8000 Check for reverse prompt by characters instead of tokens (#292) by tjohnman · Pull Request #330 · ggml-org/llama.cpp · GitHub
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Check for reverse prompt by characters instead of tokens (#292) #330

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Merged
merged 5 commits into from
Mar 21, 2023
Merged

Check for reverse prompt by characters instead of tokens (#292) #330

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b646ffa
Check for reverse prompt by characters instead of tokens (#292)
Mar 20, 2023
e9f7747
Update main.cpp
tjohnman Mar 20, 2023
6242d1c
Cleanup.
Mar 20, 2023
1228080
Remove unnecessary use of std::stringstream.
Mar 20, 2023
c8e940e
Merge branch 'master' into bugfix-292
ggerganov Mar 21, 2023
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32 changes: 12 additions & 20 deletions main.cpp
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8000
Original file line number Diff line number Diff line change
Expand Up @@ -885,15 +885,8 @@ int main(int argc, char ** argv) {
params.antiprompt.push_back("### Instruction:\n\n");
}

// tokenize the reverse prompt
std::vector<std::vector<llama_vocab::id>> antipromptv_inp;

for (auto antiprompt : params.antiprompt) {
antipromptv_inp.push_back(::llama_tokenize(vocab, antiprompt, false));
}

// enable interactive mode if reverse prompt is specified
if (antipromptv_inp.size() != 0) {
if (params.antiprompt.size() != 0) {
params.interactive = true;
}

Expand All @@ -917,15 +910,9 @@ int main(int argc, char ** argv) {

fprintf(stderr, "%s: interactive mode on.\n", __func__);

if(antipromptv_inp.size()) {
for (size_t apindex = 0; apindex < antipromptv_inp.size(); ++apindex) {
auto antiprompt_inp = antipromptv_inp.at(apindex);
fprintf(stderr, "%s: reverse prompt: '%s'\n", __func__, params.antiprompt.at(apindex).c_str());
fprintf(stderr, "%s: number of tokens in reverse prompt = %zu\n", __func__, antiprompt_inp.size());
for (int i = 0; i < (int) antiprompt_inp.size(); i++) {
fprintf(stderr, "%6d -> '%s'\n", antiprompt_inp[i], vocab.id_to_token.at(antiprompt_inp[i]).c_str());
}
fprintf(stderr, "\n");
if(params.antiprompt.size()) {
for (auto antiprompt : params.antiprompt) {
fprintf(stderr, "Reverse prompt: '%s'\n", antiprompt.c_str());
}
}
}
Expand Down Expand Up @@ -1042,9 +1029,14 @@ int main(int argc, char ** argv) {
// check if we should prompt the user for more
if (params.interactive && (int) embd_inp.size() <= input_consumed) {
// check for reverse prompt
for (auto antiprompt_inp : antipromptv_inp) {
if (antiprompt_inp.size() && std::equal(antiprompt_inp.rbegin(), antiprompt_inp.rend(), last_n_tokens.rbegin())) {
// reverse prompt found
std::string last_output;
for (auto id : last_n_tokens) {
last_output += vocab.id_to_token[id];
}

// Check if each of the reverse prompts appears at the end of the output.
for (std::string antiprompt : params.antiprompt) {
if (last_output.find(antiprompt.c_str(), last_output.length() - antiprompt.length(), antiprompt.length()) != std::string::npos) {
is_interacting = true;
break;
}
Expand Down
0