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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:
3 M) s5 F! C1 V) \6 ^) p6 m1 B, |to do-business . R( p' ^' w3 y/ e) m* ^' P2 r
rt random 360+ M! d: s9 O8 c! t/ w+ Z
fd 1
8 O! z- ]+ i4 Z% K4 R ifelse(other turtles-here != nobody)[
1 b& z1 [4 I/ f   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.! x6 S+ Q; Q' v0 w8 T1 U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; T' M1 J/ U8 t2 J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* M3 Z6 p# s4 m( G! A   set [trade-record-one-len] of self length [trade-record-one] of self; t$ z5 G0 E5 V  v
   set trade-record-current( list (timer) (random money-upper-limit))8 I$ T& }! ^- I1 K4 q* z

4 X# \* h% [, v! b, b7 f0 q  Q问题的提示如下:
& f" J! [1 l* E# o0 s- e9 }/ N  d; z4 o, k- j& x8 [
error while turtle 50 running OF in procedure DO-BUSINESS. l1 j+ T6 b9 X; E% S
  called by procedure GO
" @. R5 g* Z5 {3 h( GOF expected input to be a turtle agentset or turtle but got NOBODY instead.
: b1 d% s% t, [( N9 x2 W+ E1 N
(halted running of go)
0 o, q. _  \; q( v- f, Z" @! m! E# [
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~# R3 x. f8 ?* \
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
6 X* R4 D7 e3 G7 s% `! U5 Xglobals[0 v. t5 G, `  P; K+ m
xmax, r3 s- U& k: @* B  ]
ymax4 f- J  U% w  W. ?
global-reputation-list
4 E; |  [# s* O2 q
0 r. b7 I* q! x# Z;;
每一个turtle的全局声誉都存在此LIST7 l  U2 \! p$ Z5 b( }( s
credibility-list' q7 U: `: }1 j" [
;;
每一个turtle的评价可信度
- M# @0 g" O: @2 l6 W) xhonest-service
; M( w/ {/ \* ^unhonest-service
8 |8 A* T0 k. s4 i- g6 @& Ooscillation
9 C5 {  B8 ^5 i2 ~# C& qrand-dynamic, G/ |2 P! I( ]0 V! `! O) W
]
& s+ {7 @3 _+ u  @. p. a3 p7 T3 v* I8 f; v
turtles-own[8 y% c+ P8 J: R8 H/ ]- w
trade-record-all
) M7 a% p3 u7 O;;a list of lists,
trade-record-one组成4 ~0 a* c% D/ u/ C, f5 ^
trade-record-one
1 O$ h* q( l) @2 r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 ]% y) e& \2 k5 C# k- l6 B
, n+ I* m0 |- {  ]6 @
;;[
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]]
7 b* q0 w/ \* {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 v; e  W* b7 q. H7 [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% S: U8 t, R2 |5 {
neighbor-total- D3 E/ o  U, A
;;
记录该turtle的邻居节点的数目
$ W4 c0 N0 b' Z! H. N/ ctrade-time) |1 ~/ F9 ]9 K
;;
当前发生交易的turtle的交易时间4 ~5 P: d4 K. U+ _. z
appraise-give
9 r. @' {) q$ M;;
当前发生交易时给出的评价
- f$ \5 p  E0 w6 c7 dappraise-receive
4 |- M3 N  t( N6 `8 v5 Z;;
当前发生交易时收到的评价
+ D; b8 ]0 K0 @appraise-time
7 |- A1 C; E1 R; H& P;;
当前发生交易时的评价时间
  p* r# Z) M8 ?- C% ?1 S" O4 ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ R0 c) B2 ~3 J. ~trade-times-total$ b8 Q$ l. d. V* H0 g
;;
与当前turtle的交易总次数
+ _( Q. o7 j  @- k* y; W& qtrade-money-total1 h( y% {6 V! C' [  |% T2 r4 r8 j$ y
;;
与当前turtle的交易总金额! a+ V% a" I1 ?, q( J+ N1 m* O% _
local-reputation
9 F2 A+ I% z, ^3 kglobal-reputation. u- g5 k5 d8 x, E
credibility" k# W0 [; X. P2 @/ f; W$ J) q7 t
;;
评价可信度,每次交易后都需要更新
; ~9 \% l, ~5 |7 O& z2 Pcredibility-all1 g" [& ~+ F6 z# h; r
;;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
$ x6 v/ z- M( j+ @. S' a: n/ y9 P7 Y! r$ z
;;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
. Y& X; x9 s+ U* d9 q. }credibility-one1 ]$ j5 a1 @, w0 G' \" @: E5 K
;;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. A2 Y3 Y- u: o' T- Z
global-proportion
  D4 l- L( l* Ocustomer/ B: u# N$ h8 J0 B2 U( z" T
customer-no: r  @# k3 w& ?& b
trust-ok3 t8 j  ^: Z) Z! z
trade-record-one-len;;trade-record-one的长度1 e, Z1 Y" @  F
]" O; o4 K, }+ q5 r% ?

