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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:
- j, D. A5 S! k" ^' }# q# Fto do-business 3 X! y* ]( M' T0 o# [
rt random 360  k$ a, R- h. Z" {" a- e" E7 x
fd 15 F6 ~  X$ \/ X0 j+ I
ifelse(other turtles-here != nobody)[
% z" ]) H7 f% m, G$ v! u   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& m) D4 ]* M: @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * ?3 `0 Q0 B; F1 G% \7 o+ a, L
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% k+ P* s& }" w( F0 u% j; p   set [trade-record-one-len] of self length [trade-record-one] of self3 B7 ~# d( |7 A' R% _3 V$ M
   set trade-record-current( list (timer) (random money-upper-limit))
1 ]+ N: ^" d6 l/ z1 q
+ a  T! m. v0 w$ _) ]5 Z! Y问题的提示如下:
. ?/ T- |% E8 Q1 Q; Y: Q& O6 V+ P) T* ]9 X) A( n% N
error while turtle 50 running OF in procedure DO-BUSINESS4 U- a' f- G2 I3 h' k
  called by procedure GO8 d6 \; a  X2 I9 r; B5 c4 {' v
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% X) M$ U# q1 i
(halted running of go)* v, C* b  B. m4 b/ i8 k- h) m
2 F0 g% b% [5 W' N* h) z# @
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 k6 F8 p* Q* C' E
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
7 d: c) ~. i0 n5 ~globals[
- r( A0 s5 n( R! C$ N& ~xmax0 t3 \" o* X5 v
ymax
& z, G! Q/ ?- T% A9 [global-reputation-list
; i" e& }) F7 p4 P$ t& p+ P! I# ^7 C2 I6 B! y7 w+ _
;;
每一个turtle的全局声誉都存在此LIST
$ Z. k* R, c8 b( ]/ q( t! Hcredibility-list
- W0 k8 m/ V, `2 ]& j;;
每一个turtle的评价可信度( X! s8 X0 }$ p/ P: J
honest-service/ e  \, X( ^9 o- C0 [
unhonest-service
, k5 w  B, N3 H1 r! _( C- e, M( Xoscillation
& `7 E' \% i( ]; |5 V' yrand-dynamic# Q( q+ A: I6 a5 H, Y# ^( K
]! o- {2 X3 D% a9 O6 \4 p

3 v% Z( K4 G+ }6 L& Xturtles-own[
6 Y4 O+ ]4 ]5 t0 e& @& atrade-record-all5 R5 _& Q  V) I% F
;;a list of lists,
trade-record-one组成7 \0 E2 L7 B' I
trade-record-one3 }5 b. Q" R; \8 e6 r! D) H9 e1 W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* @& T4 X/ P7 Q2 h4 m6 l' x6 a

