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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:
* O: b# E: v& \: }0 Kto do-business
# _0 P- r  P  j% p  `, b rt random 360
! x) E: s, G* k! T: \ fd 1
# \2 C# k' ^' l8 M$ H- W* U3 _ ifelse(other turtles-here != nobody)[
2 y$ ~8 R$ {; c" y  A& l   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.
6 I) U/ b0 |) K  |& U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; _& v, W+ J6 t9 K1 l: W1 K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( C: E, C+ O& B/ n  }% J( {4 R* H+ R2 e   set [trade-record-one-len] of self length [trade-record-one] of self* c9 g; }! f# g& m9 u0 W2 c
   set trade-record-current( list (timer) (random money-upper-limit))
8 R- ~9 v- i/ @0 M
7 g( [) a# w5 W问题的提示如下:
$ C8 U1 d5 l5 }5 z0 B& {
6 Z3 x3 X9 A4 u* e1 K4 _error while turtle 50 running OF in procedure DO-BUSINESS
3 Y% C" |9 B% i. p9 F9 l( u  called by procedure GO' u6 G  M4 E* |3 z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ ^6 Z* x  v* O% W2 `8 h8 o
(halted running of go)
. W( w! B9 j$ ]) i" Q: Q$ B- k# D" V3 q7 k) w; B  O- g5 \3 I8 `
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~~
0 R9 v4 e( \+ H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9 a) }' l' ~/ P; y9 ^+ U8 L+ b0 \& \
globals[, \2 |# J) c5 m. m0 R1 O
xmax
. c' C6 @/ T7 B+ }, t# vymax
: h$ P/ v/ S  [& M; S8 a1 b, sglobal-reputation-list
7 v( J6 P; X$ o+ h# s8 |7 Z4 U. k4 j3 E1 y+ j7 V) G7 w( R# Q- j" ^  Z
;;
每一个turtle的全局声誉都存在此LIST% Q4 N8 I' [4 o3 {7 u
credibility-list# F- ^4 B' s+ x
;;
每一个turtle的评价可信度
1 |/ a% `/ p% s4 P. a# i/ Lhonest-service
, G- Z  {) H5 Z* A0 M9 Junhonest-service
: [+ g$ w6 s2 k  ]9 ]/ x! t; @% goscillation
2 d* G6 Y/ d+ @rand-dynamic
8 J1 Q1 j+ j8 ?6 s# t9 r3 j" Q]
$ [: @% `+ p4 \5 V; I6 M9 R
: @7 i8 z6 |1 n: N, y+ {turtles-own[0 r( x  M7 Q  d$ e6 }- V
trade-record-all2 x" y9 ^3 v2 s& ?3 e
;;a list of lists,
trade-record-one组成. H! j2 d0 B2 L
trade-record-one
% m4 T6 e, ]' `9 @9 K1 S* h& ]# };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, e3 O2 I( A: h: [1 [# i3 D# S+ Z
;;[
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]]
1 c. ]' P: P9 x4 _6 [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]2 p/ Q) e5 L- A
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$ v) W, B1 l6 y4 f  @7 Q
neighbor-total
% k/ y2 m+ v7 E4 u2 x;;
记录该turtle的邻居节点的数目
8 v+ k& ?* [$ J: y- Btrade-time
! Q, \2 |; E0 a- V  R! l;;
当前发生交易的turtle的交易时间
, r  H) p9 k) |: I0 {3 I1 H& `appraise-give
* d) ?. @6 J  c. ^0 i  A, ]" V& O;;
当前发生交易时给出的评价
6 M- s) c, S; T/ Mappraise-receive
# [6 ~. s9 A, }4 n;;
当前发生交易时收到的评价
4 p; a; }; D+ a( L) C# Xappraise-time, ~) ?. n- s% x
;;
当前发生交易时的评价时间8 Q" N  ]. Y) l8 Z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: ]5 y) v' _# o/ l9 N0 ]trade-times-total& f' j& G/ n  v$ Z2 }9 g0 S( U
;;
与当前turtle的交易总次数6 ~+ w9 l  b5 Q3 h( X
trade-money-total+ [& ?: n2 b% [# f
;;
与当前turtle的交易总金额" F" ?+ O) L" f; t+ c& ]) H
local-reputation
1 y7 l+ f- f0 k2 X& |3 j# Q5 {7 Vglobal-reputation. b4 f4 [2 f( }2 `$ |3 ^
credibility6 c7 ?; O# D, e1 P/ m
;;
评价可信度,每次交易后都需要更新
' l1 _5 c2 }$ y5 d+ j/ Y0 t1 |) C0 Rcredibility-all1 j5 i5 @# s1 p
;;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$ ]* n& ~/ k0 Q. x! \3 v5 @
* X+ M  U. c/ Q1 E
;;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) g5 {/ F0 D# s% R2 J) e& q
credibility-one+ y! i, \7 _5 s
;;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
, ?% ~3 L& r1 xglobal-proportion2 W1 A# E1 E0 Z- z% \
customer
7 H* @% v$ G+ x' Ncustomer-no( |! o% K7 t) a3 I
trust-ok
$ ?5 t" Z3 a" S: P' a) T3 z3 _4 S+ ftrade-record-one-len;;trade-record-one的长度
$ g5 H% Q7 ?0 z5 q, B; E]9 G: k( z: }6 U" d1 P1 j

