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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:" t: `6 z' b! L  @! y
to do-business / r# Y* I6 `* _1 a' k" y3 q" i0 G
rt random 360; j+ u: z0 M1 G2 }$ k
fd 1
7 x  E. x6 c+ h3 @2 C6 p5 r ifelse(other turtles-here != nobody)[, b$ p9 X  o8 P7 c" u* e8 g
   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.. a- C( D; b5 b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 f6 C* Z  M+ j2 z/ M  ]
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: ?( d/ M" Z& R5 B% F6 [
   set [trade-record-one-len] of self length [trade-record-one] of self1 y2 l& q" H* @8 f
   set trade-record-current( list (timer) (random money-upper-limit)); Q  a  o2 ]9 Q4 R$ c, x" D

+ R, D, X5 f; R问题的提示如下:
) L2 H- O* T0 l) ^2 ?  d: F% X" ?5 W4 s  h5 L' j3 }
error while turtle 50 running OF in procedure DO-BUSINESS0 _9 R2 B0 u; J5 C# w( Z
  called by procedure GO
2 k5 a3 D# _$ Y0 V* Q9 B  EOF expected input to be a turtle agentset or turtle but got NOBODY instead.; W7 P8 R4 p2 K% g! P
(halted running of go)
3 y! d' m3 d" A* Y. Y0 P! g* @3 x; [) H$ p, V
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~~
  @6 m( ]  [! z& z5 `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
" o4 R. v+ I1 G& W% oglobals[$ o- `: U7 H8 e7 X
xmax
) A3 n% K5 l5 I3 `ymax' j* v2 B. D2 Z0 [/ z& Y
global-reputation-list. M9 L& }9 A/ m. e: f
* c/ w2 o% l  H6 p: ]1 K
;;
每一个turtle的全局声誉都存在此LIST
( p3 C. ]1 O% a( N" I" q1 Ucredibility-list5 ~! `( J0 x5 J3 ~$ \9 D4 I6 }
;;
每一个turtle的评价可信度
& N& D2 @& b2 \8 H" g$ Rhonest-service
& v: v$ w' J( Z$ _1 n: junhonest-service
; s7 e! m" r9 U; d; Uoscillation8 E1 e9 {9 ]; p* E
rand-dynamic
! L2 ?: I/ u8 {]
0 Q9 I! L0 `; D. q3 g! \" G! {0 ?+ _( P/ d  t3 ~  ?% Y7 X9 u8 {2 ]
turtles-own[7 b; l* Z9 B. f; d) Z* ]
trade-record-all
3 E. R, H' J/ J6 N;;a list of lists,
trade-record-one组成  X4 A( J3 D$ I6 d$ U% r
trade-record-one" b+ h+ b' I+ o1 ?/ l; a! m
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. L# y' E3 P  d6 Z& ~! p+ [
6 Q3 @+ ~# v; |' J0 }  V;;[
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]]
' W4 ^7 C) M5 u: O) A0 _4 q; N/ }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]) r' M, e+ \$ l3 f9 M6 E7 U8 Z
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
( b2 e' q& S% V0 x& aneighbor-total. v- U' T. s6 v/ j- s$ q
;;
记录该turtle的邻居节点的数目
7 U! T; Y& H$ Z- [, Ltrade-time( o7 k; c/ n; n% Z
;;
当前发生交易的turtle的交易时间- s! Q! F  r! h. y* v4 }: ]
appraise-give
' p" K$ j2 f, L8 @" r! [1 j;;
当前发生交易时给出的评价
7 V$ Z- O% o' M- l0 r7 [appraise-receive
# w7 a* M! q# }& b;;
当前发生交易时收到的评价* p' m* x9 |/ c' E" s$ n  J" h- |
appraise-time; C9 ^4 V6 J, H$ K! v3 a( m
;;
当前发生交易时的评价时间
2 n0 i3 b+ M, d. [& i* c( @' Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
. Y. _, D" w1 ?0 q+ i2 w/ o/ [! C6 ]trade-times-total
, u: A8 ?$ [% c2 V$ N5 M1 y7 l/ E;;
与当前turtle的交易总次数
- R5 S. R/ C& I  a4 htrade-money-total: E. t9 v& P4 c! n( X, I( k) x
;;
与当前turtle的交易总金额
, _5 [/ g+ f# i/ ?6 [/ L5 qlocal-reputation
7 c3 S, b' g* r. N% Qglobal-reputation# f9 y) h$ U8 k) I. l
credibility
% K5 v7 E; Z- M3 B;;
评价可信度,每次交易后都需要更新
. Z& K6 U9 N1 z. m; |credibility-all
. G: T5 R5 W$ |" |4 ]* H  A: _;;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
, d+ G6 b) m5 i8 B4 q+ o! G
1 j. V9 i. L  N2 V6 _" S* r;;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, W7 S( G. q7 Y; O3 h6 E" v% K5 _
credibility-one* O# [6 u$ D2 `: z5 l
;;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' G( M7 a  a9 h) `
global-proportion+ b2 o4 v$ ]# B
customer2 L: v' M" H) p5 A
customer-no
1 T' w9 G! }) ?& p2 L) ktrust-ok1 ?+ P$ D4 c3 t! k. Z
trade-record-one-len;;trade-record-one的长度
/ D3 f- U5 y) i  E7 V; Q. }]* M" U" d+ d+ l8 J8 |! E4 U
, {) s8 ^$ G- n& O) |; X
;;setup procedure5 X+ |. y) Y6 P5 C7 b
. W$ }& Y* y2 `- b& p9 D3 \
to setup
8 X1 G/ I% C: P* a( a
  r, i9 Q1 M' S7 Mca
& o) ^" v& o2 e

