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Natural Language Processing

Language AI That
Reads, Reasons & Responds

Presear builds production NLP pipelines — LLM fine-tuning, entity extraction, semantic search, summarisation, and conversational AI — at enterprise scale.

96.4%
F1 on NER Benchmarks
200ms
Avg Response Latency
120+
NLP Systems Shipped
"Customer support query" Transformer Self-Attention Multi-head · FFN · Norm Answer token INPUT TOKENS TRANSFORMER BLOCK OUTPUT Embeddings

Technical Depth

Six NLP Paradigms We Build With

From large language model fine-tuning to real-time dialogue systems — we match the right NLP approach to your data, domain, and deployment constraints.

Large Language Models (LLMs)

Fine-tuning and deploying foundation language models — GPT-4, LLaMA, Mistral, Gemma — on proprietary enterprise data using full fine-tuning, LoRA, and QLoRA for domain adaptation. We also build retrieval-augmented generation (RAG) architectures that ground LLM outputs in your verified knowledge base, reducing hallucinations significantly.

LLaMA / Mistral LoRA / QLoRA RAG

Named Entity Recognition & Relation Extraction

Identifying and classifying entities — people, organisations, locations, dates, medical terms, legal clauses — and extracting relationships between them from unstructured text. We build span-based NER models, coreference resolvers, and knowledge graph population pipelines for domains with bespoke entity taxonomies.

SpanBERT NER / RE Knowledge Graphs

Semantic Search & Embeddings

Moving beyond keyword matching to meaning-aware retrieval — encoding documents and queries into dense vector spaces where semantic similarity enables accurate search across millions of documents in milliseconds. We build embedding pipelines with sentence transformers and deploy them on vector databases for enterprise-scale semantic retrieval.

Sentence-BERT Vector Search Pinecone / Weaviate

Sentiment & Intent Classification

Fine-grained opinion mining, aspect-level sentiment analysis, and multi-class intent detection for customer feedback, support tickets, and conversational inputs. We build models that go beyond positive/negative polarity to detect nuanced sentiments — frustration, urgency, satisfaction — at aspect and entity level for actionable business intelligence.

Aspect-Level SA Intent Detection Multi-label Classification

Summarisation & Generation

Abstractive and extractive summarisation of long-form documents — legal contracts, medical records, research papers, earnings calls — and controlled text generation for report drafting, product descriptions, and content automation. We fine-tune encoder-decoder models and instruction-tuned LLMs for domain-specific generation tasks with factual grounding.

BART / T5 Abstractive Summarisation Controlled Generation

Conversational Dialogue Systems

End-to-end dialogue systems with natural language understanding (NLU), dialogue state tracking, policy management, and natural language generation (NLG) — deployed as voice or text chatbots across customer support, internal helpdesks, and transactional workflows. We build multi-turn, context-aware systems with fallback handling and human escalation.

Rasa / LangChain NLU / DST Multi-turn Dialogue

Our Process

From Raw Text to Production NLP

A rigorous five-stage process. Click any step to explore what happens — and why it matters.

01
Data Collection & Cleaning
02
Tokenisation & Embedding
03
Model Training / Fine-tuning
04
Evaluation & Safety Testing
05
Production Serving
Step 01 of 05

Data Collection & Cleaning

Text data is rarely clean — enterprise corpora contain encoding errors, boilerplate noise, duplicate content, and sensitive PII that must be removed before any model training. We build automated data ingestion and cleaning pipelines that handle diverse formats — PDFs, emails, HTML, databases — and produce normalised, deduplicated, privacy-safe training sets.

  • Multi-source ingestion: PDFs, databases, APIs, web scrapes, email archives
  • Automated PII detection and redaction before any training
  • Near-duplicate detection and deduplication at corpus scale
  • Text normalisation, language identification, and encoding repair
Step 02 of 05

Tokenisation & Embedding

How text is represented determines what a model can learn. We select tokenisation strategies — BPE, WordPiece, SentencePiece — and embedding architectures appropriate to the domain vocabulary, language diversity, and downstream task, including domain-adaptive pretraining on your corpus when general-purpose tokenisers under-serve your vocabulary.

