export type ResearchSentiment = "positive" | "negative" | "neutral" | "mixed";
export declare function detectResearchSentiment(text: string): ResearchSentiment;
export declare function inferResearchCategory(text: string, tags?: string[]): string;
export declare function extractResearchEntities(text: string): string[];
export declare function extractResearchSignals(text: string, tags?: string[], entities?: string[], limit?: number): string[];
export declare function normalizeResearchSignal(input: string): string;
export declare function formatResearchSignal(signal: string): string;
export declare function stripFindingPrefix(finding: string): string;