# Z7 J. Y. L+ M; U, e;;setup procedure9 _4 `% M; z, [/ j* D9 {; q
' ?% Q+ x( R% U2 X" j6 u- L
to setup+ Q, [+ V) }% R" v
! @1 q& K3 r* P; w. Q6 u
ca
; A6 d2 h, d$ }: s0 o# a$ `& n

( e; C/ t/ \8 ~/ ^) w# O( _! ninitialize-settings
# x8 m* f8 {6 K% s
- a- r0 s# X7 Z, O- H
crt people [setup-turtles]

: H  h! g  l/ D5 o& @0 U
# [1 H/ f& h0 R3 o0 ]reset-timer
0 b" @& _# B$ s5 R1 \% b
* H6 {2 r) [0 b5 @& B
poll-class

' R! C: H* C) q5 V
2 ^9 f; Z  y  E# [) h7 psetup-plots

$ L/ M) }: g" [
  h' G8 l; A; i: l/ Gdo-plots

5 ^" z2 W: C8 Q8 Iend& f! w' `6 {8 W8 A
6 w8 S$ @7 q8 `9 {& _
to initialize-settings
% H/ @5 f5 @* l* b
" Q. q2 Z# {( f( S& n. W: }; \: ^& `set global-reputation-list []
$ N2 t! X+ \8 P  k
; Q& `1 g0 e- {3 w  q* a% D
set credibility-list n-values people [0.5]

' o+ B  Z1 ]' G# f7 F! j; {
0 _0 h" i5 b% q& Uset honest-service 0
6 S5 B+ G; x$ V+ B+ A
7 m& n2 ]* x& v* K
set unhonest-service 0

( O) m4 _! l% R7 M1 O% ?
: E! l2 P% ]( M; P- e7 {) wset oscillation 0

5 n. v5 E# I. J1 A0 y( [$ V( q+ e2 P4 g
set rand-dynamic 0

- k) N; k" r( s( Z) Lend
. M, J9 b8 Y- o8 m9 O) r1 q  B1 V" ]! K% J+ h* o
to setup-turtles
, Z% [: [9 o4 S% F" jset shape "person"
& B! D4 Q: v  u" Y) x- |8 G$ Fsetxy random-xcor random-ycor
+ X1 R" |  w5 D/ y- wset trade-record-one []2 X4 A9 l) F3 x) Z7 `! X
5 ?+ y' U2 d3 t$ z4 @. }9 R
set trade-record-all n-values people [(list (? + 1) 0 0)] " C' ?7 L4 F. u# U2 i
) S  N; k5 h7 U( |: v- o+ ~/ L" D8 n
set trade-record-current [], [# d& _) U+ p+ v
set credibility-receive []
/ h% W; S3 w$ e# T% J6 C. {+ q' {set local-reputation 0.5) A5 f+ q( Z4 M; f
set neighbor-total 0
3 W. }% ?  [( W3 g5 E5 lset trade-times-total 0  r9 f  X% X& P, P+ |
set trade-money-total 0
4 Y% b9 O4 X9 P/ \) v5 bset customer nobody! D! v( y" A4 r3 _
set credibility-all n-values people [creat-credibility]& z( z# z+ F  l: M6 A& X
set credibility n-values people [-1]
- C, L7 T* Z$ F; x0 S  Y5 oget-color
& M4 d$ H6 ?9 ], _, F