" Y6 c/ ]. K. P6 @* n# Y& P;;[
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]]4 N% G5 X, T' Q: z. c  t
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]
% f7 w; k9 f5 V) f$ Dcredibility-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list7 P8 Y4 u, b" X6 X" _* k
neighbor-total/ E8 H% C3 @% P5 ~
;;
记录该turtle的邻居节点的数目
* N0 g" D' ?/ `0 n5 {trade-time
9 |$ g7 Z+ C- T7 k) x;;
当前发生交易的turtle的交易时间
3 f# [) A' N* Gappraise-give
) d! {$ V1 h4 v;;
当前发生交易时给出的评价' y! j( q9 Z, L# I9 j+ F
appraise-receive
, e7 P6 t( l, Z7 B, k' Q2 m+ }8 f;;
当前发生交易时收到的评价
% I# i: C, U, z% Zappraise-time* u8 s' E$ \* _# }
;;
当前发生交易时的评价时间
1 f' z7 E. V& u5 f) L0 x/ llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ x" e1 Y+ Z! S: k! E
trade-times-total
: o) O( b* N! y3 H6 ^* ^;;
与当前turtle的交易总次数( R0 G. n& C2 J- j) K2 x3 i
trade-money-total& M* u1 ]/ f/ Q1 a! ~0 c
;;
与当前turtle的交易总金额' j; t4 b9 ^+ }2 W7 H) J+ ?
local-reputation
; {2 _4 H6 F4 v; Hglobal-reputation9 Q) p3 r  d* V
credibility$ w% s: R6 o  v/ ?( ~5 f% g
;;
评价可信度,每次交易后都需要更新& g. G3 T( z  Z6 A9 ?# l
credibility-all2 n& O) _4 ~+ p+ n* ^
;;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7 X: W$ R' @" v
8 ]& d1 ~0 [5 S0 b6 r% h( t9 D
;;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
! Z- }9 X& j0 x) l# `) X% ]credibility-one
1 |. e5 F* P: S/ C/ ]  X; q3 B;;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# r+ s& l+ W: D! f
global-proportion. x2 w: G( f' f
customer
( p9 X3 Y5 q! K: n) z; m! Ncustomer-no# n1 e; n7 g9 K( m3 x
trust-ok; Y; J4 k6 P6 D$ @2 g& G
trade-record-one-len;;trade-record-one的长度1 \4 K4 h& k8 i0 h: q7 J
]% a; {1 n' d& Z# i  v' s) F/ M2 E
8 r2 ^4 ]/ d9 A
;;setup procedure2 o5 Q  f. I3 ]7 m$ F

; Y* w7 ~$ V- Z5 gto setup5 A. r! K4 G. h# W
$ _* L. X% w" H( x3 h* y
ca

- W& B" z3 ~2 X5 C
! K& v, b& c% m, F- w) P- ^) sinitialize-settings
  F. Y6 q' {: w; K4 e; a
6 ^! l# ?: X6 F' P# ^4 l
crt people [setup-turtles]

) \% {, i  y# h, @8 G0 f3 d, C, V0 l7 p. T0 A/ a, B1 T
reset-timer

) Y" ^/ @* p8 A; x" G' {
+ z' N, K2 P8 l  M1 O) ^/ vpoll-class

% q" O( G; y3 @' R
/ F( l9 J* R; j! J/ [setup-plots
+ s: L* A1 x0 x0 `& ~

6 \" L* b5 C: Q. edo-plots
0 q/ o' p0 _( D) m: Z) ]
end2 z  {8 V5 @8 c0 B& M
) |4 `$ f) b$ X8 I# o
to initialize-settings3 M3 }1 w0 x2 N3 |1 j1 T7 l
8 @# Q- ]; F, V. Z1 N3 v$ A
set global-reputation-list []
- \& A, v4 @$ {5 m* d( H' p

2 h. n+ L0 E0 `set credibility-list n-values people [0.5]

6 {2 ]! P( R; c, \; R2 \
: m+ l; r1 _4 w9 G5 g; }set honest-service 0

; E5 @& x* w# J, B6 G5 I1 T/ O( m& u- K. M; g+ t! F; J. C
set unhonest-service 0

" x9 y6 y/ V- r1 c5 T' p2 @4 d! z$ \) P0 @, e* D) Y
set oscillation 0
3 j+ D+ X* V4 M/ K- {# N% Z

" I8 E9 Z  j0 \9 W0 c  T; i! Iset rand-dynamic 0
! D# F, T# J0 i% X: ~4 ~# w
end. }/ ^% e+ e- q% L7 f1 n

0 s" _% Y+ u0 \( J( \+ b! z2 c3 wto setup-turtles # f. a$ f9 _! Q5 [* J; _
set shape "person"* F0 l5 ~/ }7 ^8 i! e& E% {
setxy random-xcor random-ycor% Y, X# Q: u3 v, o2 w9 T) G3 [4 V
set trade-record-one []/ r- V( T& P7 c* {( y

