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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:, s% N% L+ @& N/ l
to do-business
( x# v$ ?3 v7 n) x4 j rt random 360+ v0 H* g0 a2 I0 c" R
fd 1
$ ^' B- d6 v9 o! n% Z/ B ifelse(other turtles-here != nobody)[- j0 f9 ~/ e8 ?) p% s( ?7 u9 j
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
5 G8 w+ A" h. s; l" p; @$ l   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( q& ?( ^8 i4 f( g9 M% H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; `% L% S9 M! j7 A& o
   set [trade-record-one-len] of self length [trade-record-one] of self2 \( w2 I4 A: X& `' A9 B0 u
   set trade-record-current( list (timer) (random money-upper-limit))
4 v) ?. o9 G3 [! I9 b/ @' H$ X
2 c, A5 \( d# [5 E: [1 Q' [问题的提示如下:! m, g! a6 }: d% C, s* r/ V8 T
8 i. |) J: r) a
error while turtle 50 running OF in procedure DO-BUSINESS' _. |. }" X' B, F% v
  called by procedure GO
7 o6 |+ V; A; }: LOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 N# K+ Z7 E2 Q
(halted running of go)
. k- e5 }/ g; E! G! [4 j: L9 q1 ?# _
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~: m9 l3 O# s' S  Y
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
( `' C4 K& A. gglobals[
/ \7 V9 s* @4 u, _+ `# I! D2 Q% ?xmax* `9 K$ f$ R+ F* j- ^
ymax
- @0 U" l/ V3 u, {global-reputation-list8 R7 q! M- G  a
: L  [$ k5 ^4 S2 t4 q+ Z
;;
每一个turtle的全局声誉都存在此LIST
5 @+ F# t$ o: f5 Ucredibility-list
7 ?$ v% q+ E* [8 k: H& B6 y;;
每一个turtle的评价可信度& M5 U3 f! X( r% _
honest-service
' D, a) {( w: z! sunhonest-service
2 Y/ e% L  o/ f# G5 doscillation9 e- t0 N8 O( F7 X/ x
rand-dynamic- ~4 Q0 n) a, ~% X# Y, e- L8 }6 f
]+ w4 j! u/ c7 O& Y) a1 X

2 J6 _* ~3 q7 z9 s% O' eturtles-own[
& B3 n* q' p- H" A/ m# J) atrade-record-all
  i8 ]6 b9 H2 x$ [0 ];;a list of lists,
trade-record-one组成
0 C' Z! O; q' H8 \8 m" @4 U3 ltrade-record-one
# t4 x. V  j- q* T, T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% x% G3 s0 ]3 K' v/ w8 @; m, }/ b3 N; M& k  n
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
1 l" ^& l- N* D3 @1 _7 ntrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]; g$ ]% @: i# J3 G; }* H0 _7 y3 |
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list/ y5 W( ~3 P3 I, Z. i1 o# T9 i
neighbor-total7 v8 }) S( A8 D' P  [
;;
记录该turtle的邻居节点的数目* L+ |5 l- }: b, [# M7 p
trade-time
" d  O$ j7 x+ d( F1 Y  T1 f/ l;;
当前发生交易的turtle的交易时间" t8 m  f; l' ~* B; c5 a/ P8 o$ b( |
appraise-give# @4 i: J; c9 \2 J
;;
当前发生交易时给出的评价
9 S4 E  y* x0 Gappraise-receive! J# _; R4 I% R/ P: F% \( N% D: X5 e
;;
当前发生交易时收到的评价
, W0 l! q/ C+ f2 ^8 C/ J; aappraise-time
; U% t; u. _, {! ^& O6 X8 ]7 };;
当前发生交易时的评价时间1 ?+ _0 q, \: N( _: Z4 R: p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 g) }/ ?3 B- ]% V3 Rtrade-times-total% u4 |1 P5 ~! z) a
;;
与当前turtle的交易总次数
; l' f6 A% V9 |6 [3 v7 E- Y( q; `7 Strade-money-total
, \3 p3 B8 D5 g! m;;
与当前turtle的交易总金额
  ?2 t; o5 W% r/ E- L/ |! ]! vlocal-reputation
+ g9 @( d' T# v- z, {' `3 |global-reputation" y4 ~; |/ |; G; Y3 u
credibility
& a% @$ J7 D/ e% f5 D7 `5 O;;
评价可信度,每次交易后都需要更新; i' o: j( h8 N1 N# ^$ [7 `
credibility-all+ e, N. G# Z1 _- B
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据+ [3 J! r  x3 c  l% C* g
  B+ s" ]  t+ S  w" N
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
# L; y( s, v" i1 r+ v: Fcredibility-one
8 q- q$ i3 |( L& v) i;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
  ?* D+ X, I! w, E9 W6 q4 dglobal-proportion
% Q- h$ \+ R5 C# Q: Gcustomer( Q: I0 g3 `2 R2 f& G- K
customer-no1 B. X' a% T% Z' s( L0 u: k' Z3 r
trust-ok1 V* Y5 w5 e, `- C
trade-record-one-len;;trade-record-one的长度
7 T' b/ Y4 Z( S! H; S( s( F]
7 i. a1 ?; @' @& S( R
  P3 _, z+ [1 {& S;;setup procedure
: s& S0 N4 L6 Y& M4 y* @
" _' P( C: m4 i( |% [to setup7 a$ B, }% f# N; O
1 n5 q, S0 H$ S3 l- ~3 G. t
ca

