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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:
: M9 `/ S6 v7 g( e. t& cto do-business
: N8 S: |, \- ]2 V6 H0 w) x. W, n rt random 360# K9 G: B8 k: {, d& M8 h% Y
fd 18 ^( F; U: G1 F* D( G1 @
ifelse(other turtles-here != nobody)[4 F* {! }: k! s- b; @. t1 B
   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.
8 v+ V$ ~3 u/ f6 ~6 Q$ q3 h( ?. [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ c* j. ]$ ~* h3 n* W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* U8 A4 ^& D1 c4 P   set [trade-record-one-len] of self length [trade-record-one] of self
0 G- J& D1 D% \7 q/ @$ J4 j   set trade-record-current( list (timer) (random money-upper-limit))) ?# f. q4 w9 ~- k- |% d9 L
* L2 ~; f. z: Y
问题的提示如下:3 c) B* c0 K! p7 X- w, ]9 B6 ?
+ ^# O& X4 l9 u- O0 y# m
error while turtle 50 running OF in procedure DO-BUSINESS( P3 C3 [6 f1 B1 Q+ i
  called by procedure GO3 f$ q. W7 ~% G2 O& p' y# P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 @! ^! u9 f" f
(halted running of go)
, D3 Q  e6 I4 {0 d* R: \0 _% l9 X( E( V( _" [, 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~~
3 a9 i+ P6 s( {) G6 j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' \/ e2 C- V8 w: c8 b
globals[
6 E3 \) N7 Z* ^* D$ kxmax
8 Y+ r6 E8 z6 Z, Hymax
9 l% O) p. q$ O# Rglobal-reputation-list
& u9 p+ z  u- C# N3 n# P! b: k# p3 d6 Z& X, `6 ?: T+ ]4 n
;;
每一个turtle的全局声誉都存在此LIST; M, t5 d) c! p6 @8 X3 f
credibility-list
& ]! a* u. S, ?5 P& b; s/ \;;
每一个turtle的评价可信度
- D7 `5 W; s9 f2 P; Yhonest-service/ z# p! M3 Z* v- d. d- n
unhonest-service
7 B0 |1 `3 N3 x, Q# Y3 M/ e3 y; v( r' Aoscillation
/ W! B6 t& z! x* U  B4 G; w. s- Xrand-dynamic
0 E3 Q; w" q! ^8 f$ }]" R4 K: X' R) v

1 f3 y  c+ k# Q, rturtles-own[
; @& \4 S( _! e2 y% |) c, ?trade-record-all0 t: X( |0 G% Z" s( U; {
;;a list of lists,
trade-record-one组成
9 L5 }: c; w* H3 {" f8 W% ~9 otrade-record-one
- F; H3 M$ b/ _# k+ N3 N6 b;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( h' h& Y7 \7 U% ~! r, h
  v- m& P7 A4 h1 ?" z5 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]]
0 |' H. k9 x" Z8 M& etrade-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]
; Q! z3 F; |6 gcredibility-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$ ]+ h4 I; m; f# i; `% ~
neighbor-total- J0 k; m' f+ m5 M
;;
记录该turtle的邻居节点的数目$ O0 K5 e; i( V8 V% w( V
trade-time
! X: [- g! p# z. S1 O;;
当前发生交易的turtle的交易时间  M2 I3 k4 t- j" ?4 e- i
appraise-give9 x$ m' m- e3 W* ?; P7 S
;;
当前发生交易时给出的评价7 [* X3 D' d+ |( u8 S5 y2 h
appraise-receive
; |/ I, d  \/ A7 D; c5 h2 j) T;;
当前发生交易时收到的评价" N: l2 _+ S: x( e) T, F  l
appraise-time
) C" _/ O0 P2 _;;
当前发生交易时的评价时间) _* C/ g9 F4 @+ J: n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 k  s# u  |  b, i( C
trade-times-total4 b5 U% O5 f; @3 y0 z
;;
与当前turtle的交易总次数
) M; K9 _1 z/ R1 \; \trade-money-total
0 D3 x" ?6 _& ?;;
与当前turtle的交易总金额
. m2 t' s% d/ W# V( N8 J2 o5 M9 Y# elocal-reputation
2 r/ u! L$ m, X/ Sglobal-reputation
- H- D; V2 F5 u6 lcredibility
! b  m! r( b7 I# Z1 ^;;
评价可信度,每次交易后都需要更新4 D. N0 W$ l+ m$ [& |( |  d6 u; y
credibility-all7 Q: [0 T) h1 Q8 r7 ?
;;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
+ e: [2 f$ i7 w5 a' p# M
' G7 }8 Z# ^" a+ @0 Y;;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
5 h& }5 y; l" {7 B$ f" i% M% _credibility-one( h# |' V7 A& W& ~, ^6 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! e2 l& p( I& ]0 ?2 Qglobal-proportion
1 ]* x9 m) J& d3 p" |customer
0 A1 h% n& g+ [9 H9 Z( Zcustomer-no1 B: ^/ X* G3 m5 D6 f" G! y
trust-ok
: f, T4 k0 D, D5 otrade-record-one-len;;trade-record-one的长度
7 M' K3 U) X$ G1 A0 O7 S7 k]
( E2 b: @1 m3 ^& i. U6 v3 t9 w( [% i# B1 Y: A% ?3 V
;;setup procedure- [. i6 d8 r+ M1 O3 {. k

