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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:5 W* p& Q/ n( B5 ?; V
to do-business + p) A0 G1 n6 H, s) L, ~
rt random 360
0 u5 @# `# p! A6 h) g7 }5 e" { fd 1
- v$ O7 S9 o# g( c ifelse(other turtles-here != nobody)[7 }% k5 }( H- g! X8 o4 H$ p" J% ~4 e
   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." J& b* P( Q+ H' T) g, [" Y+ P* k6 x
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 C2 `# R' E: N) k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' o9 p* }+ B4 E  m; j; G   set [trade-record-one-len] of self length [trade-record-one] of self0 i2 W$ M! O  m& [; |
   set trade-record-current( list (timer) (random money-upper-limit))3 |" i. j: r6 N* P6 p5 m5 B) g
1 I: \3 D4 u8 y5 ~) w  d
问题的提示如下:; z' h  ]* r7 ~: g- o  E

9 K- ^# C3 o0 S; J) v8 b* d* Xerror while turtle 50 running OF in procedure DO-BUSINESS
/ P" _3 w" n! M% K! l' b: G  called by procedure GO$ k# l: R1 `# ^# U9 V/ m
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( C+ Z7 S( b4 V$ J/ x
(halted running of go)
+ _4 G. I, a, _
6 s/ A$ N' y* |' @0 V, V+ M% E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~~1 A2 c; y$ k6 K8 M5 V/ X% Z; i
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
1 w& L! K' Q+ m: B5 C2 |globals[
( B! c& L# v7 G8 Wxmax4 Q5 w+ r" [5 {, l
ymax
# u* p% W0 w( ~( \* D: fglobal-reputation-list* S4 e: f2 v5 o& E
; U1 V2 g# k1 _) q$ q% ~3 e/ f8 G
;;
每一个turtle的全局声誉都存在此LIST
2 n' j# U  W  p. C( J' v& G1 o) ocredibility-list
8 {3 x# }' K: R7 _' X* t  b5 P;;
每一个turtle的评价可信度
, K3 |# H* H) q5 B3 a- m( Chonest-service& g2 W. N( j  s6 I
unhonest-service0 ~  B+ \' V% G; z9 u
oscillation$ Y+ e5 S# F5 P& U9 I' m8 L- Q
rand-dynamic& s! `+ ?4 `0 z5 A
]" h6 a0 @; y( V4 B/ x- i
' z: n4 S9 `, x+ \
turtles-own[
, O  ]8 }/ g! Btrade-record-all
6 X' o7 R) h" X( a! ?;;a list of lists,
trade-record-one组成
9 q- g) m" J( B8 p9 Ttrade-record-one
* ~1 v3 L5 y1 ^* [4 p; P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 P, o# L( e: }$ `8 e9 @1 K9 u- w6 v, R0 q! L( G5 K
;;[
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]]
: [! F# j* ^; O' E' x( `1 jtrade-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]5 B" |( l( Q. P+ y  E8 A( B
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
/ e0 }# R- t1 T% o1 X0 Yneighbor-total3 M* K  N% r: P
;;
记录该turtle的邻居节点的数目  M5 G4 X$ M: _
trade-time
1 Q9 i5 Z1 U  B% c4 T/ k, B! C;;
当前发生交易的turtle的交易时间
1 m; t6 S7 a  _% q& s/ @appraise-give: K- F  g* K  E: V- s* |
;;
当前发生交易时给出的评价
$ [2 V3 P) p, X7 w6 l/ Oappraise-receive/ N/ u7 i8 h2 g0 Z, N# ]
;;
当前发生交易时收到的评价
, G) S) v  ^- t4 z- Kappraise-time
' }7 s4 b- K5 }) C;;
当前发生交易时的评价时间( F! u  ~" E6 B% J! N: Q+ z( G) A! w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' q$ s5 F/ e3 }& }
trade-times-total
5 y# ^1 J! l% A) A0 d;;
与当前turtle的交易总次数
: e4 ~1 q$ p# V. v& l2 Atrade-money-total$ D' ~1 [% R$ v$ I1 T
;;
与当前turtle的交易总金额( J& m. _  x4 h& O
local-reputation( d7 K. c- g1 o  \) ^7 i$ F! \
global-reputation( j* P: n/ h: h
credibility" v  T: J* b' t6 l3 b* P
;;
评价可信度,每次交易后都需要更新
: d) {. L6 j+ b0 Xcredibility-all
: n( V/ v7 m; V;;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
$ a) X2 W1 ~9 i5 [/ [7 ~( n5 ?4 P7 h+ `6 N$ F
;;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: h$ ^3 G) V  i7 I
credibility-one0 [& ^, R& c- _( V; o  I
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people/ x  W. v3 y. h5 s' v  O# B4 }% v
global-proportion
) ]- D* C+ K0 scustomer1 n7 t! j) [( p% p5 `* h
customer-no* h% F: I9 U4 s6 b
trust-ok$ M1 S% Q% v$ M6 I5 ?. N5 c
trade-record-one-len;;trade-record-one的长度1 ^7 y- ?7 ?) j! G) |
]
/ a; G/ N8 S2 ~' F8 F
" Z  s/ z7 C. C5 T9 }9 z# i;;setup procedure
( l' i/ S$ v. w( Y# N/ m1 t5 Y! {; ~* C
to setup
& [/ f' A, ~; b# o4 ^! V( W6 f+ x/ R9 A6 q- T
ca