- @* }. B7 n2 I9 ~7 O;;setup procedure8 X# W. n# Q9 C! l4 `7 |, w
; z( V  X9 i! X4 F' m
to setup
: T- _& M& X% c7 ?
8 h  z3 I/ V, u; dca

4 i8 m1 i7 z9 Q& w! N% N8 R& N) l7 P( b' z/ G$ ~
initialize-settings

1 n5 x+ V/ T9 ]" u& [" D. c/ N* s( j2 R) L
crt people [setup-turtles]

* u& }+ F3 @& K& @) \
4 G3 u2 q' j8 Y3 x* E+ ereset-timer
4 U% H, m4 n7 x% ^# G' I- d
" U/ F1 B' i! N5 z
poll-class

5 P* b# E3 g+ g( l/ U
3 I: E0 G/ G9 ssetup-plots
9 W( v4 P2 R' s1 C
9 g* q& M  {7 D$ f# g: g, R, p
do-plots
+ }) N$ z5 S% O) ?1 n& h% t7 C
end. `0 T' @" J7 z% V' n
' M. ^: b$ @+ }: L! E( Q& \0 p
to initialize-settings% @& {) b0 M( h( [: I  f2 z
- ]- t. W  i8 S
set global-reputation-list []
5 s2 w: u$ c% i, U, K! o# l
4 k# q' y1 T: o; Z) y
set credibility-list n-values people [0.5]
% T5 G9 D. t' S, k
+ z+ a. }# o! q) d6 L' j, w; ?' V( C
set honest-service 0
. R- l9 w. v  @2 @0 Y6 u( M$ i

  @7 @+ ~2 O$ K  W1 J6 u2 d7 j9 f: Pset unhonest-service 0
6 k* u- \( E7 |8 D
- l3 s( |1 a7 p, B8 J( d( i* ]
set oscillation 0
& C2 M( G/ M' P3 ^1 v! g

; t% o' J& m% ^4 G* }) Q" ]set rand-dynamic 0

  F' r  t8 ^8 ^end
2 t; c, a' B3 r6 x  @7 N. C/ J
% _$ D+ ^6 P$ z; {to setup-turtles 4 v' A2 |! N9 p: q
set shape "person"9 t# f4 p# T8 M& p. h
setxy random-xcor random-ycor
$ c- Q! W" f" k2 N* ?set trade-record-one []
; v3 x( b/ V2 L( ^2 C
  j7 Z9 r0 @- E! G) o7 k% V& r
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 H6 t' D7 S: s  B; f* f