. L. G: V8 J$ e; L/ Lto setup3 v7 |; u5 l+ c/ T  Z: e( b" _' z
  {+ D' ^: `+ ]4 u) L
ca
& c: K8 H7 p/ S2 D+ ?+ x1 Q  s' ]

. P& ]' w& R# d. |" F" v8 jinitialize-settings

5 N3 T9 j0 d6 o2 L& R  R- C0 a/ L7 y1 @' N8 [! s
crt people [setup-turtles]
* ], O2 i6 _; G

+ ]) |" a3 D, q, i9 Kreset-timer
; q8 K* K$ n" L0 {. U
4 o0 I+ Z- ^; u
poll-class

- v9 w3 e3 \, @- D7 X% T$ u+ ?. B# H' ^( F2 A) e& Q
setup-plots

) A% I# I( l0 O$ b% L- c, ~! r. a+ L' _
do-plots

8 ?. D& A: g% v- fend8 t& n# l5 U6 I6 T
* s5 h, {- `$ x
to initialize-settings( e  E5 |5 ~7 j3 Q% Z' a1 }

7 c- g" r/ v. r; }& }# N( I! fset global-reputation-list []
( U8 P. n; i  @1 o; A% S

6 h. \; I% t7 ?: H% e- C; k9 hset credibility-list n-values people [0.5]

5 \4 d& I5 B; s% v) H0 S3 @/ ]/ L7 Y
set honest-service 0
$ \( D* a: m( }( g( r/ M# z% [, y
9 [9 d, `) k! q) w4 p( B* k
set unhonest-service 0
1 ~0 }1 g. b! h

# a7 m9 `" ^/ y# {8 bset oscillation 0
7 P$ i& o: t: _' @+ b
+ a# P# m% k8 e
set rand-dynamic 0
7 g+ L( o7 U2 u
end
" u  K$ h/ S$ Z" t
- }- h, ~  w: w, X: F$ Q  G  O, Z7 Lto setup-turtles
$ n  }' u% U9 V; V- gset shape "person"/ T2 O6 |. }% v" D
setxy random-xcor random-ycor
, N5 P. o4 n1 g6 ^3 I7 X; Cset trade-record-one []2 ~  _/ o7 J! \. o4 Y9 V4 S
) l% G$ E, Q1 `
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 n* ^- }4 }9 S* |. z/ \
: E) Y0 M  l9 L  D
set trade-record-current []
. O5 R/ {! C! T8 }$ ?1 Q8 `* Rset credibility-receive []
7 d. }8 l: o. o: yset local-reputation 0.5
3 G/ Z9 P2 }. m: j, H" H5 R* X$ Oset neighbor-total 0
0 [) u. B3 x' T/ |7 {. aset trade-times-total 0$ ?( b4 K6 I2 `4 F3 a9 r. f
set trade-money-total 0
* v; L4 x: o+ c+ |% r; Uset customer nobody9 l8 E% A; H6 `( u5 S
set credibility-all n-values people [creat-credibility]
) m! V/ J% G$ y9 y" A& Z8 Fset credibility n-values people [-1]
2 k+ Y+ w. C' hget-color
8 f$ F2 Z9 E, B8 g& L