& t& A: `8 B2 W- a/ Z' s5 c* s, J! M4 M7 y9 d9 S6 j) s
initialize-settings
( f' r) b2 v3 L, r/ e
: M: t7 T1 `5 O; H: w. i! n8 c1 f1 ]
crt people [setup-turtles]

8 y( z9 }$ e7 o5 n. W: |* m7 ~5 t+ ~$ D
reset-timer
- D8 O! r  W! R' s" Q

" E! ]2 ]6 k: {poll-class

3 v0 K( c! c  @5 I2 J1 G, P: q% H$ e" ]8 _& P
setup-plots
3 L# N' F8 R3 J$ A, H3 ~9 D

! G5 Z' W2 |( W. ydo-plots
. y! _- O  U! m
end0 D, e5 }6 ^: Q3 G" |! g' B

& _+ T' D  ^$ }2 dto initialize-settings
& _' ]) C5 r) q8 |
5 @! d2 T/ o% @0 Dset global-reputation-list []
+ X- P  u* c  \9 ?3 n
8 c- Y0 G- j# d
set credibility-list n-values people [0.5]

4 y& I4 g7 M& U9 @8 D* y) y, w2 F0 G9 G1 N3 D
set honest-service 0
: L5 x1 ]" H2 t8 C5 p

9 o; S7 ?5 j0 n$ ~& C2 wset unhonest-service 0
8 w& I7 s: [% ~, i9 X" ^

. R) r- W: i" j$ V6 t2 |set oscillation 0

( I% ~4 n' A  a0 k( |" W
0 F3 R7 T0 @: m# Dset rand-dynamic 0
- F' p/ c% C, f" |! c6 c
end+ k$ t' D: o% d/ b) p4 b4 o

( e6 ]5 m1 |$ g" K" n5 Eto setup-turtles
, V) _+ P9 |1 x+ i: [. tset shape "person"6 c2 F& s$ }5 B" B7 z
setxy random-xcor random-ycor
: q: |: U- |% \set trade-record-one []1 M. G( i: W* Y: {$ b8 p