  s: K4 |; ]; s2 |+ c% yinitialize-settings

: W, [5 V+ x' i1 l! G( b! O1 J1 W7 Z# i
crt people [setup-turtles]

$ H1 }9 R5 R, D: `& D2 }5 K
7 M8 j/ ?+ f/ [- z2 h5 ?! n( a# `9 _# `reset-timer
5 X3 a% Y; f1 R! j. \$ s
/ x: ~7 `, }- `; q
poll-class
1 w5 g8 L: K8 A! V. }0 z
# g/ o5 g# P5 m
setup-plots

# n: m5 y0 P9 [( J, s8 X) k; x3 _, U  {# R
do-plots

) }; R7 j" H, z4 Eend
7 u* i1 y1 G% N5 h  ~3 g9 Z9 u: C, p' B; Z
to initialize-settings6 Q6 b( Y& v7 f

7 N; P. e5 r& C5 yset global-reputation-list []

7 w& z+ p) K/ W2 f+ t# [4 J& `' s$ i% o3 |
set credibility-list n-values people [0.5]
# ~3 Z, ]9 r2 Z7 ]
' [# {$ `2 I2 }) _- w6 @& s
set honest-service 0
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% e+ y; M) T+ C- Q8 A
set unhonest-service 0
/ K0 W" e# w  g! h

