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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:
" @# j7 B7 ^7 E+ bto do-business
! q5 x5 x$ P1 ]# _% {$ V( x. I rt random 360
" D0 b5 A6 u* ]$ ] fd 1
" I: _2 n& ^/ i& y3 E ifelse(other turtles-here != nobody)[
0 E/ e2 V' g$ ]4 z9 V   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.
; Y2 E( b- e4 ]; F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! s7 ?) Y- o3 @# J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ x; Q1 ]: l6 Q2 c
   set [trade-record-one-len] of self length [trade-record-one] of self& r% j# J4 {9 u4 @
   set trade-record-current( list (timer) (random money-upper-limit))7 D1 e3 q; U& u: R$ d' k
& E! H2 K3 }+ P4 A; _; r# U
问题的提示如下:
0 a3 H* x/ Y. e( w) K* i% M8 k6 K6 Y+ S
error while turtle 50 running OF in procedure DO-BUSINESS. k2 j9 a+ P. g. V3 q& [+ G
  called by procedure GO. C# x9 a' V% o) _  K' G) W4 o
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* B3 A* N/ U5 S( j- b4 H
(halted running of go)  ~' b6 t" h" r
" w4 h1 |: H3 f$ V! `
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
* x6 }: u: @3 k8 B0 F$ V, e% k3 Y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
0 K) t8 S8 x* m+ X) Q! [globals[& C/ r3 _  L. i$ z
xmax
, ]% Z# H! \4 o  _, ~1 kymax
+ N: ~4 Y; E- W7 Mglobal-reputation-list
# F1 Z* \- A2 q5 l3 y- N- \
% z" \' z1 o/ R" W;;
每一个turtle的全局声誉都存在此LIST% e7 F- y. z+ z' E) U
credibility-list
# w5 G3 \; d2 w1 ?9 W* V4 y, L! p;;
每一个turtle的评价可信度8 V& Q1 _- X. l$ b4 h1 t; l
honest-service
# L/ n. v7 o# bunhonest-service
% Z# c0 E7 Q# H% X  E* o& Roscillation9 O( g  g% V3 U+ n1 X
rand-dynamic& W1 ^, Y( n' m4 x8 Z6 @7 j* J0 k$ W
]' W1 S$ ]0 u/ R7 }7 Q

  a1 i9 ^8 \- Yturtles-own[5 C! d* f% R  X" N: }- B% ^: R" X
trade-record-all
1 M7 B5 g0 Z7 o+ u' ^+ E& e1 };;a list of lists,
trade-record-one组成
  Y2 `% Q1 Q( ]- |! gtrade-record-one
+ j% ?% r6 f! F# f* G( _2 S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 U- x  `$ V" K, N) e# d