7 D: v5 V6 W" ]8 Uset trade-record-all n-values people [(list (? + 1) 0 0)]
) x- `& E" i% s8 a
8 k2 B* a, D, @/ ?% w
set trade-record-current []' c( u/ ^9 w4 K0 D& n/ ?
set credibility-receive []: X! B, m, y) g+ o6 z- [/ z7 D
set local-reputation 0.58 d" |1 \0 P! h2 a
set neighbor-total 0, z3 [! h6 `& _) W9 m; y
set trade-times-total 0* h. ]9 K4 p: g
set trade-money-total 0
3 u# k2 |0 ~3 u7 W4 Z& w$ hset customer nobody; }4 C" N! ^+ h& |# Q9 a% o+ z
set credibility-all n-values people [creat-credibility]
0 i8 h) ]1 z2 A+ T4 Pset credibility n-values people [-1]5 l7 O2 ^3 k+ H  A+ H0 P
get-color
+ Z! s7 j5 Z. i7 k# p( C1 K' ]* x
- a7 c" D: h' {( C# @$ c6 ^( E( E
end0 d/ U" L3 P2 y& F

$ R  x; A  L& {9 @  ]4 s  F% vto-report creat-credibility5 F! Y! _4 p0 e5 `  F
report n-values people [0.5]
; r9 |1 t( R2 x0 e1 S) Qend
+ |; w& [% D; ?4 p0 n& P4 O8 j( P) U; ?1 Y
to setup-plots8 R3 V- ^/ ~1 T; A
3 x7 [7 O$ l: B) S" @0 \
set xmax 30

5 h* c$ j9 W( a+ s" B! w- ~
7 h) V& `2 h/ e. Z% w# S3 _set ymax 1.0

7 m, S* k  B# O4 v, F  M6 w$ v4 x
clear-all-plots
9 |* N9 F- J. e% s  `
1 o% C' [5 @+ ~/ [3 w- Z" E
setup-plot1
7 o7 r" s# |3 F( e; D
! _& T+ P: d; K  ?5 ^
setup-plot2

1 B/ v+ @  `, X; k  K
) W, B' g# G0 C2 K3 g- X6 gsetup-plot3

  G% l( k% M2 e$ v# t" k* P& hend) |, P! A& m) ?2 Y- e+ z0 T

; @8 j# D5 S, E$ M7 }6 v;;run time procedures# p& |- a9 a9 w  V! Q
+ P5 B6 x8 @- g" C5 c6 T3 q/ o; u
to go
/ y4 L. }- _7 R. W2 v2 v  A4 J; X: f
ask turtles [do-business]

( P4 Y, V/ p1 H# D' G  i4 hend, G# U  F! ~0 o- ]

, J! `3 Q9 Q: [1 T- H. q: ito do-business
7 F5 d3 N7 Q0 J1 e
  f. ]" c  o/ e2 I1 p1 {* a
/ x6 R: z( p7 O9 v. ]( R1 _
rt random 360
6 g6 u& m' c( h' B

9 S+ S# l/ Q2 I& T, N! ]# s$ tfd 1
8 \) o8 Z: o& @$ _* p. U! j& M

6 {' ^$ P: J$ r9 aifelse(other turtles-here != nobody)[
# [0 |- U9 O; e; M9 T
0 s' R9 A, ^) h6 l( O
set customer one-of other turtles-here
; K, y# w8 _8 R* u8 c
+ _4 V$ _& |9 e4 K5 t
;; set [customer] of customer myself

# P- A" V7 i& g4 d1 I
8 m/ O" F' w- @; Cset [trade-record-one] of self item (([who] of customer) - 1)
% s  c+ B( C7 x[trade-record-all]of self
5 J/ h% D$ o6 A7 w3 V: e& j7 r# T3 g+ G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' i/ X6 U9 n  T. a1 y& V. E9 x; _
1 o9 ~: e- w% D7 L: g
set [trade-record-one] of customer item (([who] of self) - 1). C! i. l- I/ \$ c; \
[trade-record-all]of customer
# I& v0 o: s3 R; V# R. Q
* a" Q! E3 I( Y1 ^5 J, y. g
set [trade-record-one-len] of self length [trade-record-one] of self

; a2 Y0 T1 A4 I& l- ]1 U, h+ o  D+ ~0 M; `: j2 C
set trade-record-current( list (timer) (random money-upper-limit))