; W/ v4 c' @0 j& x1 O8 ^6 e9 G4 b9 R0 T  l
initialize-settings

3 c" Y0 D3 K$ }) k; T( \, C  j; x7 P" p* N' G( ~
crt people [setup-turtles]
- H4 t, {3 w) ?3 `9 r! [
; C3 @3 ?! G2 @
reset-timer
. D) B0 z! g) A' p0 Y8 S* U7 r

% S6 A; ~7 z" s- s- K+ Y/ L* @poll-class
! U  h6 e9 Y$ ?! v0 O0 U% s. i

7 M- u+ x& n9 z6 ^( `1 _setup-plots

5 t8 @8 ^- y4 l/ I& q* {" K! R; s6 S2 q& D* X
do-plots

9 F4 ]3 W( ^' a4 o- x& X( Uend
1 t8 s% v/ r: c( E' U* w
! y" @$ a$ c5 N% {to initialize-settings" b; D, Y1 @0 c: ^; {
4 J+ g0 Q# T' d! {4 {
set global-reputation-list []
, v; H( ]. t8 S
5 @. g8 q! |3 k
set credibility-list n-values people [0.5]
& \, b) D. a5 S6 S  M1 s. d
6 T" ]9 k# ?9 D5 {
set honest-service 0

% w- P6 \9 \; o9 F1 a
2 P+ X" e; B+ w2 ^set unhonest-service 0

/ U. c5 G. k5 i: O; |( Y5 {) Z+ ]1 v' g% x
set oscillation 0
) }) }# C, W+ a% t) c8 ^" O
# D' ]! }+ s1 x+ f  _
set rand-dynamic 0