0 L9 _2 L& ?; Qset trade-record-all n-values people [(list (? + 1) 0 0)] 5 p! f. a2 v+ M  x: Q5 q

# t/ O% o( L% b0 c' eset trade-record-current []
" \4 _  b( p& g2 B9 N6 j, [2 X0 [set credibility-receive []  a- U+ Q, d: ^7 F* ~; {# V
set local-reputation 0.5( k6 {6 X7 u6 }4 p/ U
set neighbor-total 0
; m7 [$ Z* Q& a4 \2 _- |set trade-times-total 01 p: G) P5 y: T& l
set trade-money-total 0; z  E- ^/ b3 a. N9 P: a# f0 Q9 a
set customer nobody  r* e" I' h: ~. T3 T# h6 ~
set credibility-all n-values people [creat-credibility]
0 x: y; D1 b- n6 Y2 ^& R# n! iset credibility n-values people [-1]
1 K( l2 e) [7 p+ t' D! o2 Xget-color# F; X- X' L, m3 g
6 F( \8 q7 I% o& O# K
end
1 _' F9 j5 O9 t0 f5 I
! C: y5 H- d6 \+ p6 |$ @to-report creat-credibility
4 M; O# N: u# E; J" creport n-values people [0.5]
( G' D6 K4 m8 ?, I( W- Oend( c  |7 d9 k! D8 X: l9 s. K9 p. `
$ d9 K5 z  }" g9 ~3 M
to setup-plots* \0 o" q: M2 F; b7 ?0 L9 G

  v$ K( h9 l! I/ e4 h0 _set xmax 30

# U' l0 O1 B9 F/ A2 b& ?) a9 s* p& H3 w4 `0 g$ V  x& j
set ymax 1.0

, C  O( `' |2 H+ N" S
( W( E, ~( ^" z: C& Kclear-all-plots

" B4 c( s) J5 o/ p% b1 g7 x* C* Z! u5 I0 ~; x4 }$ o
setup-plot1

$ U4 A+ X/ Z0 f" q& _+ M) `  K9 s6 p% c6 D
setup-plot2

; p& J, u) r5 l2 t
7 c# J( A# F% H3 M* @2 usetup-plot3
/ e4 d' W7 t0 z
end1 L$ P, ]6 F7 i. e

' [- }) }# c; c. Y# Z;;run time procedures
$ U( A! M' y: e6 ]+ w! B: X: K0 D3 B9 ^1 U; x3 Z
to go
8 }3 H( P% d$ {0 C1 ~$ a/ |$ ~) w4 p+ r3 |. D
ask turtles [do-business]
# {6 F$ B6 T( L$ i6 P2 }
end7 }  b5 s0 K/ f" w9 G+ d
. I/ _& r" p2 H  u/ U
to do-business # [7 z" v$ C4 O, U/ q8 C: G
) C5 [  M* a8 j, K8 N' q5 f! x

/ Z0 i$ I% h$ {: Y% `6 v9 l1 drt random 360

" ]) y% ~! P8 s
& z5 g; \7 c- ifd 1

3 Y: M: B& F- g$ ?! h
9 D  r; i, G+ K9 f( A/ hifelse(other turtles-here != nobody)[

- \" f+ ^2 @; g7 f
: ]% O6 _- I) {8 V% g- i: |* Eset customer one-of other turtles-here

/ H/ k4 w& Q# T9 o3 W% t5 I6 a1 c0 I! O
;; set [customer] of customer myself
  z- o7 e+ \) Y8 O+ \

! I( X% E& K2 P4 ~3 z1 _set [trade-record-one] of self item (([who] of customer) - 1)
: h% Z" G% _- m/ k( |, [- H" R[trade-record-all]of self
! r: `% h$ ~& T' d% z+ |' s) a; ^1 b" u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& a5 P! E' U0 b* X& J2 ^  \# {* ], U! m3 `/ d: W4 K6 A4 k
set [trade-record-one] of customer item (([who] of self) - 1)6 b  K$ D; n  x! X4 i9 x
[trade-record-all]of customer

+ u% H, d3 \' i* j' ]; Z+ y1 r
; `2 k( p  w& H8 F/ |$ c* X9 ?set [trade-record-one-len] of self length [trade-record-one] of self