7 l. b" q  E" h' ^- Z- }' i" x. Wend- X6 S; v* ~7 Z" S1 ^8 g5 a1 \4 X

! s4 }( d. t! m1 X; S/ @& Wto-report creat-credibility
5 z3 {) ~* E4 j# ?report n-values people [0.5]
5 o* f% `- m$ g1 S* Tend5 v% U( W8 X7 }  J! U% |3 U
% k6 T1 s+ J$ }' O! C9 S; J2 H
to setup-plots
" D9 |: v+ e9 T" U$ ~% d1 s
3 [. \" X: `9 O  e. \/ q/ ^1 g" Aset xmax 30
. l+ s# o. V4 b8 J% E5 K

! r0 {; }( s4 A3 Yset ymax 1.0

1 M, v- H) x4 s/ d( d$ A& w- n
0 s* i3 `* c$ f6 {* A+ z+ _! Uclear-all-plots
8 H. h( h% o7 y
$ [# K% R: D) o' b
setup-plot1
0 i  J/ G) Z; K) l% g. p( s- Y8 Q9 x

6 H4 L9 F6 C' |  W; qsetup-plot2

; a$ c9 W. Z! _& m2 n/ k6 k$ }
4 d- C0 Y2 d: O/ z( z: K; i& W3 d- g5 Lsetup-plot3

1 I2 B/ ~3 x* `' o' B" eend
# J, t& Y8 q/ ]& D* l: m2 g5 g3 w# P
;;run time procedures4 T0 _$ o' ~& J) Z6 f2 V; r

4 p( v& M$ f6 N- x5 g- @to go+ U$ b) u8 _! w& y

* h4 |, U! U9 ^  e7 jask turtles [do-business]

% }+ S  Z  b+ ?3 r& Y- D* hend+ m* i; Q) E& T* T
# W6 u) v! q# Q" Y$ D* d7 k8 n
to do-business
+ l* d# Z  k3 r

5 A3 v5 n. W, W. Q4 E+ L. |0 B' X' D* {, f  \
rt random 360

+ v  G4 G+ A/ m* d2 l2 \. {
/ f/ T- X' x9 h2 Qfd 1

; {% p( m& v" e- z" V/ |& ]
& ~4 e! U( ~9 |+ q' mifelse(other turtles-here != nobody)[

0 o: t% d/ \) l) r
6 h3 U1 j. J. g) m  E$ o. Zset customer one-of other turtles-here

& Q- z- c( O7 G8 C% ~
& Y& A  w+ x; d! ~;; set [customer] of customer myself

8 n0 Q0 j6 {3 Q' p! D; x! J! C$ I) C
set [trade-record-one] of self item (([who] of customer) - 1)
* b2 k7 }) P/ T1 T[trade-record-all]of self
9 W+ O% ]1 m' y0 E  s! {% ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ t% k1 z" ?, U* m; Z& h
. s' j* o  z% M  `% c+ o
set [trade-record-one] of customer item (([who] of self) - 1)
2 v5 }! ]8 a! H5 y$ O$ Z8 q[trade-record-all]of customer

9 d6 m% [! `: T+ ]
0 L# V6 i1 ?7 `, n* `6 hset [trade-record-one-len] of self length [trade-record-one] of self
) X5 P+ z! ~: J# [* p

