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Posted to commits@joshua.apache.org by mj...@apache.org on 2016/04/29 06:47:09 UTC
[07/10] incubator-joshua git commit: removed string-based
HypothesisExtractor, fixed test-case outputs
removed string-based HypothesisExtractor, fixed test-case outputs
The phrase-based decoder is built on hypergraphs and is fine to use the new int-based extractors
Also, phrase-based extraction had use-unique-nbest hard-coded to true, removed this. Fixed test cases by removing alignment string from output, "use_align_index" no longer works at all
Project: http://git-wip-us.apache.org/repos/asf/incubator-joshua/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-joshua/commit/2fe4ad63
Tree: http://git-wip-us.apache.org/repos/asf/incubator-joshua/tree/2fe4ad63
Diff: http://git-wip-us.apache.org/repos/asf/incubator-joshua/diff/2fe4ad63
Branch: refs/heads/master
Commit: 2fe4ad63a38186724c1543081471d7a4cbf5c7d2
Parents: 62072fe
Author: Matt Post <po...@cs.jhu.edu>
Authored: Fri Apr 29 00:30:37 2016 -0400
Committer: Matt Post <po...@cs.jhu.edu>
Committed: Fri Apr 29 00:31:38 2016 -0400
----------------------------------------------------------------------
.../decoder/hypergraph/KBestExtractor.java | 143 ++---
test/decoder/phrase/constrained/config | 3 +-
test/decoder/phrase/constrained/output.gold | 10 +-
test/decoder/phrase/decode/config | 2 +-
test/decoder/phrase/decode/config.packed | 2 +-
test/decoder/phrase/decode/output.gold | 2 +-
.../phrase/unique-hypotheses/joshua.config | 4 +-
.../phrase/unique-hypotheses/output.gold | 600 +++++++++----------
8 files changed, 373 insertions(+), 393 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/src/joshua/decoder/hypergraph/KBestExtractor.java
----------------------------------------------------------------------
diff --git a/src/joshua/decoder/hypergraph/KBestExtractor.java b/src/joshua/decoder/hypergraph/KBestExtractor.java
index 9107cea..a41ee66 100644
--- a/src/joshua/decoder/hypergraph/KBestExtractor.java
+++ b/src/joshua/decoder/hypergraph/KBestExtractor.java
@@ -31,8 +31,6 @@ import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.PriorityQueue;
-import java.util.Stack;
-import java.util.regex.Matcher;
import joshua.corpus.Vocabulary;
import joshua.decoder.BLEU;
@@ -95,7 +93,6 @@ import joshua.util.FormatUtils;
public class KBestExtractor {
private final JoshuaConfiguration joshuaConfiguration;
private final String outputFormat;
- private final boolean stackDecoding;
private final HashMap<HGNode, VirtualNode> virtualNodesTable = new HashMap<HGNode, VirtualNode>();
// static final String rootSym = JoshuaConfiguration.goal_symbol;
@@ -135,7 +132,6 @@ public class KBestExtractor {
this.joshuaConfiguration = joshuaConfiguration;
this.outputFormat = this.joshuaConfiguration.outputFormat;
- this.stackDecoding = this.joshuaConfiguration.search_algorithm.equals("stack");
this.extractUniqueNbest = joshuaConfiguration.use_unique_nbest;
this.weights = weights;
@@ -177,9 +173,10 @@ public class KBestExtractor {
// DerivationState derivationState = getKthDerivation(node, k);
if (derivationState != null) {
// ==== read the kbest from each hgnode and convert to output format
- String hypothesis = unescapeSpecialSymbols(
- removeSentenceMarkers(
- derivationState.getHypothesis()));
+ String hypothesis = formatForOutput(
+ unescapeSpecialSymbols(
+ removeSentenceMarkers(
+ derivationState.getHypothesis())), derivationState);
/*
* To save space, the decoder only stores the model cost,
@@ -193,8 +190,8 @@ public class KBestExtractor {
outputString = outputFormat
.replace("%k", Integer.toString(k))
- .replace("%s", hypothesis)
- .replace("%S", DeNormalize.processSingleLine(hypothesis))
+ .replace("%s", formatForOutput(hypothesis, derivationState))
+ .replace("%S", DeNormalize.processSingleLine(formatForOutput(hypothesis, derivationState)))
// TODO (kellens): Fix the recapitalization here
.replace("%i", Integer.toString(sentence.id()))
.replace("%f", joshuaConfiguration.moses ? features.mosesString() : features.toString())
@@ -215,7 +212,7 @@ public class KBestExtractor {
/* %a causes output of word level alignments between input and output hypothesis */
if (outputFormat.contains("%a")) {
- outputString = outputString.replace("%a", derivationState.getWordAlignment());
+ outputString = outputString.replace("%a", derivationState.getWordAlignmentString());
}
}
@@ -226,6 +223,52 @@ public class KBestExtractor {
// =========================== end kbestHypergraph
/**
+ * If requested, projects source-side lettercase to target, and appends the alignment from
+ * to the source-side sentence in ||s.