- d2 J4 p4 Q9 u: n/ G6 c+ v
' _, `8 ^: m! N, z5 t) Bask self [do-trust]! ?1 ?# e4 I2 k: c
;;
先求ij的信任度3 t1 ?% a) W7 b: w! h
% g6 d. r$ y/ ^
if ([trust-ok] of self)  x% Y. K; T' ]% J' _; @* {1 ~
;;
根据ij的信任度来决定是否与j进行交易[4 Z2 \$ V* |' l# F, S8 o# Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  @/ N+ j8 V& A* J- [
+ `# q" P3 [  M/ m[

7 S4 Q' n: F8 C5 W9 X) N1 \3 m
do-trade
  v, S2 B/ W) j/ Q7 B8 I+ i( g# _

4 V& Q( T! u. Bupdate-credibility-ijl
- e& K+ @% M2 |9 J; \1 @; n
: s/ i8 d: P4 f2 {7 [& s+ D2 N
update-credibility-list# T6 u1 Q/ I9 `; b. s

4 R! t4 _. r+ L0 y. {0 _4 y0 N
+ f! J6 g! o  _$ o% u. q4 cupdate-global-reputation-list

( j5 j* K$ F3 l8 \/ H$ u9 U
, Y' E' u) @% f" z1 q/ G- ~" dpoll-class
0 F- V) c) `4 Z8 W9 [3 M9 m* y. X
+ r- K( R- L3 V1 a
get-color

7 F4 _+ \6 p. P4 `. O9 q$ {, G4 p: H8 o5 C
]]
- H( o  E% F# @8 H8 N
; C2 h2 G, H' T- [3 C" A  u3 N;;
如果所得的信任度满足条件,则进行交易
+ h, }* V% \* A/ C2 a  Y
$ G6 E. W/ E* g2 `8 ?* y- A[

" {) D6 j/ I. E
) T8 R6 P" q1 ?: n( [0 p3 [rt random 360
0 @/ h% t0 |0 P
) @1 X2 O/ M% ~0 A6 n
fd 1
* T0 F' a- A6 f

0 R) i' X2 i+ e$ N9 r]

' x9 z/ A9 p# U* M, |( N3 j. y: Q) ^2 c
end
) e0 J6 u! V$ w/ @, f( Z0 W0 a/ h- t

6 ]: T+ }$ w- Q9 _, A) z' ^3 b  Qto do-trust
4 S; Z0 k: C: f1 s# L: O* _set trust-ok False& R8 v( j2 W2 ?8 K) ]8 t
6 J" e. ^+ y7 ^' e
5 }3 _+ Q1 g$ e/ Y' p9 d' I1 g/ Y* |
let max-trade-times 0
1 p' Q7 q* A8 q' @6 M, a" Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ p0 `; L7 L  v+ j+ D6 t1 rlet max-trade-money 0
' q- Z! C& w3 w: Y6 E( v' G& ?5 g, kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], M) o' q' Q7 v' }1 Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" n7 |( M" h+ U3 k( W9 G8 X5 c2 s. K7 _% U1 y+ L
6 z* S# a, ]! v& q4 {) s
get-global-proportion
% h0 n& a2 v  @5 w2 T$ V, r; Alet trust-value
: F* k; j3 d# X1 alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ m! x! h8 i" f/ @2 d4 l( ]
if(trust-value > trade-trust-value)
: q6 K8 i" I' @1 o( c- N, S% k[set trust-ok true]
+ ]/ G7 }$ A/ L& q0 V9 }" Bend
6 Z" K: j8 y. g- V4 M, T9 t
9 }# X& o  Q& w& V, W& r* Fto get-global-proportion
3 @2 e/ h9 I7 Y# V3 Zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 |: m8 D  {" `1 v+ r& B[set global-proportion 0]* T0 E6 \$ ?5 I! c3 M0 q8 k5 {
[let i 0& G/ [. I7 q6 ^: f; u7 H
let sum-money 0
7 o8 _, d9 Z/ Y/ Cwhile[ i < people]
) h& f) J  I- }% }  m[' h" `$ f+ L, E" _) r/ J; i
if( length (item i/ x1 t" V3 ]! H! K/ X# i; y
[trade-record-all] of customer) > 3 )