3 y. k9 I% }' k2 fend
$ d0 x. ]3 O8 T# ]4 B9 T" Q5 l6 ~
1 N- @, \- g" d2 v+ uto setup-turtles
; N: a  j% }6 t4 P0 nset shape "person"
$ ]2 z$ p/ q  B& D$ I' r/ ksetxy random-xcor random-ycor
4 s% R* a- Z8 q0 O& F3 ?6 W5 ]set trade-record-one []
7 q/ \  U' [# \, I. H  k  S
2 w+ o: z8 N9 Q9 J* W+ K8 [
set trade-record-all n-values people [(list (? + 1) 0 0)] + A9 T4 g- U- ^* f# b# a
4 k+ ~$ D$ w. p$ n7 A
set trade-record-current []
( Z* q. q5 s* H6 Yset credibility-receive []
& W" T2 v# a& }: ]# I( uset local-reputation 0.5/ k' k6 o) k0 b! n1 }3 s* A* B' I
set neighbor-total 0
+ `) L9 W1 X0 @% Z3 v* i0 Y5 ?set trade-times-total 0# H0 x! \! Q. y5 t1 V2 E
set trade-money-total 0) c9 F1 U4 X- x0 Y
set customer nobody
" q: A! `, \0 ]' _3 Z! Pset credibility-all n-values people [creat-credibility]
; f1 g0 _! p' Q* i# Q! |$ W' B4 Jset credibility n-values people [-1]4 a2 @; p$ O( X
get-color" h& Z: K0 {/ t# Q" {- U4 o/ [
6 C, c' I) `0 r
end
9 C! D/ b, l$ h' W% |  ?/ g8 F2 Z0 t( s5 o5 k/ {
to-report creat-credibility. ?. }2 `9 X. b/ m0 y- B
report n-values people [0.5]
( r  S- Z5 ]1 d0 K! Vend3 }& O+ |. Z3 }/ Y1 F% G  A9 Z
  Z6 u$ a! g9 }$ L% a$ z% a
to setup-plots7 \! ~& M- P6 e% K4 M1 \" {$ J

% f- }: ^9 g$ j$ i9 w4 [set xmax 30

  P- U. E( M& J5 I& w' v2 W
8 o' {. @$ q* Kset ymax 1.0

" j2 G+ v9 \1 G8 U0 E' D6 c) \8 k( R, F- ^* f: v- e
clear-all-plots
, F5 e' y& M# M6 N

: b/ l1 f. c' S( t6 k: Zsetup-plot1

0 {6 g: x. x/ |. B4 o8 p
# Z+ @$ o, l! ^setup-plot2

; s* Q; A+ z$ o) G8 n, s+ Z
* `5 t2 W6 e/ r0 J- n: m! asetup-plot3
! r& A, @7 g7 F  Y- r
end9 ?+ |0 `5 b4 q- K& k( U/ p
7 d# U$ p+ ^& d; Q* @
;;run time procedures2 g" E/ _; [- C
5 J4 V- B  E. S0 A, b
to go
: B1 ]+ l( j7 E7 m% w1 M# q! [0 x/ |8 Q+ K% J" q: y1 W
ask turtles [do-business]

4 Z# E3 F* z' L0 _3 f3 Vend2 j4 W' w0 x) k, e- W
* q: c6 n. i  B1 d
to do-business
/ I! u; v7 F$ W
; ~% X# [) V3 z: d/ I9 ~( w) e

8 C; U$ v1 ~1 {3 yrt random 360
% O, E6 n) K/ y/ S1 M; M( Y- W
; K) t, O, z3 a8 }" @: A
fd 1
6 E% I# D% s# H; v1 ?- N( F

! B' e8 I9 P. g$ cifelse(other turtles-here != nobody)[
# Z" p  z# n* D) A$ k5 E5 t

+ i0 R- T" ?/ U* W1 ~& iset customer one-of other turtles-here
% B! o7 m& c5 j/ M; N5 @

5 c- z/ N; }7 K; i8 A. ?) J7 E: n% A;; set [customer] of customer myself
5 D# d# o! O  ~# i  o

( O+ H+ I8 y2 {6 e- oset [trade-record-one] of self item (([who] of customer) - 1)
) v# n3 k/ _8 E! n5 ?[trade-record-all]of self" b( u! k6 f! }' M7 X2 x. i; H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- G" _7 d' I, m8 [% ~. h
: Q" L4 E$ t) ]. h( u( _' m  O& Sset [trade-record-one] of customer item (([who] of self) - 1)6 p0 G" H5 e2 u" J" ?) K6 p/ [
[trade-record-all]of customer