! W. L! u/ S% P5 M
  j" @( Y0 E( q% d; T, ]set trade-record-current( list (timer) (random money-upper-limit))

8 J" Z1 H& [/ J$ n0 F0 t8 u
! R* _9 R1 |& j& [ask self [do-trust]; A- D4 y% V) e  E+ H- u
;;
先求ij的信任度
) ?! d6 A# y0 T. }- b3 }5 W1 Z& |4 a* v" v5 V$ h( {( j: ^
if ([trust-ok] of self)
, n  d' T2 o# y1 k, d$ _9 u;;
根据ij的信任度来决定是否与j进行交易[& j1 y- N9 a# P) `" C; M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 S7 K# V; S3 u7 h& m' `

7 }8 p' K7 n% N& U% I* T[
  L2 B' ^5 n2 Q; Q# D6 w3 c. m% [
0 a- {: [' _' c
do-trade
8 h* v7 R# @1 t0 N/ t
( ?9 m6 a7 A: Y/ Q
update-credibility-ijl
1 x# \1 R. t1 W7 H8 w) }* S& X

7 C( j, m% n0 G* @3 aupdate-credibility-list+ X+ S$ q- O: }* \7 F3 c3 B! d

2 ]! O$ Z4 O) v) c- }. T" N) T0 M7 O2 _" Q# r  ^' q* u
update-global-reputation-list
; j+ }- B9 M6 K

7 U, E6 w: G- [0 a  @poll-class
4 ?. q* T1 Y# m, e1 v
2 G7 S) e- Y: H( P1 Y
get-color
( B2 B7 r. G0 |; U( j" S

. c) u* L# m& |  l* ?" H! g9 e]]
8 m" A+ v) v& F  _1 Z) R* C
. H1 _! Q2 g; f* p;;
如果所得的信任度满足条件,则进行交易7 g: I( K6 ~4 T! G* v, x, e
" \0 W, n" t6 F7 l7 B! B
[
- `$ D; v4 S2 C2 Y, E
, _& q: a! u" B8 m/ e8 r
rt random 360
+ n, |& w/ @; }( g' \) M
& X/ s5 v) @5 K' A8 ?3 R
fd 1
+ p7 B' X+ h: h9 [& }, L6 r& g8 S
; y5 W( v+ o7 E  r8 m, m: O( R
]

2 X9 O6 y2 ]+ k2 a5 R+ K/ ^" M4 S5 Y" r# U7 H; s: c3 K- R
end

" Q' |7 s: \6 D; ~9 W/ @3 w, p" f0 J
to do-trust
9 r3 q$ }0 @7 L, V- |3 [. n: }set trust-ok False
" @. j" b# ]2 e! A. g% `1 l7 K' l9 G7 h
' W8 P3 Q+ K! [0 [2 c* ~
let max-trade-times 0
' S# r. h. o& [# I5 ?, eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. G+ o% r3 W! Y) Plet max-trade-money 0  u; |. I- Q6 G( I# J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 }" C) Y; m2 G4 [* B& |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 \" _- |. |5 u
  z( F: f' `% p! k" @3 l- c
/ V* k" f  G2 y/ u2 O! s! e
get-global-proportion
3 ^  b: T- k3 f4 v/ \let trust-value
* e% A+ L. O# V- W' Zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

! P$ N8 p9 c) b* f' k" o- Mif(trust-value > trade-trust-value)
" C4 C2 W! f. C, M[set trust-ok true]
7 P2 Y$ c( a, Y! w  a( x3 }( D4 C* `end* L5 T' [5 w; t4 }! N