8 p  j8 q! Y9 f: n% R- Kset trade-record-current( list (timer) (random money-upper-limit))

+ v: d- X* d* c* u, t* k: T6 w& ?" q9 O
ask self [do-trust]  [) o1 n% X; L, V& r
;;
先求ij的信任度
7 R; s& k1 t/ w; Q2 V, s
3 v- }. H7 j3 P8 s, [1 R" Zif ([trust-ok] of self)
6 b1 C7 p& H  a0 m- B; M;;
根据ij的信任度来决定是否与j进行交易[
. `& z" M# V* S( G* |/ eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. X3 h8 e+ m* B: z

9 i7 I0 w/ H$ g6 l[

2 \+ U; D. i! S& k
- S0 G- d( m. vdo-trade
2 n& l4 U: O9 @0 n5 ?. C: C
% p, j  K" O7 l/ L
update-credibility-ijl

: h$ d/ H$ C: e5 E8 l8 S' r  |' f9 ]% O0 y* n
update-credibility-list" P2 a. a6 }# q3 ~. [% d% h
$ D: X1 z0 R2 z% @% ?* z

) b8 y4 h# X% H. \( m$ E/ d% ^& `update-global-reputation-list

8 f6 S5 o3 m2 o) t1 d+ F. w; r: z7 g
poll-class
* R9 V1 n7 X9 \+ Z2 L& @5 E  F

7 T7 H$ p. X9 N5 G9 W$ M5 I0 v& Wget-color

" b6 Q2 N; u1 L7 }6 X4 g5 Z0 ~8 u5 U8 K% m% }
]]7 `. [9 A/ o, X4 z) T) j

3 u2 w4 ]) Q& S; D;;
如果所得的信任度满足条件,则进行交易
9 g7 S& L. G1 F: z4 ]8 R4 V
+ _# e% Y9 \6 d$ z[

' \# [/ y) M8 E4 R/ g' S- s5 U9 X, b4 u5 F6 W# b5 Q
rt random 360

" u( ^% l& e. p/ o# ]- R7 \& Q9 }
) U8 A- O: m# t- o9 b1 T. wfd 1

5 p0 f7 E6 z4 Z- H6 `$ y7 `+ \* l/ E* f: [5 s6 k1 e" X
]

" O3 ^: ]. ]) M* m& o, J% C
  u5 T& k4 H' l2 e& D: o1 Pend

& P- p! W! b& |  i6 r! P( ~0 D$ C( _7 r
to do-trust / j' z) ?% T6 p( H& V+ c8 ^7 c
set trust-ok False
4 t6 d! _# e2 [
" _* G; d& U9 R- b$ v

% j$ k$ d8 y) Y+ x& q( |; wlet max-trade-times 0
5 _+ ^  H" W8 z+ B! C* }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' O) k( w/ C) L4 r/ Mlet max-trade-money 09 ?5 h( W  o" v% r  M" n4 S3 z4 @9 l% m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% ~% a; l, K: ?) z, W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 D% v' R2 x, h2 l3 G% w8 A5 a1 o; f
5 h5 }0 W  i, J2 P% T) x$ E3 P
get-global-proportion
6 K9 e% J) b/ {, W& B4 Slet trust-value
0 L% T6 C- q; D' ?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)
& J0 L+ {* h' c) B
if(trust-value > trade-trust-value)
7 w! v5 v) T% k$ ?. E9 Z8 @; ^6 j[set trust-ok true]
! f' F3 m3 t$ n  U9 F% jend
* s1 b6 A8 _/ N# f- e
; b2 W4 v1 V4 U  Gto get-global-proportion7 d9 C- ]  C: `  T' m& k  s$ }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 }7 s$ E5 b! W7 z( ~" w9 @6 P[set global-proportion 0]
; P2 d/ M2 \" X  p5 R0 k4 Z+ w[let i 00 A& u2 ?3 F' Z- C$ [
let sum-money 0
; s4 }2 A0 ~  ^4 J5 Q; qwhile[ i < people]
/ |" J8 p- z1 m0 q' ^! C3 N[" C: c4 P" ]4 b5 b2 j% l3 R7 R+ j0 x1 P
if( length (item i
4 o% n3 c; L7 _: u4 W' S, G) w/ U[trade-record-all] of customer) > 3 )
) A; [( O3 ]: N% L
[
* ]: _& G8 G# jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! D" [% }$ h) w]
7 ^1 _. n/ k; e2 t! V]4 p' @) _. e9 W. C9 i7 C( j
let j 0: q  n1 ]% E4 ~/ w8 j) Z3 L
let note 0
1 T& Q9 Y7 l4 g) n1 v# owhile[ j < people]5 r0 z* y) V4 M. D' p
[
1 R: g/ F3 O# h# S* ?if( length (item i6 h1 B& C4 F$ p) z& D- J
[trade-record-all] of customer) > 3 )