" z. S* @2 l8 Z0 dend- w5 t8 ^) }4 d
! b0 N6 }. l4 R5 _9 g% q
to-report creat-credibility: i. t8 W' d( \; l+ Q' ?- S) ]
report n-values people [0.5]5 x9 k9 ?0 n6 ]  k1 o( c
end4 K9 Z4 |1 z# Q& z' e
+ c2 m! c& f9 Y  M% s( U
to setup-plots
# p2 ]" L: c# N5 C0 j! S+ G0 H/ y; Z2 S- e# W8 _
set xmax 30

# W* i: F% A- U1 M8 o+ i1 ~; O6 X% x
set ymax 1.0
8 x' a2 a$ G! R1 _
, i) e7 T7 k- r( f7 ]
clear-all-plots

0 u( Z9 S3 m; m/ G* |% I' U
+ b% U( D& |/ P% k0 m. D* Jsetup-plot1

3 B* [- W, d8 _
4 _, w; N  S. [$ |* esetup-plot2

: l/ t3 T/ G; h- S6 V5 d" X1 q, r3 G; f  O) w# g. x. |
setup-plot3

4 \+ j! g! x9 {( vend
  L; [- G1 V! M4 k* o$ j% `# B* d1 e/ V% m5 y( T, b2 W
;;run time procedures1 S! t/ a* j2 d3 O0 Y. Y3 d' G
" ^5 t" ^% o0 A$ T( l- L
to go
5 e6 ?' G: m5 |1 }$ v6 Y; ^! [# ~
ask turtles [do-business]

1 P( U( T3 o: Y# p: `end: e" H1 A+ R# q! T. [

( d3 x. o6 w2 U: P! L& O0 `0 eto do-business
# }: ]% X5 e. l% V7 ~8 F

0 P3 h( c. _/ q  |5 C8 N6 K8 q0 c6 K4 B/ x& @* |  C
rt random 360
4 E- l+ Z; `& t& ^" b2 R8 A: }/ b* d

5 ?' a2 E/ c) m( Hfd 1
4 W1 ?3 Z8 B3 F3 O: A
8 g$ Y; z/ [1 L1 p  @) j4 y
ifelse(other turtles-here != nobody)[
8 }1 G& E7 ], `  X( O# s% b

( o% B0 p! ?# S* ~, y* o9 m% fset customer one-of other turtles-here

( Z. C  C7 V8 D! ?" g6 S2 Q) q- C( m7 J" X$ @1 E
;; set [customer] of customer myself

6 q2 Z6 K6 p! z# m" l+ }: z  h8 {/ `& r4 ~$ B7 f
set [trade-record-one] of self item (([who] of customer) - 1), O/ S: @+ Y  Y# n+ F' Z( B
[trade-record-all]of self
& ]4 `  x0 w: ]9 S% W, {% o% K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& N* D- M, @  F8 r. q

2 L  v( d# n/ x$ A8 Nset [trade-record-one] of customer item (([who] of self) - 1)# R+ l0 }8 p( ~2 p1 {9 g2 z' }
[trade-record-all]of customer

$ m0 O- q5 l. u4 T
3 v" p2 ^! I, E: qset [trade-record-one-len] of self length [trade-record-one] of self

