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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:8 o- ?8 K6 }' l/ T
to do-business ' ^1 x) b4 `# i! |3 q
rt random 360
1 z8 ?( Z9 C/ ]1 Q/ D fd 15 J) a- V2 p  l- [. U) \
ifelse(other turtles-here != nobody)[- L7 D6 p: X1 K+ F) d
   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.
( v, c9 E2 ?0 E9 e5 a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 k& g+ F  U, t+ o4 w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' C9 z8 u$ g4 K
   set [trade-record-one-len] of self length [trade-record-one] of self6 x0 S) q% g# x2 M* ~" w& q
   set trade-record-current( list (timer) (random money-upper-limit))2 D' j! C; [$ M3 X' w5 Q: Q
* G5 e4 j8 ^7 |& H# B5 j  p, z- O
问题的提示如下:
2 l$ u7 Y. i( ^4 Y9 }' u" c' m  j1 N9 Z+ \/ W4 M& d. K% z
error while turtle 50 running OF in procedure DO-BUSINESS- x0 z7 C2 A/ u7 S! J( a& y* B
  called by procedure GO0 z0 S, [3 ?9 r5 ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 D. Y$ _9 y6 X3 K8 Z
(halted running of go)
' \# n  |" R! W' r- H! k6 f5 ~4 V. z- \3 r/ F! |/ p6 a" M
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
! v- s( {# i" x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
$ x0 ~& x0 d' m9 K. v1 ^, Gglobals[* h6 B0 |& r; p& t% `! L4 N! y
xmax
7 P( }$ O9 N% N9 n" U1 F. V7 bymax
, g0 V. F: H5 L8 c% oglobal-reputation-list
6 y" n3 s9 e. A0 m
7 O" P" C, l# `' |" {8 V;;
每一个turtle的全局声誉都存在此LIST( {5 C: }6 k4 |+ B
credibility-list. v& w4 L, P9 ^3 Q( x2 H3 E
;;
每一个turtle的评价可信度" ^7 W- x! g- g/ H: H
honest-service+ A: D9 J" E5 ~9 w+ \1 K
unhonest-service, g" S& F3 d, U! K/ j
oscillation
  U3 t1 g% t. Wrand-dynamic/ m9 [6 X% W4 C8 x: w" }
]- h: M- N8 E6 y& h2 x

4 |/ R2 \) G9 U- R8 Eturtles-own[2 s2 {( S' V9 g1 c' Z6 L
trade-record-all' b- R% z1 x5 t0 _1 `0 G
;;a list of lists,
trade-record-one组成/ E9 D) E' ^! i! H/ Q; \+ R
trade-record-one' J8 ~( m, @1 O6 O/ f7 @% I. H6 |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 M1 T: B$ S% h' _