7 C9 k! M4 V, M[, X$ Q9 A1 P! N0 a4 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ ~/ O2 _) y( ]/ a# p1 [/ H& j' {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 S3 {. n) d4 Y3 C% |) C* W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( m0 w$ G! V5 l* T3 M3 t& R]
# h. y. R* t: f" z, F; []
" l" R9 ]; J- e  v& {set global-proportion note
7 l$ A% Y1 f  w8 R, ^5 m]
/ [, l  l! h# B) U) F0 x' Q1 {& ~: ?. nend, z) U0 w- C% K

& X0 p$ j4 \; R: R7 P( _5 rto do-trade; o0 W7 N7 h& S. M0 X- H
;;
这个过程实际上是给双方作出评价的过程, H" T- k1 h% @! H* V3 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% L& I  H) C& S/ q. c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) j" v/ w, X3 cset trade-record-current lput(timer) trade-record-current
3 _- Y, w7 Y/ V4 E8 X, T0 q4 ~;;
评价时间! N, u& B) ^; m7 f$ d. G4 A
ask myself [
" {: l4 C! {9 j, M/ z  vupdate-local-reputation
$ y& y. e" n7 Wset trade-record-current lput([local-reputation] of myself) trade-record-current
: E( p$ ?! I% K3 @]
4 T2 c/ p3 S$ sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ R5 N! g4 U3 u' j; g
;;
将此次交易的记录加入到trade-record-one  Z( o- o( {$ Y# M
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% Q& }/ E: b  {# Q" ~0 q! y
let note (item 2 trade-record-current )
3 y2 g2 `0 R; n$ x2 i* s8 w3 X/ Xset trade-record-current
' S0 N9 s) k6 P- r) y1 a(replace-item 2 trade-record-current (item 3 trade-record-current))

" a7 C9 B& o6 Z( G; X8 oset trade-record-current/ O6 e& C+ i/ y. B) w4 B  z1 ?
(replace-item 3 trade-record-current note)
8 g, `4 Q* n* n7 v1 V
) y( W$ K% H8 ~  ^9 G3 F; R

9 q; f7 z$ h6 [' v, t& F: N# l+ Jask customer [
1 q" t# L* H! ?update-local-reputation
' g" a! L: b* G9 |/ bset trade-record-current4 }3 m, r0 G4 Z2 [% q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" `" s, w! h$ @% W& }4 c3 y
]
1 t* s# P7 J' K9 M. a1 z- s
, F2 |# V* D3 _! r$ s

4 `  @* P. j9 w3 h, rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ V# g7 w2 w/ b