$ M8 h5 C. f6 G% B) W;;[
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]]
) l8 f/ d, U9 [9 ^- Ktrade-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]
+ ?+ x. I: o! K+ Ncredibility-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" O: Z0 H$ d6 H' F+ M
neighbor-total
; m" B' P! v, C  D) \# |;;
记录该turtle的邻居节点的数目
$ n+ _' T. r" M; d" F) T" j* J4 ttrade-time, g- C& }: K  ?, u) C2 Q
;;
当前发生交易的turtle的交易时间
. _# {2 ?' S5 }6 ?6 n. Jappraise-give- ^- i% y/ ?& S2 E9 h3 g5 G
;;
当前发生交易时给出的评价
# h, i8 J8 z% h% ~  [! i) e  iappraise-receive( v& `) J5 W6 L$ G2 b; W8 L
;;
当前发生交易时收到的评价0 t6 K% m, S! V& j
appraise-time2 Z; W6 W* C- M+ C( n5 ^
;;
当前发生交易时的评价时间
8 y: ?3 G, O, {1 r! j6 E% `4 _2 jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 Z  ^+ o, }! |0 x, Etrade-times-total- z4 R% }9 Y4 Y& G
;;
与当前turtle的交易总次数- [8 t, t1 X! o- Y" s% r
trade-money-total  M  Q6 K+ T0 C; K" P' m
;;
与当前turtle的交易总金额2 O2 X/ d9 S: G+ y, F) U
local-reputation5 N* z$ U: S7 @! H  ~+ \* p
global-reputation
/ v; V) r& N3 q( R/ vcredibility
1 [& h) ~6 E; {, ^6 f2 H( H9 B- J;;
评价可信度,每次交易后都需要更新
5 P# \) d& b$ A1 P$ N, i5 _6 Ccredibility-all
7 h! A# K- E) V8 t;;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
1 i4 X$ e4 k3 W% Z1 [
  m& C- M5 m8 J# @2 V;;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
9 D0 o& ~/ ~) M  e% dcredibility-one
4 s) |( o7 u7 h( o% N/ n8 ?;;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+ u& A& G0 _: U  ?
global-proportion$ N; y2 N0 |' u6 ]& i
customer
3 s: @2 O/ h) @: L! U0 _9 @customer-no
1 o* |' ~4 r- p. \* N: U; ftrust-ok; z1 v0 o: d1 S1 z
trade-record-one-len;;trade-record-one的长度8 r1 A  ]3 y0 c  V
]5 c/ h3 O8 B  O, f4 l1 J
, Q  @1 |& S; {7 Q
;;setup procedure
# d; [5 R" m7 t7 ~% h5 v, ?. S9 }# b  G* Q/ {! k
to setup
* @2 k1 G( \- g5 @4 }. q* |; O5 {
ca

$ G, \$ l* F8 C- _! \3 f% Z; k. d; u0 g% s+ L7 r1 e3 N
initialize-settings
, [$ X: n/ G: l7 s+ @* U9 I: ^

! V, a/ {/ l9 Z! p, m) Ucrt people [setup-turtles]

' z, U( H! f2 y9 i4 p/ j7 V" @! K
- M# R8 V$ @0 c6 s) f8 e, Q8 Wreset-timer
: q& S# U# v- \% b; c6 P0 w8 Y

& d4 z8 z' g2 q* W3 c& e0 _poll-class
8 S( x" B8 i! F# s8 D- C
4 C) U* b1 C; J# C' m4 X- g# f) {
setup-plots

' b# U) {5 @: M9 q
& ?+ i% y& N1 o3 Q# f: h4 Ddo-plots

) ]3 w9 ^! r+ X4 U% A* n% ^end
3 b2 b  O( a8 c
4 O1 U( d( i6 Q/ E( k, yto initialize-settings
$ z5 ^+ _  e2 v6 s
4 j. G7 M* f0 W( v$ h4 ]4 @) g+ N- hset global-reputation-list []
- |. I5 z) c- m) K5 I
/ o  m5 t. V5 u
set credibility-list n-values people [0.5]

" n3 c% j1 {% E5 S* v$ u
8 H, }  M6 N' O+ m4 `set honest-service 0
. X' d; k) Z5 }/ |4 I

$ f! U' A% `0 b8 G/ E% {7 Y; ~' {set unhonest-service 0
6 B* V; B& x, o5 r4 N

! w6 t# L  M  _1 i) p0 m# [7 mset oscillation 0
1 ^/ x8 V. V/ d- f# h
4 j  l8 m) t& }6 C
set rand-dynamic 0

. @8 P8 i4 a) ~6 s& rend
* X: o9 {, O- R, H5 |  X9 U9 i( ~* X+ {; ?6 ]5 \2 g7 |& P
to setup-turtles
; r6 j# S8 B# Eset shape "person"  M1 L- k$ l2 L+ C
setxy random-xcor random-ycor
3 B; k* z7 r- ?9 n0 {set trade-record-one []# t$ k( }: u9 u( K9 e* `, n
; i6 Q8 D7 K. L- J  I- U2 ^
set trade-record-all n-values people [(list (? + 1) 0 0)]
' f' Q7 i& V- R/ M

