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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:
) C* v1 c. ?5 p1 ~to do-business ) e5 D) G2 m+ G# z! A
rt random 360, v) X' D- q2 M$ j7 t* N
fd 14 l& w1 M  ~; s
ifelse(other turtles-here != nobody)[; d7 s. C# n+ _5 E" 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.3 B$ ^2 S, {, \2 r: S$ V+ o; m& H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; P6 p) k; `' N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. z  Z0 n+ h0 Y/ h+ p
   set [trade-record-one-len] of self length [trade-record-one] of self# V0 m7 O  _/ E& h+ z+ a9 [
   set trade-record-current( list (timer) (random money-upper-limit))5 r9 |- u0 \; G1 k! B

$ V6 ^+ L$ m+ |' C0 h! }问题的提示如下:- n$ J8 N) b8 Y9 M/ r6 k) [
, ?5 \: H0 u7 _6 n2 x5 ~
error while turtle 50 running OF in procedure DO-BUSINESS
) S0 u; l4 k0 S9 g* w6 {- q7 a. v  called by procedure GO
* q. C. h2 T# x; k: W: hOF expected input to be a turtle agentset or turtle but got NOBODY instead.# J7 w4 Z  \5 A  g( A
(halted running of go)5 m2 o" r1 ^4 {6 q

* Q8 F8 Q7 s/ ]3 ~: L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~~
% n$ q& m# Q1 H8 I# S7 ]) w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
) i: E, K: {- a- ]; tglobals[7 n# Z' @1 E/ K* a/ V; _' i! ^# F
xmax" c, q, S% u! B
ymax2 T2 L. `" s9 u' [4 Q# u
global-reputation-list, c+ `# u% d0 j

5 ~6 Z# o( [, |* \( F! I0 y;;
每一个turtle的全局声誉都存在此LIST) k  n1 {( q& U" A' Y7 m1 g
credibility-list. [) j! O" v2 g& B
;;
每一个turtle的评价可信度. v- ~7 k, W. [2 \
honest-service9 T& |7 W: b" g! u
unhonest-service
( ^4 b6 z! t+ u0 I5 foscillation
1 ~) y5 r8 T" f7 L) x* Yrand-dynamic
. h( @2 N; e# T' |! B8 ]8 T]7 `$ T2 m9 o2 V+ V6 p! S/ w: O8 G
# K0 m2 }' g/ G/ c# U4 y6 ?$ Q9 l
turtles-own[
- C3 ?; y, R9 T5 }9 ztrade-record-all- X) I. t7 _  y: t: }/ z+ n
;;a list of lists,
trade-record-one组成
7 w& T2 ^+ \2 d6 X8 u1 Vtrade-record-one! r. R3 ]! w+ R" m/ B" v" ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( E: o- ~* I  G7 b2 s1 Z) [; \! o+ u  m8 a- y
;;[
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]]
- u/ ?- i" J" r; {3 S* @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]
" b, n8 W! s0 n: ~8 ]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% {+ P  ?' t8 p8 u4 ^1 r' h: f
neighbor-total2 c8 Q5 e( V8 V7 m
;;
记录该turtle的邻居节点的数目$ n. q& j/ D' E
trade-time' J: ?, A/ `1 Q0 \
;;
当前发生交易的turtle的交易时间
) H. E9 u& C" K( t% M! f: w) aappraise-give' _5 v# \" x  Q* N6 l! q! n
;;
当前发生交易时给出的评价/ @; q8 }5 l4 ?2 g7 E; f
appraise-receive
# C- f' J" S2 f5 o/ Z' f6 S;;
当前发生交易时收到的评价
  O, N, |9 t4 w/ Q2 Qappraise-time! D, }; ^' p; {5 G1 c, |
;;
当前发生交易时的评价时间
( N* Z3 r& f" ], c+ V' mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
. D( P6 f6 ~% B+ ~3 Ztrade-times-total, e6 O* T% h: x: j" j" I9 v  C
;;
与当前turtle的交易总次数
! \6 a9 n6 e! b: F- E$ r7 rtrade-money-total
& j0 h7 X  Y) Y;;
与当前turtle的交易总金额" O4 f- [/ s( B5 U' Q. Q
local-reputation) R6 B. L# U7 S. `
global-reputation
) q, A. R3 K; W' scredibility
$ N* d9 c8 e; Q0 {0 W: _;;
评价可信度,每次交易后都需要更新# U1 K8 H9 j  i8 `5 l8 o, q
credibility-all+ I' j* x5 j" u. W7 J' d
;;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
5 O. L8 l* l# j8 Y& C, Q
( {  f# S/ w0 `+ k5 G8 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0.55 c: Y% U$ V5 o
credibility-one1 p; C! [) ~6 D; _, J( t! f
;;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people1 F: j# F% ^( M+ P3 k7 U  I
global-proportion: D( E; f5 b, Z. E8 m7 j3 V
customer. @& z+ S1 U9 T) Z2 Y: ?* k
customer-no' N1 v9 R0 f4 G
trust-ok
# T( ?% i5 i9 Y- l" ~" h4 utrade-record-one-len;;trade-record-one的长度
# D6 [' p  j' p5 k/ {8 ^]
! F) X5 t- p8 A+ [1 L, I9 V0 n1 P1 U+ _. |
;;setup procedure
0 J  V- T" T$ V, D# c, V0 }" Q9 X8 P( `' D$ ?( J1 |
to setup
1 k  z! t" K+ g+ [! X% f. `8 r8 O+ V* ]
ca
$ b4 q/ I* }) @3 S* u  c