0 V8 O3 _2 h" B+ q& q3 E3 jset oscillation 0
* R0 h1 g, t. a8 D/ R2 F
0 P9 o8 f) L7 K
set rand-dynamic 0

4 U3 l$ U/ {  U! o; O! c7 uend! E; ]+ [* H8 `* b! `1 T1 B, w1 |
$ `4 v3 J' Q( S' y( M3 O% U
to setup-turtles
9 H6 @: r6 ?0 M. _) p9 x/ h$ c& G7 Uset shape "person"
! M1 k8 t' [7 K4 W2 Csetxy random-xcor random-ycor! S* {( y7 E% P$ P) u
set trade-record-one [], ^3 T+ t9 L/ ~
6 U3 U" V/ t# V; U0 S9 L) B
set trade-record-all n-values people [(list (? + 1) 0 0)] . c% h2 d' y. b3 P
2 @/ D8 T$ g+ v6 O. X) ]
set trade-record-current []
% ?9 l1 ?; j: s2 {" ~set credibility-receive []
! q& S1 X, C& f0 [, e/ q7 Rset local-reputation 0.5
5 O1 v- G! e. y) U/ W( Eset neighbor-total 0
) W' e3 M* F( ~/ hset trade-times-total 0% p1 n; x' r" c; L  _7 c6 g' ^  E
set trade-money-total 0# [% r: P" p) v! f6 Q2 X
set customer nobody: f/ J* h! s8 N8 J4 S( ?0 Y6 c
set credibility-all n-values people [creat-credibility]" J9 `! Q) K& z& d  ~3 Q
set credibility n-values people [-1]
, S$ z( I% p4 ^( w, m: j! W; Mget-color# Y: S; [, p5 z/ k0 o- p
2 s9 u* L, {& p9 b% A% S* E
end1 ~/ b7 i$ d4 T+ p3 w
  R+ i0 {6 \3 b4 E, A# L
to-report creat-credibility
) ^4 h5 l$ ^& ~- S" @report n-values people [0.5]1 J4 z& n, L8 g& J/ Y; s4 N
end
+ |# v7 d; @7 ^' w& o; s) K$ N" p  M! ]# G) r: D
to setup-plots5 T0 V, D7 g' q8 M% L: Y
% v- I9 R4 W* v1 i+ l5 {1 t
set xmax 30
$ V! n' H9 f' c
: u* i* z  e/ S( Y4 [' r8 L6 o
set ymax 1.0

+ x7 b8 e) p$ {* f: n" K6 q1 y. M7 [! N0 I, x( S* h7 \  x% z( F+ T( c( J* @
clear-all-plots
8 o! V- |: G. h& q6 |  U7 B
9 u8 U& \5 N  _4 ~9 D6 b, V8 |
setup-plot1
% g7 w, q9 l* f! Y! N
. b. \# Y5 @4 |8 g3 ]
setup-plot2
0 X. E& Z! a, _% b4 B% n# O3 b4 N! x* O

* L1 l: Z' r9 R. Usetup-plot3

8 s- C( Z* \# x& f9 m* A* Send
, D1 a" H- D1 x# Q4 P6 D
3 i3 Z, v' h/ I2 J3 w1 M;;run time procedures& U8 q7 [4 e4 B1 g

$ _2 H# I5 f) h$ p" rto go
6 [2 u4 R$ j( \. ?# o4 N! ~
, O) y4 R8 {4 z2 A$ v. f' Z3 Qask turtles [do-business]

. {) m+ I( ]( T5 E7 {( v; send
" V: ?4 U# r; B- h, A* {! ^$ W9 K, l6 i8 S
to do-business 1 E3 U1 x0 t# N, M. k# r

5 E) U4 x/ a" E8 b. D1 U& b' [* Y/ L3 p+ F* F" n" [1 r- v  M. V" ?
rt random 360
+ X$ M; \% S6 F; j6 z
. q. `" ?3 ]5 N/ }0 `9 K% M8 M
fd 1

- x' z$ \$ n" l% ]1 j* p9 k; Z; ^) I# F( W& j1 v4 W
ifelse(other turtles-here != nobody)[

, g0 |3 h$ ^4 [" L* ^2 f4 m. S7 _* t& k: {( s# c5 j
set customer one-of other turtles-here
4 J. _6 d' H$ m. [" {
& s0 h) f6 l; }
;; set [customer] of customer myself
. K' q& h! P0 Z( O

0 V! `$ C$ c1 K$ a" n. L9 Q+ Aset [trade-record-one] of self item (([who] of customer) - 1)
2 u$ ?+ ?6 ^/ ^: `[trade-record-all]of self1 Z9 R- \  C' Y" ~( Q6 Q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 G) |* L0 s4 @  P' L' b0 ?% {8 i: t( R; y/ y% r* R
set [trade-record-one] of customer item (([who] of self) - 1)
5 ^8 y, W  R' m. j[trade-record-all]of customer