0 k: t3 z: v. \( ]( _. s; Q0 `5 L, t, H5 w. y! M8 L
set [trade-record-one-len] of self length [trade-record-one] of self
+ Y/ n- A+ E& }4 N# M$ D9 l

( ~8 i- p5 b3 I! \4 ^0 a. Oset trade-record-current( list (timer) (random money-upper-limit))
* O  X" g$ q0 t; h# s* |
, g+ \0 @% K# n4 s  r! o
ask self [do-trust]
* s  q+ I+ B! y" B; X( N;;
先求ij的信任度
7 ?  A$ Z; a8 E; H+ ]8 x6 w8 [# f" ~, R; q% \
if ([trust-ok] of self)* K  V9 i5 z) ^  L' L
;;
根据ij的信任度来决定是否与j进行交易[
. I; \+ ~" m2 E7 Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 o( E7 |& ?9 |) k9 I+ y

: ~  b) z8 P( h, O[
' ~2 U& c  O0 _9 O2 m( ]
+ L- p5 M$ f; l4 G& u0 V$ A5 }
do-trade

: _( k- M0 o1 k6 |& U6 S$ ]# z7 `% C( q6 A9 E/ p
update-credibility-ijl

7 R# z7 M5 g2 q, m/ t' [1 g1 ?
4 R) u7 H% l/ K0 P. |5 T! q7 Gupdate-credibility-list
9 w9 j0 [. p' I0 D& x$ U' r2 Z3 j

1 @# Z' r* s6 g7 N, x  V0 w
, m) s# ~4 Q7 n2 [  nupdate-global-reputation-list
7 w! Q& _) @7 ~1 m- Z( y

- R, ?( U0 s  opoll-class

5 I" r$ E6 F# `: ]) {3 B5 T# V' @+ w, n( c! i3 k( U
get-color
+ a# r8 z/ U2 b0 o

$ E* x  @2 o4 i2 M. ?; w]]
8 K( K. C/ t7 c: b9 _% X- S
% o& C2 N5 @' R3 G! _+ {8 f+ w;;
如果所得的信任度满足条件,则进行交易
% H, W% ^0 |9 i9 r
$ w" q* e: p7 W) [  \4 A[
0 R) O9 U4 D' ~+ A

8 F; d5 h* f2 o+ v8 ert random 360
* q; p! E, V' N& n/ f' W+ i0 [

# a1 i9 ^* B9 n  \% o) U/ ?fd 1
+ X! U, e9 u, L7 o4 v# U2 a
( Z: A6 z3 F! d: O: _( J; D5 w; j4 p
]

+ {5 J- a. v# a) [- N2 j' ^% e* a0 d9 E' q- ~/ F" w
end
; S( J1 a( l( [: ^* R) d* r# O) l
. u# ]; M& a* Z- y. A, ^! B
to do-trust
: S' _6 d: h# Rset trust-ok False; ^" k' M9 T% I8 e, a! @

& U" B0 l, `' A

# ?" T8 [( p7 a7 d$ F8 d2 {let max-trade-times 0* B- f  H  s4 Y! y3 H( Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 o* w; M( j  Y  g, T- R
let max-trade-money 0
* x% U) |/ {; yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 f( L9 ^; u# ]& A! p+ w; V( glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& J& p: ?2 A% l5 t5 R" K3 L5 ]' O/ _# a8 C0 S( i' D
& }  `; @* d0 i2 w
get-global-proportion0 A  n. S! A( o) ?) x
let trust-value: l' t& r5 r( h- T+ }
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)

