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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:
) o0 g6 p' L; z- C+ U) T/ jto do-business * g* d0 e; W3 D
rt random 360" R' t# }; n" h8 _7 h
fd 1
* ~6 O, D1 n. y ifelse(other turtles-here != nobody)[
' M- y3 V9 c) M5 N1 ^: V9 H2 n   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.
) R: L6 c8 N% b% R, h7 v$ Z! I0 j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- W9 |: H/ L8 S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# ^7 ?8 V; M: K; T# k$ f$ G
   set [trade-record-one-len] of self length [trade-record-one] of self
4 ?6 ?& T- C5 z2 Y  y4 m   set trade-record-current( list (timer) (random money-upper-limit))5 U. W0 Y6 c- ~1 l# B  Q+ F
4 `! Y2 P7 V& u1 t9 e8 N
问题的提示如下:
) b1 J+ o) Y& C
! T% S: T& W$ w; qerror while turtle 50 running OF in procedure DO-BUSINESS. _$ ~6 h+ W6 u& `
  called by procedure GO
4 W, h. n3 v- V* N$ @, X2 w& GOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( U/ ]6 T" m3 C( u# \
(halted running of go)
! e7 c( H: x  t& p: `$ b' V! `: I3 o3 ~% K  e& m
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~~
& K8 y: |/ d% y: l$ ]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
! T, ?4 R4 _3 xglobals[, u# b. I. L- }5 F
xmax5 P. J3 l& D* }$ f7 g
ymax+ `) |. P; l( S9 V5 K
global-reputation-list8 s- Q1 Z/ W* ]7 K3 C1 t+ N

4 \9 {, i6 h; o9 r- {;;
每一个turtle的全局声誉都存在此LIST! B: D* G) K' H. y' h
credibility-list0 {% T9 P/ R  q, ~$ B8 a1 J/ I
;;
每一个turtle的评价可信度
, O8 x# Q1 q% j% T" t( E" xhonest-service
$ A+ j$ Z+ a, {; a( U7 o0 ]unhonest-service
! h6 {" \' {0 ^7 Y7 q1 Y' l4 Joscillation; @9 i: x5 b- G; M" C
rand-dynamic' [9 y4 q( Y7 a) @" x
]" z( B, {% w( S8 i. ^% g
4 _+ u. ?: I. F9 a  R) L
turtles-own[- p, c- d1 V* G! S8 @$ q
trade-record-all
! b7 f1 V. A. `' J, y$ H' S$ V' X;;a list of lists,
trade-record-one组成
$ z5 j% P2 i1 n2 N. g9 ctrade-record-one1 l& K7 u1 L% e% l9 A1 X
;;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 Q/ D4 M/ m$ g3 _! L6 N
, e* Z+ t. `7 U* O;;[
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]]
* c- \1 s  i8 ^, z7 [7 Strade-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]/ {1 n8 b$ K2 b5 H8 z& w
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
! t' j; h" q7 w2 _2 n1 Dneighbor-total9 K  h+ @' @/ P# @3 A! F
;;
记录该turtle的邻居节点的数目
2 N# B/ u, h1 @4 Ltrade-time8 ?9 r( m- b3 X+ H6 \- [3 m' x
;;
当前发生交易的turtle的交易时间
+ @+ }3 u% U: A! A; V0 t8 L' j- [appraise-give
% c/ ~; i1 {0 k7 k;;
当前发生交易时给出的评价7 R0 S' H7 L7 K2 j; a9 Z
appraise-receive. A& c- V& }/ v# T, |3 ]6 l
;;
当前发生交易时收到的评价
0 s$ |  _# H5 a9 P) R4 q$ }# mappraise-time
4 M) |9 x9 `2 A  v3 ?3 ]1 \;;
当前发生交易时的评价时间( g/ K4 R2 U. \# ]) Z& ?& @$ f( V$ v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  b( [* K- r  ~% v0 K
trade-times-total
  [0 b* X, p9 d4 T* m;;
与当前turtle的交易总次数
( Q" m  h7 [- Utrade-money-total
! C: m1 E5 n9 {& d;;
与当前turtle的交易总金额: p- [9 Y! s. ?9 [* X! v
local-reputation1 O- `! n& o$ Q# [. J
global-reputation
* y- E' Z: U2 W0 zcredibility
- }( L7 X$ o0 o( R- c: V8 V. [;;
评价可信度,每次交易后都需要更新& g; T; V" p+ r( x
credibility-all
' u: S! ?: V2 V6 n5 W+ E8 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
/ W1 X9 ^" R' v. H4 R8 C# y5 m$ i# P) l( g2 A) n
;;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0.56 P+ q: m, n; E
credibility-one) a" u6 r- i" A  t
;;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
! o1 R! v7 A! E8 `8 \) Eglobal-proportion/ N' l+ o5 q9 n0 \  f
customer
" f0 s3 ?' S* P  {4 o& \8 o6 Acustomer-no
2 ?  G; O5 P! C6 Q( Btrust-ok
& `0 q3 ~" Q6 n1 vtrade-record-one-len;;trade-record-one的长度
) G2 ^" m, G+ `! ^]- P/ C3 v% z/ \. l