- B; E, I& E5 X4 A5 g# r7 {[; ]- G! ^0 U0 w: c3 |7 y5 A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 l3 x1 P3 Z+ ]3 z  Y% F4 `: d2 |]) E( s! z. u) O& t* x' R' _* o9 i
]
- M/ v8 [: \) i% C% j0 n/ flet j 05 e# h$ ?/ G/ @5 _- h- J
let note 00 e: U" D* ?( z
while[ j < people]
% Z0 e2 ~; Y- Z[
2 o! `$ h7 n0 y% S5 \$ [if( length (item i0 c) _- y# S  G
[trade-record-all] of customer) > 3 )

4 c5 `- z2 v5 U" D! Y- c- L9 e[
# J8 {8 V- s/ d5 c" Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  Q& ]6 b8 @. O$ W! K' S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ {5 {5 x: b/ q  X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& j7 ?" D( D4 z2 I]/ m% I  Q6 i/ g/ `" I3 I
]
6 p& e( ]# Y( z2 pset global-proportion note
9 a) s, [" R" K( _4 {2 n]
/ @2 M0 w* @5 H5 [% ?. `8 Rend
, j3 a) x/ m7 K% \+ W$ C! p
& b: g6 c! D1 R8 u# n9 x* _to do-trade* T8 Q7 J: I  k+ A
;;
这个过程实际上是给双方作出评价的过程
9 k: }5 |' a3 N' w9 ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, T0 U) V7 u- c4 x( [4 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 Q8 E! L% N! y! zset trade-record-current lput(timer) trade-record-current" e; h& s: K9 V8 j; F0 X8 u! _. v
;;
评价时间: u* {7 ^- |% s% ?" m- g* O+ B7 L4 U
ask myself [
6 c- U2 G9 p3 f  `6 _! D0 bupdate-local-reputation
5 X/ n. S3 X  h6 P& }set trade-record-current lput([local-reputation] of myself) trade-record-current
& v4 v5 Q# D! V8 I]! _; i0 K3 s. H0 \& s) Z. u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- ^% b; u8 _% j, C
;;
将此次交易的记录加入到trade-record-one
3 \7 c# T4 }* L! g, \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 H' b' j8 H' ^0 m  xlet note (item 2 trade-record-current )
; j+ P' x/ ?% i. \7 pset trade-record-current4 s  T* n' O# y6 `4 y% O
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 ^. O$ p4 H6 |
set trade-record-current
& [$ ^* k0 j& k6 ~6 J(replace-item 3 trade-record-current note)
3 t1 Q( h( U, c. y6 h( S/ q9 c7 d' S! F9 ~

) {# ]+ G: q9 Yask customer [  n' P8 G& q- Y3 u! K! n
update-local-reputation, F. {3 ]' X# g2 ~
set trade-record-current. V* v7 i- U( c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! R/ d( c: w9 f$ w) q, ?
]
# R, q, k& T: z& `6 s
# `1 s9 ~8 E, e" A
8 Z9 i& n( }/ P& \! ~+ j4 i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 s0 D& q6 f# x6 u3 \/ q! H: I

8 s3 |5 Z4 m  _& w0 gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 u3 V, D, z) S4 n$ s
;;
将此次交易的记录加入到customertrade-record-all# @5 v* Y0 d# |; ?3 c
end
7 F! e! F( N0 E! J% F- B5 N2 R& `7 R3 P- S* x, S) z: b
to update-local-reputation3 F0 e! j" J9 E1 j
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ T3 [! p0 \; t3 m8 r3 ~% u& u7 K: _- j6 z5 V" p& z5 \