+ K$ V( [6 |/ G& o- A3 v9 B2 w2 n: m+ q
set [trade-record-one-len] of self length [trade-record-one] of self
8 @7 d) K# j. U- u' {
  _$ d) z- r- `  k& ]" |
set trade-record-current( list (timer) (random money-upper-limit))

, A7 A: N5 L" l' E
2 m2 r! v* n5 [ask self [do-trust]
6 O$ f& f% B1 d  h  G# W;;
先求ij的信任度
( G& @+ e- d( m6 R( G1 |; I; ^$ h/ `0 q/ B; B" z! T  v+ r
if ([trust-ok] of self)  ~* A8 Y8 R# O; n9 H
;;
根据ij的信任度来决定是否与j进行交易[
& N5 J+ m8 O: c/ j  q9 d" I# sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ }* W0 r( p, u* e6 g
6 x( m: S" `5 X9 k9 P3 S[
% c( @7 S. O3 y8 S
) U: o. b" z2 [* M' F/ Q/ N
do-trade
* A9 \  \. I9 Z% f2 B' s) D

+ R, a2 {. d6 ]% h: ]+ Yupdate-credibility-ijl
# q8 p4 b1 {  s; d- q- T' n6 l( x

* e1 s8 l8 h; K! a6 c3 {9 _  J' }update-credibility-list
- R. Q! K( x* g& ]! d4 M; [% F

- B. T( i/ t$ c/ ?  @( L2 R2 k
6 `' L. B) v% f$ N( `' R- i* x# i2 wupdate-global-reputation-list

6 w" I8 k8 {. E! |4 M# S( k4 p
8 l/ M, N3 v+ z% epoll-class

  }. t& z- P3 u0 B3 S3 K' [" x! e% V; C$ h
get-color

# f2 |! Z3 @& S2 W% ~
$ }, X' o( |5 f4 E7 x& c) V]], \' O  I+ u, U$ j
* o, y7 D2 D& Y8 R# `- ~
;;
如果所得的信任度满足条件,则进行交易1 o5 T& u' Q9 S6 u
1 g6 q; }. I! H/ V, J$ T
[
. p% s7 I% J" m; ]  {6 F4 N
/ N1 n/ {) O# o- A7 n5 }
rt random 360
; u$ _( o1 d2 @& r
- E) }9 e8 A. S$ r- n5 m2 Z
fd 1
8 h( E5 g( n) N; Y

* j! }+ q4 ^' j. h; s]

; V# ?6 B- ?9 C  ^$ p: k4 W
0 y. e. {% ~* tend

2 n/ {7 Q  ~: l' Q7 t1 y, ]8 b
0 u& q) }+ m: W' {( n$ \to do-trust
+ P3 J1 M( v7 ]% Q  Vset trust-ok False2 W8 X/ |* k7 Y5 [
/ v  s9 o; }6 @* o6 k- E+ V: U, x9 [
, Q  \  Q; J1 P# V: `1 q" S; W
let max-trade-times 0
8 }" q( E, P! M/ e2 f) hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 u; [3 Q. Z( X7 C- Q3 Z. Hlet max-trade-money 0
# F( }5 W6 C; e$ b+ ]$ G8 Qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 g8 g8 q7 p0 K/ d) C3 ?  Q) V# a2 t. Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ P- H& ]/ m! N6 F# {! Z
3 ~9 y: C5 H# o/ d. |, S+ v