; Z0 p" q" z; S% N$ b" m;;setup procedure
- w3 s, M! n; l( I# D- m. V, X- ~9 U3 p; W+ F
to setup0 Q- z6 v: ~7 A8 ^5 C

# d  K0 B2 |3 r: s: r+ |ca
7 H- D# |) N; k$ C
1 Y2 {9 ?! V3 N2 [. P
initialize-settings

  e& i7 @. N; w! c+ i+ i$ ~* ~1 l7 m# F2 I
crt people [setup-turtles]
& a3 I2 `6 y0 k! u/ h
4 Q' [% R( o3 n; J! t6 V5 @; x
reset-timer

' M& |+ g9 c- W6 P
2 y# q7 W2 ^' d0 n& P; L# wpoll-class
2 B! r* W: g9 V9 p8 H$ p/ e8 u

$ ?: U/ W7 A" o# m) n2 Y. Z. Ssetup-plots

) y) s, x" g, D8 e. E  }5 g7 d* T; y# q6 H. p5 T/ @
do-plots

" W/ g* G+ v& Aend- h; l" f3 J1 `5 u% w
, n& {# a) W# s. T# L8 X3 `0 L7 J& k
to initialize-settings
" f% x1 J3 n% B: J8 c* @; r; g
2 ?8 _$ [+ e4 v0 z6 rset global-reputation-list []