+ *
+ * @param hypothesis
+ * @param state
+ * @return
+ */
+ private String formatForOutput(String hypothesis, DerivationState state) {
+ String output = hypothesis;
+
+ if (joshuaConfiguration.project_case) {
+ String[] tokens = hypothesis.split("\\s+");
+ List<List<Integer>> points = state.getWordAlignment();
+ for (int i = 0; i < points.size(); i++) {
+ List<Integer> target = points.get(i);
+ for (int source: target) {
+ Token token = sentence.getTokens().get(source + 1); // skip <s>
+ String annotation = "";
+ if (token != null && token.getAnnotation("lettercase") != null)
+ annotation = token.getAnnotation("lettercase");
+ if (source != 0 && annotation.equals("upper"))
+ tokens[i] = FormatUtils.capitalize(tokens[i]);
+ else if (annotation.equals("all-upper"))
+ tokens[i] = tokens[i].toUpperCase();
+ }
+ }
+
+ output = String.join(" ", tokens);
+ }
+
+ if (joshuaConfiguration.include_align_index) {
+ String[] tokens = hypothesis.split("\\s+");
+ List<List<Integer>> points = state.getWordAlignment();
+ for (int i = 0; i < tokens.length; i++) {
+ if (i < points.size()) {
+ tokens[i] += String.format(" %d-%d", points.get(i).get(0),
+ points.get(i).get(points.get(i).size()-1));
+ }
+ }
+ output = String.join(" ", tokens);
+ }
+
+ return output;
+ }
+
+ /**
* Convenience function for k-best extraction that prints to STDOUT.
*/
public void lazyKBestExtractOnHG(HyperGraph hg, int topN) throws IOException {
@@ -732,9 +775,15 @@ public class KBestExtractor {
return visitor;
}
- private String getWordAlignment() {
+ private String getWordAlignmentString() {
return visit(new WordAlignmentExtractor()).toString();
}
+
+ private List<List<Integer>> getWordAlignment() {
+ WordAlignmentExtractor extractor = new WordAlignmentExtractor();
+ visit(extractor);
+ return extractor.getFinalWordAlignments();
+ }
private String getTree() {
return visit(new TreeExtractor()).toString();
@@ -751,11 +800,7 @@ public class KBestExtractor {
* that is correct also for Side.SOURCE cases.
*/
private String getHypothesis(final Side side) {
- if (stackDecoding) {
- return visit(new HypothesisExtractor(side)).toString();
- } else {
- return visit(new OutputStringExtractor(side.equals(Side.SOURCE))).toString();
- }
+ return visit(new OutputStringExtractor(side.equals(Side.SOURCE))).toString();
}
private FeatureVector getFeatures() {
@@ -828,72 +873,6 @@ public class KBestExtractor {
}
/**
- * String-based HypothesisExtractor that works with Joshua's Phrase decoder.
- * It is slower than an int[]-based extraction due to many String operations.
- * It also contains a bug for Hiero KBest with NT-reordering rules when
- * the source side is extracted (due to its dependency on target-side ordered
- * hypergraph traversal.
- */
- public class HypothesisExtractor implements DerivationVisitor {
-
- private Side side;
- private Stack<String> outputs;
-
- public HypothesisExtractor(Side side) {
- this.side = side;
- outputs = new Stack<String>();
- }
-
- String ntMatcher = ".*" + Rule.NT_REGEX + ".*";
-
- void merge(String words) {
- if (!words.matches(ntMatcher) && outputs.size() > 0 && outputs.peek().matches(ntMatcher)) {
- String parentWords = outputs.pop();
- String replaced = parentWords.replaceFirst(Rule.NT_REGEX, Matcher.quoteReplacement(words));
-
- merge(replaced);
- } else {
- outputs.add(words);
- }
- }
-
- @Override
- /**
- * Whenever we reach a rule in the depth-first derivaiton, we add it to the stack
- * via a call to the merge() function.