: J( \, o5 d3 o* Y" M' j6 ^to get-global-proportion
* p% s$ u  B) _- w, @8 ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 o. \6 \/ Y) m( M
[set global-proportion 0]* F5 P' z2 n9 G, q
[let i 0( n- C* r% s8 R+ {5 M
let sum-money 0: `8 g1 m, G$ T3 `. t, B/ q1 |
while[ i < people]
4 Q$ Q2 E+ N9 {; M[4 Z3 \7 ~' N  ]
if( length (item i/ i  }: j7 r9 }$ o+ F
[trade-record-all] of customer) > 3 )
) F- Z, R" A5 y) k* \& _  I
[5 O. g1 ?3 f, E2 `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# K% o- V  m5 C
]/ q# L( Z0 `9 u" a8 `( O
]
- d8 b1 n. d& h9 D9 m; o8 zlet j 0) F2 ^; P) a0 m3 ]& q* E, ~0 k
let note 0
4 T4 v1 b; T) i! z/ E- b' @while[ j < people]) ^, W+ K6 G- U$ E" A" I! W- k  Q
[% j* V7 H; t% S: [1 z5 k& v
if( length (item i& b8 U! C7 W! Q0 _- h0 n; x4 \1 G
[trade-record-all] of customer) > 3 )
- q& ]$ \' i1 I3 C
[6 s6 Z$ _. F& M3 g. m$ N
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( R7 }4 u# n! K! L, W7 u[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# @0 r( D% I; R1 _$ k[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ i$ i3 w* Y6 C9 a2 C* i4 C, |]
/ r/ d  ^* F9 Y$ q]
# L# B, [) _: z6 B* I! Vset global-proportion note/ P9 z( b2 F) ?: U; ~4 L# D$ h
]5 }; e# o  y; t+ P9 H% H
end4 o! D& [0 o5 o& _# d& }

1 O) F' ?! m8 J/ f  \" V. Yto do-trade& e- Z0 w& {4 z- f- R
;;
这个过程实际上是给双方作出评价的过程$ B* X9 t0 n) I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* _8 I. S6 s  J! w5 a& j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 R9 T7 z2 ]( W! s, cset trade-record-current lput(timer) trade-record-current. i9 I: F' m. c
;;
评价时间6 }3 ]$ t, x( i/ R
ask myself [
5 T. l% u/ c9 O' c# A4 R' bupdate-local-reputation
9 m6 }3 H2 t+ b* S1 y$ l3 A7 [set trade-record-current lput([local-reputation] of myself) trade-record-current
+ d- O  K9 d4 s0 ^. w; z6 h]
5 M6 W1 E" l) q: P+ h: fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& z& X) l: Q. |6 e5 {0 J" _;;
将此次交易的记录加入到trade-record-one$ b; E% ^1 |7 N. Y! r* c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! W  a- Z0 I! d) B1 F; r4 ^" U
let note (item 2 trade-record-current )5 ?0 a9 E. b4 u6 D3 r
set trade-record-current
2 [' Y7 V5 F- R  A/ B(replace-item 2 trade-record-current (item 3 trade-record-current))
+ }/ z  S0 d4 K
set trade-record-current
/ O3 k" c& C2 R2 i(replace-item 3 trade-record-current note)% _3 ~$ M; {# A2 C
9 D# Q5 `% p9 E1 Z5 E
5 V1 S6 ]2 I) f
ask customer [* o' S% y# p: g; K
update-local-reputation
$ h/ `5 }& V4 @5 H# nset trade-record-current" p9 i9 t# \# z5 U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 s2 l2 {* f/ F! G: N: i
]& d) ?! p+ `( C* l
$ z) r5 z2 a& ?8 v
4 b# g6 {& J$ P* P9 a0 B3 a& {! u2 ]
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 u9 v0 `0 T+ O. q# l8 @- w