9 V& U" z# O$ S) [  jinitialize-settings

2 i/ g9 x  f, X- {
6 P; U" H/ i4 ^1 b* n) q$ y% Xcrt people [setup-turtles]
" Z9 ]" a/ ]' [
! K% k1 e2 u# D
reset-timer

# [! p' Z% q& E, v! Q2 w0 n% z+ r% U3 J: I  ^, }6 Y! t% Z! M
poll-class
& e5 k. \6 e5 i) V  _2 O  j& }
* I( d8 G- L- M5 j
setup-plots
& ?, S% H0 r6 G( J  m

' ]; o% `) Q" edo-plots
% m. T& Z) X$ S" x- [4 n# x
end
! N; c& d, W1 t) u" t$ r4 t+ v+ X( R: l& O9 n4 ]
to initialize-settings4 D2 W0 e+ e8 J) @  W
4 d- g. H5 V2 V: I4 u& I4 {
set global-reputation-list []
, ^6 M- D- |  m4 T+ c  ]4 e
5 s1 X& I1 v& f  Z, ~
set credibility-list n-values people [0.5]
$ t/ Z" r! o* D( O( R1 o
" w3 _  R! s9 Q4 R( \5 `
set honest-service 0

' p% O/ S3 k- e' m+ F1 }( B$ `. J
4 ]1 a+ X) P/ d8 B  tset unhonest-service 0

- F7 _# |1 H" E" _
/ Z/ }& z. n% M* r% wset oscillation 0

0 z$ E) z2 t% N, M1 E, {2 U( g/ z4 p% |! O3 H* r! `
set rand-dynamic 0
: X9 N6 Y, f' m0 m7 Y
end
/ \+ D4 N0 [# ?
4 {9 z# [3 j  j( bto setup-turtles ! B2 Y# T# _2 ~  C/ v- g3 W
set shape "person"$ |! M6 I6 R! r
setxy random-xcor random-ycor/ V. o6 j/ v: D% ?9 T6 r1 z4 J& o
set trade-record-one []* R% m) }1 a: y6 r+ a

