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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:- `  d9 O# D* y4 R2 u4 \) i
to do-business , r& J9 Y/ b6 o* y. n
rt random 360
8 r& U* U3 ^$ t fd 1
# ^5 t9 o$ B- F2 f ifelse(other turtles-here != nobody)[
  e6 w5 ^! H+ Z( j1 [' l   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.
. I$ Q$ S" a6 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 S8 n- I& i4 P* I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; \8 e8 m& W7 \7 J   set [trade-record-one-len] of self length [trade-record-one] of self
) K1 @1 l& X1 g4 H% e   set trade-record-current( list (timer) (random money-upper-limit))
9 ]2 G' Q9 I" Z# r$ A0 T( u5 o! E/ v: X
' l9 \$ r! j$ }+ i; Q* D问题的提示如下:
7 B% P, R4 H6 k; ^) H1 Z0 r- j4 W; A! ^  l5 k) H0 p# i
error while turtle 50 running OF in procedure DO-BUSINESS
3 x9 p5 H$ N2 ~5 F/ f  called by procedure GO# e9 Y" l' ?" l! k! N. n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  z6 U9 C( ~  L- {
(halted running of go)
6 w6 q' B5 U6 s) Y9 m8 n) S) b2 M/ s
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~~% c" i0 K1 s/ E% ?' b8 \
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
( s, [+ ?, ^# m* M+ R1 Lglobals[- x. {! P) o; j' f
xmax
4 ?4 `: S. ~0 Xymax. x) q3 F! \9 X2 ]) C) F7 t
global-reputation-list6 Z) X% B3 t, X0 H7 f
3 h, v% G$ u  L) K2 v
;;
每一个turtle的全局声誉都存在此LIST1 _& _# w) N3 ]$ ?; K4 q
credibility-list* j: L. s3 ^: b' p: @
;;
每一个turtle的评价可信度
: F; l$ H7 T6 p5 F% _* Q6 G2 Yhonest-service
- \$ e7 J9 W2 r) L" ?! w& M" p3 Uunhonest-service
0 I5 l8 X% I( o% q; j5 woscillation
6 U7 T2 G* C0 p  Xrand-dynamic, f) s* d- B! f, S/ w" Y. K) m
]
  x+ U. d7 [  r- D9 b
; k+ E/ o9 A' [  e0 F5 \6 ?turtles-own[
, A' M$ s' Q8 U0 n7 O0 C, v& ctrade-record-all
' Y' V1 J/ A, M" C9 g0 V;;a list of lists,
trade-record-one组成
" L/ ^) d) l0 O' Rtrade-record-one$ K1 i3 l+ ^# }3 {" J& i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ I, K, m3 Y5 l4 X& M( ^. V" L0 B8 ~- [9 o: y" c. h) {
;;[
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]]( B6 T. i, X5 l' O% `
trade-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]
' e, O: e/ k( E1 i" i: s9 z9 jcredibility-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
+ X3 f  k. y# h, pneighbor-total0 h2 R  Q: o4 T
;;
记录该turtle的邻居节点的数目. m' M8 h/ p, r# }) z. g+ c, ?8 X3 x
trade-time0 Y5 ]! k- U  y: @9 C- I
;;
当前发生交易的turtle的交易时间# [: x. @. s3 S& x" r
appraise-give
# y  N' Z+ L; T: p, X' m;;
当前发生交易时给出的评价% A9 g2 z3 [. ^1 P! [% t
appraise-receive
& C3 {/ m. _6 G0 A+ K+ q( m$ T;;
当前发生交易时收到的评价0 w0 V2 N4 g* u* I: T% @5 d. l4 h
appraise-time3 q# T$ E) o9 h
;;
当前发生交易时的评价时间% S6 X, Q/ F$ }) ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* v% g. `" _: Itrade-times-total
7 j$ ?4 A" p% Z  N# A+ v+ \. F;;
与当前turtle的交易总次数
; C3 [$ d! y& S0 ^/ xtrade-money-total
0 }1 u3 n2 g% U% `;;
与当前turtle的交易总金额2 w9 F3 X3 k. a! b( ~
local-reputation
0 h( p% R. _- [1 i4 S0 Q$ R# h8 v5 gglobal-reputation
) B4 D9 o) A3 q7 G7 ~7 mcredibility( D3 C$ F, \" W
;;
评价可信度,每次交易后都需要更新4 ~5 S6 O7 Y' N$ R$ @
credibility-all
% p& u, O/ }- S2 k;;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" S* {! H/ o5 L. S* k, Z! V