2 N" B. I# S7 O;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
. b6 X5 L: e7 b8 N% ~- g: wtrade-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]3 J8 l% m* U/ i  I" C
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list3 ^! f/ c, H) E+ r
neighbor-total9 k0 }2 a" g$ s
;;
记录该turtle的邻居节点的数目6 ~$ P0 L  R; {% K$ h9 U
trade-time
/ ]+ |/ A! v3 Q( j9 f4 `! ]0 q; r;;
当前发生交易的turtle的交易时间, Y1 P! v7 W& l/ ?4 i; O4 K
appraise-give# @0 _- b: F9 _7 Q( v& M' v
;;
当前发生交易时给出的评价
# p* R0 j( U0 i2 eappraise-receive+ L, z$ W: d% @8 O" v, y
;;
当前发生交易时收到的评价
" D' l5 z; I% ^$ [% {" R9 ]/ f' Aappraise-time
  T9 O3 j' w0 E: A; t" h1 |;;
当前发生交易时的评价时间
( w- ^3 @8 {2 t  U' w/ J  Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 E4 L; j2 D3 m9 wtrade-times-total
- N4 A# v0 J7 R4 M;;
与当前turtle的交易总次数0 y0 L: k3 a. o: a: d! C0 c1 b
trade-money-total
5 P" r$ ]! b& ^, w;;
与当前turtle的交易总金额8 g9 p2 E1 a. ]0 n1 }# q- ]' f
local-reputation% m5 A1 S! |' N) {
global-reputation5 c+ o' `$ A2 F' U8 Z
credibility
! v, Q; H" ]5 z  `;;
评价可信度,每次交易后都需要更新7 r6 z* K3 }2 z+ t/ b0 M3 e
credibility-all3 [/ L$ m, K2 H1 `
;;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
3 I8 B8 n5 O1 q& _+ n8 G+ a
+ X" |( ]' B& M& n9 W% v1 l5 K;;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0.54 W- o6 ?3 N0 o$ n9 W
credibility-one
2 l0 J" C( p. ~$ [/ d% R/ @& ]; J+ u+ Y;;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people7 Y' t% [+ L% `: e7 x6 q0 ^
global-proportion* T  x8 ^$ V7 @( m* M4 h3 h
customer
# j0 w+ u8 y1 d! @. V9 Ecustomer-no- W  o6 s" f0 O
trust-ok6 N/ G2 L; t' {0 Q4 J
trade-record-one-len;;trade-record-one的长度
5 z% e+ n8 J+ j, t]2 X2 A) x, d" A' K4 z% O
, |# P0 O; l8 c- a
;;setup procedure
: o, L5 h. c2 F' s( m6 R
7 i0 ]8 y2 s/ k. [5 k8 Tto setup% m, S0 x( k3 d" Z/ G& Y5 }
; H9 Q9 M3 p8 L
ca

5 M# J. @9 x. s2 T$ \  ~9 Z0 T& A
initialize-settings
6 J- e8 S" r' t% O# Q
* @! I- b2 D% v3 ~& |3 E$ X
crt people [setup-turtles]
8 T5 ?/ U0 Y% M; L- [

& ?) G9 s3 h2 K$ x, R) p2 r& Z" wreset-timer

2 s& U3 w' R: T) C9 Y
( v& L9 x. I! \  z. z" W$ Bpoll-class
, L$ m3 e7 _  q" ^7 Z

" s8 [9 k; l, t0 ^setup-plots
, h$ ~$ |2 r3 k2 k& Y/ d- k# g6 [+ ]

9 [, ~8 O$ ^& J4 X, Cdo-plots

5 ]9 \% l0 a7 i  s8 ?7 }end$ z# k/ T* ^% X; O& k0 u" a9 B; V5 l

$ I. B' y' {/ r& ~: q- W* X  \, a) Bto initialize-settings; c' n2 G1 Z6 T$ @; `- l
# C. {" y& x& g) }# h# B1 ^
set global-reputation-list []
# E: Q% R- N* s  Z

! T' s- n/ }5 x$ r' kset credibility-list n-values people [0.5]

# _. D) j0 U8 G0 ?% Q+ E- w, W$ G3 d' x6 u! X
set honest-service 0

0 ~( ?  ^1 i# M: @2 |  M5 Z9 ~- B+ v3 m
set unhonest-service 0
% x2 C. Z7 M% S
+ [3 Y2 g3 U- F1 v& ~
set oscillation 0
, [; Z6 d+ m8 }; i  Y" u/ ~

. Y4 e: c, E( i9 wset rand-dynamic 0
+ {3 ^* M  L3 j$ a
end
0 D! _2 {1 [2 Z6 m  v% s$ P
* E& X3 W9 {" `4 uto setup-turtles
" h" ~! i4 f/ W# {  M" |! Rset shape "person"( z1 l" r! i' Y  r
setxy random-xcor random-ycor5 l% _# w8 \. w  h  N) M* J
set trade-record-one []2 A: L  o. C6 o3 m  x