0 M* I1 |$ w$ i% S1 Y6 |, rset trade-record-current []5 Y, S3 |7 R7 q; e5 f5 W$ p
set credibility-receive []
0 y, a! f% N4 c% w/ R  v9 wset local-reputation 0.50 i& J; n/ U* V* X
set neighbor-total 02 J8 `& n) r; N; E, y, ^* A- t% f
set trade-times-total 07 {2 q+ M/ F# @
set trade-money-total 0$ _9 c9 n$ B% h5 ]8 p6 f; N6 I1 W! G
set customer nobody
6 X4 B# G- R$ T$ ]2 d" ?4 p: [) z& eset credibility-all n-values people [creat-credibility]
# A' _8 M( s" {6 I6 j% F/ H+ mset credibility n-values people [-1]3 V$ o" T3 }5 W. H6 `8 J6 r
get-color
! b. v  u' i- E

, z2 J9 N7 r, o; Send
: `& y1 F. q8 C1 ]7 R" K, l5 I1 K9 E$ e* N( U( [1 A9 M/ n
to-report creat-credibility/ ]2 X  T2 z5 A/ o! ?7 b- x
report n-values people [0.5]8 o1 A: o7 |+ x2 U6 V9 o+ _( P# Q9 _
end9 Z0 }) K1 F  [
1 N, K1 h* h; r0 K
to setup-plots
* I  @! e' f* b8 c$ k7 ]' X
- A7 u5 L6 X2 @, Bset xmax 30

( J3 Z! ?8 ~8 x0 u' I( N# M. n* p/ J& F6 q5 V# t& [" Z' Y
set ymax 1.0
! [$ J1 ^' m$ D0 l! m+ \5 c
. u. J& X7 }# n$ j3 E" j: p
clear-all-plots

) f7 s7 ]& |) ]. Z* p6 m8 s- S4 W; r! D8 g! i
setup-plot1
' u3 P, T" A4 E; U2 H: v
8 O3 t* S; N% W9 x; @9 ?8 k5 F
setup-plot2
' A8 P* _$ u; h+ Y1 H) m
3 M# \6 y+ n2 w, Z; L/ |5 {
setup-plot3

0 _. f! R* m  O% n) iend
/ Q0 v8 V# T% P; C
: B) N& {" [9 O8 H# P' E- Q- ~  k;;run time procedures% K9 p  {+ F* m
' o# t- {  n% N4 m& U$ B/ g$ s, ^
to go) G/ {- y1 c9 T* j
6 q& Y6 l% y4 f. T: ^; K
ask turtles [do-business]
3 q) @: i$ B. E  f7 M7 P, f, s# j
end+ G- s* H' r4 o5 m
. r( A9 R' ]1 g) j3 J8 `1 n
to do-business
% z: n- t( N2 R8 O% l7 V
1 d6 E( @+ w. L+ {/ |. J
" J$ s% ^" ]' P1 N: C4 D
rt random 360

& j: [' t: g6 T  H2 N# j# A8 D- T% X; |
2 d, [0 x! Q3 E: v+ W* k& j9 e- t+ Yfd 1

" O  n$ d* C% q, D; W, x
& Q0 m3 d5 `  J" [ifelse(other turtles-here != nobody)[

8 |8 L9 x4 K! X" X! e3 ?' ?. m! T) U6 }# L1 F# i
set customer one-of other turtles-here

$ R* y# l" M% V7 ?7 V
! X" B& j. W0 d% X4 z+ n;; set [customer] of customer myself
, _% U' s- a6 f! y, u
- b: e2 e1 G$ I' L  e/ }* b
set [trade-record-one] of self item (([who] of customer) - 1)
/ m/ Z: c) a. @$ g5 r  a[trade-record-all]of self! x" ~$ D, {% d! E* _3 Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 k3 |9 g2 z# d3 v
0 }  f6 p; |; Y) n5 \  m- y" H- Sset [trade-record-one] of customer item (([who] of self) - 1)$ L/ v/ p4 S8 x7 a9 C
[trade-record-all]of customer
( h# J6 P$ {8 _, K2 e7 G  b8 R/ I( A