9 Q- `( f6 V& ~6 S# _' N( l( v, z! o4 w! M7 X  r* W- \+ ^
set credibility-list n-values people [0.5]

, l+ c0 B( i  y& t$ }+ l& M" Y$ W/ B# z# v
set honest-service 0

& R0 J# O$ q3 ^( k& c; f
3 ^% h) e1 u4 \' t( Y* ]* Hset unhonest-service 0

% ^  _3 S! `/ d. b: k. U2 M. V/ J# F% z, R* `2 G" }! M
set oscillation 0

8 B$ \8 y0 M3 l6 l8 O" L9 |' p. e
3 W- t# ]1 A; m& bset rand-dynamic 0

2 ~" J, L5 F2 C+ Nend
) v) x2 _6 y% t: J, M$ c* b
2 @* `6 E: \. {6 I- c8 n" z  _to setup-turtles ( e0 |" g* y1 s2 T4 A
set shape "person"# L3 T4 f) `. ?# r  c8 N, {; g
setxy random-xcor random-ycor
  V/ {  `* M5 n) ~+ P$ G' H9 ^4 z) cset trade-record-one []
& ?# O4 f9 _& X+ i  u, v
* T( s& u! r8 m/ }1 M
set trade-record-all n-values people [(list (? + 1) 0 0)]
  t/ h% \. E' ?1 {; }& G) Z' Q
# {5 C6 A& N) f& Z
set trade-record-current []3 @3 c9 G/ ^( G5 e$ V- j% j" E2 H
set credibility-receive []/ _3 I% `1 J/ ]- {6 Q& f
set local-reputation 0.5
0 X  R: S7 H* J' [3 Rset neighbor-total 0
) W1 S$ s: s0 p6 v0 |set trade-times-total 0- ~, \4 V+ v$ W, u1 o1 t! Z/ ~
set trade-money-total 07 ~6 {: _0 @  \
set customer nobody2 d9 j7 x% B( g# ~/ [
set credibility-all n-values people [creat-credibility]
. V% a7 n. [# U& Q$ O* Zset credibility n-values people [-1]
9 L3 E# i+ [2 d9 g' M9 Y+ Q4 z  uget-color
% @% m) E0 Y2 i6 i
4 |& F/ q% l* G7 u, H0 \
end
' ?: w% l' F+ d1 W
$ A9 K1 k. f* e: q$ c- ]4 x8 I- ^( eto-report creat-credibility
/ o* M8 j6 _' e" U3 U1 o$ }* g4 j1 n6 `report n-values people [0.5]
3 Y4 G$ b1 F0 r: z+ Xend
% {( E5 v! j" @3 t( m* f' R
3 C; H# r( q* ~& Z  H# j( W2 Z2 L( I! Gto setup-plots
- h1 K" X0 F" ?
5 r/ M8 w! l6 z+ l; f, A3 {set xmax 30

6 j( I0 p" L) E- U9 w# ~
9 G; X8 C3 a0 D8 z1 U" eset ymax 1.0
# H4 ~( ?- h  L8 \* {5 G

1 H# p5 H4 h* c; {) [" aclear-all-plots

9 L2 n. P8 |# t! ^# V6 ]- s
- ]: v9 X% X% ?3 fsetup-plot1

( Q' u! u' ~+ V" U# o
& I7 u  u8 H+ q. X$ I! Qsetup-plot2
% Z' M/ V( {% F+ V9 r& \* G
$ z7 v, X! R5 v* E
setup-plot3
( J! H+ i5 t: J( F4 r
end
9 O3 l, y6 z$ r, |
6 E; M- h& ~% K- F# k1 @$ ?;;run time procedures
# ^+ y3 x3 ?. e; M/ l
# k! z6 A6 S9 }6 y6 Ato go
: h3 w: {5 S2 j. U' h4 w* k1 W" D$ S2 X; Y" J; b" h2 c
ask turtles [do-business]

) C: n# Z# i6 [- L( I9 rend
1 Y' K; a+ |+ {/ w1 N
0 H# T. g/ M3 t2 k. Z5 p3 \+ wto do-business : R1 T8 ]2 y; k; l! q6 ~
  o" W. w% F% \5 W4 P
/ F' O! g+ U7 P" g
rt random 360

: I$ h" S# k0 C& p$ u, B
9 F2 {/ M) }0 i  V! x8 F! j9 T! afd 1
& a% P" [! M) r+ l2 ^: |
7 X2 C* s* r8 g" e
ifelse(other turtles-here != nobody)[
! t2 p# I0 D- v6 D8 B8 l+ O
  @, H6 @' R3 ]0 N; _  V/ \
set customer one-of other turtles-here

1 V( s/ |% {$ Y  F* Q, N' P% r% K% m$ s. A
;; set [customer] of customer myself

, \! w: h; l3 y' P+ z! k0 K" X1 ~/ K* \' l4 B( `
set [trade-record-one] of self item (([who] of customer) - 1)
9 p6 Q8 N: L0 N, k8 d) b[trade-record-all]of self
/ I: J7 ?$ u: m  x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 h/ c' z8 \% y0 ]' m

+ _7 I0 X/ z$ l: t* Hset [trade-record-one] of customer item (([who] of self) - 1)9 |! F& n0 k4 y' X9 F2 X
[trade-record-all]of customer
7 w5 Z# V7 h+ D2 L+ i9 n# K% q. ~
* l9 M- s0 j7 Y! e7 {
set [trade-record-one-len] of self length [trade-record-one] of self