, u% W) Z) _' ?) s" y;;if [trade-record-one-len] of myself > 3

( L  \5 }- @6 ?2 s4 L7 g$ pupdate-neighbor-total/ }  Z4 w6 f) |( Y! K
;;
更新邻居节点的数目,在此进行% r9 W  s- m% H% {# T7 N
let i 3; h7 [' d) A) }8 l6 I  A9 y
let sum-time 0
% O; U) i  v4 [& J3 e) mwhile[i < [trade-record-one-len] of myself]
+ C0 m% w# r- @+ E/ X[$ ]% z1 T' U/ P% b  F5 ]6 y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 f( ^1 H+ p3 p4 Z# J) b) G7 Eset i
9 `/ s6 P; I5 p( i + 1)

2 y$ S4 j' g/ H% S]
5 B6 F" u9 R/ g2 {8 N% n* xlet j 3
4 z9 [/ ]- P9 I% q% u4 n( ~* ?$ Vlet sum-money 0
. K9 m& l+ E5 _5 Gwhile[j < [trade-record-one-len] of myself]+ q/ @$ B' j) s7 y
[0 ^/ Y# J! s8 P) w2 t: u! w- N- ^8 g0 C
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)4 W2 [3 i. @9 |5 q6 ~: d
set j
% y! e$ ^# x5 M* `; D) }( j + 1)
: o7 [2 f, u) f* o# m* h
], {3 o! D+ S9 b. Y; d
let k 3# o& r& z- @& b5 {
let power 0
- U- x$ O5 I& `let local 0
/ ?+ o7 Z) O  l& s% [while [k <[trade-record-one-len] of myself]) A, o0 r6 D% z1 j* }0 Z- Z
[7 M* `9 s) f% W& v; w; x7 ^. [! m
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
$ C# t6 D/ d# q" E* w* h- `4 w6 Nset k (k + 1)9 @8 q& x  j9 \1 Q. p
]
6 [0 X. E$ V! Q6 a* @  n# T1 O& uset [local-reputation] of myself (local)
$ i1 V( {. e$ b+ o6 f% D6 cend
: p7 o$ X: W6 I1 N7 D7 p; y$ T1 v; d, t
to update-neighbor-total
) s# E2 x, K5 Z- i* E
6 _3 p+ a; f# sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 V% C( l$ y% Y- F
; K4 d( y8 |* G) F
& N7 D. I: O2 a- y/ e
end# P! g( g: t6 \
( [  [) }  g# m9 n8 ~: e8 s9 `6 j  S0 d1 H
to update-credibility-ijl 8 m; b6 O8 z, c+ H7 R+ G" Y

; X; Q4 t+ j5 F, e* X;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
( z# ^$ q( |+ t7 z9 [- {1 alet l 0
# z- q" O' [$ K" ^" awhile[ l < people ]: C. ^5 Y' G% G- f# e
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价. p1 e& j/ p9 a2 F+ |) K
[/ p7 o& l& Z9 V( E  G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ o" ~8 R+ @9 r+ }
if (trade-record-one-j-l-len > 3)+ {' B# X! b7 M4 @( y8 J& [
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
- C8 x/ S+ o1 @- N$ s7 D! xlet i 33 U/ U  h* K# J5 Y
let sum-time 09 G, Y; y8 ~/ F4 M2 [+ ?
while[i < trade-record-one-len]# I0 u$ @& W/ p% O
[5 M  n' A- p. K5 P6 _6 K; ~6 T# e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: s# {* X9 u( d% s) tset i6 Z# [; [4 {$ S$ _! ~9 t
( i + 1)
: ]) ]$ W- l- q7 D: g5 T
]
/ a9 {* i3 a9 d3 m- Z8 ]3 ~& K4 }let credibility-i-j-l 0& U7 Z8 H  S0 I' Y6 c
;;i
评价(jjl的评价)2 v  ~6 G. K' C# ]! ]; b
let j 3# }7 \1 u6 b& i! d
let k 4: u( j5 i" N3 [4 C7 j. T6 u/ P
while[j < trade-record-one-len]
! C) }+ c( _6 Z, Z[
0 D( i6 ^. `1 D" awhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉8 H/ A8 ]8 H  a
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)( C/ @* N! F' ^% g8 |& Q
set j
+ j: S1 S7 D0 L1 v7 o( j + 1)