# x8 l* m& I: d) Lset trade-record-all n-values people [(list (? + 1) 0 0)] . w* ^* G% ^  x/ H% y
; C# @7 T2 L2 \6 m
set trade-record-current []
& z/ K9 b/ ?2 f' O5 n" C6 v% e1 Lset credibility-receive []
2 N5 \! [( Y& P4 |0 I# kset local-reputation 0.5
. Z+ n' R2 T0 c5 U7 ^" Jset neighbor-total 0" c- s4 [( g5 [# A; m6 f
set trade-times-total 0
9 e9 C# W' F8 {set trade-money-total 0
* i7 T1 g6 Z) I' W* y% ]6 Eset customer nobody
+ _  T0 A  S6 _9 g& ?set credibility-all n-values people [creat-credibility]
( ^8 j" z( P( _8 O$ e' o) ]- Bset credibility n-values people [-1]4 c. \, K, O# `  b% B9 A
get-color. }' P+ h' a$ o; T, H: W' A8 f0 K

. q5 }4 F$ [/ |2 send8 \+ Q: r1 ^( E! {! |; }) h  V% I

0 y& _; t, ?0 O- e! Sto-report creat-credibility
8 C: m; B* q* N3 G5 x* sreport n-values people [0.5]& ?/ g: z0 t  l/ P, {1 r/ Y4 F
end( t- O( W2 m) Q. k

/ |1 O+ R4 \0 E6 W% |: {to setup-plots8 h. R- G' x  F
; o$ J+ `1 V) m; @- A  ~) F( C) @
set xmax 30

# ^! Y# B4 U% j
: `- I( A3 c5 z9 q) ?7 C' _" tset ymax 1.0

, J4 K) v& y8 U" N8 W* Z& `5 M
7 h0 @) R. Q; m9 aclear-all-plots
: r. I+ V( |' Y6 m
2 F) h+ {6 a) f- T5 ~; {& u, S3 C
setup-plot1
9 s& t' H) t9 ?3 F! _& y
' i4 X" D. X/ {8 `
setup-plot2

, f; ?' d7 d% h% W8 ^; Z
' L2 ?) R" [- ?7 s/ Vsetup-plot3
( R( C* `9 a4 C, @$ p
end7 y1 j# C* |! T3 t8 U2 A* B$ V
- I/ L  ^) F% H1 j9 U* ^
;;run time procedures* M0 s; e9 i, j# t4 F
, ^7 |9 l* q, q1 q8 ~
to go  E7 I4 _* I4 S, f. Z0 P

2 ?& X0 u( E" C+ y! A3 `ask turtles [do-business]
3 s& g+ X) z3 C, T4 g$ H/ @
end7 m- o. i) ]0 p# ^6 t& U9 G

3 C3 ~% X" _9 G1 Q' Yto do-business ( P9 ?6 _9 f; K( J

  D+ L/ p* q5 K, n/ Y& |0 o, J
' ~- {: F3 G% a+ t. u7 qrt random 360

, t$ ?- L0 R! t+ x* \3 b! x  `/ W$ D7 o  F/ \
fd 1

  F, f: O7 I' L  R8 a
4 @( u/ f: z& a5 difelse(other turtles-here != nobody)[
+ S8 C4 q5 s2 M. r. l

+ z3 e( o8 Z: s, I0 m3 vset customer one-of other turtles-here

9 N4 T( w" I3 R9 g* M# l, N5 x& ]1 s$ H
;; set [customer] of customer myself
( X$ l& ?# V( Y- t8 E0 \* R" M

! z( n* l. `# K8 w6 ]set [trade-record-one] of self item (([who] of customer) - 1)! E; Q. l3 M. S8 w/ m/ `+ l
[trade-record-all]of self
! n! u2 J& a- n. S# `1 @2 y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" M3 z( X3 X* h6 ~# c2 h0 r) G* h. \5 i
set [trade-record-one] of customer item (([who] of self) - 1)
5 r" I* J3 Q% N, R9 d& b! K4 n[trade-record-all]of customer