* E0 P& h  l  M6 e; Qset trade-record-all n-values people [(list (? + 1) 0 0)]
( f5 o8 a6 T' n0 P  K3 F
- B: p6 G; B' u4 I
set trade-record-current []
$ U' V: h9 d, `1 B0 Hset credibility-receive []
1 m0 M' Y, ?+ y9 j1 ~set local-reputation 0.5) u7 V0 A) h: F% |4 }) P! ~
set neighbor-total 0) ?$ ^/ O2 l8 v" M
set trade-times-total 0
$ ]1 w: j* I  H; v$ Uset trade-money-total 0
% B8 S; J% Z) Hset customer nobody7 j& x; R" y" _& N' G4 y
set credibility-all n-values people [creat-credibility]* b3 F2 y9 C9 `. C( p; A, }% p" k
set credibility n-values people [-1]# i7 G2 b6 j. o8 B( T5 U, k
get-color; @7 i  p+ r+ ]6 K& r. D
: E/ q. W. s% q" `
end
0 o  y2 R4 E% ^3 \- m, F
; s' n2 J/ k: m; nto-report creat-credibility
1 t9 O* `9 Y) F  {report n-values people [0.5]/ {% U  E3 N" T. \2 [
end
: [' _' [8 h% ?4 X* N% p
9 c) q- {! c8 Z1 R" {to setup-plots. x" V1 i+ Q/ N9 S! H  i9 ]/ P+ y
( c$ b* [) u3 F2 ^1 v( B- x
set xmax 30

! G, E* y4 b8 q" m, e* A, U' Y# [1 n. X( A3 b
set ymax 1.0
  |- n+ ?3 C& k3 x' j

- W4 X+ B+ ?) g% p  K' z1 S& Wclear-all-plots
0 Z- y! H7 y) u) Y" d+ d
- V: v- b) Z( U3 X' R2 b2 x- g( n
setup-plot1
; a# y9 M1 q6 x, P# G' C) \4 W/ @. r
; I' Y& s: j  b* l" H
setup-plot2
% Z) j: H( e, L8 U# q4 ~0 b

& E' h) x* a. ]  G# i. vsetup-plot3

- R1 a% N& [8 Y! H0 A# i( cend
& B0 K1 _) e9 ], b) p4 }' K4 f9 `5 |0 `# S
;;run time procedures! Y" d) y+ n) ~2 `, Q" O. @

; K% ]0 Z+ u- _to go  _' F6 A+ h: ]% L  @

; }1 J' q. Y3 pask turtles [do-business]
* x6 c* w$ I( m0 y2 k
end
- c. ]1 r$ \8 ^) r4 u4 ?8 @* j$ v& s2 j, q
to do-business
5 u. }1 T+ d4 U8 a5 _( d
; R( B2 {; B$ X) _* V: p1 l

0 Y+ X9 f2 S# krt random 360
6 M9 H( z( K) b( V$ @
& h9 r* I  ?8 b
fd 1

2 C, a/ g5 o% o: b; U7 H& F8 d6 U$ y: K6 N& c1 \
ifelse(other turtles-here != nobody)[
0 V5 H+ w; `, e, R

4 F) @& ]3 g( T* Y" p  @set customer one-of other turtles-here
% O, ]" L1 o5 O* K

7 g/ J  |5 {5 \& x8 I;; set [customer] of customer myself
+ h$ v  t+ U3 x0 J( N5 n% h

: d/ Z7 C: R7 |4 G2 Y: a7 Gset [trade-record-one] of self item (([who] of customer) - 1)
# p- A" U5 m6 x6 P, N, G[trade-record-all]of self& Q: x' H* }/ X, K5 G  o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 e" m4 U2 p( [, ]1 G, g2 A, f: n& M: B- ]" L! P& ~
set [trade-record-one] of customer item (([who] of self) - 1)
( g5 p- r* o/ c: x[trade-record-all]of customer
2 w; r9 b8 o/ |. D: [2 f" |$ i6 O
( L7 q1 l/ d4 i
set [trade-record-one-len] of self length [trade-record-one] of self
! L& K# M/ T  M) O, X
8 R9 B! D9 F* B' W. K
set trade-record-current( list (timer) (random money-upper-limit))
, H! c2 C; r$ |! E