& f6 J- _- Z( n- a/ J( Q8 u& B# O! k# m$ j
set trade-record-current( list (timer) (random money-upper-limit))
! Q+ K6 f" ^2 S) n6 A/ y
) m; T6 |" W: W/ i4 M, {
ask self [do-trust]9 g: b4 C7 S% Z9 z% U/ u" f
;;
先求ij的信任度
3 \+ x- }- ^) t: U- |' i/ O- u' H5 V  B5 o1 Z! }8 ~8 `' k
if ([trust-ok] of self)6 X8 s/ J; C+ `0 |4 h
;;
根据ij的信任度来决定是否与j进行交易[) G' k7 Y1 k% ~6 h" q3 a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 ]" B+ ?/ o. r2 A1 p
* f, z4 P" U) g* U  q# i! b/ d' L[
5 i* ~: k6 u8 b+ ~) T. a
; Q* n8 H  l: j9 k4 z) S# Z
do-trade
% F5 a. m2 t6 l0 L" E# P/ N

9 D' i& F1 u' t. h" I" W7 iupdate-credibility-ijl
( g. ]+ x9 q" `! {2 J. p) T3 C. V( f4 }

" C. {# a# ~0 r' ~" V" \1 fupdate-credibility-list$ q  b; [  R- w* f+ z
1 j1 i( c+ q# u& X/ b
+ L5 j  S( z% u7 o2 a! \& i1 L* z3 D
update-global-reputation-list
8 @* J: f7 I! a9 t& i5 `

$ o; E6 O8 T4 G6 F* C7 ^' L4 ypoll-class
/ X2 p% i/ t6 x/ H' r9 j6 `8 I

/ W! r9 _: i2 I0 ]get-color
3 {$ k( O( h5 q( i5 U

0 u( X& `9 n' C( |& W]]+ b' F9 z% ~( c+ w% V+ ]

- U" O& E/ X2 q- Q0 \5 x;;
如果所得的信任度满足条件,则进行交易4 k2 f, |& q  W+ m2 ?& {

5 n0 d9 H% G6 g/ g5 F[
' ^5 o9 N* @: p' L

4 Y) j" M) f; V: a' A! _rt random 360

' y& ^6 k$ R% f8 u
8 N7 s2 _% u/ {fd 1

5 U- S* I2 ?1 Z2 ]0 \2 G7 `+ r6 M
]
, `, [0 e" V5 J! v
4 q- e* l+ |- W5 [
end
7 @3 R) A: q1 h* E& `
9 d  ^& b% q( p( Z7 o0 R! b1 r
to do-trust
* }3 t6 k' K' O* ~2 xset trust-ok False
! O1 |# O: I9 _) c9 H  O& `' o8 }9 }# l% V& M) Z1 ^, m) L8 q
! h4 ~( H0 n5 S# v- y( Y7 m& B' n
let max-trade-times 0. a, {& U$ a. r( o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 K# d/ v! a2 D4 h7 ^/ m
let max-trade-money 03 b  M0 f1 T& d2 a3 ~# P2 G# Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ ~+ w6 C3 W( G4 nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 I& A# L$ v+ K* j; F0 t
9 ~+ {$ C7 B# s  m. p: @/ g

' n' X2 [; i$ T5 `4 e/ Yget-global-proportion
# I% {- K0 n. n3 }let trust-value) ^5 d* U6 w9 e% G3 W9 A. i" w
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)

  O4 m1 g" G3 [/ |( R1 Zif(trust-value > trade-trust-value)
6 m! F4 k. o' d0 W  s) s[set trust-ok true]
" y. O- ^9 f% ?% h' L4 nend6 Q3 Z1 N5 |5 R. \! b. g8 o8 J