& |/ t5 w5 g  J$ K  c0 {
! g9 `7 D5 ?# s: g# Tset trade-record-current( list (timer) (random money-upper-limit))
7 a5 E" g0 F+ K* A+ R
+ |( Q. J& K! m3 n9 D( H
ask self [do-trust]$ g$ i# o3 e2 o  s' k& p
;;
先求ij的信任度
) g$ p& m% e9 \( a1 Q( N- P  F8 D6 u. W
if ([trust-ok] of self)
4 X1 n' Q7 }5 B2 T" C- H3 d3 Y0 ~;;
根据ij的信任度来决定是否与j进行交易[; N1 g6 o/ W1 C+ C6 \
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ p% t3 H! \* e# `
1 J8 ?/ i  Q. B  u2 Y' z[

/ L7 E% C+ q. g8 r' i/ s5 p$ B! C7 x$ c
do-trade
$ X" D: v* O  M; ~
7 z! V1 l4 G9 r% c& }
update-credibility-ijl

" o4 m* E" ?8 A. a# \
: F7 e$ n" N1 z- bupdate-credibility-list$ X6 }; x  n2 g- v

! a# U, i* k- T
6 o5 r: {# a+ |$ U. E- o7 I3 [4 C3 wupdate-global-reputation-list
- X2 H' J0 p8 d6 H

9 w* P3 I- ]% w1 zpoll-class

! e# u+ x5 U2 N" D4 w7 I6 L" T4 [8 \! H
get-color

% N: r" q5 U; g  A1 O6 G: o
8 o1 ^5 s& n! j]]) R7 A* j) A! _
3 c' Y1 @, A! e- Y
;;
如果所得的信任度满足条件,则进行交易
& B- J8 i5 ~) e9 a. T
3 U- c$ y9 R6 Z. o5 n! R3 x[
0 j/ L2 T( R2 Y

$ L6 u* I5 q6 C) krt random 360
4 h2 x, U; b0 ~. ~1 G
6 h2 \" k/ k% W# n! X4 z& u
fd 1
  X% V* V: s) P, f

: U4 r5 H) s1 r9 ^]

7 v# t; g9 V' Q1 V; N/ J$ U) H5 {/ @$ \* g) p$ V
end

/ G4 {/ }, E2 T$ H2 Z' m! S& T9 S# z- O8 g
to do-trust
6 E9 d! `4 H9 Y# [* j" c# ], Zset trust-ok False
$ m: B+ W; Z1 j( }5 i6 V# a( Q- p

7 I6 F$ B5 D7 j. T% }let max-trade-times 03 L) F1 f! w2 {0 o6 B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" J* D' N1 ?) P; klet max-trade-money 0
- J  K9 q$ p  R& l$ Cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 U' H6 V9 D. V6 G8 Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) {- M% \0 M$ F
6 G2 ]& H7 J* A# q2 ]- ]! g
/ i/ S7 \% c4 r2 u! g4 g
get-global-proportion) U+ T5 r* i3 p* s* _  E: s. @
let trust-value/ P3 f5 {: f9 s, G1 t' h/ }
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)

1 R( z7 z, a: {" }# Pif(trust-value > trade-trust-value)
0 S. s8 r+ c) ~* y2 O4 Z3 `[set trust-ok true]
0 ^( Z; k% L9 V6 R5 L! Gend4 I8 J  P  V1 X2 i0 F4 n' y