5 |* V) b6 h; B  k* o;;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
" ~6 b1 V) F" w7 i+ I' X% y. o+ wcredibility-one
2 \9 {5 q) n) k;;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# ^% _5 U* a) Z
global-proportion
; ~* U  t2 q! [. q5 `+ Gcustomer
5 u) S9 ]3 v5 i- x# V+ U6 {$ Jcustomer-no
/ E/ h; j, R  F2 |7 ^9 Y" ztrust-ok
0 ~1 g$ `7 H+ O0 j$ ytrade-record-one-len;;trade-record-one的长度
4 N. ]6 |- }( _5 X+ T]* \- B2 `8 }" V. A
- P' A' r) t5 K8 S0 s; p) h! P
;;setup procedure, C3 h) v( b7 D

& |# t- F2 J3 g) x: Dto setup; j! `7 |% P' j5 U! b6 F

$ R7 D9 B7 F( M$ Gca

+ Q" o( _2 W/ T6 y  v# ^- q* I6 p
6 G8 u+ L* N: a/ Binitialize-settings
* E: q$ ?& E; d8 j6 D
/ l: R* }4 {3 p. P6 ]0 i
crt people [setup-turtles]
& G7 m% d, s6 E* Y; r5 K7 w; q

  \! Q  t  @/ \6 {2 G! qreset-timer
1 V0 R7 }1 L" Z! ~2 m
: ~$ Z" S9 C/ G% R. U
poll-class

. h* d7 K5 D- Q& u: ^% F1 d2 u, X# y; k
setup-plots
/ U0 b  h+ x$ T
6 R: Z7 _5 h3 c
do-plots

, e% e  D1 g7 @% _* U% ?/ Send' {( s, G2 W- w, C: w$ |6 \+ h- w
+ g/ `/ m1 i& i6 G
to initialize-settings4 `; K- s- P4 ]) \* C

. X% U! A1 Q* d; j( fset global-reputation-list []
# W' \" [0 P6 T9 |0 ]1 {' o
$ s: [0 J% x9 y% I- u
set credibility-list n-values people [0.5]
, i4 g( t' ~5 d4 M; f
' U' T9 j) Z5 O" f3 Y5 h8 d
set honest-service 0

+ O3 v" P) _1 W  {* J, C
! q, N/ t  H% Y7 \: s- Yset unhonest-service 0

: H. J) [9 o, a: z. S# U
2 o! _. U! t8 a7 ]/ b( {set oscillation 0

5 Q" ~) U: g5 ~$ d, f% F9 O2 n$ U2 b" Q9 Q6 M0 p. {" a
set rand-dynamic 0

2 U6 O3 D' r2 gend
3 i8 ^7 W7 G2 r. a3 X: }5 Z2 |; I! z- Y
to setup-turtles
1 u5 ~8 G( P# L7 ?8 ?) ~set shape "person"8 |3 y5 F- O2 L1 q  ]( n2 W
setxy random-xcor random-ycor  Y8 f7 N* h# C% e8 h! M( `
set trade-record-one []
4 k) t+ ^' |: |# R

; a3 D9 G( D; {' y% @+ I1 }set trade-record-all n-values people [(list (? + 1) 0 0)]
6 j. @5 m2 o8 o4 H: `1 \

