Method getTopicPrior

src/TopicModel/DMRModel.hpp:490–519

		}

		std::vector<Float> getTopicPrior(const std::string& metadata,
			const std::vector<std::string>& mdVec,
			bool raw = false
		) const override
		{
			Vid xid = metadataDict.toWid(metadata);
			if (xid == (Vid)-1) throw exc::InvalidArgument("unknown metadata '" + metadata + "'");

			Vector xs = Vector::Zero(mdVecSize);
			xs[0] = 1;
			for (auto& m : mdVec)
			{
				Vid x = multiMetadataDict.toWid(m);
				if (x == (Vid)-1) throw exc::InvalidArgument("unknown multi_metadata '" + m + "'");
				xs[x + 1] = 1;
			}

			std::vector<Float> ret(this->K);
			Eigen::Map<Vector> map{ ret.data(), (Eigen::Index)ret.size() };

			if (raw)
			{
				map = lambda.middleCols(xid * mdVecSize, mdVecSize) * xs;
			}
			else
			{
				map = (lambda.middleCols(xid * mdVecSize, mdVecSize) * xs).array().exp() + alphaEps;
			}
			return ret;
		}

		const Dictionary& getMetadataDict() const override { return metadataDict; }
		const Dictionary& getMultiMetadataDict() const override { return multiMetadataDict; }