& [. K6 Q! B0 T$ x: L. Dif(trust-value > trade-trust-value)
: u6 b3 {  ?; S2 d[set trust-ok true]
% p- T' B- K* L2 _, D" F1 P% }end
& Y; r& U5 n3 G* T  A, h3 [4 k; U9 n8 A$ z3 H
to get-global-proportion
3 @; Y3 u" D. h( ~7 W3 o' gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" S/ c7 U- d7 `4 w
[set global-proportion 0]
/ B' D9 v3 M3 @[let i 0
  W) J2 @6 r( _, glet sum-money 04 [) ]4 P; ~5 r! [8 V7 {+ S
while[ i < people]0 w$ l5 y- `& j! S- ]" C
[' X& {$ J9 i& `7 c+ H
if( length (item i
/ [, r: B0 C5 L: ?4 |& X4 f9 V( v[trade-record-all] of customer) > 3 )

! o3 f6 i. L, P& O5 r[) C0 Y3 a# w6 v) G' R1 i% P% Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* C8 w5 T. p4 s8 |]
. h8 G) B. A8 U. K/ g]0 W* W" R. E5 N$ L% b) B: L
let j 0
1 w% a$ Y4 E$ k: r# y, Slet note 0* K6 I/ G* q& ~! m  p
while[ j < people]8 @. u: X; i3 L3 X; q/ |7 Q  r' d
[
: N2 i: x% I! r: s7 Z  i& o( Kif( length (item i# h, f4 y/ }- F) x* P+ {) V  L
[trade-record-all] of customer) > 3 )

# _6 k6 ^! R3 f! g4 _1 B5 P[
% ?1 u( h; s% uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). h% ~# a, O! y+ \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% x; M" t# f7 a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* F7 g1 V' ]1 A; `/ ^
]
. q- h7 n4 f6 o* x  B9 Z]
( v5 `. V3 Z1 B9 L0 P; Yset global-proportion note
/ w1 _, L& C$ V1 s]
/ n1 J6 b8 V( |. W: F5 W, ?. }- Eend- r& ^0 v6 y* S$ `) V7 Y6 ?

1 k/ W( O* E6 m9 p6 fto do-trade
1 [, s/ ?1 `* ]/ [5 i;;
这个过程实际上是给双方作出评价的过程; I( F: g; v0 g4 b6 T% j. m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 [0 j8 J9 w0 I0 oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' F3 J# j) b% ]# h2 R' Nset trade-record-current lput(timer) trade-record-current& g  q2 y+ \* e
;;
评价时间% p; W& i$ k% @* J8 Z% `
ask myself [
6 S* k  l6 r9 D  B( Fupdate-local-reputation
% e. n8 n7 n% G- [0 Hset trade-record-current lput([local-reputation] of myself) trade-record-current& n% ]0 i5 j7 C* w! `0 \
]
2 t5 K, `7 m2 t6 Q& Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 `* e' o- L  x4 E2 s; N;;
将此次交易的记录加入到trade-record-one3 J6 Y# ^5 X* O3 t- A0 d" G2 ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 y* h; D% Q3 _! Hlet note (item 2 trade-record-current )& ?; `0 `2 y8 U# o
set trade-record-current
5 I5 T" q$ S! u3 L(replace-item 2 trade-record-current (item 3 trade-record-current))

" J# K" P5 q2 O) s8 G2 L! Wset trade-record-current6 o. x  q8 n9 b  I  m/ n
(replace-item 3 trade-record-current note)) i2 B5 y' L; L7 k# E0 `) V; R

+ A6 G: _, l1 }, w% O3 g
5 ?( w' d4 g0 J$ `
ask customer [. {6 R; O% c8 {/ {! G3 U# {
update-local-reputation
9 {8 m7 o2 ^7 Fset trade-record-current
$ a! K3 ]( l# i9 r  _; [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" c6 X; `% }1 P, E& [  }
]
4 _" w# Y# P. e+ Q- X. x9 U' C
" H7 V* A# G6 X2 N- I' ]
# ]& T0 O3 d, h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# J! M) E; }9 F" D6 k* N7 b
1 F. O, \1 O7 _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& M: g, m# V: d  y4 W;;
将此次交易的记录加入到customertrade-record-all- q7 E( j( f6 W
end6 q% d8 Z! P7 _* Y
+ o; l% j& n2 S; ?. l$ a7 ^: G% B
to update-local-reputation0 z6 x  i7 g5 I: s2 ]
set [trade-record-one-len] of myself length [trade-record-one] of myself
( i# ^0 H" i1 @) j9 ^2 C* r* \# X; h- j# f6 N