4 R5 e8 P% P0 K3 Q4 Gset trade-record-current []% U7 ]  t% S  N: _; t1 s7 }& d5 v. B
set credibility-receive []) M7 K8 U0 F0 J& A* O" v7 o
set local-reputation 0.5
5 F8 I1 M" ?: rset neighbor-total 0
/ Z  u( ^( `/ `. s' T! M4 Rset trade-times-total 0
4 o/ @5 ~) W% ?0 }& Sset trade-money-total 0: ~' B* `/ w$ P& P- p
set customer nobody$ E( l4 M9 _4 c$ |4 ~. x. c* I3 R
set credibility-all n-values people [creat-credibility]) Q* T! S' f  q" P. M, {4 @9 G9 K
set credibility n-values people [-1]8 C; w4 @. j- f5 y8 N
get-color/ d3 G1 M! q- ~. r8 I- f

# c) z, I! o; ?4 ]+ Send. i: W2 P1 _7 i0 V/ p
0 F& V  a( H0 O$ \
to-report creat-credibility
+ z! _& l% E% Sreport n-values people [0.5]
7 x& M; ?9 a9 A; `0 jend
1 y4 [* h( |$ N+ ?4 \. S, H6 P& K/ j: x7 {3 K
to setup-plots7 N6 R, }1 ~0 [& W7 V/ l2 I
$ b0 t2 e2 y# I7 `- h4 `/ {
set xmax 30
: L7 L& R* w8 }5 j4 x0 }% [

7 l4 H) c) ]* l* D% [8 y7 rset ymax 1.0
( j9 w9 F3 F# x! P# p+ D
; u! ]4 l1 T( y& x1 z# _, a; X$ U
clear-all-plots
* P) G+ M) L6 z0 t$ D! c
0 |# A( D1 D/ B% W7 s# M
setup-plot1
; V. z+ Q( x0 S: r' N2 F" Y' r# [# G

$ Q# `1 h7 S$ e% rsetup-plot2
) q% a/ @. I/ f+ ~  T, |
) ~2 I8 r& K. O& M
setup-plot3
7 c0 ], C& s& ^8 `0 r4 n0 p
end6 `9 S. e+ y: y# W
0 I2 M- N" S5 x4 {
;;run time procedures
  P+ A3 T1 u. Q% U# P5 {2 ?
  q# r9 l4 }7 Z! q+ ^0 tto go
+ H( R. R. y; [) c, W8 C" O+ A/ Z
ask turtles [do-business]

3 V" r4 z! D% Pend0 s6 c( E4 {  U& i% {+ c
' C! i6 t: }& ?4 k8 |: P
to do-business , [. @, R2 [  w# A" e9 P9 q4 p
% ~' l+ X8 ~9 T- y4 ]
4 c8 \) d" y* K& q. c$ C1 W  a
rt random 360
9 |  V6 E( D  c; f

! V2 z2 k5 _, V3 L; J$ O8 }fd 1
6 d% t, d( o# i$ O7 I9 S# O9 i
& @3 h0 u6 p& H% b! l# ?
ifelse(other turtles-here != nobody)[
) ~4 S2 v* O& e
' @0 a8 d7 W# r% \. ]
set customer one-of other turtles-here
( s/ G/ L3 T$ |$ [# T# f
8 z- i) l1 D% z- l/ f2 s
;; set [customer] of customer myself
2 _9 I& v9 D* O0 u/ Q* k. }
, z; ^3 u- W+ B! e3 {1 H/ u* U1 W
set [trade-record-one] of self item (([who] of customer) - 1)# T6 |5 l$ g( X. `- d" p, R& B
[trade-record-all]of self
9 P& V& f, \3 p; K/ G! a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ ?/ c/ u0 ^/ x/ F, K- V' @7 m3 R, `% c
set [trade-record-one] of customer item (([who] of self) - 1)9 @2 i# A: O7 Y# c
[trade-record-all]of customer
, E; M5 Z! j8 ]! R6 a7 o; M3 g' D

  c# O! H  {8 D/ L# {$ J) oset [trade-record-one-len] of self length [trade-record-one] of self
8 b, A# n/ p; d! X" L7 u6 L% P- s! I

