From bf58cc0cf54135eb17e897ab666d04060b6bdfcf Mon Sep 17 00:00:00 2001
From: txh18 <cloudygooseg@gmail.com>
Date: Fri, 13 Nov 2015 16:39:11 +0800
Subject: added loadstring

---
 nerv/examples/lmptb/tnn_ptb_main.lua | 64 ++++++++++++++++++++++++++----------
 1 file changed, 46 insertions(+), 18 deletions(-)

diff --git a/nerv/examples/lmptb/tnn_ptb_main.lua b/nerv/examples/lmptb/tnn_ptb_main.lua
index a59a44b..f978247 100644
--- a/nerv/examples/lmptb/tnn_ptb_main.lua
+++ b/nerv/examples/lmptb/tnn_ptb_main.lua
@@ -150,7 +150,8 @@ function load_net(global_conf, next_iter)
     return tnn, paramRepo
 end
 
-local train_fn, valid_fn, test_fn, global_conf
+local train_fn, valid_fn, test_fn
+global_conf = {}
 local set = arg[1] --"test"
 
 if (set == "ptb") then
@@ -217,11 +218,30 @@ global_conf.train_fn_shuf = global_conf.work_dir .. '/train_fn_shuf'
 global_conf.train_fn_shuf_bak = global_conf.train_fn_shuf .. '_bak'
 global_conf.param_fn = global_conf.work_dir .. "/params"
 
-printf("%s printing global_conf\n", global_conf.sche_log_pre)
+lr_half = false --can not be local, to be set by loadstring
+start_iter = -1
+ppl_last = 100000
+if (arg[2] ~= nil) then
+    printf("%s applying arg[2](%s)...\n", global_conf.sche_log_pre, arg[2])
+    loadstring(arg[2])() 
+    nerv.LMUtil.wait(0.5)
+else
+    printf("%s not user setting, all default...\n", global_conf.sche_log_pre)
+end
+
+----------------printing options---------------------------------
+printf("%s printing global_conf...\n", global_conf.sche_log_pre)
 for id, value in pairs(global_conf) do
     print(id, value)
 end
 nerv.LMUtil.wait(2)
+printf("%s printing training scheduling options...\n", global_conf.sche_log_pre)
+print("lr_half", lr_half)
+print("start_iter", start_iter)
+print("ppl_last", ppl_last)
+printf("%s printing training scheduling end.\n", global_conf.sche_log_pre)
+nerv.LMUtil.wait(2)
+------------------printing options end------------------------------
 
 printf("%s creating work_dir...\n", global_conf.sche_log_pre)
 os.execute("mkdir -p "..global_conf.work_dir)
@@ -231,25 +251,33 @@ local vocab = nerv.LMVocab()
 global_conf["vocab"] = vocab
 printf("%s building vocab...\n", global_conf.sche_log_pre)
 global_conf.vocab:build_file(global_conf.vocab_fn, false)
+ppl_rec = {} 
 
-prepare_parameters(global_conf, -1) --randomly generate parameters
+if (start_iter == -1) then 
+    prepare_parameters(global_conf, -1) --randomly generate parameters
 
-print("===INITIAL VALIDATION===") 
-local tnn, paramRepo = load_net(global_conf, 0)
-local result = LMTrainer.lm_process_file(global_conf, global_conf.valid_fn, tnn, false) --false update!
-nerv.LMUtil.wait(3)
-ppl_rec = {} 
-ppl_rec[0] = {} 
-ppl_rec[0].valid = result:ppl_all("rnn")  
-ppl_last = ppl_rec[0].valid 
-ppl_rec[0].train = 0 
-ppl_rec[0].test = 0
-ppl_rec[0].lr = 0 
-print() 
-local lr_half = false 
+    print("===INITIAL VALIDATION===") 
+    local tnn, paramRepo = load_net(global_conf, 0)
+    local result = LMTrainer.lm_process_file(global_conf, global_conf.valid_fn, tnn, false) --false update!
+    nerv.LMUtil.wait(1)
+    ppl_rec[0] = {} 
+    ppl_rec[0].valid = result:ppl_all("rnn")  
+    ppl_last = ppl_rec[0].valid 
+    ppl_rec[0].train = 0 
+    ppl_rec[0].test = 0
+    ppl_rec[0].lr = 0 
+
+    start_iter = 1
+
+    print() 
+end
+
+if (start_iter == 0) then
+    nerv.error("start_iter should not be zero")
+end
 local final_iter
-for iter = 1, global_conf.max_iter, 1 do
-    final_iter = iter
+for iter = start_iter, global_conf.max_iter, 1 do
+    final_iter = iter --for final testing
     global_conf.sche_log_pre = "[SCHEDULER ITER"..iter.." LR"..global_conf.lrate.."]:" 
     tnn, paramRepo = load_net(global_conf, iter - 1) 
     printf("===ITERATION %d LR %f===\n", iter, global_conf.lrate) 
-- 
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