. R4 C0 O  @' Z# F4 D" |" X  t;;if [trade-record-one-len] of myself > 3
1 ?8 O- h4 \7 v+ z2 w6 |
update-neighbor-total, L  s: t$ H5 o  ^) ]: {& q
;;
更新邻居节点的数目,在此进行
5 a1 }( n9 Q1 m2 H# B8 j8 alet i 38 j* ?& \! w, Q$ O. z8 x
let sum-time 0& n9 S3 }4 b! a0 c8 \2 X/ o3 R$ N
while[i < [trade-record-one-len] of myself]" @" }& l( K5 q1 u+ D  O+ A9 c
[
9 p* S$ c4 ^5 u, e5 P. s4 sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). g8 C5 j. B( u- P
set i  R4 i/ i+ k. w6 [( |* i3 ]6 U
( i + 1)
0 `0 X  c& F' v
]
9 n5 c& c# g7 C1 k0 e9 ?) Nlet j 3* v+ ]& N5 p7 j& _5 c
let sum-money 0' s7 w% u8 Z# J' x- J
while[j < [trade-record-one-len] of myself]: j' e% L0 `7 k* ^+ l
[
6 Y# d0 b, T% r7 Qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! E; {) W  j- j8 Z' t/ Y* kset j
: ~& G1 s# ]6 T1 ^7 g6 ^( j + 1)

+ ]) {. w. ^. [. X5 K+ V]
3 V* E; v7 a' u+ i0 ^3 r1 Q; Rlet k 34 @2 Z! S( C3 z
let power 0
. S9 [) _# a/ p' c* Mlet local 0
6 V1 }. ?  b5 J5 b; Hwhile [k <[trade-record-one-len] of myself]$ j( L. Y! j3 E& ]/ F: o/ Q( K
[
0 [0 P2 {2 @3 y" I0 Lset 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) - [# U( \: x& h; L
set k (k + 1)
4 P/ s- I# q* y$ M]- L3 @% d/ L: R4 e5 i
set [local-reputation] of myself (local)
( k1 h# [# C' g" f, q8 Nend* h" `; I5 N5 H
0 L1 W4 h) l/ [5 L! Z* _' J
to update-neighbor-total; \5 m; k0 }/ M# N

, X$ X' [! N$ x; [; t* K, ~7 fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ o# v" U: u( @6 G, C( Q' k' l$ y( V
/ h& X$ M' J/ A/ s9 G) ?

  L) i3 z8 n  s( D# [- ?' |: send5 u. K* B3 j+ L, W0 ]

& J! g1 ~5 _. s, R+ K# hto update-credibility-ijl 6 b6 `$ h6 s, Z* Y

: C0 Y6 b5 _+ j. o; \& G;;
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。9 i, S4 g( G% ]
let l 0
0 a% W( ]9 e" B6 W. p+ gwhile[ l < people ]
( M2 \/ o1 r' d;;
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
/ c, ^* j9 u8 ?" Q[" `: ]4 _2 Q4 W! {1 Q+ G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' y! H' Z  Q: Cif (trade-record-one-j-l-len > 3)
8 _5 A3 O; @. 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" d& R! F0 _& ?3 X
let i 3
( H5 `$ |5 D% y* u: Elet sum-time 0
8 \! N& q4 m. p& }while[i < trade-record-one-len]; I4 C. |: `( {/ x
[
: k3 ]! o2 _7 b# n* S. jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! P, g& |" o' v" e% Q6 m
set i& k4 D0 X: D% P& O6 m' {
( i + 1)
3 \  t" e6 R/ p6 X0 U0 p% I- N# |
]! }1 v, K* E2 p2 @, I  t
let credibility-i-j-l 0
. Q' @) c# E3 p, Q;;i
评价(jjl的评价)
- C" u+ A, [) H. _let j 3# T9 j* ?$ {* G  a+ y) H& t' Q
let k 4
+ |4 j. r& |/ O& f& X3 ywhile[j < trade-record-one-len]
6 [+ g" P# _- B2 W% M[# Q% t9 m6 V$ G: ^+ ~: ^) f
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
; R2 P5 p) Q) ~+ a7 I" ~% oset 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 {0 T, i& F, }- J
set j
  p9 q) t. U1 X( j + 1)