+ q$ p  I! u/ m2 H% P2 Qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, |9 V3 }* k5 R$ @: b;;
将此次交易的记录加入到customertrade-record-all/ {6 v2 a. F! \# _* X
end
8 ^+ U) Z* i' C' p6 V. Q2 B! ]4 |2 d6 |1 D* h  X8 @, O% H: H' F
to update-local-reputation
0 b" h& G# S9 V4 g8 uset [trade-record-one-len] of myself length [trade-record-one] of myself$ D) o8 R& [/ i: c  [9 H! F
# k" p# Q+ ?0 ^
* H- C' U: t5 J
;;if [trade-record-one-len] of myself > 3
" Q9 C5 |. F" Q" p3 D! p
update-neighbor-total
3 K/ O8 @' `! a7 i; W;;
更新邻居节点的数目,在此进行3 h( m9 e4 K- @; w, r/ V
let i 3
$ D& \8 s4 i+ `1 u) b6 V/ F, Y. klet sum-time 06 L/ q' B5 X) ^8 y. N" v7 m
while[i < [trade-record-one-len] of myself]% W5 v2 |3 F( Q1 w4 k
[
* Z+ D  k9 j- t$ t+ ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ H1 l) g1 ?+ F8 T; Zset i
9 {! d* P9 Q/ m$ ]( i + 1)

  [0 g- C. c9 \3 k]
0 M; G9 Z  R* b( @$ N' I0 N  i+ llet j 3
2 X5 y) F. ]3 m6 ^7 p; U) Slet sum-money 0
! {% g) s, E) y  M  dwhile[j < [trade-record-one-len] of myself]( M9 h& F% g4 l4 z# ]. @
[- A/ |) |& A8 Q) H: A# n
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)
! W) @' V5 N5 L2 I' X# ]set j5 W5 l3 \2 O* W  n
( j + 1)
7 H8 {" ~/ S* c0 D# X* v$ b8 o
]
- G% \( w  I. Y) J' Z! G, tlet k 3$ u0 w# W9 s3 g% d& G
let power 0
1 v0 a" I' X5 h+ p8 W) |let local 05 u: `% ~% E, l1 P% K
while [k <[trade-record-one-len] of myself]
+ R' E& `+ ^8 k$ O3 |4 J[5 A* j) d- P; @2 Z1 }0 M& z
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)
1 P% f# f  O* H. uset k (k + 1)& @: q9 l: R0 a* G* {+ @
]1 w( w; m, D7 u  _+ x1 ~$ u; S
set [local-reputation] of myself (local)
( E# z0 U, p" z9 A+ m# Iend
1 Q- _  t1 g4 Z7 T3 K! W4 _! Q- l; p0 K& |; Z; c2 J7 b
to update-neighbor-total
) E1 d* i- ~" N. c* a  t, p
6 C* }% g0 r/ O; Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- R$ X. \3 h# w+ |1 g5 b1 j6 |7 I- ~) f9 [
' h- h3 `6 n* _1 E# w
end$ o8 p, T0 _( @; e

# ~) m1 Q2 M8 m# `  Xto update-credibility-ijl
& r) K5 e/ [& Y3 \$ Z5 Y* r% n2 [, x- J' w- Q
;;
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。
  ^: H0 O# M( I# f  M. ^( Olet l 0
3 z  ~4 H- p; x5 k0 G4 jwhile[ l < people ]
( R8 ]! n1 c- f# x1 t8 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. d7 I( L) ]6 @2 w
[! y4 Q& D" M; `7 B7 ?$ f0 m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ F% A# A0 M( G2 P0 q, o3 D
if (trade-record-one-j-l-len > 3)
: s, Z: Z; u4 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
; p& n& P( [2 B1 L  D( p8 y$ ^let i 3/ f) m" R$ w8 D) u3 t
let sum-time 0
3 W' y6 Q  _2 f" }* s- Owhile[i < trade-record-one-len]
; ?0 ^9 k! a) |' Q[
& C& S, U5 C1 K9 v4 C) S& z9 pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) c. H: y4 c7 N) }; I, d9 A# c
set i' g+ m# [* Z; U
( i + 1)
4 M- ~( ]4 `' r7 K8 I: g7 w. G+ d
]' o8 |/ W( J6 R8 t- k( }3 _% b! J3 `
let credibility-i-j-l 0
8 v/ {8 x. P( W* P& ^* m8 q;;i
评价(jjl的评价)
. I! R1 {. X8 J) h6 Dlet j 39 {5 p/ O5 W. A# o
let k 4
' R1 A3 q- l  ^1 ?! N7 p6 ~while[j < trade-record-one-len]
) I/ y. g  t/ \! x2 R[& \6 t) p" r2 z% {+ u+ n
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
: X& g7 z7 `& j! J, {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)1 y3 c( V+ i# N
set j) U: C6 c2 r" q- [* k) F# e
( j + 1)