1 a+ D3 e: k0 q. Hset [trade-record-one-len] of self length [trade-record-one] of self
& r, k- k/ Q2 p* o7 O
4 H- F# x% i* w; R8 u' Q
set trade-record-current( list (timer) (random money-upper-limit))

- F* L+ c9 v( G0 h& b- Q0 s1 u+ g+ ^5 w6 ^# E( s0 \$ }" `
ask self [do-trust]8 n3 C2 @  p' ]2 a! Z. m! R
;;
先求ij的信任度( }/ `& g" Y3 e

) C2 L9 M( N3 N) P1 O/ }( J/ q9 Dif ([trust-ok] of self)5 X$ k: u, j$ a' j5 {- A
;;
根据ij的信任度来决定是否与j进行交易[
& M$ e5 R( I# r8 Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' e: L  N: V7 x$ N
3 X2 c+ \& x% S7 d4 i[

8 [  @$ v, r$ O5 \% b) q8 {9 `. t3 ^) z+ g
do-trade
9 X* s: D6 n4 g+ _
" r" Z: u" }  n* v% p  @9 D6 ^& j/ E
update-credibility-ijl

# R! T: G/ K/ B0 E5 Y) u$ m5 Y
. @, u$ r8 U# j9 r5 ?update-credibility-list# Y" ~0 u& q) z

7 r+ |, ]% G( ^% u# }
4 h2 ~5 @2 f  K; U( t" @, rupdate-global-reputation-list

2 C/ s. Z' M: ^0 q* c, C# J3 A
( V0 L! B3 Z4 L+ Mpoll-class

% K/ E  s. b* ~% U
" v: o2 N% O1 G. {1 `get-color
& ~8 c! b  K4 c
  P" Q! {* [: A- u8 {
]]! y! x. e3 A( n) D; {
. F/ o  {& k2 h" |+ o% H, {
;;
如果所得的信任度满足条件,则进行交易
, k) N. g* ^. F) @1 Z
$ J" L: Z; k. ?  x[

/ }3 V# u3 x$ a
  c: }7 L; `7 s3 P7 vrt random 360

: [5 M. a, n, i- l8 D0 U9 g" y& \' M5 J: q; J) \5 H6 b+ ~" H6 J# X0 F
fd 1
' z+ o7 o& |4 P1 @) l/ D/ T
# M* X) T6 G6 u( H+ Y
]
3 _6 c5 m/ |% l! V* c
5 j) b+ t# J$ E: X4 p3 \5 m
end
7 q) F( [( N# A- v8 R6 R
4 i+ S! A- I7 m* K8 k, t) N' R
to do-trust
& K3 L+ s( g- f9 Eset trust-ok False% t( m' U( v3 z" Z, E+ @; r

/ E' \* Y. y( Q
# g! s5 X, s( g+ ?' U
let max-trade-times 0
2 c) V. h5 S7 r: nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. E9 k; Q6 I1 H8 w: N# Z0 J
let max-trade-money 0
( D' P) I* P9 [* K1 Qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ Y% i4 V" \) y9 N# k  B' Z/ f/ J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 G% r$ P& |' S# L2 }7 \2 u1 ]- @
7 D4 {" S* g. \7 y: j

  o4 L6 C! L) R* k* P2 jget-global-proportion
2 a$ k* j6 L% }2 R6 k8 ~4 klet trust-value
- }3 C( O6 {# A/ U( ?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)