1 j7 X/ r+ ?5 G4 G8 N3 F- T/ y4 @set trade-record-current( list (timer) (random money-upper-limit))
. y( v% j9 e2 D9 Q2 a

( t$ }/ x! l  m: C! e6 s& x( Bask self [do-trust]
- D# v. G# u' J, y4 I$ ]9 J;;
先求ij的信任度
/ ^% q8 O8 g1 Q8 f4 k
" m: g2 h( \8 C; R: b& P. Yif ([trust-ok] of self)
" e5 E& n$ C% q1 F* j) ~9 H;;
根据ij的信任度来决定是否与j进行交易[( |4 L) g8 ]2 o% W* R! J
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 P( \5 y% I1 T# d+ W% r) G% H$ A

& ~* [3 _4 N& S' M! K[
+ y; g  d/ p& W; Y, H4 E( v4 n( R1 E

* |& d- l, m! x% L+ tdo-trade
) ~9 U: v# p+ _# I( S
/ t* F  K* o1 C$ V  ~" b2 @
update-credibility-ijl
1 v* U- f7 L, z

5 n- W% u/ e3 ^3 [6 e% l, ]' `update-credibility-list
9 Y6 i) q8 I" R# S8 a9 [4 o0 B
* B6 c1 X+ Y- M- |

8 L$ G- w3 m8 M9 {8 {' N$ tupdate-global-reputation-list
1 x% q% P: c$ I
2 i# B* {# [! D, e
poll-class

! L$ J$ D9 Y/ E$ N
' ^5 U1 [/ e8 P7 uget-color

# N# O, r4 s8 _$ h% I% H+ v
! x, Z& T8 u$ x4 x$ Y# w/ L]]
4 _  W8 ~+ P, y% |0 V7 o) v
1 q& f3 I  m2 Y8 y;;
如果所得的信任度满足条件,则进行交易
# ]+ q4 E/ R8 o8 M1 d: h8 D6 l+ N. L) P% j) ]# _
[
6 h* y9 l& s/ J- w. k6 G5 b2 s
- w$ [: M4 K* f
rt random 360

2 `% W7 d3 S9 m3 h
2 e" x& c" i9 M' @fd 1
7 O: r" ^& V' t4 G0 I- G

7 ~% q$ Y: Q- N]

! C1 g: m, i) O% a8 S6 m3 A! \7 ~, E% e. P& f
end
( }& l5 K8 w  H( z

2 U( y3 v/ i" h) a( J4 {+ [to do-trust
% `- f0 W) ]# f7 M) i1 @7 y6 x9 {set trust-ok False' o- K% E. N) [
% C' R" q& q2 C, g2 B3 w

# `; v9 O0 B$ H3 z, R1 ~% rlet max-trade-times 0
: O6 M- `% }) `: kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- I+ A2 Z6 V# C0 S+ I% D& _
let max-trade-money 0: |3 t7 ^' P' Y- R) ?, U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- ~# x+ R* y- T: j2 S9 K& o
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), ]9 P" p: R7 o  i! A

" @$ u% _: w; L0 y
$ ^5 m6 J+ |$ v0 r% N8 Y
get-global-proportion7 E2 f) {7 [6 I. V
let trust-value
6 ]! d8 J8 E& {: ?. }7 _9 {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)
( ^( n6 s. M6 W  m  H6 F
if(trust-value > trade-trust-value)
7 o& Q+ P5 F1 U' Z. T  X8 [8 R[set trust-ok true]
$ ^/ k4 d1 p# W/ wend
5 T# D" m0 \$ ^/ ^9 y3 M* I9 N. X( f+ @# y
to get-global-proportion
1 o6 C+ W+ q2 L3 i5 y; G& |# difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- O0 s5 W; D- Q9 J0 A[set global-proportion 0]& n4 z: j* Q2 g( G2 S- H
[let i 0. Q* z4 ]) k8 a) E4 g6 o- O  o6 T
let sum-money 0
3 O) B2 u; b) m' u5 N) A, Lwhile[ i < people]3 v& |( r8 ~# G5 ^* N  T; q
[
8 w+ ^2 b; b# ~0 z4 t, uif( length (item i
" w2 e) P/ O- R# t0 j( p[trade-record-all] of customer) > 3 )