7 p1 L/ H! W! d  _, _  l, Uset trade-record-current []
, _6 W7 Y0 h3 |0 aset credibility-receive []: }! I& E- @) ?, N5 `" `
set local-reputation 0.5( B& r, r/ `9 e- {2 i/ ^3 D
set neighbor-total 0, ^+ z0 R" o/ o0 x/ |
set trade-times-total 06 j4 R* f8 d  O
set trade-money-total 0% x1 G# t4 R$ ^- Z$ ~7 J& u3 E
set customer nobody+ Y1 @  q7 ?" v/ {* G
set credibility-all n-values people [creat-credibility]9 v5 {! B7 ~! m* a% P% S! }& A
set credibility n-values people [-1]; x# S4 q: I1 a' C7 C# R6 L, F
get-color
6 X1 T9 z2 E4 @2 l& L
9 S6 S6 w5 ]2 b9 Y
end# _5 D/ z; \, f$ y
5 Z7 Y* p5 _+ a
to-report creat-credibility, P; Q+ Y6 U4 m- S" X% Y) q2 n
report n-values people [0.5]" C. r! T6 @$ q8 M0 S
end% O) a4 m' m1 s- C
  H) e2 o8 t' ^0 J3 i
to setup-plots$ r  ?; i0 B0 [/ U* r# `
  p% N& J* P' Z) S: p6 B! C/ ?
set xmax 30
4 p3 E0 i; y# C+ i% o

9 u2 `: n% i# D3 v* L  J' w' |set ymax 1.0

9 O* C" E* x3 p8 t; b) F0 S, t
9 e0 [$ v  t& B! ~, I2 K' L: L3 I, bclear-all-plots

' I5 |* f( \1 C: v6 {
, g7 @: m5 q( l0 k1 E( z( l; usetup-plot1

/ ]$ F8 u4 W) e9 V  _  {& j/ j+ h: ^8 J4 f6 ?2 u
setup-plot2

& ^9 P2 y# {$ {" \. e
" e# W. l) w3 I$ @% qsetup-plot3

, G4 V6 E4 v' |! [( d* W# gend
* z; M" p- D6 x7 q
4 g$ i: {" J. P/ Q& Q  _;;run time procedures; H  ]8 k7 q6 o; W8 k% P

' }0 r1 M. R3 }/ Kto go' f5 R% t) L+ M& D! }) [
4 r6 O$ j; G. c+ a/ P
ask turtles [do-business]

- V/ y% K4 b  k# {& Dend
" R) G! v, p2 w, [1 c' f: F: _' }, ?) t
to do-business   Q7 W& e& M5 B, z8 x

- D! d8 }& i* V9 P8 ~! s2 {+ p" S0 [" |! [
rt random 360

9 ?: g8 F; f. ?$ }0 q0 _- U! t8 g+ q0 m2 A$ Q2 @* W
fd 1

$ C! m0 n4 ?$ T4 n; _2 ]3 [# \  }* a" Q& l' g7 i$ e! }
ifelse(other turtles-here != nobody)[
; p/ s9 T0 \( i  t5 ~% i

6 o3 g  n& f! X6 x6 eset customer one-of other turtles-here

& D9 R* L$ B8 Q" p3 `; W/ a7 y1 R5 _! l0 n# G5 ]/ K
;; set [customer] of customer myself

# i4 K3 u7 }) O- S
9 ]- V2 D3 W7 L( |* N0 Bset [trade-record-one] of self item (([who] of customer) - 1)
, B/ k0 Z$ P! z[trade-record-all]of self
8 X5 o  b( l* f% e5 U1 ~7 G. a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 E! U0 n' @8 l: W& a
0 @! _3 n: G  G- R* uset [trade-record-one] of customer item (([who] of self) - 1)
2 s% \* Y7 ], K2 H6 i; ^1 N1 @3 K[trade-record-all]of customer

0 \+ L; P3 W) d+ n3 N4 d3 L) L' v
set [trade-record-one-len] of self length [trade-record-one] of self
5 L% t4 {3 @" v& @8 a
: F2 }8 k& W3 _% w
set trade-record-current( list (timer) (random money-upper-limit))
& \0 d0 x: \2 d  |