  `! V5 t3 A& [2 k8 X; U# |if(trust-value > trade-trust-value); X# A7 j, v; M+ H1 S
[set trust-ok true]
/ Q- Y+ U! B% `  _. ?  F- oend$ ]2 X0 x6 d; a# l+ p7 E) Q
2 [+ X, A! j% e- W1 f. D* l
to get-global-proportion- Z9 O: M! G/ ]
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  W+ s2 j! h# K  A  D1 S* T[set global-proportion 0]: x! u  O, m- ~9 Q7 F
[let i 0" Y1 M: p) i/ h0 H* j
let sum-money 0- N; [5 f& t1 g% z+ n
while[ i < people]' V: B$ [- l. P* d2 z3 r
[: k" P9 w& o) h5 X1 B: y/ E# u* |
if( length (item i
% ^) V$ u! u8 e6 |7 l( ?4 H& }[trade-record-all] of customer) > 3 )
  a4 [0 ]4 Z; Y' L: _. A. K2 b; \6 H
[
* P/ t9 A- `6 ~2 [- j6 Q  yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) C- m- Q; L2 T# g]5 `# F+ \  ?9 a* s, S
]% l& W: s% ]) b; T" `& q
let j 0
1 `1 z- l6 V& m5 ^2 r- R  q7 blet note 0& n$ l, a$ c2 r6 I+ p
while[ j < people]
' I/ m2 A, {; Z[$ E+ @. o. y/ j+ U& ~2 h8 h
if( length (item i
( h9 w& j# ?( X0 a" h6 _+ z[trade-record-all] of customer) > 3 )

7 @6 h* W: Z0 w; m[
1 O; |; [8 r. m/ tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' U: q* d, l% K8 ?' r+ I: y& t, F* Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; o2 A! K6 q9 v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ x1 W- o6 k1 {; C* D' E]  j; L" r! J, @. x; E: D
]
' g* {7 B/ Q5 l6 z0 ^6 u2 C( e. y: Nset global-proportion note
1 v- S* ~: l1 ]+ O. H]
! w  p4 A8 p9 A( qend
4 P5 e7 [+ N# y9 r0 {& d
  h; j- `& q  S6 [7 ?2 O9 [to do-trade( |$ l4 c: p# H/ R
;;
这个过程实际上是给双方作出评价的过程
7 F' K, ?0 z: P4 P+ Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 z) a5 P0 V9 X: c4 {3 q8 v% ^4 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 y3 F8 t: J  y/ o6 O& B
set trade-record-current lput(timer) trade-record-current
9 E1 K; R( n7 Y5 |/ l;;
评价时间
- L: Z% O  @2 a3 I/ eask myself [8 y1 n' B; i1 l( ~4 Z
update-local-reputation
* Y4 b, G; x* Gset trade-record-current lput([local-reputation] of myself) trade-record-current% q) `7 @. N( r6 b% Y4 ~; v# O9 K- b
]
8 R) O) v4 X  U0 f6 P0 bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ L$ f9 Q6 G+ k' Z4 i. _
;;
将此次交易的记录加入到trade-record-one& \: ^2 w& W# {# p' n3 ]
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; H+ D0 \7 l2 w/ R. n# Clet note (item 2 trade-record-current )
; h, B3 S* m2 D% E, wset trade-record-current7 |2 D' p* g# U# b3 F1 ~
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 T7 j, I% {  B1 o
set trade-record-current' w  H; q" `- x
(replace-item 3 trade-record-current note)
, j% E( B. V: `
' ~3 W- e  a. t$ e% ?, R2 ~
3 z- Q! T7 z1 G$ s0 _: T
ask customer [
: b' S- j6 Y5 gupdate-local-reputation8 O: N# U4 V4 E
set trade-record-current
! ^' Q: s. ^2 P; ?# P7 m  \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ r% |( p# R: Q) P, g) o2 {7 ]
]
# S) Z3 S4 t  T  A$ s5 A! n; ]
" ^& t9 Y% |; ]4 ?3 Y4 x
% H% r2 z  R2 G% ~& s# y# e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ b. M5 N- `; g
' Y$ E  N; @, K( V) ]9 v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( ^7 h; S9 h0 |8 X
;;
将此次交易的记录加入到customertrade-record-all; M$ k, F- [% H$ f" p
end
" ?1 S3 \' p! T- |
( I6 p0 Q; d& r$ S0 y# Tto update-local-reputation
/ o5 T" L9 G+ x* Hset [trade-record-one-len] of myself length [trade-record-one] of myself) p! Y' P- m! v; N0 l& X0 C/ d
6 w( G4 R& @8 c# d1 Q