$ w. A( Z: W% g3 ~, I. O- z[
' K  T' l$ M# S$ x/ b9 D1 x' ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; z& L  v' P7 E]$ V1 S3 z, A" a4 ^
]
" Q9 Q2 d. x9 F, Z+ p  glet j 0
. ^7 P7 ?9 q% w+ v4 xlet note 0  U0 L; R: z. }9 P0 U, k$ ?
while[ j < people], R/ a: t8 d# A6 q9 L- c( \, r  J
[$ o, Z! i1 F3 O! W  a: s/ q' h
if( length (item i
$ _7 p7 Q3 F  J[trade-record-all] of customer) > 3 )
, ]: |7 H& y" q- x0 z
[* s* m9 G3 f; A( R4 i& ^$ T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: ]( @" k6 m6 _* p1 G: D/ Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 j; C9 ]+ @8 k7 z, h& U. `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" J  l7 Q( T: I$ K# [! }4 ~; i]
. z! h, c0 @. \/ j+ U! z]
3 S. c) `5 A) Zset global-proportion note
8 X& A# i  v& p2 w. r1 r9 A]& x9 k% ]. q. v
end
8 O0 y( `8 p( b% ~1 m5 w7 y! P! d3 ]' t! E$ X, X
to do-trade3 T$ {2 e/ q' v  F
;;
这个过程实际上是给双方作出评价的过程) \) y* w" G+ c4 R. s. H% w  G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 D9 t2 }2 \5 Z& B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 T. f2 u4 x" @: o+ sset trade-record-current lput(timer) trade-record-current
+ T1 C* r) E- k& w4 f;;
评价时间
9 A% N/ U3 |& |+ Zask myself [( _" o4 [% g) s8 Y
update-local-reputation# x5 k+ h# i) _  ?
set trade-record-current lput([local-reputation] of myself) trade-record-current) @$ o/ g8 b! T8 e1 q2 a4 l4 L9 C
]( ^% P7 c6 |+ x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, ~0 |9 ^7 `9 e1 |9 K;;
将此次交易的记录加入到trade-record-one% }: ^  J' P" ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. N' G9 @; Y4 A' s& S9 b8 |) vlet note (item 2 trade-record-current )7 F6 N3 C/ ~" k+ w7 s! U% M7 w
set trade-record-current
- X' p( w$ o9 ~, B0 _; d1 n7 U(replace-item 2 trade-record-current (item 3 trade-record-current))

* D( J( i: p( Hset trade-record-current4 T) N( ^% ?" p; u/ F' U4 }
(replace-item 3 trade-record-current note)
9 x7 Y2 x* o% {" _0 U9 \% I( Z7 s! H! T( p% ^/ ]3 O; _+ b1 [
" Q, S+ m: J. i( }
ask customer [
% T1 F/ Q. K$ N: Wupdate-local-reputation
4 c8 p$ y9 a2 {4 N6 r- Sset trade-record-current
2 p9 h. J/ }+ k' q7 R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 s0 q. R' c6 C; Y7 x, ?
]
7 F2 z' r3 \1 h! k4 s# P
" E% f, }9 |3 l; [% l2 A* s

% n" V: }; _$ D+ o7 B1 pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( M) q2 q. w4 B  ^0 }
8 E" u* t( Z/ y9 G% ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 Z2 x; q/ S9 ]7 x6 Q" F/ o: d5 B;;
将此次交易的记录加入到customertrade-record-all
8 Q$ N4 b0 z# Aend5 s, `$ P& M+ _  {5 s; y/ i