3 L0 |2 q7 p3 J, ?1 @ask self [do-trust]" V+ _; _- g% @) n5 y9 k1 P! S
;;
先求ij的信任度
2 n' I5 o- w# s- G. Z( Y! r$ a, T7 f' b( J
if ([trust-ok] of self)
( L" A$ e+ p6 o. n1 O4 `;;
根据ij的信任度来决定是否与j进行交易[( _( f. I4 o1 N' ^( P' B5 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 h1 c/ I9 A' m; K& |2 H/ k: {: ~
8 ]3 a3 P+ B/ _& c0 g5 `# `' X[
/ n5 i% k6 U3 Q( y
- n) h# o& A* E1 B5 M! [2 S
do-trade
0 }# \( O* O/ x7 \, A

) C+ V. H' D$ F2 h# q  m0 ?+ ^; oupdate-credibility-ijl
2 \" }9 T; {7 T, Z1 ]3 g- X: d2 z% J

* k2 }' w3 o. `* Dupdate-credibility-list
3 ], e' N- G3 b0 W. [3 w4 r. b0 ~5 S( Z
% f. s( N8 Z) H6 g) n% U! b% ?

' ?' D2 U1 L1 P8 L' Hupdate-global-reputation-list

9 t) A/ F* e+ R) _+ |
, F; {) q+ S# V6 l% b$ jpoll-class
! H/ W& A* J6 d1 z

" D4 x6 |. l9 W% P0 g3 yget-color
5 [- O' V& ]( ^) Q6 e' E
9 q9 y5 X  Y9 C3 K
]]
& q* Q, D5 p  J& o6 Q
/ }! `4 F/ F: V;;
如果所得的信任度满足条件,则进行交易' i2 H* y1 ]+ g  w: f

5 b+ [+ I) Q* t; E[

" l6 t3 D$ }6 _; M$ f4 v
: X; T" y/ P1 _rt random 360
* g5 l" Q3 F# e/ r- [( [

0 [6 Q. D3 S; P9 ^" X9 ofd 1

# D0 w- p- s& o# j7 t- X( o5 E' b9 D) w
]
8 m4 _0 p" W  U7 k) D  p( P8 o+ N; _

6 N3 ]1 x" R$ V: P! q8 }end

; H/ @) n- j( l! `# C- _, l* g2 k+ [9 `1 C
to do-trust
) J% j! j" O5 E- i4 t8 iset trust-ok False1 Z( U$ B3 ]6 M9 @) J" a  K, W
/ }+ i1 ]" Y" D$ m& z: i! w
8 M* b( J8 W6 n# @/ [
let max-trade-times 0& d- J- M+ o8 j# N! F" D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! J  h$ \: _7 q0 Mlet max-trade-money 02 f. ?5 N( p% X" T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 b/ h5 R( R- flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. T2 ~0 {1 z- R
6 D3 z- C! g, E( b- i9 \3 K% V

, {+ l' m. |; Q7 Vget-global-proportion
- a2 q2 s3 `) N/ `' Nlet trust-value: B- I6 x( C# S4 [  k0 _
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)

, P+ H! C8 u9 bif(trust-value > trade-trust-value)% r7 A# W& Z+ f* Q
[set trust-ok true]$ @* L' o8 t" u0 Z
end; d* Z6 K$ E2 h/ a0 h( m8 j# ]
! X$ ?4 |* P6 q  H  l3 k7 R$ |
to get-global-proportion
$ e! H+ [1 p6 m% q& Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). z7 K" c/ V3 e0 d# F+ v
[set global-proportion 0], J- P1 C# G7 H) b; W
[let i 0
8 d( x% n# v! ?9 }2 dlet sum-money 05 }7 ^: ?' k/ q- n5 k& W4 `
while[ i < people]( m; D5 y& g7 H( C
[3 p$ _$ F6 x& h7 M; _6 L8 ~
if( length (item i( c) N4 u' j4 R% h/ W' {
[trade-record-all] of customer) > 3 )