! S5 @; l+ S  Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 Z3 K- Z. {$ W. y5 x: O: t;;
将此次交易的记录加入到customertrade-record-all! l9 {- {* a4 y. }/ o' d8 @
end) C& P6 Q2 C6 ~$ O- j0 h
9 N5 m( ?2 p8 d8 }
to update-local-reputation
2 U' G6 Q1 D  e" Sset [trade-record-one-len] of myself length [trade-record-one] of myself
% g( C# u- X4 R5 B$ e; T; S
( w! H7 V3 |8 [) D; b7 b
: I! B' `) u3 W( D3 s;;if [trade-record-one-len] of myself > 3
( ^7 N9 f1 p4 R7 \; i
update-neighbor-total& ]* L1 n: K4 H, j
;;
更新邻居节点的数目,在此进行
; j) g4 @/ B) L( \# W; {3 ]' ^* Qlet i 30 {& n2 K8 Y* D( m/ y( o! k* `
let sum-time 0
  R; b, R" G& A  R9 b" J( d4 A9 }while[i < [trade-record-one-len] of myself]; }3 l8 w2 T! L3 ?+ y+ i. c' H( \
[
* Z( }0 i7 w6 g+ Y* Y# Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% U" \* @. e* p! V, F3 D
set i% B( r& D  U+ R- b2 A
( i + 1)
. O+ P& g7 M) [! c
]
4 p: ?. n8 Y9 P- K" ^let j 3* G0 D# o1 V, i" b% `! X
let sum-money 06 S' e2 \) Z) z# g5 H! O
while[j < [trade-record-one-len] of myself]7 f) o* a# l( @4 t& g5 @6 n
[
2 h( T) ], m/ A; |% R& Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% p0 i9 Z! r/ }/ A; a
set j- S0 x* w; S& j8 B# a& R  W. d
( j + 1)