7 ~0 ~  S- Z- p% M! d* qto get-global-proportion' C- A# Q& l4 B  {* i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  ~( r# z1 l- E" X2 L2 l
[set global-proportion 0]' t: K5 \: U6 b$ F
[let i 0
% V& b* T* t" R% u0 llet sum-money 0
8 `2 `$ O' O$ l, s" f' Ywhile[ i < people]
1 h6 G% H9 i7 F, V, c[3 t9 b3 ^/ J. g8 m4 \9 a2 E
if( length (item i
4 ~* V5 k  d4 J" F& I# O[trade-record-all] of customer) > 3 )
6 f2 A( W" l5 L- N- v& N0 \, r! |
[
) |8 ]* U) s8 O9 j* o! tset sum-money (sum-money + item 2(item i [trade-record-all] of myself)): e9 w  j4 q  H, x! G$ y
]( A7 A3 j, a& I7 H0 T2 U
]1 ], c8 q* `: P
let j 0- m! F/ |1 D7 U% \9 T
let note 0
( G  g$ m( Q/ b8 P' H& [+ ?while[ j < people]
6 w5 }9 {! k+ c' ]% |[6 X+ P8 O7 W6 O5 u' }" K  a3 [9 {
if( length (item i+ `9 f+ r: p* f  g! X
[trade-record-all] of customer) > 3 )

- ]  F$ j/ L5 p[
3 L+ y1 s! e" g0 K0 m: E. ]) Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  O, l4 f  i% d1 \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( v) q0 l* L9 Y% }$ L" F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ p* T. v* w/ M' v1 Q8 @6 G]
3 X- T& G; i$ e& h  T6 G]* A% G# H& z/ i% ?
set global-proportion note
9 v: l4 Q- t( o8 K( l2 }]1 h' }" ^8 N) }/ B4 ^9 f
end2 n) _" y- Z* C, P  m# w# ?: P
. G  h+ B. N( J# w2 O
to do-trade0 E) v' x. u4 l, R/ n. c! {
;;
这个过程实际上是给双方作出评价的过程
! \# g* @! W+ h) E. Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; Q8 D7 ]' [" a- b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, l2 g. G$ F/ K. P; ^3 E
set trade-record-current lput(timer) trade-record-current
% \0 `! @" }: l! `6 C5 R;;
评价时间
4 g! L9 S6 w% H5 \4 x' c6 k* Y( _4 gask myself [! e' X. i  ~3 D, }
update-local-reputation
4 p# M6 q) E/ U1 Y( L" l/ P! }# Nset trade-record-current lput([local-reputation] of myself) trade-record-current0 {+ u9 B8 o' C9 D
]6 N, u2 b( k! }3 l' @7 e! P) R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! m$ K7 a4 m4 _! g. _; Q1 L: W
;;
将此次交易的记录加入到trade-record-one8 B5 K  e9 Q( _6 c9 T# n" H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& t& U( `9 Z- q0 M- ?- i1 n3 A
let note (item 2 trade-record-current )9 w( Q- N, }. j  f- B5 U* S# x) N' q
set trade-record-current. V8 H8 @* q0 V
(replace-item 2 trade-record-current (item 3 trade-record-current))

" T. K0 D' T! R9 {5 p" B9 Dset trade-record-current
8 Y5 @: I0 Q9 P. }* _(replace-item 3 trade-record-current note)4 I4 b3 S# x5 a# L  l. C( l4 a0 G

& p3 B; m4 M/ t. d) ^8 _( ^

& k4 N5 ^& `( U9 nask customer [* y0 \' z- i. c1 G6 ]/ b
update-local-reputation' \  J" U' h/ z
set trade-record-current
; x  o+ |7 h$ s" j+ }! q% \+ |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! _* a1 E! y8 i9 _) o3 L- ~% T]
2 {! J  @5 J$ r" E4 \# |, z1 T- g$ E3 ^" I/ x2 i8 x5 A
0 O$ M# g/ k" _6 @# X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 e1 H: H- \+ E& Q6 Y
: W- k3 V7 p: j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 S' p/ z: S' ^1 `( e/ u+ {) m) P
;;
将此次交易的记录加入到customertrade-record-all/ S2 I- Z4 J  D% w$ F8 B
end6 }' v( t6 ]! v4 J
; z" x2 f. n& U) E% s
to update-local-reputation% b/ a) m4 i" s6 x. V6 K% _! Z
set [trade-record-one-len] of myself length [trade-record-one] of myself6 f( A2 p7 y! D: s" b$ E) `6 @) ~4 K