; O% @" ]" Z: _. a* @) @+ }ask self [do-trust]
1 C; `/ v$ ^% u% h4 \7 w$ y;;
先求ij的信任度
9 [9 j6 \" E. [3 \: O
7 T# o) X* o  X5 S& dif ([trust-ok] of self)
" Q7 o( G4 \' R, `* `;;
根据ij的信任度来决定是否与j进行交易[
: h2 c5 M8 I8 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- V  T' U; ^8 L7 C) o% Z
  l# f2 Z$ j+ D- ]1 T! d[

4 [3 L' z7 ~* J- i# ^4 G9 k% h0 [) t$ E
do-trade

, v& q1 P* m# m  l' Q
8 L0 N2 Y  {0 c$ ?update-credibility-ijl
7 p4 {5 g) T1 A* T; x& X3 ^
' u( h, M/ i, o6 k
update-credibility-list6 a7 h, g! a" `& _- T9 g0 J

0 W" \2 D. Z# P8 [2 b
* f9 Z# U8 d/ ~$ D6 Supdate-global-reputation-list

$ s; t$ q# a: m, j- N0 [' I$ S
. z) d+ m) R6 zpoll-class
$ ?) _5 B) V7 D2 x
) }& U1 [) i7 {# x& ]& O
get-color
* f' J3 n4 E0 F: f7 q  O
0 X0 y  f( c( g( T" s6 V
]]
! r/ d7 M7 [* m! s7 Z: F) X# v" d
;;
如果所得的信任度满足条件,则进行交易
  a% @- V# A0 F# _7 T* _/ [/ _- {% d* Y7 `( |( c
[
9 P+ k- K; u: n4 K; o* m$ c
, a2 G! H1 M8 U9 c# J; f
rt random 360
3 d. B5 s: b) S
+ ]) s) |# Q5 _+ F8 Y
fd 1

6 R; F: t( E* k- t+ @7 f
' p4 Y/ f/ l; ~4 I/ A" I# j]
0 R, u+ q/ |% a, e
% f8 J9 ?( n* @
end
+ ^, m/ K3 N! m# F- B6 J: Q+ w" b
4 I+ p: c( C5 h4 F6 a' e
to do-trust
6 q7 T/ {$ j2 T' N4 J: V+ b; Jset trust-ok False# X2 p# k3 V5 l2 j

3 j4 ~# M4 W9 D

; b3 E. \' Z- ~& k4 ~8 Xlet max-trade-times 0
) Z9 @' |7 o+ \7 c# j) Q( uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 v. G+ B* }# S6 D: V* K" \0 j4 wlet max-trade-money 0
( E# D& j: p* S( z3 ~5 @! U  xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& ~5 J1 f; R/ K* g9 Qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 o/ Y* f$ Y8 z5 d9 S: F8 ~
6 l7 y( k. B$ ~6 L2 D  d9 _; H
/ D& z0 k; ^& D, h: ]* L+ x, H2 \1 L
get-global-proportion; t8 Q+ {/ t7 ^
let trust-value
! c" V1 ?3 ?8 ^local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

* U9 o7 P/ R7 X% p5 C5 @( hif(trust-value > trade-trust-value)
* Z+ g" Q# r# q[set trust-ok true]8 z9 _' I4 k3 H2 R
end
3 T- r) B& q7 {
6 C) d9 e0 R. d. m8 _9 O' D. pto get-global-proportion- w1 ?/ M1 j2 Z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( O' \# r' L+ c[set global-proportion 0]
. A  t' k( q1 S' O: y: p/ H[let i 0
6 Z/ ]" m7 r: T! f6 o# A, @let sum-money 0
  M9 D: u+ A! B+ s2 O4 J. _while[ i < people], p" k# J0 S* o. K* _2 S. _: O* ?
[' b! g! [: @& g' V: A) J3 h
if( length (item i$ G" O5 L4 c/ S
[trade-record-all] of customer) > 3 )