# E" X5 h5 y/ Fget-global-proportion
' _. S# ~& r# [; flet trust-value
( R* m$ Z0 i4 p5 M6 Plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
7 W7 m2 p& W' q
if(trust-value > trade-trust-value)1 u8 L# k& d0 {; v( G- J9 c; ~3 k
[set trust-ok true]. S2 e; ]: K7 e8 K
end
# Q1 B7 a0 j/ Y3 }" c( M' {. S3 _& e" M
to get-global-proportion8 z* R1 J+ B/ P. o4 r. J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 g8 k3 R- b6 P% V[set global-proportion 0]
( }  i+ u/ }* p. W) H0 M( ^; u8 P9 b[let i 0( }9 y" d# h- I; V  S
let sum-money 0
  b( T+ y, I  l# g; }while[ i < people]+ o: r: G6 k( n8 s% _
[3 g" w! v) c6 D! e- s" b# x: i. ?: e
if( length (item i
% ], y) e, n. ?, n[trade-record-all] of customer) > 3 )
9 [$ f+ ^" j6 \' R. ]( ~
[
1 U4 I7 o# |8 A) V4 G8 Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( V* p$ `2 d/ Z' S' B1 V2 a
]
6 l5 z" y; E0 w; p% e% l]3 o. u( u" ~* p" P% K, Y8 H$ _$ b; {8 F
let j 07 h8 g+ e9 [8 l- V* O4 A/ }0 a
let note 00 G( |/ l& M9 e# F* `
while[ j < people]0 Z$ R" x( [5 t. ^! k! @
[! P& T4 e; X* b; P" w* h
if( length (item i
) w4 k8 Z/ u% L8 m8 j) t; d[trade-record-all] of customer) > 3 )
) g0 H) x& p5 p0 _2 f' C: ^2 B' t
[
: S5 J7 \. X8 V7 k) _; Z& mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' P/ m8 F: R$ `! [' B[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' p. @; x  u2 N7 K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: T" n# t5 \! P9 ^. g]- N1 e5 d0 u; E; F; t
]
0 S$ X7 X6 d/ D, p; ~set global-proportion note
6 d0 {6 d) N4 D" O9 t]
- N/ l/ v& @2 M: K" F% ?3 Tend
; d  Q7 _0 D3 E" P) q9 c0 f! x
! H$ r2 ]7 j" T$ lto do-trade
6 e6 I4 J. V1 {% `3 `; j5 d5 G;;
这个过程实际上是给双方作出评价的过程  \8 m1 M' b5 I3 H) C/ B& Y2 t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 m: B, b& M& B  a9 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& L4 s  ~( V& `; o- b
set trade-record-current lput(timer) trade-record-current- C6 A  \8 f$ d, d4 G# ]+ R0 U
;;
评价时间. \' h2 S- _5 i7 w9 Z9 \
ask myself [
- Q; `) W! k6 }' F# z' gupdate-local-reputation0 _" V: L% N- Q4 B) J5 l
set trade-record-current lput([local-reputation] of myself) trade-record-current  O! l# h1 I& p
]
2 U6 M# f1 o! \4 G( K: qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 w3 P+ c8 k1 I/ n; v
;;
将此次交易的记录加入到trade-record-one
) Z% D' s: o# `6 P6 ?: ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* u- k3 E' A# x# ^let note (item 2 trade-record-current )
8 ]* _/ G6 ]6 H' r2 u1 [- Eset trade-record-current
( m/ n' J' p4 c(replace-item 2 trade-record-current (item 3 trade-record-current))
1 s& W) v1 F9 \: a7 L% m( w5 R7 ^) e
set trade-record-current
$ J: v  l$ S+ s5 g(replace-item 3 trade-record-current note)
* B8 ]# l' R) M$ r% x0 l: M" b% A  M8 V5 @
3 k* O( {* g) H/ }& l
ask customer [. T  I2 s. d% w0 P* @+ _
update-local-reputation. F" D0 N% l; F$ G
set trade-record-current
" `! |  ^. k) d1 F: R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- M2 H" I9 D* I, a8 }( Q9 u6 E. B8 ]# j
]. d8 |# z: z( |1 O' L& ]0 n/ [
% {1 L0 \" W. }" W. T

0 \( |) ?- B; a% [8 {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 y: K2 B/ W4 j: {; S' J0 K! {

( z, b" Q% O$ h- }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! D3 N' G9 v# z- Z1 _# ]& h1 l
;;
将此次交易的记录加入到customertrade-record-all0 |& @1 h% U+ F
end, f5 _2 w$ {& R7 q# z2 p: H4 w2 ~