9 w$ b2 E( l. S4 h2 T2 Y6 w
' m+ e: O" g& t3 I4 ^! m  a2 M. eset [trade-record-one-len] of self length [trade-record-one] of self

5 ]. `* P) \8 }! }- T, s) [% ]+ _
# `- P7 {8 d- E3 wset trade-record-current( list (timer) (random money-upper-limit))
! r: e) R& v/ L- L# \
& K( W, ]8 z/ S* Z/ c) P
ask self [do-trust]
) P+ [- Y; b  s$ e. x, B;;
先求ij的信任度
( j6 I3 B$ I5 g3 `1 B+ [3 Q/ X: e: f6 g4 V2 l
if ([trust-ok] of self)/ Z3 Q: G) G& Y+ D0 @) T$ l. z6 l
;;
根据ij的信任度来决定是否与j进行交易[
8 ~0 Y! m1 W0 F$ T. `* Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 Z9 J& a5 B& W: h# Z! F/ k! {: |8 l4 w" G  Q
[
1 e/ ^& @; {! ?7 W! y% Z* y8 u$ Q! k$ G
- E4 ]/ }  D' o8 q0 [7 a
do-trade
" l, Q- k# _. r  \- s

$ E' X# p9 {2 D3 t& s% J+ {" oupdate-credibility-ijl
3 V: P2 Y; j. W/ n5 {" z( ?

8 H2 {5 K  G7 [' Q! H( N) [6 H6 lupdate-credibility-list
) _% j! U! o. y, Z& f

/ A! ^1 w8 U/ x* f) {. T, f% a6 p" p( b1 [5 D: |
update-global-reputation-list

8 |# T, R5 P3 d3 g/ J& Z, M3 {! C1 S7 m1 U: b' \( g7 x
poll-class
4 D* j0 l) X5 k# I" ]7 H! s

% B* ~0 |9 b; M' \get-color
* T* V: @- y1 o- Z- t

" L4 ]; I# r/ F+ a# y]]
; f) @! M. o( F4 D% _' z' U
- A# m/ d5 f, n  H0 O3 D6 ~;;
如果所得的信任度满足条件,则进行交易
6 [8 Z$ q' p; K
# n; d) |2 y: G( `$ Z! O" B3 L[

4 D$ a! h. c- H3 m: l" n
5 e% l& J0 X. L4 hrt random 360

1 j; r4 s; o$ Z8 |( \% R
+ S' V( u7 n; Ufd 1
* r% T! i! F% O9 o  d4 e
& \7 e/ ^$ h4 {! ^
]

9 S, f; U3 A* U7 d0 X8 J, N1 M) g: }8 i5 _* d0 y9 L' m7 S2 I: i
end

+ d3 H; w7 Y6 e5 e2 C2 K: U) A* u. |- Y: S: o* T* w
to do-trust ! D# F/ q" E/ x% s3 C1 K0 g* \* N
set trust-ok False0 L$ L6 b. k2 i. I2 W/ ^

0 R' W' q' D* E7 J0 H, W; u

' x6 o9 s3 y% H/ H5 _, A2 L, L1 z7 k: ]let max-trade-times 0
" k4 S5 [8 Q! c  X* J9 R. fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& E( K( h( N/ d5 ^2 p9 _& r
let max-trade-money 02 n0 l( n2 J1 o0 V6 u% i( m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 a7 W3 J  c& j( u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ O3 m% P3 P" S9 z' [3 ~9 o1 h/ ]% [5 h, ?