) Z8 ^% p' f% X. {1 W[9 f3 ^$ N. G1 f- h$ y8 H1 n" U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( z+ u% n0 l9 W: {) r  L- u
]
- m% {9 {$ |% C7 ~" x) F$ J]7 b( Q* k* q  A
let j 0
/ Z: [$ o" Q. p0 L, _+ \/ Vlet note 0  w8 N+ ^3 p0 m4 W
while[ j < people]
+ l9 v2 p$ W2 [9 J7 R' _3 D[7 c7 U; o) s  _( O3 l
if( length (item i9 q1 b# _( d0 z+ I& G
[trade-record-all] of customer) > 3 )

0 v3 w% s$ B) u7 y6 b' ^4 ^[
( @) M0 M$ O- e! O" Z! ~& F8 d7 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 ^6 P2 d2 ]% r& q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% `3 K1 o" j, e) r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' W& n' [9 D# `. |& W1 X]
6 T# z8 F0 Q; U/ X) l( d/ Y]
# w$ d$ o% s  ~* Uset global-proportion note. X# w; I% a6 V# A4 h' q
]. l/ }/ W8 s2 {& W# T
end
2 M. p; `. v) r
0 _9 [7 ]/ f) o+ g+ {7 n/ d6 dto do-trade. |6 K# B5 c3 R0 r
;;
这个过程实际上是给双方作出评价的过程6 Y( J. W# Q& Z, Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ [- Q" G. M6 Q: K! X4 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; Y  i: D" S- M, k1 {. I+ V3 Uset trade-record-current lput(timer) trade-record-current1 m3 e" ^, q5 M+ d& V7 ]! }
;;
评价时间
, |1 {) X/ H* B5 h8 rask myself [
; c* O4 z2 X' V& zupdate-local-reputation! H+ F3 f  l8 P- A! k! ]! N
set trade-record-current lput([local-reputation] of myself) trade-record-current
; B% x" {, ~! O$ B% {* t]
" S2 r3 x2 M" h: {) lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( h: L$ w+ |. z/ |;;
将此次交易的记录加入到trade-record-one
! p9 A" p; ]+ K2 P" _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 K# W4 Z2 F& B" xlet note (item 2 trade-record-current )$ y) L  E# I2 Y! v
set trade-record-current
. Q. n9 o, c4 `) O! ]9 Y(replace-item 2 trade-record-current (item 3 trade-record-current))

9 @) t7 S' x6 b/ V6 _set trade-record-current
2 ~2 @3 n8 w1 L( m9 A5 e(replace-item 3 trade-record-current note)* P0 w/ h5 P$ Z$ \+ M% _- G" X

# u# b+ |" p* a5 u2 S) V) H
5 j( B/ [- R9 Q3 v
ask customer [- V1 o2 D, d8 _0 E
update-local-reputation3 z5 G; v' |0 L+ S7 {
set trade-record-current
! C; H& g0 a( t& O# c/ }' g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) x. F, T0 Q; b: \- g]1 u# `* V* D' u8 I  y

2 }+ Z/ K; r) N

9 m5 E) k$ y7 T! u; |& V9 g% |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 C' @- m* ~" |6 U0 y- f
! Y; M$ _7 w! R; R- i8 c+ W5 E
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. K& ?2 [! U- A# Z, M% U;;
将此次交易的记录加入到customertrade-record-all( Z7 q0 z5 {' o# F" w
end
- P  M/ t$ {- v* H4 Q4 V- z0 w  Y5 ^( X  M9 e
to update-local-reputation' _2 f  E$ |1 ]0 t( u
set [trade-record-one-len] of myself length [trade-record-one] of myself- Y# H8 i' }! X* k5 q2 V