' K5 }% ~7 Z" b' @" ]: |& ~]
+ l: `2 O6 j' {5 t! {set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
( Q8 A  L$ a3 Q$ [4 X
$ I, [8 {: K. C+ }6 [

  G8 A/ s7 m' X. A. H7 Y3 Klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- C/ S7 i0 m' @0 C1 F
;;
及时更新il的评价质量的评价5 ?+ L5 T7 p* m5 u3 M7 @" l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& F; v3 G& E& z' [2 eset l (l + 1)
' f9 u/ @  u. I6 Z+ P]
8 I* G: w. D* e( j* g! R: S; ^/ y3 Eend
) U. o! W4 P. M$ ~0 Z# F1 a
6 O. `5 o# B& P: r: v. Gto update-credibility-list2 J( z" s" ~2 ]' q7 V0 T" F+ M5 c# t0 y
let i 0
/ w- v! P1 J8 D2 T5 \  C# X& v9 W4 X  ewhile[i < people]8 d  ]' ]1 y; `- c1 z
[
- I( c  B' F" i# U* ?. n/ W$ F) dlet j 0
2 a$ Z( }  {% ?; H+ s) f- tlet note 0
- x% q& {9 R1 ^let k 0
0 `' z2 i" w( S+ |. r3 H8 m;;
计作出过评价的邻居节点的数目
2 M! g: i. o. \, Nwhile[j < people]$ g  y" w0 c( U; Q1 i0 s; ~
[
& p" [3 g& i# N: R5 ]2 `if (item j( [credibility] of turtle (i + 1)) != -1); S5 v+ r# b. X7 [7 m6 D. m* h
;;
判断是否给本turtle的评价质量做出过评价的节点0 V! z, E# _$ m9 }6 h) V
[set note (note + item j ([credibility]of turtle (i + 1)))
/ v% @/ h( W' @3 O: X  L8 ^;;*(exp (-(people - 2)))/(people - 2))]
. o" S$ _% B2 p+ s0 Q8 F
set k (k + 1)3 }% k: H. v+ g& _
]
. s+ F+ j2 }# }: H1 ~+ P# D- |set j (j + 1)
& I- ], l; e+ G) H! K* @3 M]
9 @8 \; w) B% x3 o6 s3 g8 y% `+ Aset note (note *(exp (- (1 / k)))/ k)
( n. `4 }/ i) g4 T/ Pset credibility-list (replace-item i credibility-list note)
, d. }5 k) n9 ^) ]0 e7 j8 h2 Lset i (i + 1)" |' T' b9 }* {4 h  J
]
" c* V# \7 l: ~+ ^6 z3 Uend1 Q7 T  P' G4 C% U: {

/ y6 @" |; G4 {& s6 A- G* A0 i$ jto update-global-reputation-list+ S$ @" o% }7 N0 \& d6 ~, t
let j 0- f, Y) J6 g; x3 C2 D
while[j < people]
8 V2 h4 i  }- r# g6 ^3 U[
8 {' G% Q# Q- q6 j$ z+ M* }let new 0$ ]6 W( H% l3 V9 U+ d
;;
暂存新的一个全局声誉
, n, V& P2 I  K8 k; Q( d* V+ @let i 0
$ ^2 ^  r3 a' l( a$ C2 vlet sum-money 07 f: U# k/ v" Z: S8 j
let credibility-money 09 @: [, N4 t  D  n
while [i < people]
9 I$ o# H7 e& b8 T[. |8 A* c" ?8 f/ j8 {0 v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), E7 b6 j: ^& @+ T3 Z& b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" \% ]( _# [7 \set i (i + 1)3 E6 t4 |" l+ m2 h- P7 p5 n
]8 b/ j* A/ g& G! @
let k 0, @  `+ Y! ?% L
let new1 0% y) E. \4 z- y; z
while [k < people]* j8 p% ?! ]% i
[
4 W( A. X6 M: v5 b. f7 ^! Bset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
" T/ p  |8 j) }3 Y% d# zset k (k + 1)
4 I* ~4 X" F- R7 |0 ^, @; x]
( r% E: ^2 k/ rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 ]/ v- }0 T1 X$ c/ tset global-reputation-list (replace-item j global-reputation-list new)2 b  B! M# A9 [6 @% G
set j (j + 1)
+ }# u4 c- p2 l- K2 ~% F  u' x& L]
' q) m* Z" C5 o& g# Y; D9 uend
* r$ C- y6 Q- @$ M' Q4 B/ h1 F3 X9 ~$ m