5 V) H+ {. `5 Q% X/ Tget-global-proportion5 F, M" r! B) ]
let trust-value# K. a9 c8 ]& k9 }
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)
3 g& ^( `/ h* v& ^/ c+ j
if(trust-value > trade-trust-value)8 U7 o9 n0 t$ i+ J
[set trust-ok true]! E+ m) b/ |- \
end& N  H* v% M; m' }  I7 ]6 d

0 [( E8 c6 V7 w" H- J5 mto get-global-proportion* z2 w/ C/ N9 I" p! j# A7 Q2 w0 y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 A" q. R7 c6 d5 K- B) D0 l$ A
[set global-proportion 0]
) j/ ]6 j+ ?% R" u9 G0 R[let i 01 G1 ]$ V/ G% F8 O$ G
let sum-money 0
; x- I3 q" e4 ]$ u; H/ y; o( swhile[ i < people]4 r* C0 O7 Y* _8 [0 o0 d
[) M5 S3 x9 F& M0 Z0 }
if( length (item i) ]5 k8 c" A- C5 O% [
[trade-record-all] of customer) > 3 )
0 @. }* `  t: J8 A; {1 o
[1 q4 H) T# n  W9 Q2 ~
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 b/ E  _) t: u]1 Z( t/ R/ X, ]5 S
]/ n3 I' z* s- q, b6 o/ U" o
let j 0
, F' C# q$ I0 O# `9 I: Ylet note 0" @; I, ?7 O$ r# B  _$ z
while[ j < people]
; W1 C' [, x' e' d[6 |- K+ Z7 s, [& U/ b! l
if( length (item i1 V% ^, z; F! ^4 n4 y6 D( j
[trade-record-all] of customer) > 3 )

0 u2 w" e- \8 b0 ][
- @- B+ x% f2 ~  b/ f# @ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ D1 X8 b- M2 D$ n! p: Q4 b[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ N: ]4 F. g* U9 u, w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( j8 Q1 I* H: y- H: ~
]; i6 }" p2 H% x. I; ~* S( P
]
* \! z4 ~& p8 s; q0 hset global-proportion note4 ]+ ?" q) d% Q8 F: N
]+ y" L9 H$ \" W& N% Q3 E! Y% U
end
5 @, x7 Y) O4 z1 p& p9 W
! z0 ^# F" O3 a% \7 N4 q3 @6 o( tto do-trade& h% W2 z0 O% C5 t5 \& f! v
;;
这个过程实际上是给双方作出评价的过程" D9 z' |* d5 k6 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ Q7 W' H3 S- m' R( i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 S0 w) r5 G+ |3 T6 X4 \
set trade-record-current lput(timer) trade-record-current8 m8 `* t% C4 m1 K
;;
评价时间
. l- c; ?" V& n7 H$ `: Jask myself [8 d' D9 o1 A7 K$ @( z3 p8 J
update-local-reputation
3 I3 _5 @0 w; R) p. [set trade-record-current lput([local-reputation] of myself) trade-record-current
/ c2 A4 r7 \) ?0 L* a]3 M. C2 U9 p: Z1 _/ b
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 Z* D% H2 u+ t2 _. S. l( m;;
将此次交易的记录加入到trade-record-one
; Z  j( E# a  c0 f  c+ Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 W1 b; o( A  T9 c( ~
let note (item 2 trade-record-current )
) c: ^0 [. ]* e5 P2 w* U$ Vset trade-record-current
$ a) w: [! N1 h/ g/ L: s(replace-item 2 trade-record-current (item 3 trade-record-current))
. I3 D5 L5 _# U7 t
set trade-record-current
% X! x& W- A6 S/ F  g! G6 m(replace-item 3 trade-record-current note)
" ^! j" _! o" q; v% [9 ~
; E, A* t# J8 v4 @& @9 x5 b3 L

" A- R" T% X. c1 k2 hask customer [6 v" T% g/ l6 c4 l* z9 ^7 h+ N
update-local-reputation
" `. ~4 C! w8 T5 h; t' z5 iset trade-record-current
! F" D" i! m$ d' J! B1 `# N# ]; R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, F) y. m( O! f9 |2 `]# j- |0 c6 y6 K- @; R

. e. H3 Q* h) b+ k- n

2 c9 w9 S' d. Pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% B% K0 C. U( D& |

  P! I/ _: D2 ?set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; Y* T: O/ B1 X;;
将此次交易的记录加入到customertrade-record-all
3 W$ _  F! {; v* f+ N  zend/ E9 n* ^5 P* b3 E& @. b