  • Domain vocabulary analysis and tokeniser selection or extension
  • Contextual embedding benchmarking: BERT, RoBERTa, domain-adapted
  • Multilingual tokenisation for cross-lingual NLP systems
  • Embedding evaluation: intrinsic similarity, downstream task transfer
Step 03 of 05

Model Training / Fine-tuning

We select the most efficient training strategy for your data and compute budget: full fine-tuning for maximum accuracy, LoRA/QLoRA for parameter efficiency, or domain-adaptive pretraining for vocabulary-heavy domains. All experiments are tracked with version control, enabling comparison across training configurations before production commitment.

  • Full fine-tuning vs. LoRA / QLoRA parameter-efficient fine-tuning
  • RLHF and DPO alignment for instruction-following LLM tasks
  • Continued pretraining on domain corpus for vocabulary adaptation
  • Distributed training with DeepSpeed ZeRO for large model fine-tuning
Step 04 of 05

Evaluation & Safety Testing

NLP models that perform well on benchmarks can still fail in production through hallucinations, biased outputs, or adversarial prompt exploitation. We run comprehensive evaluation batteries — task accuracy, hallucination rate, demographic bias audits, and red-teaming — before any model is approved for deployment.

  • Task-specific metrics: F1, BLEU, ROUGE, BERTScore, human evaluation
  • Hallucination rate measurement against grounded reference sets
  • Demographic and linguistic bias auditing across subgroups
  • Red-teaming: adversarial prompt injection and jailbreak testing
Step 05 of 05

Production Serving

NLP production requires low-latency, high-throughput inference at scale. We deploy models with vLLM or TGI for optimised transformer serving, apply quantisation (INT8/INT4) and speculative decoding for latency reduction, and containerise APIs behind autoscaling Kubernetes services — with monitoring for output drift, latency degradation, and token usage.

  • vLLM / TGI deployment with PagedAttention for high-throughput LLM serving
  • FastAPI REST and streaming API with token-level latency monitoring
  • INT8 / INT4 quantisation for inference cost reduction without accuracy loss
  • Output monitoring: drift detection, PII leakage alerts, latency SLA tracking

Real-World Impact

NLP Problems We've Solved

Production NLP deployments across industries — systems that extract value from language at scale, every day.

Customer Support Automation

Retail / Finance

Core Challenge

Support teams face thousands of repetitive enquiries daily — order status, account changes, refund requests — that consume agent capacity without adding value. Traditional rule-based chatbots fail on paraphrased queries and escalate too frequently, frustrating customers while still requiring significant human oversight.

Who Benefits

E-commerce platforms, financial services firms, telecoms operators, and SaaS companies that handle high-volume, multilingual customer queries and need intelligent triage, automated resolution, and context-aware escalation that measurably reduces first-response time and agent load.

Intent Classification RAG Conversational AI
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Legal Document Analysis

Legal

Core Challenge

Legal teams spend enormous hours reviewing contracts, identifying obligations, flagging risk clauses, and comparing versions — work that is repetitive, error-prone at scale, and blocks faster deal cycles. Manual review cannot keep pace with the volume of agreements in high-throughput legal and procurement workflows.

Who Benefits

Law firms, in-house legal departments, contract management platforms, and procurement teams that need automated clause extraction, risk scoring, obligation tracking, and redlining suggestions that accelerate review cycles without replacing legal judgment.

Legal NER Clause Classification LegalBERT
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Clinical Notes NLP

Healthcare

Core Challenge

Electronic health records contain vast amounts of unstructured clinical narrative — physician notes, discharge summaries, radiology reports — that cannot be queried or analysed at scale. Extracting structured clinical concepts, medications, diagnoses, and timelines from free text is essential for care quality analytics and research.

Who Benefits

Hospitals, health insurers, clinical research organisations, and digital health platforms that need structured clinical data extracted from unstructured EHR text for population health analytics, coding assistance, prior authorisation, and research cohort identification.