% h" F0 A. S1 j* J) J0 f1 p[; V* b; W# J: `3 _: g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 H" v4 ?+ c) c+ M
]
/ c1 k1 o9 A4 r5 d& p+ h5 A]& G( C# c* i; N# D( n6 _+ k5 l
let j 0
4 h2 d& n* }0 C1 y6 l* k8 s. Ilet note 02 F- s7 ^# _3 b3 ?3 Z# ^- C2 Z8 |  z
while[ j < people]: `  C# B- P3 }
[% u9 i! L+ J  ]1 w7 e
if( length (item i
  _( @7 |& n% I- ?[trade-record-all] of customer) > 3 )
$ A, Q5 w0 }, n
[
, ~* A1 ~; N* n+ z" _% _% v/ Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); G! l& `3 a" y) E" ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! o- o5 `6 K; ?$ n7 I- T
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 R: o. I* e# V' [; m: c- C5 A
]+ A2 e2 i; X! O  U9 P, m
]
! a( `$ K6 a1 }8 G) W3 R0 @; yset global-proportion note
& T& i! a$ n9 J) D/ N' a+ w]* E% E; U" {5 W1 Y8 d
end
+ x/ x& b# P, f1 m2 W* n8 Q) ]& g0 i% h; _. L
to do-trade; o  [! t. \9 V! J: O: ?
;;
这个过程实际上是给双方作出评价的过程
  W, C, Q9 u/ R/ cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! `5 N6 m2 |  e9 z! V. ^7 ^+ O; m3 f6 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 A- w( c! l( A1 a" Bset trade-record-current lput(timer) trade-record-current( z% M& q; i$ r7 @) \
;;
评价时间6 z7 d, I+ p0 P: Z( J
ask myself [
/ [! Y9 U! P3 X% b# s0 O% P) Bupdate-local-reputation& ?2 M" u4 x9 Q6 x# L3 t. d# I
set trade-record-current lput([local-reputation] of myself) trade-record-current) e% T! C2 p) F* c
]6 c. b0 z" {: C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( A$ y, @3 H; `- `$ _; Z" ^
;;
将此次交易的记录加入到trade-record-one% P7 Z& A' C. P: ?) L7 N) n% v0 Z) R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), j0 [- w& Y3 G* k
let note (item 2 trade-record-current )+ _2 Y. m( S4 ~6 q3 a
set trade-record-current
) \3 |/ H; B4 ]$ E4 G(replace-item 2 trade-record-current (item 3 trade-record-current))
2 E7 k; v, ~1 I+ E  E8 B: F2 N
set trade-record-current, o+ v& E8 r$ W6 d8 A( B& d) u7 n
(replace-item 3 trade-record-current note)
2 ~/ y3 \" q1 S/ r$ v/ S
- k2 x- ?/ |. ~1 w) Q

6 `6 ^7 |) t0 A/ J$ ~" ?ask customer [
' ?6 Y1 z- @! |& |8 N* {0 g3 c  \* oupdate-local-reputation
" k9 Y. D' W* K3 r1 jset trade-record-current' O0 \8 t6 L3 C
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% O8 c9 m( @9 x  i& X4 B% P  f]/ G3 T  Q  E; a! q! U

9 [7 q. A: \3 e) O/ ^/ |

! t& V; ~  {/ u* P8 v6 s' Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* \! d9 u8 S# \2 [$ x; t: b1 y
# d! W  \) W: d# O* G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), j0 P- V' o2 y* h0 v4 m9 S
;;
将此次交易的记录加入到customertrade-record-all
+ g/ k9 I+ J$ n3 Q& V( Y1 Y+ |7 l& R+ Cend+ o7 Z9 U& R8 q2 p" y' j# G2 Q7 ]7 H
$ O( {0 V) @% j0 l& c3 y4 P
to update-local-reputation+ w9 Z' m; ^8 I  t+ W$ |9 g  J
set [trade-record-one-len] of myself length [trade-record-one] of myself7 O, W9 k$ F4 {  o" d* s
# k, a- U! V2 j# ?6 p