$ ~- p7 A  j  k$ E/ U5 Xto update-local-reputation1 k5 E1 R) R& s
set [trade-record-one-len] of myself length [trade-record-one] of myself% T8 `( t6 V) q. ]
. f$ X( F, r, H0 B

6 p4 O( X9 i9 W6 L;;if [trade-record-one-len] of myself > 3

( {3 T0 ^5 g5 supdate-neighbor-total
+ U) {! r1 V3 f# ]7 v- I;;
更新邻居节点的数目,在此进行: S* V! M: z7 G$ A; E( Y' X7 V
let i 32 F! u: a9 O& `7 g6 b- @0 l6 k
let sum-time 0
' i: w' [- d( g1 Y. Q0 N3 g: pwhile[i < [trade-record-one-len] of myself]
8 y! I1 H9 J( ]) \6 q5 m[
4 c7 P# d- c! j! F5 {2 C. v7 Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) g" e# S$ ^  \
set i
5 n& d4 q3 a& |) X' V( i + 1)
$ k2 b6 f& i4 L: S1 G( Q
], j. i* t. C: q3 v9 z7 C
let j 3. f) h/ w4 I+ u7 N
let sum-money 0
$ C5 t, v1 i2 m0 n; i' ]while[j < [trade-record-one-len] of myself]
  a$ h6 L) I2 a[, [7 N9 V$ m9 I; C" m* M0 V/ h0 o
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)
. Y/ h" c2 r% B# }1 Iset j6 c3 H0 N: N+ Q6 H+ ~
( j + 1)
, R- H! s9 ^( w, E% G
]! ^+ W8 T7 T& }4 G+ W; d1 ]
let k 3. F5 n# I1 p0 H& B1 ~4 x: I
let power 0
' h, r" s% B5 U8 ~6 q% d. Vlet local 0
) G0 f( y* c8 M. J, k$ f$ n2 Bwhile [k <[trade-record-one-len] of myself]/ ]- u# }- U# o) u6 c1 J
[
* R9 O1 s, f' d/ cset 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)
& G; c! X/ U7 X8 N: ~# Yset k (k + 1)
7 O" w" D* m5 U7 d& y) j. J]* y) b; g" u( N- w- U
set [local-reputation] of myself (local), V7 @; f4 }8 B0 ]+ U: A- n) z! t
end
0 p+ A# I/ u' f. _# i& G! Z
  P" j; P$ p  l$ U3 k3 u7 kto update-neighbor-total! }" f' k9 s! e1 H0 ~5 l7 n

8 \0 D% X$ k3 h" v3 w- K8 eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 P2 t3 c2 `( P" F4 `( D
' ^! W2 U2 B, ^2 ]& d
, {3 @8 m& H& i1 C; P6 G
end' m& k# H+ `. n" I6 g9 F

- j3 m) r# l7 b) g3 y( _to update-credibility-ijl 2 M) l. k) L+ o, b, z
2 ~, L) @" i% s& l! b* j% I
;;
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 {  {6 n6 g: M7 n' H2 n6 p
let l 0
  ?  m! W8 Y" ?6 {( I+ T- wwhile[ l < people ]
. M1 h) |7 }" c6 v- k;;
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2 \( M; {  B8 s$ o. r. M
[
9 F9 C" j% @( s4 V7 Slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) }, @5 o8 u  G; `& h, Pif (trade-record-one-j-l-len > 3)
2 o6 O+ m2 h& _- r  V$ ^: W% a[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$ N; O& D$ v* C( ~! c3 d
let i 3! s1 s+ _3 ?. V9 h
let sum-time 08 ^1 S  A& @: _! j) ~5 B- _
while[i < trade-record-one-len]9 o+ I. Z0 n& l
[
& I' }. c- ~3 S) R9 i  Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- n( ^( C2 @9 P8 s' p+ E$ r
set i
) G$ A* }2 Z1 d( k7 V1 W( i + 1)
. W, T. A7 q  ^+ F/ Z( \
]
1 d! s4 g3 U7 o. q" Clet credibility-i-j-l 0
' X% m1 S$ p3 T8 ]7 y;;i
评价(jjl的评价)- g. E3 x% q' z1 d) b. f5 \
let j 3* `- H( M% [0 U" X- |# T
let k 4
, f8 L% c: B4 j, U3 Kwhile[j < trade-record-one-len]
, {6 a4 x" U# f9 t+ s* I# ?[% d% _7 U7 ^9 T  K; g9 x
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5 Z8 e5 W. ^' ~0 y; C
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)
5 v1 M. }* G2 ~- s* [" v/ O8 i! Yset j! d8 x5 N' g' i
( j + 1)
! g0 E0 ]$ |& e- j8 `2 @/ D
]9 R8 |: s4 r0 g5 o
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( A5 j  }# z0 r; i( D# G