: n0 f& M0 x$ g4 X; K0 dto update-local-reputation* N; A8 W* h3 M
set [trade-record-one-len] of myself length [trade-record-one] of myself( v( E8 e  ]: j

' s+ d: T, e7 v4 a2 ]7 \  N1 F9 D1 V5 C6 b
;;if [trade-record-one-len] of myself > 3
5 k* m$ g7 ~5 E: }$ d
update-neighbor-total0 q/ S) Y9 g! C8 i) t5 y1 O
;;
更新邻居节点的数目,在此进行
1 ]! C8 r! W; D' R8 tlet i 3/ {3 U. c3 V! Y: x% p# Q9 t
let sum-time 0* x+ z* w$ q2 ], L, |
while[i < [trade-record-one-len] of myself]
: i* n% j4 V- c[
8 d% X: E3 j; s6 H% b7 v  }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 I' B9 R5 ^; aset i8 a  Z2 m1 J6 E; z2 {
( i + 1)

8 }# k  Z0 v4 Z0 D]
8 B: A, ]7 D1 u/ K; n' `9 Y, ]let j 3! F2 v& x& u# K- F4 [3 M
let sum-money 0
1 D6 h. h3 O# M' ^8 e* n# lwhile[j < [trade-record-one-len] of myself]
' c) }1 }* x$ T[
: V# w0 p9 Z# x: R1 kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 P3 Q$ X3 O/ z/ oset j
0 A+ ]8 K+ v2 h' W8 x  ~/ N( u( j + 1)
2 I8 m% }7 e% ^  X" j) C# ?
]" g2 d3 E% r/ H" P5 M; ?( }/ C
let k 3
# f% A; Y5 A- K, |let power 0+ e0 C6 k5 `! w
let local 0
! t: {1 r, `0 @& {1 S6 V+ [while [k <[trade-record-one-len] of myself]
7 X; W6 }2 |4 @- U# i[
- C9 X# c' @4 ]$ Wset 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) % p# ]; O7 P3 x) P0 W6 S
set k (k + 1)
! M, m6 K6 B1 W; D$ X3 a$ |$ Y" @( i]4 \/ n0 Y4 f- m4 N
set [local-reputation] of myself (local)  H( b( w6 x9 X9 `( o! E
end6 ]8 A  |  ?0 t( c

$ f, C& D, T( c3 |' I3 `to update-neighbor-total& a7 m- k# }9 V9 C; I' |
3 S4 K9 h& f( L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# }, _( E0 `, D! J$ o

; R1 U& k- a% }/ c5 ]