& B/ p# f7 w5 j, t6 m]
' T6 {: @5 _& x; l8 H8 nlet k 3
  p' F* c' W8 e( Ylet power 0
3 R% T4 y0 p/ [2 Xlet local 0' x+ N9 ]( {4 }* O0 ~
while [k <[trade-record-one-len] of myself]; |) f  L! L& M( Z7 H/ ^
[
* y$ g5 `% O: @0 h0 C5 yset 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)
: A9 f4 s  C) \set k (k + 1)
1 z% X9 a' y5 d4 s- Z* W]
; |! |8 P1 c( P4 r# e. ?4 l* ^9 O2 eset [local-reputation] of myself (local)
+ n- k& l% q6 vend
# h# Q8 t' r1 \: ?7 w9 g& `. c& Q- z; t' q- x
to update-neighbor-total
0 N# ?% s0 U. ^) j; d  K  w+ q' _/ ?: ?+ p, ?5 t# W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' R; x' K8 \2 Z) K8 j/ f
7 [, M- \$ }& f% S9 X
0 d; I3 k; Y3 }% T/ I5 P
end
: v# p9 O4 ?' _+ B& A7 S3 n0 ~3 a) q
to update-credibility-ijl : M, B6 [& O! |& T6 X+ k
. b2 e( l* x/ ~# R" V
;;
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。
. r8 [0 K7 F$ E. K* v3 l; ylet l 08 [9 M8 o  J0 V1 s; V' e
while[ l < people ]
7 w& _, H3 U5 F  t/ Y  `; D1 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
( p* x: W0 T/ p6 I: P+ n! ~[
! V! D0 ^! V) K( s. C; Slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)! R- m  m7 J; g: V3 f# w) R
if (trade-record-one-j-l-len > 3)
- G' k3 R9 }3 a2 y[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-one4 Q  W# Q7 C6 m2 m+ g. A; B6 U+ r# E
let i 3
8 l! r" |. c* L; o  }let sum-time 0! _+ |) `* _; }+ m" G5 E
while[i < trade-record-one-len]/ }9 X6 @& i9 z6 q# W3 v9 w
[! z- a% {2 {9 @3 r; N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 M& z  }+ f7 T3 R; ^& K
set i( b. |4 R8 P, X# \+ ?1 i, w  e
( i + 1)
" S$ I) l) @8 @- @) q
]: o  r2 J4 ?) k8 C% p7 B' U4 A
let credibility-i-j-l 0# k7 H6 z# a: s3 a5 n( R5 N0 Y4 L
;;i
评价(jjl的评价)
& Y6 [  e8 V4 |" i4 G/ O- `( plet j 3$ m* b4 |1 O% o3 m
let k 41 h# A& k+ ?! N- g
while[j < trade-record-one-len]
$ C; a* l  o, k* B, n9 V[* g- F1 j, `! h% q( ~% z5 I
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
6 e6 G- V( K7 |" T, }0 |* Eset 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)
' @0 j2 q/ ^/ I0 A' u2 Aset j; ^: D5 p& B# V5 I% b
( j + 1)
- n& s2 X6 j# x3 k. c- S
]
2 R9 S7 t* `4 r& fset [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 ))
- D( j4 H2 O. y; H+ n) U6 E
* h  b- |) S* }5 W6 k1 V' G, w6 v
1 l- a4 J' g! Z7 ~
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ q! @5 q* X& N  @5 }
;;
及时更新il的评价质量的评价
% }  k* r3 p# i$ @* L& Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 J" q$ y: l( [6 ?set l (l + 1)3 f3 a# `3 c* x8 Q1 i1 Q* c  F
]8 [  N& k4 y; l4 D$ a& P& t6 h: s
end
; F. U3 n3 e. R+ y0 Q; m: P6 W& P! n4 ^& R7 {, J) O4 R$ z
to update-credibility-list5 p1 Y, A+ u8 E& t
let i 0( x5 u$ |2 }3 `
while[i < people]
- W. F" ?8 f) Q6 R. f[
8 ]. q7 |/ K& c% m4 U: zlet j 0
: U4 H. x, ]8 k0 G1 plet note 0/ U0 ~; W7 G. T3 i* F
let k 0
( b+ R/ b& L0 O  C;;
计作出过评价的邻居节点的数目# m0 X& I/ d: ]9 w% w+ A) s" V
while[j < people]
) U! V3 t7 `1 x7 z+ ^0 a% s7 V[
0 T8 [  \. [3 m9 zif (item j( [credibility] of turtle (i + 1)) != -1)9 u" q, O' |2 A% i/ z9 q# e
;;
判断是否给本turtle的评价质量做出过评价的节点
4 R$ D% n% S% B9 _% G, w2 E[set note (note + item j ([credibility]of turtle (i + 1)))
& s2 c0 p6 |2 C;;*(exp (-(people - 2)))/(people - 2))]
9 `, q5 K- ^4 Z
set k (k + 1)# t$ w/ i. C4 ^7 \- D: \% s! y. ?# X
]
2 s' ]- ]8 i0 G% m1 Dset j (j + 1). |+ s- T- L4 N$ X" K% E
]
/ A( l/ I2 m9 D/ aset note (note *(exp (- (1 / k)))/ k)
& O% I, i9 Q- V. ?. s8 R7 h6 Cset credibility-list (replace-item i credibility-list note): K* X; U( u. l
set i (i + 1): O* N& l4 y% K
], O( y; l/ {% f  ^# K* Q
end% z" M( H0 ]/ g. v& |4 A, [+ m: ?8 O