9 j# Z4 p  P  C; q- N; g2 }+ t/ H. q1 p4 E% P( X% `
to get-color+ A! E  ?" o( J; F1 b- B+ ~
+ O9 X; u" C$ n5 E
set color blue

! |, s5 n) t( e5 }; t9 `end
) M( h- m; s; D9 \9 k$ h0 @9 x7 B/ @# }0 z$ v- X; R9 g6 D
to poll-class
& N3 o1 g4 A$ r6 M5 G" X. Eend8 o. Z8 G2 {9 d' ^0 }+ P
, g. l; d% i4 s& A; r- z
to setup-plot1+ b# Z7 o' I3 O! `

' S7 ^: {+ s3 t; z4 Jset-current-plot "Trends-of-Local-reputation"

# g. d& |! l& k( m7 k1 }$ r- u; N* g% b! P3 K. v1 @' x
set-plot-x-range 0 xmax

$ Q, U; f* f/ r5 l6 F$ a+ A! H+ U1 j$ `+ h! J' R: |2 d
set-plot-y-range 0.0 ymax
8 ?, ~. _, [8 K7 q% [7 @. ]
end0 O1 a, F9 G( u3 U0 r

3 I! ~) o& J: t4 M8 U1 S6 `4 D4 Qto setup-plot2
* K; ^3 H  _3 c5 P% C% }, |$ g+ c1 P/ C6 Q7 i  Z2 k
set-current-plot "Trends-of-global-reputation"
8 X# _5 q8 p5 e) t# ~/ |' j3 h
$ A) T/ L$ R6 I* p- m6 J# p: S
set-plot-x-range 0 xmax
1 B+ @4 U8 H; }8 c/ w, R, s
/ ~* x' k  H5 v' X* V  P8 R0 a
set-plot-y-range 0.0 ymax

$ C4 \' I- \/ ?" M9 C8 Q, x% zend
1 I  I. l8 F! c" x% M- R2 L$ D$ x+ b0 h& ~  z& H" \
to setup-plot3' `5 C) A! ~4 a) T

# C: L: x. u, N9 x; P" l* Pset-current-plot "Trends-of-credibility"

8 F' w. l9 H% A; @" \4 T$ W' s& u1 F* q
set-plot-x-range 0 xmax

) R7 s' \2 T+ e& w
# V* }4 o! V. `0 gset-plot-y-range 0.0 ymax

9 K, A1 g' p9 @2 ^9 zend
6 K, [& r' ^# }8 ~! p  K% _2 U; {7 c7 \$ u8 o
to do-plots
5 A6 o. H: x5 R1 K3 L* z$ Tset-current-plot "Trends-of-Local-reputation", R3 K5 I. P0 q2 ]/ X. Q7 M
set-current-plot-pen "Honest service"$ G/ C+ J8 q) X; L! }- s
end
4 }2 D% N  U6 p
) z5 `! Y) J( M2 f$ z% Z$ ?[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
% y7 M# T1 |6 p8 k! r$ m0 v* d* Z% K# [# {/ [7 ?
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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