2 J+ L0 D3 t$ G& e3 \]
% l2 V( C: O, Yset [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 ))
/ |3 q7 y1 K6 f; G; [/ k" m
6 ~' P$ V2 _$ e$ e5 r

% Q) Q4 q: l$ W. llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ ]! f3 n- V& k;;
及时更新il的评价质量的评价5 S3 p, T0 R, Z/ Z: j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ f' Z& x! Y8 L$ M* lset l (l + 1)
1 k# u1 S* p7 B9 r2 a8 P5 _]! l+ W" ~$ u/ x' y* F' H/ F& P% G
end
$ r" ^- \  a: {% T2 [. T& v9 Z8 t  ^7 q+ u0 n. c3 w" _
to update-credibility-list
0 h' c: a& o& h1 clet i 07 F! r: U% W% Y) R5 V9 h* t3 |
while[i < people]
1 z1 k( r0 ~# y  f0 {[
/ t3 q+ F! V9 e  P4 M) K; rlet j 0
/ a3 x' U+ L; @" s5 o) z+ }& h, Rlet note 00 F; \) b. C' ~9 C# Y$ b3 x
let k 03 G1 H# J, H0 Z5 O( [8 R3 O' E
;;
计作出过评价的邻居节点的数目- X3 L0 h3 `0 i6 X  S! \
while[j < people]
/ ^! b; V6 k- [* ?9 \  ^4 \[
7 f  F; v  q( x4 K8 K3 \6 Y+ bif (item j( [credibility] of turtle (i + 1)) != -1)
. J( u2 r$ j0 C5 I  G- P;;
判断是否给本turtle的评价质量做出过评价的节点
- j" j/ h* n% O4 L8 R[set note (note + item j ([credibility]of turtle (i + 1))), a! b# C9 c0 Z* O+ \: s; t
;;*(exp (-(people - 2)))/(people - 2))]
# Q; K5 x% \1 F& I4 v1 v, V( k
set k (k + 1)
2 ^" e$ V+ l9 J- d/ n7 b], y' Z/ c! z( _7 n( d* b$ U- j/ b
set j (j + 1)
. \$ h4 c8 D; u8 B]
& b' n0 u& ]! q' o4 N1 m0 L$ O, R" iset note (note *(exp (- (1 / k)))/ k)' d% O* }7 z3 |0 K
set credibility-list (replace-item i credibility-list note)
2 K6 K9 U  V" P8 g  S% t: S' W0 B4 Tset i (i + 1)' X7 Z  Q+ j) ?$ ?& O
]
2 b, q9 u3 A+ P+ I% @end. l( `1 K) ?8 P