9 T4 |$ d; K/ i( W" f9 c* v  P6 ^+ ?
;;if [trade-record-one-len] of myself > 3
( N# K, v7 }2 T2 e) C5 c9 b7 N
update-neighbor-total
5 m8 c& |% {7 K0 ?" ^;;
更新邻居节点的数目,在此进行
- J+ ?/ Y7 H1 {# ~: t9 Ylet i 3
: ?- C" _9 h% C, [+ N" xlet sum-time 05 A  g. X" R) _5 _0 z
while[i < [trade-record-one-len] of myself]; `- I. M; ~' }, |6 I
[
# e$ b$ b/ Y/ A- [6 u$ `9 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 S& I) q8 F! ~$ }! g* X6 \& y
set i
+ Y3 X7 w- g8 j; i1 s( i + 1)

6 h, o' l* i, j]
5 X7 i3 b- N, O/ |let j 3
2 L4 R  d6 H$ V$ Olet sum-money 00 |1 e' P+ O3 z/ C/ I
while[j < [trade-record-one-len] of myself]
5 ]( w* H. V/ ~+ C# f8 ?) w[
) p' |7 a# n4 k- bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( {+ a6 b. s% e3 m( P$ [$ q* Kset j& g% Q# P+ D! ]* S4 @
( j + 1)

4 E0 _" ?( U  n/ I3 X7 K9 ?8 S]
- h+ v+ j8 C1 r; t1 clet k 3
* L6 Q" ]0 @% Glet power 0% X% k7 Z" B: F3 l: k
let local 0& H! G* t2 _9 [) Y1 L! X' T
while [k <[trade-record-one-len] of myself]
4 C6 I! `% V1 r5 H( M) a2 i3 [/ \[3 I. g# ^8 g$ I8 x
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) - w- e5 f* x7 _+ _2 T
set k (k + 1)# b( ~2 h% ~# V' J2 j
]; ?& f% _2 \% o2 X) W
set [local-reputation] of myself (local)
; U! x; x2 g: B4 x" s1 u/ ]* @! dend9 X6 g# I: O' |$ P6 _" f6 s* U
  H2 |' y/ t. K! P' L1 o
to update-neighbor-total3 u6 @9 ~2 i0 `) V2 y  S. S

. v/ g+ G7 ?. k( ~4 b: {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" j3 O3 T2 a0 d8 ^! m

; {8 v" g4 w8 Q5 @/ Q' r) W
: x$ M+ m1 Z1 D& M9 M* ]
end# T, x. C. V, O, v9 C% P, _+ B5 H! D
4 p2 P  d# [  J  J5 \5 `4 F
to update-credibility-ijl
7 \. D1 `2 v, [  L8 A9 |! r5 _% H) a+ M! p
;;
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。, z6 Y7 G+ d+ k" C  U- N
let l 0
6 H- p/ w" |7 J2 H8 x! }while[ l < people ]9 Y' q: x( C  ^. Q' W  P$ Q4 _
;;
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
3 [: ]+ t4 D3 t' E1 T' t[) ?" S! b. B. y. k( F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, Y2 v! |! }3 R5 iif (trade-record-one-j-l-len > 3)7 o3 P: v3 S4 x/ P8 N1 G
[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. a/ X: B+ c! i& D9 P
let i 34 H1 G7 N/ m/ J8 C
let sum-time 0$ G% _/ I- ^/ k2 @6 E0 Z/ J0 d! x
while[i < trade-record-one-len]
1 W6 A1 U5 ]4 q" q. ?, T[  W& I# V$ t2 }4 e1 ]) ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  _& o' a) r0 P1 xset i7 t$ ?+ g& W2 i
( i + 1)
" W5 {) }6 ], r+ z
]
# r* ^( w+ D+ b% f4 S! }' Nlet credibility-i-j-l 0
1 b7 ]. H  M# z; A;;i
评价(jjl的评价)+ b8 U" g7 `' J' K' k& n4 t3 \/ U8 |6 {
let j 32 W9 N8 y$ K* I; \5 R) \
let k 4
% y( N0 ?3 d9 M2 P3 ~9 v% Qwhile[j < trade-record-one-len]& K2 S4 F0 Y' @
[
$ _. R) C: b! m$ c1 {3 w5 m6 e$ K7 o2 Owhile [((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, R. Q2 d2 b4 Z4 ^6 v, o
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)
% R/ x" E3 r: |2 ?set j
4 d1 }  z+ Q, M  L" [( j + 1)