2 {" x! n/ d4 C]
* S0 T3 ^9 M! O- Xset [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 ))
9 X4 D3 l2 G' v5 H
# X* w' x( v0 V6 l8 J% p

& E8 y$ I6 H9 e0 L* j7 S, blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) [, [7 q4 E0 {' z
;;
及时更新il的评价质量的评价
' g% f6 ?/ G3 k9 `' `& Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 p; y% f1 S5 Bset l (l + 1)
! o& y/ ?1 X+ u0 v7 m7 P]6 y. e- {. P9 E2 l# G. V, s/ I
end
/ l0 z% r  N9 Y. \+ y. t  I3 s2 L9 N& v; y
to update-credibility-list
$ |" ^$ R2 \0 [# y' f; Qlet i 0
: H7 k: U2 r, q7 Fwhile[i < people]
. n7 |8 v4 T  J$ f[
* b. v* ^+ V2 Y( Z4 l9 ^let j 0
7 a6 K1 _* I& m" Clet note 0
: `/ |8 h& o5 t( c: m% B! Nlet k 0
) v: l' X. v/ y6 c- n' y$ r1 Z;;
计作出过评价的邻居节点的数目5 V' w/ X1 |/ M* e) N8 p! ]/ l
while[j < people]+ ?8 T& Y* C8 q! Z& |, [. l* x
[
  |. M9 [( o' J0 ~5 O9 fif (item j( [credibility] of turtle (i + 1)) != -1)4 K% L2 Z% L& J( t' d1 F
;;
判断是否给本turtle的评价质量做出过评价的节点  m, q5 Q9 p, @0 l6 _8 p
[set note (note + item j ([credibility]of turtle (i + 1)))
1 `5 S; u6 a) j, U; S* p8 n5 B3 H! L;;*(exp (-(people - 2)))/(people - 2))]
' ?# n4 ~9 i0 E% D
set k (k + 1): H! K/ V; J1 d3 a$ E7 o* U' _; C
]" b7 g# ]% Q6 V
set j (j + 1)
3 v- _& G% o9 B' M5 G; b]
' q& N* X& M% m* l# V! Jset note (note *(exp (- (1 / k)))/ k)
5 r, [8 C3 i$ `1 R0 uset credibility-list (replace-item i credibility-list note)
+ _3 A; L% N% G5 Z9 Y6 A7 ?set i (i + 1)
7 w+ |" W- G. O]
6 T8 J) c" A5 |end
) k) }7 W* t/ O' _" |  C$ n; k& g7 |: m
to update-global-reputation-list4 Z; r% ^7 W) C; A: A$ |" \
let j 0
  H( \! j# F& |7 [while[j < people]
5 N/ ]9 T& F- {( C4 ]1 V  r: i[
/ z% m$ c/ M+ S6 R- \; |( Llet new 0
! e# y# n' ?, {1 a! J;;
暂存新的一个全局声誉
/ ~# D1 D, A2 n% E4 E& Q- Ulet i 0
, R) K. u* x& _# M7 nlet sum-money 06 i. @/ O7 k, r
let credibility-money 0( e! |5 D" \$ G8 {. e5 a3 m
while [i < people]3 T8 W) ^+ ?* |2 k) q5 e* g$ F
[: `5 f8 N& G9 L! K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 e. s0 s9 \) A, j8 n3 K8 Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% z! Q9 b" s' ^& Q0 x! Pset i (i + 1)% C# u/ b' n1 n
]6 _2 G. V% i% N/ u
let k 0+ G7 ?- r' |8 W# G4 R
let new1 0
+ y! v  ^. m9 Y4 vwhile [k < people]4 ~: n) ~6 o+ F" p' X  I
[
) a6 K  c- J& o2 }, Z* f. ]- ~: d0 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)8 ?' N1 G( P& _1 J# h: A  q
set k (k + 1)3 f. b: H' b3 c7 _
]
  U9 o/ _7 O' ]% h8 X6 J$ Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 ]* s# b8 m! [: mset global-reputation-list (replace-item j global-reputation-list new)
- n' z2 `9 x' `7 O2 f/ ^: ?set j (j + 1)
* p3 }) V" Z' W+ w9 P, {]
% @7 ~' ~% z$ y" k8 D" wend
5 ]7 ]5 t! a% a' q$ u, H
" J3 b+ E# I# Q, d; v' B% R6 \+ ~: X5 U
5 R1 G/ ^$ m  A) |1 p) y# w
to get-color( ~! ]* m/ f0 v' w' y0 a9 a