0 x9 J9 m9 H0 j' Xto get-global-proportion
0 {; W2 s: e9 {) fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 x: b- O0 ]0 k+ s/ R' K[set global-proportion 0]
0 c8 u/ n+ A' W, W1 I+ K& ?[let i 02 U8 |8 s2 j2 D
let sum-money 0
: P" `* E! d- `7 {: i8 S) w  X5 @while[ i < people]" ~- o* o3 D. ~- r
[
: h  Q& }2 F# c$ s3 y1 E/ m) s% `if( length (item i: J( ^5 |7 f  m7 R( b* y
[trade-record-all] of customer) > 3 )
- Y) A% G+ V6 C; g0 q6 y5 P9 W" G' s
[2 J  V7 N7 z8 s8 @! h% y7 M. n! y& g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; y! K8 Q  ^. }  Z7 R]  H8 W" O% w, C7 e6 h
]
# g9 D+ q8 N3 b& Glet j 0$ I6 s; X% N1 w3 v
let note 0
, O- g* `! |* t- Xwhile[ j < people]
2 A  k' Z1 f3 L) M[2 Y3 R: a0 W2 D1 Y* M) h' `. V
if( length (item i: P+ d. H6 I" Y1 N4 E8 t4 P. m3 k- ~
[trade-record-all] of customer) > 3 )
3 z5 P$ n$ w  @
[
) Y6 q. h7 m. V" o3 f! _: v# X# ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 e5 A4 C; z! u. S' y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# G- u) Z+ ]/ T9 b" g3 e8 N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 i' V) O, O+ [- ?]
9 t0 g# ?- V, T( `]
: b) C: J6 @$ M7 `$ F% r' p- ~set global-proportion note
7 v" E  p. z$ e' ]  J- v]
9 Y6 S4 `- S  k! uend: v; Q& _. k4 e( D; P5 o4 t1 c
" u1 ~, |# u  ^5 d4 Q" O
to do-trade
9 F) O( Y9 p% I/ b;;
这个过程实际上是给双方作出评价的过程. @, W: O" a( T) Q0 A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: p/ m& X; C/ t& P$ ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 B/ w. k6 I. r# B' I2 _7 Fset trade-record-current lput(timer) trade-record-current
3 D. ]+ [1 l/ b9 c+ V8 Q9 j% R) @;;
评价时间/ Z6 H% j6 T7 L5 s
ask myself [' h' `2 T% ?& H7 s& |, u
update-local-reputation: c7 W3 o% t8 i) s. h
set trade-record-current lput([local-reputation] of myself) trade-record-current& G4 h+ _8 X0 N
]
  T( y* J# y) F, Y% P- {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& g* d( b, u' y" P
;;
将此次交易的记录加入到trade-record-one
: m2 }0 _5 x1 V6 g& ^! \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 C# a) k0 ~: X- I( M) F* `& w3 Clet note (item 2 trade-record-current )
5 Z3 K; q0 |. d# K7 N0 i4 Kset trade-record-current* j) @! d6 }( e1 @
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 a5 R  k% k% v1 Z; P* z
set trade-record-current
8 B9 I; R! X7 i* P(replace-item 3 trade-record-current note)
. k  y, z4 K+ X9 Q% r0 F- o5 w7 q7 Z: j/ ]9 t/ I
- [. z  N. W6 k, c+ N# _0 X; g! ^
ask customer [% Q0 ~5 v% S" N8 H7 V
update-local-reputation
9 V( l/ I" [* d# aset trade-record-current* E5 M0 V0 @8 p5 ]% i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; J( o4 a. A( I+ y* c# r
]. W/ U) b( ?# T4 c# h! z0 c; n
0 U; O2 _9 t, i
) |3 n( D7 }) `8 y9 Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ m8 N! R1 x/ ]: V

2 l1 K7 z" f; k- wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 o9 m8 x: z& z' I' J5 T
;;
将此次交易的记录加入到customertrade-record-all+ ]2 ?  [0 s7 |- Q0 t
end
* G7 }7 L* M( d- m7 z  |! _% b+ w5 k3 i
to update-local-reputation
2 c6 d8 u( ~. \. wset [trade-record-one-len] of myself length [trade-record-one] of myself
: `% Q7 q3 N) H5 v% Y; J3 v
  e9 L2 `2 T$ a6 P0 T# ^; l8 j" K3 I- x5 N2 {: a* ~* p% v
;;if [trade-record-one-len] of myself > 3