, ^$ Z2 [+ }/ s& r;;if [trade-record-one-len] of myself > 3
' I# {" j- ~- Q! w  N0 |; w
update-neighbor-total
3 ?5 [8 s3 l% o7 c' [* N/ D;;
更新邻居节点的数目,在此进行
' Y7 t7 P# Y! E! a8 x. jlet i 3* A* d/ A6 {% p4 t9 O
let sum-time 0
5 i/ M* \0 }: c8 w  {& w7 hwhile[i < [trade-record-one-len] of myself]: t* K6 z$ |# v
[
2 [* y8 Q0 A! ?7 fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 {. Z5 v7 V0 Fset i
, k9 `( V3 ]( v% A( i + 1)

0 k8 Z" f+ s( s: O8 S  H' y0 S* D]+ n7 @9 M+ V" X- X  A
let j 3
! H( @$ I8 \/ _let sum-money 0! P" Q( m9 e- o- G1 E
while[j < [trade-record-one-len] of myself], ]) I% D' o6 b+ ]1 d: s- _
[1 \, Z5 v9 ]1 d$ @2 o, ~% F
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)( F6 [" s& {! M
set j# D& l0 x) c( A7 ]; ]" W
( j + 1)

+ V  j: t% P% ?]
2 ]+ X0 h% v6 C1 C, s# glet k 30 G: x/ T" J- Y, G1 y: J# g
let power 0) y% e! A# Y: _, s, z2 o
let local 03 }, W, ^/ s  |8 j  U
while [k <[trade-record-one-len] of myself]
* ^* V7 k+ c+ U[
, \8 q' i/ J9 [: u' U3 h4 D  Q/ 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) 1 B3 |: M! X2 `: J, j6 G+ z6 h
set k (k + 1), ~' v9 J  O4 _& x" a& J
]/ B7 p2 t6 _, F3 H3 T" _. P* z
set [local-reputation] of myself (local)
- @- g9 S9 N0 A2 e' _6 }6 i3 \. s5 eend( c% }3 p1 s6 Z' d& e. I
$ \! d! r, D2 g1 O" j0 c8 a3 t
to update-neighbor-total
8 u  @( `. Y: e/ w& k+ h& g, N5 m. {5 j  A7 y" E# _6 w4 {# N
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ ~/ i3 `  P- `5 ], X* _- O' V. j# S- p% Y! H5 ~  r

: x# t( Z# K3 q: Dend. ?+ C1 v2 Q, l* t

1 g) W9 ^: t! A" i; a8 v9 L& j# |to update-credibility-ijl ' k6 e5 O& `" P8 l, r4 v. H) O

9 t# d. Q$ Z) O4 v; R5 Y4 s+ [( q7 \;;
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。8 n  g2 v( M5 `( s3 g5 ]
let l 0
6 B1 ?# s1 ]6 v4 ]0 |2 B+ Vwhile[ l < people ]; `6 Y/ k6 n9 O' m1 Y2 }' 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
0 g& B6 m8 s2 P[
: z! Y6 q+ p4 slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 u2 G- P1 X2 S! T6 f; bif (trade-record-one-j-l-len > 3)
# q3 ~! u7 k# w% b, N2 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
* O: }7 V6 r  x& jlet i 3( S% n3 Z6 q$ Z) w3 G3 L
let sum-time 0' H0 p8 h$ `' l. v1 D& o
while[i < trade-record-one-len]; J& y  b' h7 L! Q+ w
[( C) p3 B8 G8 h/ L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), t* V2 ^& ]( S) F
set i
% d, X0 S* a+ z0 ^  m( i + 1)