+ \1 e4 ^4 k! `) s3 s0 ?end; {2 w# R4 B" e

& j% a7 k9 s& D: C5 @+ j/ Kto update-credibility-ijl
4 [, x; T( i3 N. `5 X% e/ Q* F7 c/ A6 {. _2 T0 n& l5 ^
;;
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。
3 p1 c% v1 A* ^let l 0
0 {3 P8 ?+ w  F' F3 g  x4 p5 F( fwhile[ l < people ]6 v8 I; j- X6 ?$ W
;;
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& d/ }5 Q5 o$ D
[
% j+ K6 E% w/ c/ B2 Flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& `8 o- U0 P4 ?# [' G' vif (trade-record-one-j-l-len > 3)
2 M/ ~1 }9 o% j5 t0 R! E5 w( A[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" v4 A# |+ I* p; d* @( `
let i 3
0 o1 t% Q. t9 B' r7 d, P" N7 nlet sum-time 0
: u- L+ p. K+ D4 T* t2 \. Xwhile[i < trade-record-one-len]0 m2 m1 ~! ?' [0 z! r
[- D! m0 V- R  c% {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! Q2 X( N4 O* o/ m& l5 vset i
  t* f' \+ O: y( i + 1)
' b9 D  \& f5 ]  k' N5 \5 Q3 J  {1 B
]
1 n* t+ U" R4 d  K9 ^) x  elet credibility-i-j-l 0
& C4 @: v# T% D5 B3 y;;i
评价(jjl的评价)7 q  F$ a6 {( D- B+ |9 p& v
let j 3
! X1 }+ J, W# @7 Wlet k 43 d5 U$ M. `9 c6 j1 U
while[j < trade-record-one-len]* M+ k( I3 p4 f6 I9 `) R; p! W
[
4 x5 z# |# V( X8 X3 g" j( ?3 R$ 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
' ~! R4 v7 d0 ?5 a+ m1 ]( x% O  uset 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)
3 }3 o3 c" _" P* C7 _, \- Oset j' p- W  u- W/ R. G- V0 f
( j + 1)
+ o- f6 X) A# t0 T
]0 R# D# {1 v/ H
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 ))
: O2 W# q& c( f& j! x  B
0 v% R. v7 m# {- N
' R+ J! u) H. n' E) `1 ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ |. u( }4 j) c7 Y3 }& T6 }0 }5 t
;;
及时更新il的评价质量的评价
  J$ F. F4 W' R; D+ x9 Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. ~- r$ ^8 L- W0 s4 I2 U  ^set l (l + 1)) Q4 y* j% t' q' h* C  Y
]; r6 c' z& f$ R( E9 v- x3 k
end
  Z* F! o( O+ z) B8 x; S+ p
+ D2 B9 z( `9 Eto update-credibility-list& V1 ]7 o' G3 M) G4 ~+ B+ n1 r
let i 04 w8 B  r% {+ m8 ~, L
while[i < people]2 D- K9 o: O2 s" h) g
[
- C! t; ~% m* ?/ Plet j 0: B' M( t! q$ ^6 M& J. t8 S
let note 03 v4 k( z+ i/ {* t: {% g
let k 08 F$ A9 J4 A+ s* i1 ?! X3 q8 `
;;
计作出过评价的邻居节点的数目" W+ W' g9 S" X" s2 E
while[j < people]2 I8 U( v. e& d8 G6 ]1 a% ~9 C
[
5 a! ^1 ]. D: ^  Sif (item j( [credibility] of turtle (i + 1)) != -1)4 b9 n' d4 S+ c3 b: K
;;
判断是否给本turtle的评价质量做出过评价的节点  H# N0 @( I9 {1 R8 ~
[set note (note + item j ([credibility]of turtle (i + 1)))
4 V9 @7 X& A# V! u* b- S;;*(exp (-(people - 2)))/(people - 2))]

. N2 F) x8 o: p, Jset k (k + 1)
, i3 T$ y% H8 L* J# p7 t]
( @9 c: L* X: u7 ?6 P3 Oset j (j + 1): }& {+ o* X4 ^" @6 t
]
1 G$ ]6 N* T: {$ zset note (note *(exp (- (1 / k)))/ k)6 w% g1 X( v( i0 ~  U" q+ G
set credibility-list (replace-item i credibility-list note)$ n! P( D, `2 L" X& ?# U
set i (i + 1)
$ M& o& @* u% p. t, B6 Y  y0 c3 ]]
) Y$ {1 O; k  W5 Z" A  j9 j+ `end5 N' `3 C- m  u% s: S
  b* b6 N% g' `) ^8 C
to update-global-reputation-list: W  H) c  s0 p, F
let j 0
9 [/ ^  W3 A! F5 d1 |" C1 Pwhile[j < people]' ^1 o* z7 }/ r
[+ g# `( a! z0 u& {
let new 0
9 E+ N; p2 b/ _;;
暂存新的一个全局声誉
: L6 F: T. r9 Q: B3 Q, \let i 0
3 c+ s: K$ p: r% Q' Xlet sum-money 0; U: E! A- [) A
let credibility-money 0
8 |3 J* k6 J- \( owhile [i < people]
* v% a1 J$ \/ z2 x[4 z0 a7 q9 r/ {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' l/ N( _- b# Y; @: m* g$ Qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ O# ?% e" v" c
set i (i + 1)1 w' d0 U2 e  v8 d2 i" R
]
1 e/ m9 J$ `( Q) W6 ~5 ?let k 0* m" i. C4 s9 X& f: T
let new1 00 [5 _/ M. f/ b2 L/ k
while [k < people]
; B/ l1 }! N6 p: z* R" J- P[+ @: ^3 @* f, A7 D5 ^8 s
set 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)
* E$ a. p$ H9 p6 L" C  e6 a# D' Fset k (k + 1)
( c8 k9 G( h0 [- k]
  o6 {- `$ }% S$ j, w( Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* P- d( D& \* G+ z+ Q' R' nset global-reputation-list (replace-item j global-reputation-list new)
" @# k8 N, A9 d2 a# u/ b& H0 T: u; `set j (j + 1)
8 C* o5 {' o! o" ]8 m7 d& S* _]
9 T3 b% e# D" d) d9 {end
$ z1 T5 T1 \2 v9 `
4 _0 l' X0 P' V% I3 S/ Z5 o
$ V6 O- H6 O9 T* h0 T, I. F: }( Q! F. e
to get-color
5 O3 ?! Z* Z$ Q* U4 a0 o5 f* O6 Q+ v8 i* E" l$ J+ Y
set color blue
/ e7 R% @' z5 m# ^8 m0 ~3 r
end; s/ @9 V* w9 q1 L: D
) e- G' F( F: p) |; e; Y
to poll-class! V6 A" H- |3 y
end- J+ C: w  L, ]  [4 T+ F8 x