6 K. W6 k/ A  Mto update-local-reputation* W. W, z! |# L7 h
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ f7 I. K. x3 \! w  K
' g4 w8 u) `3 `  Q: c: l0 k, I
+ |' G* ]' ~1 S3 p" |6 t3 J! k;;if [trade-record-one-len] of myself > 3
* c4 `% d0 ]0 o4 d) l: y" Y
update-neighbor-total% T5 I* W- ?& W* T
;;
更新邻居节点的数目,在此进行5 ]2 {+ N& ]. j5 B/ ]$ F
let i 3
7 g7 H2 M; {2 t! }& n# l2 Wlet sum-time 05 t6 c* R( S0 C0 R7 R+ r- e
while[i < [trade-record-one-len] of myself]
% f0 Y( m4 U2 ~8 X/ U+ l+ ?( C[7 u% K$ O, W& X  m
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 u+ R) d, ]4 f  p6 m
set i
" f' o7 O/ ~  U& I8 b# M( i + 1)
1 f$ U' N( Y! ]4 G* `! p
]9 S  s. D* \* y0 f3 l. w" y. e0 |
let j 3! F. J1 U4 D/ y( {; D. z
let sum-money 0& U' f4 r8 o. ~9 N" e/ w
while[j < [trade-record-one-len] of myself]
& h0 M; K+ b" g/ u. G- \6 V[
( @: C2 O8 T3 g9 \! k/ t1 R6 ]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)* t# y" C4 Y+ ^0 w% O6 X- k
set j
  D# d9 ]3 I8 m; _& n! S6 U( j + 1)
4 ~* F, |4 n  e0 i% m
]# |, a6 U& ?  _$ T$ L! C
let k 3& D( x* I  k  ]5 O
let power 0
8 K/ z2 o3 y1 q: p% vlet local 00 L; P- @( v, l8 o; \7 R0 a% h
while [k <[trade-record-one-len] of myself]2 ?% c3 q8 S5 [5 [
[
0 q% D9 H1 \" w1 Q6 q# X3 }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) 2 j7 ^) ?; ~' m. I; j
set k (k + 1)
, [' G6 n+ z, X) n- b1 C2 F]. M  P1 G( }6 T, B1 e
set [local-reputation] of myself (local)
$ k( O. B% d/ y, a3 N7 j! a4 H7 kend! v" _4 j6 H" l; J& _- L

& _& }& E% \: {% X- T( Tto update-neighbor-total
3 o) C* |+ r! U& z! y/ @
; N" U7 b" Z6 o- Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  s% e4 h4 }4 [4 D% H& u5 @4 [

1 P5 ]$ }7 [( z$ D% E

; J; v7 [3 Q1 R5 Qend) p9 u6 N0 c1 h  d1 o4 o8 v4 C6 L
" X0 R- V4 K0 p
to update-credibility-ijl $ x6 \1 o5 \$ u. u" o9 G$ i. y
& X! G9 p9 }' I5 T2 S( Y' ~
;;
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 B2 ]* I, k$ S
let l 0- b' N5 e* D) R& D- [$ l
while[ l < people ]
2 k* D$ W$ J4 C+ ~$ a/ i;;
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! {: |: v& @; m8 I$ i% U! f* @: [& `
[
: y* O( [+ W: Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 e  D& Q3 |& u$ P1 Iif (trade-record-one-j-l-len > 3)- ~0 V& o4 m0 \" p
[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
2 j& A2 \' E2 [& p0 [' x! e% J0 jlet i 3
9 Q' ?& Z* a; hlet sum-time 0
6 I! t; \9 N  \/ t% L6 ~& Q# fwhile[i < trade-record-one-len], a2 u& Q% U) }2 ?
[. i' l3 @" V% Y/ b& M% {% _, j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 W+ n6 @( ?4 `; T8 D. Nset i0 y/ @8 g4 C/ A8 S
( i + 1)
, Y2 K: |8 @- v0 U. g7 G% y
]2 A# m& G$ R4 ~7 n: b' j- Z
let credibility-i-j-l 0# h4 M9 F* e6 J& Y: F
;;i
评价(jjl的评价)) J  ?. i5 w2 c  a9 J$ W4 m
let j 3. S# x; @0 j; v3 l0 ]0 d
let k 40 h; z. I$ L; z# @
while[j < trade-record-one-len]8 G& n+ i" |$ ^4 I5 T  P
[% O8 F8 |2 y+ e3 C! `2 q0 ^
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 r$ l$ b- o1 \- J; [
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
3 d% P+ W) h7 B+ K7 Hset j
5 _4 e9 z5 p: a% T7 l( j + 1)
* ^- i- `8 U, _& E
]
2 w9 Q3 s; u$ F- N& L. I4 n( Zset [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 ))% a* i! J. a8 k: t. F  \9 D# N
$ O' z/ T6 [/ c' t: o# v. a7 b