0 |% k/ P* A7 k8 M]
9 p, M' a4 \4 Xlet credibility-i-j-l 0
6 [5 T% s' \$ |5 B$ B;;i
评价(jjl的评价), j% ^7 P% s- a% f) S' f
let j 3
2 {! d4 K/ C4 f% Q3 Z" Ulet k 4
$ M  ]5 N& ~! k" `$ H" R' r# Ewhile[j < trade-record-one-len]
* D8 E- ?% ]. N" G0 W" F3 K[9 y' g: t" O2 A3 P$ 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. e1 ]6 o# M4 K( |
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)/ m; \& @, l" \% P
set j, t) }" d+ k4 K4 f% g" q
( j + 1)

5 o! x( T* i& [9 R]
9 |) K* ^, k/ m0 Vset [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 ))5 ]* O, v+ \1 t: w7 m  _! P
( f: N, @9 g& u+ G1 Z+ c% E

6 Y4 ^" F# a5 }* {' K- Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ T$ e/ }1 R: ~+ d
;;
及时更新il的评价质量的评价8 `8 I7 A7 S1 a. `9 i' p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' _) Y' l6 X; t4 g
set l (l + 1)" N7 |7 j/ T$ M! A% C
]
5 ]0 j9 T/ _* g# }; C8 Jend
1 n3 _: r; R' G1 i, g; W' A
: z7 F( @2 h3 O9 K* [5 [to update-credibility-list
- m% M6 j4 t: E5 d. jlet i 0
0 L0 t9 i, G% {) lwhile[i < people]
7 o/ U3 M! F5 C2 n4 c; P[
& B. U! y) f  d% p5 ~5 C+ _let j 0
: L0 P5 D$ U3 i, i/ \8 Jlet note 0
2 _7 S" u* C  |2 `# `let k 0, |6 S- W/ |3 d6 o% e
;;
计作出过评价的邻居节点的数目
+ q" V& y& G5 W& a' Xwhile[j < people]
5 Y* B, U9 `; N: g! j/ o[1 D: H, }2 g0 R% q1 D
if (item j( [credibility] of turtle (i + 1)) != -1)
/ h- y, }- X: _0 R2 |;;
判断是否给本turtle的评价质量做出过评价的节点; ~& G. _5 A2 u4 V5 M
[set note (note + item j ([credibility]of turtle (i + 1)))
2 j4 k8 k. M  _3 n' f, n9 g;;*(exp (-(people - 2)))/(people - 2))]

2 A$ S0 j9 n2 J% t! y9 Lset k (k + 1)
: p- C' g' f& U$ S- }]7 ]) ]2 v' z+ J- p1 w, r& c- ^
set j (j + 1)7 m  G  R! t7 I2 Q
]
9 a1 }6 `9 |- R- c  Kset note (note *(exp (- (1 / k)))/ k)
2 O, ?+ c6 ^) p; n1 m; rset credibility-list (replace-item i credibility-list note)
+ o7 v$ [( L5 n' L6 @% A( C5 Sset i (i + 1)
  L) a0 v/ k7 J]
" f  W+ Z: l3 S& Q6 b4 [end
+ O2 I* [$ a* J/ v1 @
) \9 v0 E7 q* z& p! `' ?' W: N) Zto update-global-reputation-list
3 k. H& }: E/ p6 u$ rlet j 05 m  k: w" O( U, ?4 \
while[j < people]
4 F( `+ R+ H) G& d: X6 |+ A' |[) N( i  Q) }2 m! ~
let new 0
" F2 s2 M, p1 S7 J5 e;;
暂存新的一个全局声誉% j; c. D! b" O1 S! V" r  K( [
let i 0
' i1 O$ p& {0 k+ flet sum-money 0
( b) D' z. v2 S- l5 d2 Mlet credibility-money 04 S, q( C" w0 h+ C6 n& K; b
while [i < people]" t$ k% q' M0 s
[( X8 \8 N% R- m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 S+ Y1 O+ ]8 q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 {  Z* y. U. k! _% n* oset i (i + 1)
. M! _' p. M, }# M]" F- I& d3 }+ ~  P+ ?9 q
let k 0
  }! `, D; w) O7 X8 a' K+ W* elet new1 0
& d3 |" V5 }6 jwhile [k < people]" W& X; K: @/ }! v
[7 y# b" o* M; B) v; [* \
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): f: D( {, Q# d9 u0 R7 v* {2 j5 {3 V2 ^
set k (k + 1)8 b+ X8 I! |) i/ ~/ \
]
. b% l4 K  L7 V% Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. F9 ~: C2 b' N  nset global-reputation-list (replace-item j global-reputation-list new)
3 _3 Q5 H+ \- P+ v4 lset j (j + 1)
% ~* ~! v  H. _5 a]; a' m/ q* u; Z; N/ |5 b1 y
end
, O1 |# Z! `* F8 \# f" p
3 ^% s0 T9 r. X4 A+ |/ V, O& o$ G# D1 Z+ c' |- e  B