- */
- public void before(DerivationState state, int level, int tailNodeIndex) {
- Rule rule = state.edge.getRule();
- if (rule != null)
- if (side == Side.TARGET) {
- // Output the alignment Moses-style, skipping <s> and </s>, and converting to indices
- // in original sentence
- String alignment = "";
- if (joshuaConfiguration.include_align_index
- && state.parentNode.j != sentence.length() && state.parentNode.j != 1) {
- int i = state.parentNode.j - 1 - state.edge.getRule().getFrench().length + state.edge.getRule().getArity();
- alignment = String.format(" |%d-%d|", i, state.parentNode.j-2);
- }
- merge(String.format("%s%s", state.edge.getRule().getEnglishWords(), alignment));
- } else
- merge(state.edge.getRule().getFrenchWords());
-
- }
-
- @Override
- public void after(DerivationState state, int level, int tailNodeIndex) {
- }
-
- /**
- * After all rules in the grammar have been merged, there should be one item on the stack, which
- * is the complete target (or source) string.
- */
- public String toString() {
- return outputs.pop().replaceAll("<s> ", "").replace(" </s>", "");
- }
- }
-
- /**
* Assembles a Penn treebank format tree for a given derivation.
*/
public class TreeExtractor implements DerivationVisitor {
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/test/decoder/phrase/constrained/config
----------------------------------------------------------------------
diff --git a/test/decoder/phrase/constrained/config b/test/decoder/phrase/constrained/config
index 3979bd6..be45e0a 100644
--- a/test/decoder/phrase/constrained/config
+++ b/test/decoder/phrase/constrained/config
@@ -8,8 +8,9 @@ top-n = 5
output-format = %i ||| %s ||| %f ||| %c
-include-align-index = true
+include-align-index = false
reordering-limit = 10
+use-unique-nbest = false
# And these are the feature functions to activate.
feature-function = OOVPenalty
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/test/decoder/phrase/constrained/output.gold
----------------------------------------------------------------------
diff --git a/test/decoder/phrase/constrained/output.gold b/test/decoder/phrase/constrained/output.gold
index 238387c..a784043 100644
--- a/test/decoder/phrase/constrained/output.gold
+++ b/test/decoder/phrase/constrained/output.gold
@@ -1,5 +1,5 @@
-0 ||| President Obama |8-8| to |7-7| hinder |4-4| a strategy |0-1| for |3-3| Republican |2-2| re @-@ election |5-6| ||| tm_pt_0=-15.792 tm_pt_1=-17.550 tm_pt_2=-14.599 tm_pt_3=-18.298 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-24.000 PhrasePenalty=7.000 ||| -15.163
-0 ||| President Obama |8-8| to |7-7| hinder |4-4| a |0-0| strategy |1-1| for |3-3| Republican |2-2| re @-@ election |5-6| ||| tm_pt_0=-16.919 tm_pt_1=-17.550 tm_pt_2=-14.917 tm_pt_3=-18.298 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-24.000 PhrasePenalty=8.000 ||| -15.505
-0 ||| President Obama |8-8| to hinder |3-4| a strategy |0-1| for |7-7| Republican |2-2| re @-@ election |5-6| ||| tm_pt_0=-14.986 tm_pt_1=-17.951 tm_pt_2=-14.075 tm_pt_3=-18.699 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-32.000 PhrasePenalty=6.000 ||| -15.762
-0 ||| President Obama |8-8| to hinder |3-4| a |0-0| strategy |1-1| for |7-7| Republican |2-2| re @-@ election |5-6| ||| tm_pt_0=-16.112 tm_pt_1=-17.951 tm_pt_2=-14.393 tm_pt_3=-18.699 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-32.000 PhrasePenalty=7.000 ||| -16.103
-0 ||| President Obama |8-8| to |3-3| hinder |4-4| a strategy |0-1| for |7-7| Republican |2-2| re @-@ election |5-6| ||| tm_pt_0=-16.329 tm_pt_1=-17.951 tm_pt_2=-15.136 tm_pt_3=-18.699 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-32.000 PhrasePenalty=7.000 ||| -16.257
+0 ||| President Obama to hinder a strategy for Republican re @-@ election ||| tm_pt_0=-15.792 tm_pt_1=-17.550 tm_pt_2=-14.599 tm_pt_3=-18.298 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-24.000 PhrasePenalty=7.000 ||| -15.163
+0 ||| President Obama to hinder a strategy for Republican re @-@ election ||| tm_pt_0=-16.919 tm_pt_1=-17.550 tm_pt_2=-14.917 tm_pt_3=-18.298 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-24.000 PhrasePenalty=8.000 ||| -15.505
+0 ||| President Obama to hinder a strategy for Republican re @-@ election ||| tm_pt_0=-14.986 tm_pt_1=-17.951 tm_pt_2=-14.075 tm_pt_3=-18.699 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-32.000 PhrasePenalty=6.000 ||| -15.762
+0 ||| President Obama to hinder a strategy for Republican re @-@ election ||| tm_pt_0=-16.112 tm_pt_1=-17.951 tm_pt_2=-14.393 tm_pt_3=-18.699 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-32.000 PhrasePenalty=7.000 ||| -16.103
+0 ||| President Obama to hinder a strategy for Republican re @-@ election ||| tm_pt_0=-16.329 tm_pt_1=-17.951 tm_pt_2=-15.136 tm_pt_3=-18.699 lm_0=-29.452 OOVPenalty=0.000 WordPenalty=-4.777 Distortion=-32.000 PhrasePenalty=7.000 ||| -16.257
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/test/decoder/phrase/decode/config
----------------------------------------------------------------------
diff --git a/test/decoder/phrase/decode/config b/test/decoder/phrase/decode/config
index 1edccc5..9987b1a 100644
--- a/test/decoder/phrase/decode/config
+++ b/test/decoder/phrase/decode/config
@@ -9,7 +9,7 @@ top-n = 1
output-format = %i ||| %s ||| %f ||| %c
-include-align-index = true
+include-align-index = false
reordering-limit = 6
# And these are the feature functions to activate.
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/test/decoder/phrase/decode/config.packed
----------------------------------------------------------------------
diff --git a/test/decoder/phrase/decode/config.packed b/test/decoder/phrase/decode/config.packed
index 1edccc5..9987b1a 100644
--- a/test/decoder/phrase/decode/config.packed