2 j9 o: M, e' d7 M9 H8 ^" O;;if [trade-record-one-len] of myself > 3

! m  d+ J! `# Q( P- f' l& @update-neighbor-total2 ]% ^' M" s8 i# h* a
;;
更新邻居节点的数目,在此进行
" q: v6 @/ b; [+ Clet i 3
) e: a4 t& ]  s) M; Hlet sum-time 0& m( a: Y' C" h4 B8 B& Q
while[i < [trade-record-one-len] of myself]. q+ `5 w. m0 M; C0 b# z# [
[' O8 H5 I; Z* Y$ ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 V2 ?8 O) }4 T1 a6 P+ ^- P9 Fset i
# g5 k: F( ^# a1 J3 [" l( i + 1)

1 V! L5 k$ e# R0 W; t3 m/ S: f]
, I# _: z1 q' elet j 3; h. l0 i% Y0 A: h
let sum-money 0
* H% f* l  d. O' wwhile[j < [trade-record-one-len] of myself]2 U- X  p9 ~* [3 f
[# ~3 X' X: o1 U* r7 u2 C2 t
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)/ ]; [  Z, a5 ]
set j: p/ p/ x" y$ q1 j# w. c1 r" M
( j + 1)

; }/ U7 Z! X' F; Y5 ?9 S]
; f0 S" w6 Q' k0 V/ Flet k 3
1 P8 B+ G/ O0 g6 _let power 0
6 P; f  B6 }/ @4 slet local 0
" E$ {' m. [; J5 r* Z$ B  y4 gwhile [k <[trade-record-one-len] of myself]
7 B, J& J7 ?7 v/ B( J7 D8 p[
5 i/ d3 @2 f0 M4 n7 g& W# i6 jset 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) # l) @& C7 I" g* X
set k (k + 1)/ x- y8 m& o- r. [2 q5 X8 _: C3 Z
]/ Z8 E* ?  G+ G" n5 J
set [local-reputation] of myself (local)
( Z1 R9 X  Z, \7 hend& k  R1 v% b! t3 J. X3 m2 j

- A8 k0 Q- f, e) Tto update-neighbor-total9 A. p' p2 X$ l/ t1 ?  K

) X4 j" t$ k6 M! I, Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 H# x$ ?0 N6 ^$ |
, x4 v* @9 U+ Q$ V

2 e- z+ \: }- s3 Z5 o; ^/ bend
' a1 e* B1 P1 \- ]7 d3 o) J0 K+ Q% d: o
to update-credibility-ijl ; d7 ~) O- m  G# ?
- M/ s" n1 \* n+ g" U
;;
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。  ]( q2 p2 r$ M0 A2 t* q! t, ?
let l 0% m3 J2 ^- ]  A
while[ l < people ]
8 [6 ]( _$ V( D: _, |; J;;
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
9 S  b0 u2 Q/ K# i! @[/ ^& z- P. F) {( }9 ]" X: Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ O/ p4 `8 k: g: e- U3 S/ A+ `! sif (trade-record-one-j-l-len > 3): Y, v6 V; `# _, E; v" @$ h- I
[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
8 R: A# t! @; V6 ^% j2 u4 Vlet i 3% Z! T2 E6 _+ L- w/ g* W- m) i
let sum-time 0
/ A( O  G( G4 `8 owhile[i < trade-record-one-len]9 Q( L2 T2 R$ @. B* M
[+ F- f0 @- p/ J2 y! r# \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 B9 [; f5 f- U$ y& t, n7 sset i) ~7 j% ^6 f- `' `$ u
( i + 1)