7 g" p+ Y' x! q! y0 y2 l6 i+ X]
  D: a3 O- _# u, j! w8 \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 ))
7 r3 y  R; f; _& m5 Q7 G* ^; {) E- \

, q' M0 Z" i) n. g6 E2 {' Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), o* c' l5 N0 @* r6 n
;;
及时更新il的评价质量的评价
( }! ~9 T% L6 v. d8 e$ Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ n0 ~4 R7 O# C
set l (l + 1)( |- a- D* j  N* e2 [
]
" I% s. m  _; ^4 ]0 ~end! I# G6 Q' S4 F% i$ R
: Z+ ^# Z+ ?& v7 C
to update-credibility-list
' v/ J+ N6 Q0 q3 b: elet i 0* c" @7 a( o, i. `+ t
while[i < people]
+ H1 g/ Q& m" W' B6 d$ P/ W/ X4 Y[, P7 D6 W/ v# t
let j 0
7 P9 X& z3 t2 {( d; o7 l; Q6 @let note 00 x4 |8 S4 r! _
let k 0
# s! E+ G5 `( Z' S* v/ C+ S6 O7 F) h;;
计作出过评价的邻居节点的数目( N% r  o( j5 K9 ?4 \- T' n1 T
while[j < people]8 J# T+ A6 s4 o: m9 s
[5 m8 `; X* W9 {* O- N, H, t: H2 {8 y
if (item j( [credibility] of turtle (i + 1)) != -1)
4 m+ _+ j  R( I' E- A0 {;;
判断是否给本turtle的评价质量做出过评价的节点
+ E$ ?) l- M5 [8 e[set note (note + item j ([credibility]of turtle (i + 1)))
5 o1 _6 ^) T9 }) x* Y5 k( e;;*(exp (-(people - 2)))/(people - 2))]
% ?+ U- l1 R6 g! m3 Y
set k (k + 1)1 i, A3 E, v9 x$ d( A, v7 C
]
3 H. Z6 B+ K  C( r3 u4 |) u" ~1 {set j (j + 1)$ s  ~- U% L( y! C! c  B# N" X9 D
]
5 l' j! g" I! Aset note (note *(exp (- (1 / k)))/ k)
2 @& _3 z5 e; u; B6 S$ Zset credibility-list (replace-item i credibility-list note)
. @$ ]: ^% c2 v+ K- `# bset i (i + 1)2 x8 z7 j' t8 D! o% Q
]) ]/ d) S$ h& C/ }- E
end9 p5 W8 U3 @! r5 N+ u0 d' l

/ e5 T0 z, O# S" {0 ^8 R5 Sto update-global-reputation-list
" S! I& k5 ^+ G! s8 R( vlet j 0
/ X8 @8 B6 Q& Qwhile[j < people]
) R- @) L" o- c2 n$ }6 A$ Y6 b[+ J9 q9 h% Y$ Q- L" X( t5 T
let new 0
; Z. y7 Q4 l/ O- J2 \$ r1 l;;
暂存新的一个全局声誉
: q% b8 W) o' I4 E) c" c) ~let i 0
) X5 u+ l; L3 X0 r3 ~; rlet sum-money 0
- j& y# E& O8 \) r& b5 flet credibility-money 0
, m, `8 Q! b$ \$ B5 Fwhile [i < people]3 L& V5 J5 N  r9 m$ Y3 |8 X: l- S
[
  K# S- J# A/ Z, r0 }( Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- |$ c; ?9 |* _9 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' Y9 u5 h' k+ O! g4 `set i (i + 1)
' t4 b: k4 f6 l  i: i8 S7 U]! c0 g# S1 i$ L1 d$ e+ {2 m/ v
let k 0( b/ A( t% c+ Z6 T' V  z  j
let new1 0
5 X8 L/ p) s. e4 u5 x. ?while [k < people]0 o; t6 K. k9 x  G
[
# y' h6 a4 W9 R2 }1 K: Yset 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)9 c3 M* B5 `# i5 @+ F' b& S
set k (k + 1)
. M1 `% ^5 F. E: M]
! A6 t0 v9 |, m+ O; r5 h  c1 Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " C8 W4 y. [4 h6 P9 i9 v  O
set global-reputation-list (replace-item j global-reputation-list new)5 ^/ k8 F  I+ F+ W  n
set j (j + 1)( q8 h% V; }# D9 G' X% \2 ^  l1 x: X
]
! t% }7 f/ L) I! zend6 y1 _, D: c/ L8 V( B5 q" v' |