# s, I- b3 v" I: S7 |9 V* qupdate-neighbor-total
5 r/ v9 T& s7 \: `! R" C' G: O;;
更新邻居节点的数目,在此进行4 l! x& h/ z$ \; |
let i 3
8 ]& {6 q+ r2 n, h! A$ Y) R, ?/ Elet sum-time 0
6 z: Y; z5 M! [0 q6 _7 s0 c3 K  bwhile[i < [trade-record-one-len] of myself]
- a# o" G) ?* D5 o[
/ I3 c3 L5 E1 F5 W& m% o- Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 k/ {; [% O1 R/ W! K1 u2 Pset i
% `- S$ a7 [& ?6 e8 C+ i( i + 1)
8 b" p" c/ ?' @" D) v( n3 `" a8 z
], J" L. A7 x7 ^/ N' R- q
let j 3- t5 Z$ q! j* z! _+ Z3 f
let sum-money 0
0 P' d( B6 L0 o& I# b- ^6 N- ewhile[j < [trade-record-one-len] of myself]
1 k% w$ h% I: l8 F- S[
8 e, ~% E5 Q9 ?9 Y& S' g0 Z& u6 vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 }7 Q' I) D* X' u: ^) h5 nset j* v9 k5 W. w/ {. W
( j + 1)

( `/ s2 U. Y. f: B$ g, _1 w]
2 ~6 `& V# z& a' ]let k 36 w- x: D5 K! n% o, [! g1 ~! w+ G
let power 0
- ^2 A$ p9 e" flet local 0
; K7 g# y5 p3 X- Y9 b% O2 C7 wwhile [k <[trade-record-one-len] of myself]
. a/ U3 @; Y6 [[, r" i3 D7 s5 `5 {+ V, y+ t
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) 6 p6 S  ?0 M) L; t/ {
set k (k + 1)" e+ z+ G; X, h* @0 P7 _
]
3 [8 }1 J) E" J2 ?set [local-reputation] of myself (local)
" b1 u8 Z  U0 H! l3 v  C# oend
, m7 B) e* N! v8 ]: R8 Q
: {3 @  y& W, w! Pto update-neighbor-total
4 [2 D. |2 H& ^$ ?* {2 B  [: J* O" `" r$ t6 x$ W& b% |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* S# n. c' a$ I9 J+ ~+ v
' u' E; U1 [- I: u