- x: i+ Q* o  P$ _# k. x5 l$ S% s9 J7 T]" z; \' C; L/ s; a8 ?
let credibility-i-j-l 08 I- v( ^8 \1 s/ [" Y
;;i
评价(jjl的评价)% e' B: o, Z. U; C- p6 C
let j 3
- k+ z, g. S# S- {4 S- Z  V. D$ ilet k 4
; O) l3 m- m; f! |3 C; m1 U( lwhile[j < trade-record-one-len]
3 f) B2 y3 r! F2 E[- Q4 h) Y5 N0 k
while [((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
4 r0 g+ Y; h6 `; tset 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)
! M0 \  C) [9 q/ nset j
* L9 z) k5 d! G; {5 n2 Q( j + 1)

. Q. o5 x6 ?  ~/ n! s( W]
# g7 P1 r* I  t/ D" aset [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 )): N3 y% J  N% J

- I) f, j' Q: _7 f3 \5 ?- s# Z
1 N3 B% A. k# ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); ]) U# V9 X2 V6 f( {2 x* A7 j
;;
及时更新il的评价质量的评价
7 j$ W: V4 F( L8 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 ~. n6 p0 h) w! K4 q
set l (l + 1)
$ O/ D! [. w6 _  |! D: g]
. ?% `* ^0 C( N: ]% Tend+ U, p' E( V8 a! f7 n2 E
: q  m' H* T% P( }& b& W+ T8 R$ R. e: O
to update-credibility-list
& t$ c, T6 `- R2 E( \4 alet i 0
) P. q6 b% S+ Q! a' w( kwhile[i < people]
3 n; `8 ~2 ]2 E" W' O[
' o4 U' Y- U; I$ G1 P. U* Elet j 0- ~: v% d6 U0 u- w$ [7 f, |
let note 0  U" S/ x* s. v1 m2 R
let k 0% v) M  c  \8 a" m! a) E
;;
计作出过评价的邻居节点的数目4 T3 ]% j" I1 S6 D" @& ^
while[j < people]
* L5 N4 K, k/ N5 E[1 A* ~3 X4 b: Q5 R  V' q4 m% \. y
if (item j( [credibility] of turtle (i + 1)) != -1)+ o6 }: [# O5 S: K
;;
判断是否给本turtle的评价质量做出过评价的节点
+ z$ Z' C6 Z/ O+ `% y[set note (note + item j ([credibility]of turtle (i + 1)))9 p7 @# W( r+ D1 a  D9 X6 B
;;*(exp (-(people - 2)))/(people - 2))]

- x, m# ^$ [' l6 j6 Sset k (k + 1)
5 G: U1 {+ t  ]( V]& b7 b- x1 n: i
set j (j + 1), d" M; W, P& M: |6 P+ h# T
]
/ r" g, _" @0 F' l1 G& fset note (note *(exp (- (1 / k)))/ k)# p5 @$ y5 Z2 p7 e! N2 m
set credibility-list (replace-item i credibility-list note)4 P7 n# o1 F! s% O4 R* E7 h
set i (i + 1)1 k2 N# A* y. y! P* G" {. a
]
* F0 F1 E$ O) M7 M6 _( {9 v5 nend' Z! O" |5 r& A" f; V9 B( s
% ?0 j- s0 Q0 g5 c" m  q- a" y8 a: M
to update-global-reputation-list: O9 b# P  }! o5 C: b
let j 0
- p9 L  |9 }( {  |while[j < people]6 z5 B1 N; O5 i2 f8 _4 t# M! b" Y; C' ~
[9 D/ z) k! i& C7 K6 Y9 w7 C9 n
let new 0
8 T' Q5 X* d9 a; k# l3 P  A" a: K;;
暂存新的一个全局声誉
7 h0 U) B, ?- c* a$ ^let i 0
# D5 A0 b6 s& R% l. `# Zlet sum-money 0
; @, K+ x, l0 Q3 k2 X! }: U: dlet credibility-money 04 B& x$ f/ G4 y" J! j# x) ?% {
while [i < people]4 Y3 V" i/ \8 r' x; K; K
[% l0 F# a6 _4 ]) I; S; _3 u* i- Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ u" j: \4 b5 Y* L2 z$ Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! h& m4 |. l$ W* C, p
set i (i + 1)
6 @5 [2 `, a3 O2 _]) ^# ~8 P* a; {3 k5 D
let k 04 `# A7 Z# [2 e6 g7 D" g
let new1 0& t! F- g5 H) n6 @; s
while [k < people]3 N5 V$ U9 F8 |; v/ Z
[
2 B( m8 [$ }" x8 l- Qset 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)3 P& f4 q2 R. V0 Y8 K" `
set k (k + 1)
/ @# ~2 _6 G( H8 k( H6 e3 J2 N]" y0 T: K9 H, R5 Z. g1 b( S* }9 }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- V2 q3 g& `* K- G, uset global-reputation-list (replace-item j global-reputation-list new); [& |$ {$ G1 {  h  B1 e1 ?$ _
set j (j + 1): ]' |1 ]- g  p0 q, k- e
]0 ]8 N* R0 [9 Y% s, ^( |% Y
end6 ~/ z1 l, p- o5 z
' \  X6 G/ A- P* b8 s* L# z