+++ b/test/decoder/phrase/decode/config.packed
@@ -9,7 +9,7 @@ top-n = 1
output-format = %i ||| %s ||| %f ||| %c
-include-align-index = true
+include-align-index = false
reordering-limit = 6
# And these are the feature functions to activate.
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/test/decoder/phrase/decode/output.gold
----------------------------------------------------------------------
diff --git a/test/decoder/phrase/decode/output.gold b/test/decoder/phrase/decode/output.gold
index 509a3de..0083345 100644
--- a/test/decoder/phrase/decode/output.gold
+++ b/test/decoder/phrase/decode/output.gold
@@ -1 +1 @@
-0 ||| a strategy |0-1| republican |2-2| to hinder |3-4| reelection |5-6| Obama |7-8| ||| tm_pt_0=-9.702 tm_pt_1=-10.800 tm_pt_2=-7.543 tm_pt_3=-8.555 lm_0=-19.117 OOVPenalty=0.000 WordPenalty=-3.040 Distortion=0.000 PhrasePenalty=5.000 ||| -7.496
+0 ||| a strategy republican to hinder reelection Obama ||| tm_pt_0=-9.702 tm_pt_1=-10.800 tm_pt_2=-7.543 tm_pt_3=-8.555 lm_0=-19.117 OOVPenalty=0.000 WordPenalty=-3.040 Distortion=0.000 PhrasePenalty=5.000 ||| -7.496
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/test/decoder/phrase/unique-hypotheses/joshua.config
----------------------------------------------------------------------
diff --git a/test/decoder/phrase/unique-hypotheses/joshua.config b/test/decoder/phrase/unique-hypotheses/joshua.config
index 31c6b44..c35b267 100644
--- a/test/decoder/phrase/unique-hypotheses/joshua.config
+++ b/test/decoder/phrase/unique-hypotheses/joshua.config
@@ -5,9 +5,9 @@ lm = kenlm 5 true false 100 lm.1.gz
mark-oovs = false
pop-limit = 100
top-n = 300
-use-unique-nbest = false
+use-unique-nbest = true
output-format = %s
-include-align-index = true
+include-align-index = false
feature-function = OOVPenalty
feature-function = WordPenalty
feature_function = Distortion
http://git-wip-us.apache.org/repos/asf/incubator-joshua/blob/2fe4ad63/test/decoder/phrase/unique-hypotheses/output.gold
----------------------------------------------------------------------
diff --git a/test/decoder/phrase/unique-hypotheses/output.gold b/test/decoder/phrase/unique-hypotheses/output.gold
index 4c3e6b6..0e5fb98 100644
--- a/test/decoder/phrase/unique-hypotheses/output.gold
+++ b/test/decoder/phrase/unique-hypotheses/output.gold
@@ -1,300 +1,300 @@
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder the |4-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to obstruct the |3-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| reelection |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to obstruct the |3-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the reelection |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct the |3-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| reelection |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct the |3-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to hinder |3-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| to hinder |3-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to hinder |3-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to obstruct |3-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the reelection |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| to obstruct |3-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper the |4-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder the |4-5| reelection |6-6| Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| reelection |6-6| Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| to hinder |3-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the reelection |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to obstruct |3-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| to obstruct the |3-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct |3-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election |5-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct the |4-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder the |4-5| re @-@ election |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| to |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct |3-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| re @-@ election |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| to obstruct |3-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper the |4-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| reelection |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| reelection |6-6| Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hindering the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| reelection |6-6| Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct |3-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct the |3-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder the |4-5| reelection |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| to |3-3| hinder |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| reelection |6-6| of Obama |7-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election |5-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hindering the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| reelection |6-6| Obama |7-8|