8 M& K* R3 S5 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  \) O: V# f- r;;
及时更新il的评价质量的评价- {/ Q# d" G5 b/ s8 m7 ~* y% W
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 M$ q. C5 F8 }4 ]  |" cset l (l + 1)7 X# U0 j: z6 q  x& g
]6 l6 A8 s; X9 p" \8 k. a
end
9 s# ^8 r* I3 m5 ~$ j8 r! o! n) c8 x% \* C  t) F$ Q
to update-credibility-list
- O# M, ]. |' C% S  V" |, zlet i 08 O9 j0 ]7 g$ i6 a% |
while[i < people]( e7 T1 D7 j' `* Y
[* D+ e4 y$ T9 [3 U& `
let j 0
, M. E4 P) S! l: J, Z) T& T% dlet note 0
0 z  [3 n2 d% S+ A) rlet k 0! y  I" S' x. Q# `# h% j
;;
计作出过评价的邻居节点的数目
$ \, B2 w% s! h. [+ u5 N& Xwhile[j < people]
; z4 c( h0 Z. S$ T[
! _$ [( ^1 S$ eif (item j( [credibility] of turtle (i + 1)) != -1)
  Q( M* W6 ~2 ~- X. q, u;;
判断是否给本turtle的评价质量做出过评价的节点
3 _3 F1 G: A1 z( Z8 R" u) b: |' R[set note (note + item j ([credibility]of turtle (i + 1)))0 [' ^' j# T* O( }
;;*(exp (-(people - 2)))/(people - 2))]

; h2 ^# ]4 |, `2 O' [: ^) wset k (k + 1)" ~# T, w0 d3 [- t/ p1 W9 \6 I
]  k6 @& \5 P% ^8 \7 p( N2 @
set j (j + 1)
6 T- C2 M5 I: P- ~: z- t" x]
& k( K! _$ h( S7 pset note (note *(exp (- (1 / k)))/ k)
  {. i' s. m% B7 J" _- Nset credibility-list (replace-item i credibility-list note)
2 j. f4 C. a% E) ~9 P( |; ?+ D! sset i (i + 1)0 ]9 k& A8 ?4 V9 K
]
+ q) W  u8 [- Y! ~) Rend, N' m( O0 Y# Y8 j, p+ s: l

