Bipolar extension of EDAS

BF-EDAS extends EDAS to Bipolar Fuzzy Numbers (BFN: μ⁺ ∈ [0,1], ν⁻ ∈ [-1,0]). Input each cell as a pair (μ⁺, ν⁻). Cost criteria are automatically complemented in Step 2. The algorithm computes a BFN average solution via geometric-mean BFWA (Step 4), converts BFNs to crisp scores via Δ(B)=(1+μ⁺+ν⁻)/2 (Step 5), then applies standard EDAS PDA/NDA logic on those scores (Steps 5–9). Higher Appraisal Score (AS) is better. Supports multiple experts via BFWA aggregation (Step 3).