( X0 B. _6 _6 u* g' Mto get-color; l$ `6 \, Y3 r. q* W) _' v- C
7 H: t# \& s0 o+ z7 x$ s' S" L8 m/ J+ Z
set color blue

. d: _, O; a% o: `end
1 x& B) ?' \- K, h7 ~
3 H. f& t: R( A) V% c& V! g: Sto poll-class6 j3 G) w2 a) p
end
- c; d/ S$ E& ^- d$ s, g' F% j/ F* E* }! w: q
to setup-plot1
0 w  r. B0 B) E; B
: g4 J; |/ V7 |7 h* V9 cset-current-plot "Trends-of-Local-reputation"
3 j) C9 u7 q) C; h0 h
" E* h% p: f, D
set-plot-x-range 0 xmax

; ~5 }& O6 S' t6 G6 j" ?: E9 t8 Z! z; Z7 V5 e
set-plot-y-range 0.0 ymax

9 k& Y% p$ W, j. Xend
/ U7 J0 r* J: {! Z8 a. @( C
7 U7 a* Z/ C: C) U  Dto setup-plot2
. Z5 m& [+ J8 w/ }% @8 z" [1 L
: d6 w: n4 g) o9 G) K& M: c1 X- J# aset-current-plot "Trends-of-global-reputation"

% ]9 n6 t6 e' J
. ]' U* i+ X' {set-plot-x-range 0 xmax

( ?* W0 G. Z% P/ S" q/ W- ?% ~6 Y4 n" z) v* V
set-plot-y-range 0.0 ymax

0 o" B* G' Q* p2 b$ m( i- @end
5 u6 x. w0 Q" o! a3 s* d6 C3 P5 V1 n, P! }& m
to setup-plot3
% j; _- @8 m5 h
- M$ I; c4 X' C+ nset-current-plot "Trends-of-credibility"

9 d0 M: o5 Q7 U# y& F! Z5 Y% T9 `" A1 O
set-plot-x-range 0 xmax
* A3 A' [; J& B& r
* D8 C) N! E0 q4 \
set-plot-y-range 0.0 ymax

- t  M/ G3 m" g. w0 [end! U& ^1 V% f0 e3 M

1 D' M& {$ e7 M/ {to do-plots4 S: ^  Y9 I0 N/ M" D6 C9 d
set-current-plot "Trends-of-Local-reputation"
( a+ }( n% B/ K* ^( L+ _- Vset-current-plot-pen "Honest service"
. `# G+ x: t% _: H( |: E! I0 c% e' fend
  \! h- d( M# h+ o7 L4 f& m1 L5 n$ C+ M4 `' 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.
( k# U( p9 Y$ s  j4 i3 @+ B
$ t7 c' H5 _! D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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