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

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

* Update main.cpp

Wording.

* Cleanup.

* Remove unnecessary use of std::stringstream.

---------

Co-authored-by: Johnman <tjohnman@github>
Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
This commit is contained in:
tjohnman 2023-03-21 17:04:43 +01:00 committed by GitHub
parent 3bfa3b43b7
commit d5f56a5e5a
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1 changed files with 12 additions and 20 deletions
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main.cpp
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@ -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;
}
@ -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());
}
}
}
@ -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;
}