-a strategy |0-1| republican |2-2| to |3-3| hinder |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| the re @-@ election |5-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| to hinder |3-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hindering |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct the |4-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| re @-@ election |6-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| re @-@ election |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| obstructing |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to |3-3| hinder the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct |3-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to |3-3| obstruct |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hindering |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| reelection |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering |4-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| hinder |4-4| for |3-3| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| the reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| reelection |6-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| hinder |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| reelection |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| re @-@ election |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| obstructing |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to |3-3| hinder the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to |3-3| hinder |4-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to |3-3| obstruct |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hindering |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to obstruct |3-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| reelection |6-6| Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| hinder |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| the |5-5| hinder |4-4| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| hinder |4-4| for |3-3| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the re @-@ election |5-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| obstructing |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to |3-3| obstruct |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| reelection |6-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| reelection |6-6| the |5-5| of |7-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| hinder the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| the re @-@ election of |5-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper the |4-5| reelection |6-6| Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstructing |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| hinder the |4-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| obstruct |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper |4-4| the re @-@ election |5-6| of Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| reelection |5-6| Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering the |4-5| re @-@ election of |6-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| obstruct |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to hinder |3-4| reelection |5-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hindering |4-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to obstruct the |3-5| reelection |6-6| Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the reelection |5-6| Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| hinder |4-4| for |3-3| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to hinder |3-4| the reelection |5-6| of |7-7| Obama |8-8|
-strategy |1-1| a |0-0| republican |2-2| for |3-3| hinder |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| obstruct |4-4| for |3-3| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| re @-@ election |6-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstructing |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| hinder the |4-5| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| hinder |4-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| obstruct |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstructing |4-4| the re @-@ election of |5-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to |3-3| obstruct |4-4| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to obstruct |3-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| Obama |8-8| of |7-7|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| the |5-5| hinder |4-4| reelection |6-6| of |7-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| hinder |4-4| for |3-3| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| to hinder |3-4| the |5-5| reelection |6-6| Obama |7-8|
-a strategy |0-1| republican |2-2| for |3-3| hindering |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| reelection |6-6| of |7-7| the |5-5| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| obstructing |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-strategy |1-1| a |0-0| republican |2-2| for |3-3| hinder |4-4| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| hinder |4-4| for |3-3| the re @-@ election of |5-7| Obama |8-8|
-a |0-0| strategy |1-1| republican |2-2| to |3-3| obstruct |4-4| the re @-@ election |5-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| obstruct |4-4| for |3-3| the |5-5| reelection |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hamper the |4-5| re @-@ election |6-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| reelection |6-6| of Obama |7-8|
-a |0-0| strategy |1-1| republican |2-2| for |3-3| hinder |4-4| reelection |6-6| the |5-5| of |7-7| Obama |8-8|
-an |0-0| strategy |1-1| republican |2-2| for |3-3| hamper |4-4| the |5-5| re @-@ election |6-6| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct the |4-5| reelection |6-6| Obama |7-8|
-a strategy |0-1| republican |2-2| to |3-3| hinder |4-4| the |5-5| re @-@ election of |6-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| obstruct |4-4| reelection |6-6| the |5-5| of |7-7| Obama |8-8|
-a strategy |0-1| republican |2-2| for |3-3| hinder |4-4| the |5-5| of |7-7| reelection |6-6| Obama |8-8|
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