# D/ w8 c2 V$ s2 Z; Vset color blue
1 @4 S: `" T( t& }' a- L/ h
end
: [1 J4 A7 [2 R% n% |9 M
7 ]) K, o0 z' L0 Y8 j. hto poll-class
) n7 U4 D0 p) ~' Uend
! ]% P6 d2 ^7 ]+ Y4 a* y$ c5 V7 G# L4 }! Y" N* x$ n- P
to setup-plot1
8 G$ m' A4 r9 ?
( P& x6 N. L/ a  m4 P7 `% _set-current-plot "Trends-of-Local-reputation"

' t9 y/ T! _! ]6 e( z3 T, k" k2 _$ C4 N+ D: Y) g
set-plot-x-range 0 xmax
1 Y8 E. m& s6 m

7 N+ \6 K0 L/ p& Aset-plot-y-range 0.0 ymax
( i! J4 F0 ?( e, Y% e9 e" S
end! `! c5 \0 l3 g% d
* A1 M6 ^9 Z* X/ X
to setup-plot2% j4 z  v. W4 t  n& E
4 o5 f% O' |7 Q
set-current-plot "Trends-of-global-reputation"

% o$ G. |6 C- [. W8 @
  G3 C- S7 U% U2 b7 n& |set-plot-x-range 0 xmax

$ m7 l+ s' P# G+ o1 I) |
( }6 p  g/ I& t, |: B7 Y/ |  k4 Jset-plot-y-range 0.0 ymax

8 j3 g2 ^' D# x( _$ Tend
& r( d- _8 `2 u% Y) ^: a5 D. b+ h6 V. B
to setup-plot3
+ d# M: u# S% ?# M5 \  a0 }: W: e
* ^* \, Q3 ]/ v) w% v9 yset-current-plot "Trends-of-credibility"
1 K$ T( m3 V. k& J
" D& l6 i  R" l. ]2 u* D! {
set-plot-x-range 0 xmax
/ ]  d" \1 A7 ~5 l7 V: B
. T& w2 ~9 o- \! s
set-plot-y-range 0.0 ymax

; Z  f% H$ `# s3 X) fend
1 o% b  f# b* |: Y" C- }3 A
* t% s5 d- s$ f9 S- tto do-plots6 z, {- P+ G! e3 Y; F6 h
set-current-plot "Trends-of-Local-reputation"
* d! y% J2 w6 A. ^set-current-plot-pen "Honest service", S( Q8 ?+ f3 R5 ]  M# A; U: J
end
. _" i; U3 L5 K, h% ]
$ d$ P4 S: C: I4 x[ 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) I/ r8 f) E2 ?3 D) u0 |
8 T( u  k8 b. m5 |4 d" Z+ y5 \8 `  O3 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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