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r217: fixed a bug in LIS chaining score

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Also fall back to DP chaining more often
This commit is contained in:
Heng Li
2020-04-10 13:25:25 -04:00
parent 15591c9038
commit 22b2e1e9e1
2 changed files with 6 additions and 4 deletions
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Hash_Table.cpp
+5 -3
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@@ -361,6 +361,7 @@ int32_t ha_chain_lis_core(k_mer_hit *a, int32_t n_a, Chain_Data *dp, int32_t min
int32_t *tmp = (int32_t*)dp->tmp;
int32_t i, m, *b = tmp, *M = tmp + n_a;
int32_t tot_indel = 0, tot_len = 0;
double bw_pen;
if (n_a < 2) return -1;
for (i = 1; i < n_a; ++i)
if (a[i-1].self_offset >= a[i].self_offset)
@@ -370,6 +371,7 @@ int32_t ha_chain_lis_core(k_mer_hit *a, int32_t n_a, Chain_Data *dp, int32_t min
b[i] = i;
m = n_a;
} else m = ha_kmer_hit_lis(n_a, a, b, M);
bw_pen = 1.0 / bw_thres;
dp->score[0] = 0, dp->pre[0] = -1, dp->indels[0] = 0, dp->self_length[0] = 0;
for (i = 1; i < m; ++i) {
int32_t j0 = b[i-1], j1 = b[i], score, dg;
@@ -379,12 +381,12 @@ int32_t ha_chain_lis_core(k_mer_hit *a, int32_t n_a, Chain_Data *dp, int32_t min
double gap_rate;
tot_indel += dd;
tot_len += dy;
if (tot_indel > tot_len * bw_thres)
break;
if (tot_indel > tot_len * bw_thres) break;
dg = dx < dy? dx : dy;
if (dd > 10 && dd > dg * bw_thres) break;
score = dg < min_sc? dg : min_sc;
gap_rate = (double)tot_indel / tot_len;
score -= (int)(gap_rate * score * bw_thres);
score -= (int)(gap_rate * score * bw_pen);
dp->score[i] = dp->score[i-1] + score;
dp->pre[i] = i - 1;
dp->indels[i] = tot_indel;