/ M2 U4 ]$ h1 g9 m. @$ ]end) N9 a$ d# g( B5 e$ Y
. W& |# p0 m! G& {# W' W! O
to update-credibility-ijl # a$ o5 i4 b! D* @9 {* K" D/ M
/ K( [7 v- g2 l* E, B. ~" @
;;
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。
& A% \: @( C) k5 T+ ^let l 03 P  d6 H$ y) D6 f- M, x8 A4 z
while[ l < people ]1 q) T5 s0 t& [
;;
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! O" c+ r3 F0 K1 K& C6 A1 ]
[
" [1 ]/ m+ I" |2 u" _( tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 A' B# n% ~; n" F3 Eif (trade-record-one-j-l-len > 3)
0 ]: q! V& `* P5 t" X$ J[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-one6 O+ J5 j2 d# I* l5 o: r3 L
let i 37 }4 p4 c) w, |, I! r1 x0 X# b7 F
let sum-time 0
# v! K0 k# |/ Y- @* E; y; ?, D8 lwhile[i < trade-record-one-len]
" \3 C+ Y: _) z9 J, g[* h8 U6 N. b+ ~* d& H% v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 P; T2 `3 l- g6 }/ kset i
( n! Q% q. M" y# R% W, p( i + 1)
. K" c4 b! c, z7 b0 @7 t4 K4 \
]5 k; v. K: U. \! l$ S; j: N! e! k
let credibility-i-j-l 07 a4 F$ R9 H2 z
;;i
评价(jjl的评价)
& E# X! d0 T& B; f1 u7 W0 Ilet j 3
" o! q* Z4 ]* N% k" ^let k 42 n& D% Q) F; \- g
while[j < trade-record-one-len]
. z, V- |' J. r) z( y[1 O2 P6 I1 S4 l
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
7 I# I- l4 k6 V; E' x; }4 pset 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): J2 o, [( }- i, I0 b, _
set j
2 U8 C3 ^: |* e/ T4 W+ W- }( j + 1)
$ \& x% h( Y/ R! o1 D! ~
]
. j4 T1 L- m, p3 M- G8 b5 c* t8 W9 xset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
2 g- T' z, u' \+ W% Z
8 G  V0 k3 J9 ]
% j9 b, p' h1 \+ q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ ~8 ]0 H$ ^1 T! k;;
及时更新il的评价质量的评价; @6 a3 y6 p1 O, S+ }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' Z& Q. ~. ?; c7 K
set l (l + 1)
1 k9 Z( |4 b: s  K1 {( n8 W]
2 f- T: i4 H4 d5 w3 d; ]end
. _, d0 f# f* e  t# C4 _7 N7 @/ \6 m+ m$ z; \
to update-credibility-list
* }$ X( Y, G) ]0 y- W* g% I& ^9 dlet i 0
, a, d+ k1 {, m! U, ywhile[i < people]
  L0 I- c0 p+ K; B# j3 t% k[0 u6 [0 q( R" ?% ]' B- E6 r
let j 0
# I0 j7 @/ Y3 G9 B! T, ]1 b3 Clet note 04 s' g- j4 B8 n2 m
let k 0
% b, h' \# q# Z+ @; S;;
计作出过评价的邻居节点的数目/ K1 u5 r" E4 t9 r$ p( x) T
while[j < people]7 V# X1 f8 O2 d3 a4 k4 Q
[+ x- ]8 V) ^6 [4 p! ?
if (item j( [credibility] of turtle (i + 1)) != -1)% i$ `) l) N0 y; C& l. ^0 _
;;
判断是否给本turtle的评价质量做出过评价的节点0 D2 c1 p% T3 @9 X4 r: e
[set note (note + item j ([credibility]of turtle (i + 1)))# D" R: t& e4 n1 [2 K
;;*(exp (-(people - 2)))/(people - 2))]

% X3 G3 y( q  {- `3 tset k (k + 1), b9 c/ c' A; @) O9 R% t$ B6 z
]4 B4 u8 @, s& z  v  V& l% k& p1 ?! J
set j (j + 1)4 ]4 X( p2 G3 t# i7 [
]
4 W  m& W$ p! _- ^7 f$ ~set note (note *(exp (- (1 / k)))/ k)8 E: a; t* j) G
set credibility-list (replace-item i credibility-list note)- N! ~. L* y7 ?0 S2 T+ V
set i (i + 1)" F$ k, ^: L2 R( `. K
]
- H% b8 D* x5 O. ]end
+ e0 x3 x2 s- `* Y9 p5 q9 y$ t5 A' _
7 c8 X  P& O/ Y1 z1 I- B5 ]1 T  z) Vto update-global-reputation-list
+ K4 }) \1 V8 W$ Z" dlet j 0  [9 J, }0 O3 C/ q
while[j < people]
4 _- ]( k" d$ d- ~[' F% }9 ?; d2 r. _' o5 V! v. X; R
let new 0
# u3 `" {4 H: B) n6 {! v' j;;
暂存新的一个全局声誉
: i2 u- }+ K3 m$ m8 c( clet i 06 g0 h5 f& _, \4 y
let sum-money 09 Q9 q8 {( ?& s; Y
let credibility-money 0
; a/ y1 O$ g* g3 A- t  q* d0 Dwhile [i < people]: R1 \- S# ?! p7 m' Z0 h! i9 J
[+ C0 s( |# R1 t5 H+ R( |& V( {1 l7 ~2 z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) r( ]) e6 g. v% E" jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): D6 G. L/ Q  N2 ?
set i (i + 1)
& M$ r. i5 }% r( M3 `8 J]
4 @7 |1 o) L- h% N* R1 x. N! z$ ]let k 0& k; W4 T8 @" |/ o4 y
let new1 0
9 F; K  m& f% W3 Twhile [k < people]8 O' f/ Z& A6 B
[$ _* Z" ^+ x. s5 M' g9 q5 C
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)
' S, G& M$ t0 d+ Sset k (k + 1)
# v; E  b( [1 W1 B7 P]/ P8 ]2 y- S. s  w5 K* h0 V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 t& |. q/ ^$ a9 n6 g4 a- K
set global-reputation-list (replace-item j global-reputation-list new)
+ r! Q% T# q1 s& @2 o3 V' i0 M! ]set j (j + 1)1 F5 m, G2 j7 u) w
]: c- i* b5 f4 f
end
) k6 x& @: D' O3 Z
, d" m, x* G2 F4 ?8 p3 \# ?6 E+ U* ~9 [) ~8 ^
. j) x/ i0 `% c; A. w. X5 [2 O
to get-color1 ]  o2 }* l3 L. ?' J" }% S, K