+ t) P2 ~3 }  S* ~1 p8 @
: y; k, X% l: U7 U" F* B
& B( D" Y( q+ d% U/ b  i  X  ?% Bto get-color
) o6 q8 }5 [4 G3 v$ Z' `2 v6 X( ?& x$ {
set color blue

" e0 J5 W9 n+ u$ x9 mend: P  `. \" |  P0 {' j

4 K' x% y2 u5 _+ [to poll-class2 v+ B5 t7 ?8 ]& X& o
end
/ J( p/ h# F- M- ]- w# y4 Y3 {3 v. S8 H9 M, S4 F! \4 ]
to setup-plot1
+ W9 L  n3 J! P; p- y0 m
1 j) a1 S; C3 X" D% Jset-current-plot "Trends-of-Local-reputation"

$ J6 w. E- z$ M5 W# b
* I' s% ~" m& r2 Z5 N5 H& t6 bset-plot-x-range 0 xmax

/ Z% I4 h; Y6 d, |# D
' Q3 d, N6 Q" `5 p1 {set-plot-y-range 0.0 ymax

& \5 S) m( |9 O: Jend
: U* r* X" L1 V8 s7 f/ ?8 g  _5 q
0 P8 h! P# ], K" ito setup-plot2% e2 G0 N7 J% _4 ~$ ]
- l1 l2 \! i$ @0 ~7 {- t
set-current-plot "Trends-of-global-reputation"

# Z2 M9 u* @/ U( {" q2 h) }" F& k$ }& e  f
set-plot-x-range 0 xmax
/ e( Y4 \3 ]+ d- e7 w/ W! v
3 L8 k7 O$ K8 T$ ~* W! ]
set-plot-y-range 0.0 ymax
' [/ `& x& Q$ a: D: X5 r- u
end
3 F8 t5 a! s2 c# ~2 w( c3 v( ~0 q0 K1 ]6 G. J/ t
to setup-plot37 B! [1 t* V, b9 m- B

  ]* b, L* f  Yset-current-plot "Trends-of-credibility"

6 p6 y, x1 O/ h6 x8 ^
  q, p/ r* }. bset-plot-x-range 0 xmax
0 e  p6 d# i$ \% V/ B8 l( ~7 t
5 D9 m2 L: U, H, R
set-plot-y-range 0.0 ymax
# B4 G7 Z1 J0 x
end
: K. {) H3 N5 G0 \: O
" ]# \4 h2 Q% J! b- }! p% g# r$ \to do-plots
. ]& W& n' F7 `: o# hset-current-plot "Trends-of-Local-reputation"/ L' C3 m0 Z; [: K3 b6 h; a/ X
set-current-plot-pen "Honest service"
2 z9 Q3 C, n+ I  L8 Y4 ~& O+ |. iend
5 Q3 v/ _) \5 T+ I4 x3 \$ e' E$ u
  L5 u( r/ D( r. g* S[ 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.
1 _2 J8 f; e5 m5 I8 t+ J' s3 p4 F8 }4 p) m* w) R
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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