, q$ I# S# S; {5 X: b: y+ ?% e' }, C; d3 f+ t" S: w- K1 D
;;if [trade-record-one-len] of myself > 3

; L0 n: X5 T2 R! \2 \  [update-neighbor-total; z1 O2 y% k: ]  q% C' v" A( `: C6 _
;;
更新邻居节点的数目,在此进行/ m2 V6 @4 s2 W, X, j  O
let i 38 g, j% P8 z1 l  i. }
let sum-time 0! n) ?6 [' c1 t' A) A( g% R. g
while[i < [trade-record-one-len] of myself]
' `- N# B& A: E[
% y  f. c7 h/ V. N3 eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 H$ t, b$ T$ c5 k8 E' Uset i
3 s; k1 e9 x) e; P  [% \" S( i + 1)
0 O4 }# c  D/ \3 w
]' y6 ?, k  Q! N2 a9 n+ m  s
let j 3
9 n4 r- r/ g6 b; g; ?& }let sum-money 0
0 I' C* n" X  V# I5 `: twhile[j < [trade-record-one-len] of myself]
- |1 O. L( j" c[" a7 F( Y2 m$ [! |+ j; B
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)
% S6 S0 h, P( I& b9 o/ K: @set j
# _6 p' _7 d& V) J8 H( j + 1)
4 r9 e1 z5 c, n% h
]
* v  @4 i  U4 \6 M7 c+ ]- Jlet k 3: |- r2 {3 `& L% ]( }
let power 0
* F) s7 B2 S* |# V/ @: N" y* elet local 0
1 I* \3 M" R! p) u9 l4 Twhile [k <[trade-record-one-len] of myself]- @! \8 K. p8 \
[5 Z# g0 Z: M6 M/ ?9 S: _6 H+ o
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) % S* Y5 r; w" M2 m) r
set k (k + 1)( \# D; i9 A+ Z  f
]
- L! g- E2 x, H  u" [9 sset [local-reputation] of myself (local), U: D: Q; l  C& `0 H! h% g
end
6 G& ]4 ^. v; e. d, X4 l8 O: u0 l5 ~; p1 o! W
to update-neighbor-total
$ q; j; ?- x* u( E1 L
9 a/ b% f" g* [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' ^$ m2 w6 ]* k' M( H1 y
4 v8 R9 E$ U0 [. r7 {9 v

! x' P1 ]/ e1 j7 iend. w6 R1 N' o0 ]! }
1 G+ P. n6 k+ B/ e4 z4 v5 T4 M: q
to update-credibility-ijl * X- M* n2 ]0 L& z* Q4 t7 ?* D" K

  }: Z2 [4 f* N% r6 s+ H! P;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。3 ~0 J) u, V+ ~
let l 01 E6 h+ V$ m. x  k. a
while[ l < people ]0 L5 o: w( M2 A5 a
;;
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5 M3 V( @9 F2 A, w! K
[
6 e! O" e: V% V; }# [4 L/ y0 _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% r1 u/ t, T+ a) r' M
if (trade-record-one-j-l-len > 3)
# {* R) K/ d7 b) M[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/ s1 Q8 }# j* i) u
let i 3
0 Y+ b1 ]# @; n6 Clet sum-time 06 p( m5 k( h4 ^" a1 ?; ]
while[i < trade-record-one-len]
0 T8 u6 k* f+ V$ @. d[6 }. |# b; r% o% W" ~, r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 B1 D8 b: U) P. O, _$ r  \
set i
$ }+ Y2 C* y4 _1 a: k- ~" `( i + 1)