; g$ X( d9 P( `to setup-plot19 h( \8 l9 j  l% o/ x; k
/ S- S: ~! G& a/ w1 K
set-current-plot "Trends-of-Local-reputation"
  l# M. h: [3 e% a5 N
: Z% ~# m+ E% Y$ S! s5 Z
set-plot-x-range 0 xmax

' ]( r% x9 [6 l! \5 L. P9 p$ p
9 Q6 w9 Z/ V# |( \2 t6 G- f$ Tset-plot-y-range 0.0 ymax
1 H8 J7 b$ \7 V5 I
end- n$ D# ^5 F5 R+ W# b
4 n' f; ~+ f# o2 V2 C1 b1 ]
to setup-plot29 {3 l+ h8 T- @& B2 C1 J$ J

/ w, a  }9 n2 s! R7 n7 ~9 yset-current-plot "Trends-of-global-reputation"
1 B. S, j% G: r" H( @
5 I3 e$ L- R9 }$ G$ z
set-plot-x-range 0 xmax
+ P6 j2 E3 z7 {9 K6 B* `7 h! L

& y7 j! h/ ~" D7 Wset-plot-y-range 0.0 ymax
- f% N0 F+ n9 C7 P- i
end
& U0 M1 K, t, {5 I2 y( q9 ]4 j9 ]+ w+ A) @/ Z. i
to setup-plot3
" f7 M+ }$ y8 L9 c+ }! N# x& `5 W- Z: t2 r0 o# a
set-current-plot "Trends-of-credibility"
: }  q- L5 N, y: d. \

" a" {5 m+ j! ?0 ^2 ]  W- p: uset-plot-x-range 0 xmax

1 W- f1 {$ F0 s7 O" J6 u8 [6 z) v* z  ]
set-plot-y-range 0.0 ymax
1 |2 C; G1 k; d$ D  ]: x2 \3 u7 k
end$ s5 N7 d6 j( C6 u) h5 y- R

  k6 C1 z0 X2 f5 l0 g5 mto do-plots
! ]/ Q8 }; |7 X. M* h" J- Kset-current-plot "Trends-of-Local-reputation"
: `4 q5 O; J2 E% ~; jset-current-plot-pen "Honest service"
5 p; d, Z5 q8 h, m. W$ N% @3 {end
  b/ u  \2 q$ C3 w5 `' N7 n  e
9 J( S: P' j6 v/ |: k$ y8 O[ 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 y8 N3 j! T4 `% U3 p% ~5 o
* J4 u# N% l0 [0 a6 [- 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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