: r$ M7 m) A" Z/ x  T" k! R7 \
* s$ J! A* A; Y3 A; V& e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& N& N8 Y7 F) x* v6 t5 U! |;;
及时更新il的评价质量的评价
  i- H2 C/ {0 O) g7 Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& h  S" O' j* b+ x2 f
set l (l + 1). v4 Z6 \+ C  \) p
]
$ `. k7 t, H$ ^6 k$ L5 lend" u* H0 h0 Q- y% W4 @* C

9 l: C2 L) b( \# hto update-credibility-list
" ]! g, ?1 M: B# a1 k7 v, |; Ilet i 0
8 s$ y. W7 R% F) \: awhile[i < people]6 A% \  o  y5 ?, l" N/ F. a
[$ {7 ]* W5 {4 g- o! ^# I3 P: J" x
let j 06 n" W2 X+ l0 v# M7 ~1 P9 e
let note 0
8 u' |$ D" Z3 H( u% c$ a) ^2 nlet k 0
$ i# v+ ~  n( @3 p: Z& L, a7 d9 S6 q;;
计作出过评价的邻居节点的数目
0 r4 K* @; b8 c" F& D6 owhile[j < people]
6 p8 `, z5 m+ a* W8 H* x/ F# n, @! @[( w* c% B& W, x5 j
if (item j( [credibility] of turtle (i + 1)) != -1)
6 w9 j4 E9 v$ `, i) b;;
判断是否给本turtle的评价质量做出过评价的节点
$ n$ P4 R- ]- v8 ~[set note (note + item j ([credibility]of turtle (i + 1)))' z: I4 _1 x9 B3 _5 h3 u7 ]3 |3 a
;;*(exp (-(people - 2)))/(people - 2))]
% {+ n- [7 j$ H7 q, y* \1 z* A1 N
set k (k + 1)1 [+ Y% Q! ~, @8 d" i8 l% F
]
% }4 y" Z7 p. m! `5 J+ Oset j (j + 1)
2 F9 q  F/ {$ X) j]1 w$ f) K8 ^; R; k* i
set note (note *(exp (- (1 / k)))/ k)
- j' D; g9 S2 S! Kset credibility-list (replace-item i credibility-list note): C# n" `* L( L/ M2 j* M+ U
set i (i + 1)
1 }# {7 d# v& Z% M! }]5 ?7 w% f% V4 N4 s$ Q( B: E; i7 l
end
( P# \" V" d& K% [4 {! f
5 T7 N: O6 t5 U4 fto update-global-reputation-list
4 }, W# I; g5 D1 i: T& o  f7 blet j 0" x2 J  b" ?" ^* I/ R9 H5 q7 ]
while[j < people]. S% ]" N0 @. |8 t0 @$ t
[3 k1 k. f+ ~9 _3 u, Z
let new 0# j/ W/ }! {" o1 f3 _. H4 @
;;
暂存新的一个全局声誉) j5 w2 G7 ?* d
let i 0
* q  Y5 ?  u1 G7 \: b( f0 \let sum-money 0/ J: A; M& r( I* M% Y# J6 V
let credibility-money 0& ]: Y8 J8 P9 Z
while [i < people]  n0 b4 u2 ~3 }( G
[% F4 [3 w5 q! R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# K" G' ^. E1 Z# L: D. Q! L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; S3 a- Y3 t3 q  K" G4 k  Lset i (i + 1)
: v- U. X1 u" ~+ T+ |. A: ~% J" L) @]
! b2 ]' b, \6 [let k 0
9 b+ S1 r9 u( S1 G+ Jlet new1 0
% I, z8 K0 y3 X$ p2 M) C# Y* _while [k < people]
0 S, h. D3 D7 {[
# e- w3 ~( t, x( k  Rset 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)
0 r5 B+ g5 g8 ]3 u' Aset k (k + 1)
- o' g3 K5 j. Y( [9 w! g0 S! L]% K3 e( Q  z$ B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ _7 r6 b; p3 R" Kset global-reputation-list (replace-item j global-reputation-list new)
9 i" H# J) m6 B# m# z* Q2 d" @set j (j + 1). {; v- R) L: [# Z& U2 ]
]4 ?' D- v) Y, N8 L2 D3 V
end" A: @# @$ A7 h3 K* m: m( I7 v4 _

