post_edit} ||| #{a}"
         send_recv :extractor, msg
+      end
+                                                           # 5e update LM
+      if OLM
+        $status = "Updating language model"
+        logmsg :server, "updating lm"
+        #`echo "#{post_edit}" >> #{WORK_DIR}/refp`
+        $olm_pipe.write "#{post_edit}\n"
+        $olm_pipe.flush
       end
                                                            # 6. update database
       $db['updated'] << true
-      `cp #{WORK_DIR}/dtrain.debug.json \
-        #{WORK_DIR}/#{$db['progress']}.dtrain.debug.json`
     else
+      `cp #{WORK_DIR}/dtrain.debug.json \
+        #{WORK_DIR}/#{$db['progress']}.dtrain.debug.json.nolearn`
       $db['updated'] << false
+      if OLM
+        $status = "Updating language model"
+        logmsg :server, "fake updating lm"
+        $olm_pipe.write " \n"
+        $olm_pipe.flush
+      end
     end
     logmsg :db, "updating database"
     update_database
@@ -532,19 +641,33 @@ end
 
 get '/debug' do                                                    # debug view
   data = {}
-  data = JSON.parse ReadFile.read(DB_FILE).force_encoding("UTF-8")
+  s = File.binread(DB_FILE).encode('UTF-8', 'UTF-8', :invalid => :replace, :replace => "__INVALID__")
+  data = JSON.parse s
   if data["durations"].size == 0
     data["durations"] << -1
   end
 
-  fn = "#{WORK_DIR}/dtrain.debug.json"
+  fn = "#{WORK_DIR}/#{$db["progress"]-1}.dtrain.debug.json.pass"
+  pass = 0
+  if File.exist? fn+"1"
+    fn += "1"
+    pass = 1
+  else
+    fn += "0"
+    pass = 0
+  end
   pairwise_ranking_data                     = {}
   pairwise_ranking_data["kbest"]            = []
   pairwise_ranking_data["weights_before"]   = {}
   pairwise_ranking_data["weights_after"]    = {}
   pairwise_ranking_data["best_match_score"] = 0
   if File.exist? fn
-    pairwise_ranking_data = JSON.parse ReadFile.read(fn).force_encoding("UTF-8")
+    s = File.binread(fn).encode('UTF-8', 'UTF-8', :invalid => :replace, :replace => "__INVALID__").force_encoding("utf-8")
+    begin
+      pairwise_ranking_data = JSON.parse s
+    rescue
+      logmsg :server, s.encoding
+    end
   end
 
   admin = false
@@ -555,6 +678,7 @@ get '/debug' do                                                    # debug view
   haml :debug, :locals => { :data => data,
                             :pairwise_ranking_data => pairwise_ranking_data, \
                             :progress => $db["progress"]-1,
+                            :pass => pass,
                             :new_rules => $new_rules, \
                             :known_rules => $known_rules, \
                             :session_key => SESSION_KEY, \
diff --git a/views/debug.haml b/views/debug.haml
index 17f7f86..1ab22f7 100644
--- a/views/debug.haml
+++ b/views/debug.haml
@@ -148,6 +148,7 @@
     %p <strong>Duration:</strong>                   #{data["durations"][progress]}ms
     %p <strong>Keypresses:</strong>                 #{data["count_kbd"][progress]}
     %p <strong>Clicks:</strong>                     #{data["count_click"][progress]}
+    %p <strong>Pass:</strong>                       #{pass}
 
     %h3 Derivation
     %p
@@ -169,7 +170,7 @@
     /=#########################################################################
     %h2#grammar Grammar
 
-    %p <strong>Notes:</strong> In addition to dynamically adding each source/post-edit instance to the suffix array extractor, the system additionally uses the provided phrase alignments to extract new rules. The extraction follows the original Hiero grammar extraction, but using phrases instead of words and using only a single binary feature: 'NewRule=1'. Extracted rules that already exist in a grammar are annotated with an additional feature: 'KnownRules=1'. OOVs are avoided by asking the user for translations of unknown words prior to translation. These are added to the grammars as new rules ('OOVFix=1').
+    %p <strong>Notes:</strong> <strike>In addition to dynamically adding each source/post-edit instance to the suffix array extractor,</strike> the system additionally uses the provided phrase alignments to extract new rules. The extraction follows the original Hiero grammar extraction, but using phrases instead of words and using only a single binary feature: 'NewRule=1'. Extracted rules that already exist in a grammar are annotated with an additional feature: 'KnownRules=1'. OOVs are avoided by asking the user for translations of unknown words prior to translation. These are added to the grammars as new rules ('OOVFix=1').
 
     %h3
       New Rules
@@ -225,7 +226,7 @@
           %th Rate
       %tbody
         - if pairwise_ranking_data["update_raw"]
-          - raw_update = SparseVector.from_kv(pairwise_ranking_data["update_raw"])
+          - raw_update = SparseVector.new(pairwise_ranking_data["update_raw"])
           - pairwise_ranking_data["weights_before"].default = 0
           - pairwise_ranking_data["weights_after"].keys.each.sort { |a,b| a <=> b }.each do |k|
             - diff = pairwise_ranking_data["weights_after"][k] - pairwise_ranking_data["weights_before"][k]
-- 
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