* F0 T$ Q2 s$ M$ Z" m
# L( d# Y% F- ]3 L1 S2 Dto get-color; H4 h# i/ a2 A9 g& _- W

# D' n+ r3 Z+ S! J: b2 iset color blue
0 p; X! T# @$ y8 |
end
" i6 p3 U1 L1 J9 x. k- q3 A9 {
+ S( j2 P3 E: I3 C) l$ Uto poll-class
+ o1 |0 f: q) J- }) Kend
: c$ f8 f7 @: D
6 i8 O5 N, ~1 Z, S1 uto setup-plot1
; h- Y2 g  m( ~1 \4 P; P$ B
  S! p- W! L0 R- f2 d; T( Zset-current-plot "Trends-of-Local-reputation"
% {& h* m3 _4 `% W2 z; ~

: f! }) X& J% A# M; @/ h; pset-plot-x-range 0 xmax
& _/ I8 H' J3 J0 D

$ r1 h$ P8 a+ Y1 H. Fset-plot-y-range 0.0 ymax

' w; U- r2 V7 ~' `- H, jend
+ [9 f) q8 M. N' y$ Z  _5 |7 {+ r& H4 F- O: V
to setup-plot2
3 A4 r* m6 _1 z# ^- k; W0 x! y% w4 `0 J& B. l
set-current-plot "Trends-of-global-reputation"
( ]) ?4 l* \$ l9 U/ l9 V# K- P7 p4 `
% v+ W7 \% t4 j' g6 _
set-plot-x-range 0 xmax
! E1 b  A& a/ c- `$ n6 U2 ]
$ }. w6 T  E2 s2 |' Q( v1 l% U
set-plot-y-range 0.0 ymax
+ ]; d1 |) T5 R* ?5 t' G
end2 l& [* n5 E: m1 h/ d1 t

7 J# j: X+ J: b( d5 `to setup-plot35 J2 W. M1 w, B3 {

$ `- {, ]. {( W+ Kset-current-plot "Trends-of-credibility"

+ O+ u! T% v1 F* O* O% M% B8 g- s% z* V  D( J" R
set-plot-x-range 0 xmax
1 N5 r; f$ n0 P
. f) \- F  `6 \: L
set-plot-y-range 0.0 ymax
& ^. q0 Q& c) @3 q6 Y
end# i: l! M5 @  L# `. U# j  Y) \

& t* ^7 `+ V7 _to do-plots
7 n0 ~+ p. B7 A: Y  }  _2 `% ?set-current-plot "Trends-of-Local-reputation"5 ?9 u. w) w7 G9 h+ X4 }
set-current-plot-pen "Honest service"2 e; F" W$ r- ~, [& _6 p
end
' o' a3 f  z  R- i; |
/ s! E" [" P1 H: T" M8 ^5 ?. Q; e[ 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.
$ V6 m1 P2 @; z% s( z4 Q/ [+ G1 Q. E
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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