; Y3 d5 s4 q) T" B: y]9 r4 q/ j, h6 E! ]- \0 g. t: x
let credibility-i-j-l 0
1 Z$ i) n4 c1 }3 v& ];;i
评价(jjl的评价)
' `# n+ I! |( t! b* |8 {let j 3
5 @, Z9 G1 O" P" [- y6 glet k 4
1 E! e3 p9 L9 Q8 O4 s) b3 F0 w6 M+ Wwhile[j < trade-record-one-len]/ E. ?! ~3 M  S4 p% _
[( W2 f$ I/ V8 \8 z& d* |
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
, P* n  k1 e. Mset 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)
- F7 A; \+ f! [8 h  n* r! G; G5 |set j
/ Y: Q( Z5 s! `- a! h! i* V& M( j + 1)

1 D/ C& ^  V6 g1 g7 `% E1 B+ T]+ a* u) }* w' Z! c2 q! 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 ))
' F7 I/ _" t- ]% f: G( X7 |) q& J: E* F( i* R

  Z. F# o7 q- j6 Plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 B2 a% T9 `) ~3 W' v;;
及时更新il的评价质量的评价" U3 B+ P5 t) F- K; _9 \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 ~) p) D& o9 }) l7 ]$ \5 B, Z2 Z
set l (l + 1)
7 [7 z6 r# I1 e6 T* E]
. m3 n/ j0 D7 qend
0 B$ H8 ]" A* O% Z9 e, l1 p1 |6 N+ ^7 R' e! e4 l
to update-credibility-list
4 v0 C& [8 ?+ g; F* T- n1 Xlet i 0
! V; u" q0 D$ B# n5 _% J' S: @while[i < people]& X; r/ ?- k% W9 ~# n* @
[% y2 t, Y% y" q- P4 i
let j 0
2 R& r) w* h( S. `- a/ j- Wlet note 0
' I# y$ D4 [  slet k 0
. R# C0 j2 w7 A* s1 o5 R4 S- O;;
计作出过评价的邻居节点的数目+ _- c, p4 Y2 L# j0 k
while[j < people]
- k4 e3 D9 r2 _& h/ ?# V0 f[
7 v: \" C! P$ O  P+ d+ }if (item j( [credibility] of turtle (i + 1)) != -1)
+ L1 T3 B9 z& X( U6 m0 J' C;;
判断是否给本turtle的评价质量做出过评价的节点
$ E% _2 V+ ]* A3 w+ R! K! D7 C[set note (note + item j ([credibility]of turtle (i + 1))). y6 g1 z# G7 `" w# R1 [5 {
;;*(exp (-(people - 2)))/(people - 2))]
' S% ^+ l' Y. f, ]1 @( n6 u( {
set k (k + 1)
9 @: \! \, M' m+ E. r2 [6 e]
/ Y2 w  h; T; a3 @set j (j + 1)
, y: I* G2 A7 L9 u]
9 w) i5 L% ~' N* G8 u- a6 @set note (note *(exp (- (1 / k)))/ k)
" L3 i9 L( N8 Y7 ^3 y, E1 N6 Xset credibility-list (replace-item i credibility-list note)7 q5 M, a  }- S' ^
set i (i + 1)( y9 C" b, x; W+ I3 c4 |
]
1 Q! ?, ^0 u/ C6 c) o$ eend
1 C8 C, {1 B+ w) {( \5 B$ R
5 U3 M' t! ^4 k: \& Kto update-global-reputation-list
' @7 b1 f8 q# Zlet j 0
, J  F: @+ _% uwhile[j < people]9 P$ W' e( b+ n7 [3 r
[- ^0 R1 i0 R% r2 q' k4 J4 c7 H
let new 0% W7 `3 ]3 ^1 _& N# R7 @5 t
;;
暂存新的一个全局声誉
, S; e4 ~% x1 G2 K; |let i 05 |% i# Z4 N; l
let sum-money 0
& m5 z; E6 Y) w% F6 w  `% }let credibility-money 0
& i; u, o' _0 ~. V; V) twhile [i < people]
. K& H6 J2 M8 t' }. u& ^% c[
" \' h& F. n; z" T. e4 S. Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), a2 ~0 }- ]5 T& k0 e- W. B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; B/ M5 J, d. f1 z% ?set i (i + 1)2 K/ p, y; t0 G* o  e
]: L, m8 F5 l. q! a7 o4 Q
let k 0
) g1 o7 Z, e  H: ilet new1 0) @7 ]( K  t0 O8 T& |& @
while [k < people]3 i2 a1 e6 m+ w' D( O
[
# u# F  |9 t5 Cset 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)
* H+ \/ c9 b$ O. f$ e- `/ C( I; Uset k (k + 1)  f( Y# S) d- r, @9 I- x
]
) ^/ Z$ g& j: o6 E+ F0 w& p8 B2 ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # i$ @1 R1 E1 B  L1 [* t; m/ |
set global-reputation-list (replace-item j global-reputation-list new)  s) J3 l. B5 }6 I+ P, e" H
set j (j + 1)
) _3 U' K" x( B]/ D  o$ `4 h5 c& M: e! K: L3 P
end: P( n- v- m$ k1 d. v& s' K! y. S# p