, Q* j8 g4 d% f  tto update-global-reputation-list
# a; q# `) b  V2 x2 L' `4 Mlet j 0& q6 w- r$ u# r$ A! a, e2 b$ p
while[j < people]- e3 g) u. b5 \6 m& s
[! |4 L" e& c( \7 M' u
let new 0- n! F8 b5 p0 a
;;
暂存新的一个全局声誉
* v: k4 ]; I* o  X9 B" Y3 P. g4 Wlet i 0
  z% `4 K+ [+ _! clet sum-money 08 Q; p$ M# j0 L" u+ I* h/ m8 E. w) _5 s
let credibility-money 0/ T- t1 B/ `" ?6 v# Z
while [i < people]
( t9 D' V! U5 V* g5 H[5 `2 V( n1 Z8 E
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 e/ o) u: |: \8 |: N) ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& w9 }; L' j. u( J0 {) u" ?3 @set i (i + 1)% n* L. P+ I8 q6 ]0 m! I8 l
]- X2 P# v+ l. I. K3 ]4 P. |
let k 0) N. O4 N- e8 z! W. \- K
let new1 0; M3 v% ~8 O5 t( C7 U6 W9 u
while [k < people]3 M& j2 x8 m2 s; V
[+ `4 J" v% B3 y+ [7 Q& K3 @
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)
$ Q/ U- h. n- T6 X- \9 rset k (k + 1)
: E0 C2 V: Y2 K. X: d2 v7 P  D]% m5 T9 J# a1 J  D4 f$ g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ [6 n5 _; g7 I3 Gset global-reputation-list (replace-item j global-reputation-list new)- S! t' i2 S' T1 _, c- G' ~
set j (j + 1)# y  _+ r* W! j7 z* Y9 w/ }4 `( L
]
3 [6 t" |2 z6 u' k. v0 Tend
2 v, ?( u  h  N0 X. o
( K  N: E) V- j! k1 Q6 F4 x* L5 J2 Q7 z3 I! l
. f7 c/ ]: Q! o+ M% Z) x
to get-color! E1 l- T; R8 P& F4 B
+ R3 r3 a, Y. _9 w: o3 r
set color blue
3 r0 q& r( S& @  A  m
end
/ Y% S: f6 c( ^6 P" O
7 W; k' t) N) Z6 ~+ |6 e4 q0 jto poll-class
! ^, ?- K% u8 Y7 F0 Lend+ S6 m$ l; j2 f! E/ e! Q
5 |: a) d" {+ v) _! a
to setup-plot14 X2 Z! U/ Z7 e# D7 B" \. k
- G; }- a7 x# a  R- f
set-current-plot "Trends-of-Local-reputation"
* b! r* d4 p% z" y

: J% w1 |6 ?* D, b* m: ^set-plot-x-range 0 xmax

# v% p. m' R1 y) {9 p2 O
/ |. g+ H- u/ c/ S8 eset-plot-y-range 0.0 ymax

+ w: G2 W- H$ u! `+ k  Y9 [6 B. pend5 Q8 z# F2 I6 b- }9 e
) I% Q) N) l  q. [% Z& z+ \
to setup-plot2
0 I3 e! N; b. N/ E: P  Y8 @
& b8 b7 D- |# d3 G9 b" L& `3 Zset-current-plot "Trends-of-global-reputation"

5 s% h' J/ Z  l+ a  P& s; }& _# @9 V* C( X. _
set-plot-x-range 0 xmax

* W" K$ F7 x9 @) k. o& y# V" `1 V; D. J+ ]% `
set-plot-y-range 0.0 ymax
  a% h8 o0 Z  ?
end
7 D& y: B0 h, {* Q# ^0 T! o$ V$ M7 e3 \* B, l5 j6 T; @' X. X' ~* C
to setup-plot3
9 M3 M  ^3 Z" z7 Z: F4 |6 v, Q
7 }) q. p: W' }( B* Nset-current-plot "Trends-of-credibility"

0 T0 E; B0 M9 p8 c6 }4 A0 ]/ j# t! g! k& O, O
set-plot-x-range 0 xmax
# }  r  A- Y* H3 U0 u9 u& h

* ?& {3 J0 ?5 @set-plot-y-range 0.0 ymax

$ r/ R5 |/ {2 ]( N! E+ `( vend$ w$ C$ d6 j* l: P; t2 {" z9 b
5 f% @. P* l1 t$ D" o
to do-plots
1 T& l! Y% @8 [( P' E. rset-current-plot "Trends-of-Local-reputation"
7 g( L; n1 _! N. ?" p6 w6 P5 E: [0 pset-current-plot-pen "Honest service"* V$ ~: s1 _, F' ~
end8 O; q: M/ e: T  E4 E& O: c

* j' @5 z8 ?9 p/ K4 c1 R! G[ 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.
4 v: z2 T6 E3 a/ ~; ^+ _& T
3 [: [5 U* ~, l$ q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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