$ E0 L' }0 V5 bto update-global-reputation-list
  ~5 v5 d& W) v+ y6 zlet j 0- w# D! M1 F( r" D. A
while[j < people]" L2 D/ @0 T. b
[2 I7 ]  w* p& H' B
let new 0
5 s: A4 W$ X" }& n! R( z5 W$ k;;
暂存新的一个全局声誉0 X3 T: J1 i# |& I! P, r5 `
let i 0+ Z. b5 w0 E4 M
let sum-money 0; [! F, H4 Y7 \3 f- {. ~; [
let credibility-money 0+ D6 o5 h8 d- Q
while [i < people]
7 B7 |/ ?$ F6 a- X  C' ~; Z[* S' ]+ B/ ?% o$ R; G* c: d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 ?7 X( p# U; e" wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) \5 u( j$ S# p+ z$ j8 e7 C1 |
set i (i + 1); d7 B7 s( n% x5 a/ f% t
]
) k/ h8 H( X% z6 B8 l7 e* Z$ i) Ilet k 0
9 [' d4 `. }8 ^2 alet new1 0
8 ]( F* F' x' p) Y3 Ywhile [k < people]
) P9 m8 `) W5 w  k. z[
0 B' [( l7 F3 z8 L+ mset 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)
5 w) b% Z* h  D$ ~* Rset k (k + 1)
7 m6 ?/ S9 M4 s]
" Z7 d0 n# c( A, P* Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! B1 b2 _* k4 Y1 Y
set global-reputation-list (replace-item j global-reputation-list new)
- c2 n; l* W/ U/ Aset j (j + 1), P" B& L4 V2 L4 c  w! @
]
5 ~# o' w! |" _6 X' h  V" uend+ ~& C' E* r. o# b" x# i- m

0 e6 S$ u. m! _+ I8 Z1 P+ K# g' ]' F! D8 D: S; k( u

$ C2 i) X( n0 c( _: ^, kto get-color
) C1 h4 M- A$ W
' G; ^0 w: Z0 G: \0 ^set color blue

7 }+ n9 g; a  B- `- O: \( `end  m* i# f7 W$ C

1 `) }( d& Z  x7 ^/ ]to poll-class
0 u' `1 Q( D- K6 I( ^; }end
4 G. C8 G1 a" X6 J; V  L* _" W' P, ]
to setup-plot1/ v5 i; C9 M) k/ A# t" O% M
' q* {( d4 \1 @5 {9 s% U1 u
set-current-plot "Trends-of-Local-reputation"

# B: m' _" [+ O
) b" b! m: E2 U9 Kset-plot-x-range 0 xmax

$ P8 o$ @7 c& f; p8 X6 t
/ P! b2 J5 S9 R& r7 U9 `" t; [: `set-plot-y-range 0.0 ymax

2 h+ b" ]: A* Zend
0 H+ |# K/ f/ a, t0 i" f/ y8 b, J7 s  T) A# S1 @. B
to setup-plot2
3 i3 N8 c% N/ T( |* s6 g2 G. `# @1 ^6 n7 {: l
set-current-plot "Trends-of-global-reputation"
" j2 T0 ^1 R0 q- R) P! o

5 s9 w$ g. L1 R2 c9 g. d: Lset-plot-x-range 0 xmax

5 q, \. m7 t5 M$ l- [# V0 T/ E/ w7 X' [% r
set-plot-y-range 0.0 ymax
: ]4 t9 v5 d6 R
end' d9 k6 J& L; z( J5 S

) D% d2 B& g4 A' V5 h$ a4 Nto setup-plot3( Y4 ]5 `% ~+ b% ~1 h3 j
9 T3 F  f4 f7 ~! ?' ~0 H
set-current-plot "Trends-of-credibility"

3 u9 w, H' h; V* j- F* _
; I4 n0 J, x* Q0 b% D. n$ ?set-plot-x-range 0 xmax
. z* V1 U  o# u7 |" d) j) `6 h

* Y6 r- R( H# Q' T# _set-plot-y-range 0.0 ymax
( x% ?7 O. b+ Q$ T
end
; C7 c. W! n/ x& E# N8 h( H7 y% b% n6 F6 Q3 c% w& Z5 A9 G4 Y
to do-plots
$ s/ \7 d9 j- sset-current-plot "Trends-of-Local-reputation"
  W* p5 \. W% r  _9 X  U( yset-current-plot-pen "Honest service"* ?' F% h) _6 Y4 }( Y
end
; d& {0 U1 k- n  M
+ J- X! u; O: |, P0 F0 K: w[ 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.
& J, [( V$ d- c- C. ?. |9 y/ E# k, _  X; z  s7 A
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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