Clinical NER BioBERT / ClinicalBERT ICD Coding
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Multilingual Content Intelligence

Media

Core Challenge

Global media companies and publishers produce content across dozens of languages and must classify, tag, summarise, and make it searchable without per-language specialist teams. Multilingual NLP models enable consistent content intelligence across language boundaries at a fraction of the cost of manual processing.

Who Benefits

News agencies, OTT platforms, social media analytics firms, and global e-commerce companies that need multilingual content classification, cross-lingual search, automatic translation with domain preservation, and sentiment analytics across international markets.

mBERT / XLM-R Cross-lingual Search Multilingual NER
Request Case Study

Powered By

Our NLP Technology Ecosystem

Foundation models, vector databases, serving frameworks, and orchestration tools — chosen for production reliability and enterprise scale.

Hugging Face Transformers
LangChain LLM Orchestration
OpenAI API LLM Access
spaCy NLP Pipeline
NLTK NLP Toolkit
Sentence-Transformers Embeddings
Pinecone Vector Database
Weaviate Vector Database
FastAPI API Serving
vLLM LLM Serving
PyTorch Training Framework
Docker Deployment

Frequently Asked

NLP Questions

Answers to the questions engineering leaders, product teams, and CTOs ask before starting an NLP engagement with Presear Softwares.

Ask Our NLP Team
Can you fine-tune a language model on our proprietary data?
Yes — and this is often the most impactful investment you can make in NLP. We fine-tune open-source models (LLaMA, Mistral, Gemma, Qwen) on your domain-specific text using full fine-tuning or parameter-efficient methods (LoRA, QLoRA). We handle everything: data formatting and cleaning, hyperparameter tuning, safety evaluation, and deployment. All training can be performed on your infrastructure or an isolated cloud environment, ensuring your proprietary data never leaves your control. We also regularly fine-tune on as few as a few thousand domain examples when the task is well-scoped.
How do you handle multilingual text?
We use multilingual foundation models (XLM-RoBERTa, mBERT, NLLB) as backbones and fine-tune them on your target language set. For high-priority languages with substantial training data, we also evaluate language-specific models against multilingual baselines. For low-resource languages, we apply cross-lingual transfer and data augmentation strategies. We explicitly benchmark multilingual systems per-language before deployment — not just on aggregate scores — to ensure performance is acceptable across all target languages, not just the majority ones.
Can the model be hosted entirely on our infrastructure?
Yes. We regularly deploy NLP systems fully on-premise or in private cloud VPCs. Open-source LLMs (LLaMA, Mistral, Falcon) can be deployed on your GPU servers using vLLM or TGI with no external API calls. This gives you full data residency, no per-token costs, and no dependency on third-party model providers. We containerise everything with Docker and Kubernetes and provide runbooks for your operations team. Air-gapped deployments are fully supported.
What's the difference between RAG and fine-tuning — which should I use?
RAG (Retrieval-Augmented Generation) retrieves relevant documents from your knowledge base at inference time and passes them to the LLM as context — ideal when your knowledge base changes frequently, factual accuracy is critical, and you need answers to be grounded and citable. Fine-tuning adapts the model's weights to your domain vocabulary, writing style, and task format — ideal when you need consistent response format, domain expertise baked into the model, or faster inference without retrieval overhead. Most production systems benefit from both: a fine-tuned model paired with RAG for factual grounding. We help you design the right architecture for your specific requirements.
How do you evaluate NLP quality beyond accuracy metrics?
Automated metrics like F1, BLEU, and ROUGE are necessary but not sufficient. We supplement them with human evaluation protocols — expert annotators rating factual accuracy, fluency, and task completion — and domain-specific quality frameworks. For generative models, we measure hallucination rate against grounded reference documents. For classification models, we audit performance across demographic subgroups and linguistic variations. We also run red-teaming sessions to probe for failure modes under adversarial inputs, and establish ongoing production monitoring for output distribution drift.
Natural Language Processing

Ready to Deploy NLP That
Understands Your Domain?

Partner with Presear Softwares to build NLP systems that go beyond generic models — fine-tuned on your data, evaluated rigorously, and designed to deliver business value at production scale.