* z' @8 o+ F3 g/ a" n! d: P$ Z5 j
' q8 W, T" k* O( F- W
& R* V7 F( ^) D$ c+ n3 E% f0 Cto get-color
7 i" T+ x& c1 s( O4 V) B9 ^" r& p2 r0 m! j4 y
set color blue

" L: Q7 ]6 |; @/ A. N+ T% l5 Vend' H$ F& d: _: ^. }' m! P2 D

4 V+ W4 N9 b" K2 G. D1 |to poll-class
" d3 F9 v; s: Aend
1 p2 m9 \4 @; |1 x% \3 R  _  q, T; W& n5 o4 c, U* z
to setup-plot14 L5 O0 c# a+ I

& ^3 y4 ?' Z! t8 tset-current-plot "Trends-of-Local-reputation"
) e; A  F1 ~% J# y0 y3 A" A, ~9 @

7 C5 Q! b1 X: S! X  y' F* f7 Vset-plot-x-range 0 xmax
6 F7 C9 m: I7 J  f" `# }; j

, J. {# s0 N3 v2 C$ y4 iset-plot-y-range 0.0 ymax

- h# S4 B9 L' T& Q7 f" cend: J% q& P: c1 m$ G9 d' `
" {' s* L8 `6 g) \% U* {% i
to setup-plot2
( W: ^+ B8 ]; w  V- Z$ A; P
2 o3 t" P' G4 f7 |set-current-plot "Trends-of-global-reputation"

8 k: C  m# d- z5 R* G" g* U- V& `6 N1 R% s9 R
set-plot-x-range 0 xmax

+ [0 e" A, T" \
: }7 T. n+ Z1 K4 Yset-plot-y-range 0.0 ymax

4 m0 b8 M3 N. ^& ^6 c5 m" Yend
8 l. _9 S8 I  H0 H9 D' p' t$ d  Q( h' M+ l6 Z" {+ |( r$ q, x1 t
to setup-plot3
& k. \0 ~' d! b: j7 {2 q7 |1 Q0 d
/ ]! W1 V+ z5 k8 N! e/ Bset-current-plot "Trends-of-credibility"

; a4 `: k. i0 K, E3 Y6 G
* ~- F$ K/ X! d& mset-plot-x-range 0 xmax

& l: }$ K: s6 k4 i! L/ r+ v+ D8 j7 y+ _( h" O. q7 P' a
set-plot-y-range 0.0 ymax
3 {, ~, b7 W6 N% x. |2 t! j
end
, j! y% n& ^  p9 o, }& r1 [0 }% h/ G2 q
to do-plots7 r( s* {1 S9 m5 s- V8 C
set-current-plot "Trends-of-Local-reputation"
+ q5 g2 C- ?  L) q( c' M, z) G" z* I0 H' qset-current-plot-pen "Honest service"" c" y* e2 Y7 ?& o) i% V
end$ |/ G& c$ w! Q6 ^% s. S  a
! a! F7 y/ D3 x6 c1 N( x* V
[ 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 y2 z9 P2 r, J3 K0 T% j

' K) y2 i/ g$ v9 n9 M$ U/ V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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