2 }/ g/ c# q& h% V6 A/ @5 qto update-global-reputation-list
0 r: T6 _& a! J& y2 C  G4 Slet j 0  G$ Q2 n0 ?! x' G0 ^1 |
while[j < people]: [  y" Z6 _* r- K4 X: c( z
[
! u1 {7 K( F, `# e1 Q$ w5 N( Flet new 0
# n, w" \9 K8 V, [' ?7 j. E;;
暂存新的一个全局声誉
9 l) p- t( Y# Mlet i 0; h  v  ]4 \% B" K! X  F1 p- _
let sum-money 0
: ?: U8 y, _% s" L' R! j$ nlet credibility-money 06 f, G! b0 [# G. x9 Z7 ?! @
while [i < people]4 _0 K' c5 E& Z+ p, F; M
[
: k8 J- ^) M* y5 r2 Iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: Z9 S! ~+ P! Z& A4 ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 C! g) c) y8 fset i (i + 1)$ Z; g+ }7 C$ `) z# C) j
]- d5 _3 z3 p0 L! k- _0 I8 e
let k 0
7 M% l3 }, S6 \1 ?4 llet new1 0
: b8 b/ C6 U1 E) q+ Fwhile [k < people]7 A5 m, V& @: J
[0 k2 v  S1 t& [+ i
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)+ P* W6 x6 A8 P7 A0 N
set k (k + 1)3 \0 s6 ^' W; t' q5 p
]: C7 p% V" |, Z: K5 A6 O* Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. p; N5 Q* J4 a1 N; K% s. S4 Q+ wset global-reputation-list (replace-item j global-reputation-list new)
7 ^7 k/ c: `3 n% Iset j (j + 1)( j* h0 d$ i0 d" ?2 B
]
5 J& q$ y3 \7 g. @+ P$ T- vend
1 o- G: i0 ^9 {- S5 n! S
: d- m+ L) L' B' E/ H: g% A- s4 U
1 v$ M" [1 F$ Y5 J& \( y
5 j4 g8 P7 @( J( h- d" Nto get-color
7 N9 b; I# I7 h% s: K# t0 Z" U: `" z7 m* ?* `4 z. W
set color blue

' ~; L* z" ?2 m% D: n+ `# U. W$ hend1 y6 `- M4 h( k
9 J$ C8 d& m; w8 C4 R+ x, i# N( p
to poll-class% ?' A8 A6 N4 q7 `8 z! _9 i
end6 r  f0 ]4 j+ |

4 L, Z: T4 L/ o8 z& Bto setup-plot10 N4 ?. T: g6 t2 h. C' ?1 p. Y

# x& s/ n1 h8 g7 ]set-current-plot "Trends-of-Local-reputation"

3 L9 N- F, Z2 @: N/ I
. y) [* ^6 K, i# nset-plot-x-range 0 xmax

# |! d% X, t1 w# d7 [9 D7 m2 I  g
set-plot-y-range 0.0 ymax

( @# x3 N: D$ }  v4 d& X0 Q  Bend
( q" A4 E- y7 [; |" z( V9 |8 E, y2 B) C0 t
to setup-plot2
6 ?2 }3 s" ]8 {' [% m/ r7 |
3 U  I: m+ F) ?" }% Z# gset-current-plot "Trends-of-global-reputation"
. V3 n3 H1 Y: U! i5 V5 i! y
' Q% V9 @* ~, L1 ]
set-plot-x-range 0 xmax

9 K7 J6 d. ~8 Y3 j2 z; k* o( L3 R5 X' ?# l& S9 Y' V* u4 o
set-plot-y-range 0.0 ymax

; i) ?7 a6 u! n& ~. Uend9 y8 B* g2 X+ r- A9 D+ F" w$ N

( x- o" S% v, J' s; n# X. D. mto setup-plot36 C/ S& j2 e7 z2 P
- F0 x$ d0 v  G; g9 a5 \% h
set-current-plot "Trends-of-credibility"
9 |& \$ r/ H3 s$ A/ V

. H) K9 ^! p6 bset-plot-x-range 0 xmax

1 U* j3 o. J5 D2 v) U/ Z& J
; F% ~, V3 _- T8 K) e/ c% E) N0 Rset-plot-y-range 0.0 ymax

; w+ L1 C' \& gend
. M, F+ r2 j) \# k/ z, I* z  u/ g' k4 a
to do-plots
; e6 {' k6 ?* U' Jset-current-plot "Trends-of-Local-reputation"  T/ y/ P: [. ?
set-current-plot-pen "Honest service"' c7 s" {9 n0 W1 V9 N/ ?
end3 L, A  c/ ^, M) o% T% O% [

, m$ r0 |# f9 ~[ 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.
% e$ h7 |# t& ?: ?) X* \
# U9 e) R! F7 g, |! j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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