0 O+ v+ ]3 X* x0 f" [. R( Sset color blue

) z: _& q; P/ P# ]end
% \/ _& _8 D3 t& `2 I/ B: y. t/ a" U1 X! f
to poll-class
: p- ]/ e  r+ Q0 xend8 Y: |7 m" l" P; w7 v1 X+ A
  l8 h9 S1 \$ @+ x
to setup-plot1
1 `9 v1 E8 s$ E0 Q# @( N% ^4 t, ^4 o. I3 W6 h
set-current-plot "Trends-of-Local-reputation"

( A  P' m! w" s! ?, U9 c  E1 \0 W' n3 k. k$ r2 w
set-plot-x-range 0 xmax

+ o5 g: l( |' m1 o0 Y8 L4 s" I0 B& X: k& b1 U
set-plot-y-range 0.0 ymax

( g4 H4 }( N& q; vend5 d, T+ u  z% f8 O! g
* l: B! H8 R$ T4 ]
to setup-plot2! O- J4 Q! w! U  E
" \0 F9 A6 }/ B
set-current-plot "Trends-of-global-reputation"

0 n5 t/ s5 i$ a2 @) {3 C9 r% e
( I0 L6 M4 r! C0 g$ L6 Wset-plot-x-range 0 xmax
8 b$ v3 b. e' g7 }
. s1 Z' M5 y, j( l
set-plot-y-range 0.0 ymax
+ ]) h. h4 f% u5 A3 h9 K
end
* m' ?" |! B0 x( c+ M1 M* k: h  F7 u) d+ J* ]% n
to setup-plot3
; O; A" ~. x+ l: X  }8 x3 I' d, o/ D( S# j8 z) ^
set-current-plot "Trends-of-credibility"
, D# p" c8 f( N6 w# j3 q

. S) D2 S/ K5 x) e) U3 q/ c5 V2 a2 Gset-plot-x-range 0 xmax
" F2 P4 j: @' F+ {8 X" b7 \
4 f) |7 e, b0 L# Z* B+ B' v, j! j" W( L
set-plot-y-range 0.0 ymax
! s$ ]# S% o  Y9 T
end
0 q* G/ E0 s( l; A( f
! d: ~# ^  m: N) G# cto do-plots
0 C" j: l$ i! w) [  H2 yset-current-plot "Trends-of-Local-reputation"5 V& l2 ^1 p# w9 ^8 ?- r: V9 W
set-current-plot-pen "Honest service"
; h3 ?; ~) U9 Y. c. E5 N* [end
/ Q# [1 v, P; m" a" t$ R% ^% u6 x  i1 q0 }2 y0 q6 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.
- t1 @. V% ~3 G. }: }4 h5 r
) B0 z* w9 }8 H6 y5 e这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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