4 Z) B! G2 f, d' _$ \" t, N# _8 U; h3 x: Z
6 l# K4 P4 J$ U4 ~! M
to get-color6 q  ]" w& V* G+ U7 N

' @" _, F5 T/ f/ }5 E' [! _set color blue

6 _7 z/ n! S: k; ]; `1 oend$ V" y1 N- q3 S+ ?, @/ w

% ^4 m' V" m/ q! _$ [to poll-class0 H% U7 B; U/ ]1 }- @5 r2 e! r- ]
end9 L/ h8 u: `* s0 A1 u  t/ Q

0 b% c' v. N! B; h3 \) I" b( jto setup-plot1
8 X0 E" ~9 C6 W; b" I5 {6 F* S3 W6 b' p) f5 m3 m
set-current-plot "Trends-of-Local-reputation"
1 n2 o# K/ T$ h% F

. f/ u4 W7 k$ W& U$ hset-plot-x-range 0 xmax

. s/ U& O! c  a* x/ R$ a) v4 ^2 D/ G" Q1 a$ c
set-plot-y-range 0.0 ymax

. O$ k3 _( S( \, G+ Nend2 {; K" X8 F6 I  g! w
0 o8 E( A! `: e
to setup-plot2
. r7 K# {4 J$ X- b. ~2 }/ g/ C6 x5 {8 {# {7 g
set-current-plot "Trends-of-global-reputation"
2 h" C% I" b; ]8 F

# D0 E. h) e8 O- X. y/ f7 Mset-plot-x-range 0 xmax
1 @6 N% Z0 I& j' K# b4 ]: `
- J# x# i. f& U1 a# R. f
set-plot-y-range 0.0 ymax

7 ]/ h' G- r5 w: g& n5 \$ v. S! u4 J' uend
# P5 V  y0 y& X; v" T6 E- U1 H  k& r( Q, d2 g& c: O. S
to setup-plot3
( t( A8 |2 ~/ x  Z# c+ v  f9 j" l5 ?9 Z. c/ h
set-current-plot "Trends-of-credibility"
5 i7 q0 y# v7 l+ }8 b8 G1 d

% F7 g/ ^6 A: ^, v# `. w& C8 eset-plot-x-range 0 xmax

" G, y! T* ]- z
0 Y+ G( f# q" A, \, b0 _* j* yset-plot-y-range 0.0 ymax

( x& m4 N$ g7 Send  |  P; N3 K  K3 h
  Q, B& g' D6 k
to do-plots
+ \+ }$ F1 e# W, Y1 c9 }0 _% E( Xset-current-plot "Trends-of-Local-reputation"
# z1 E: T8 \" C- l# Z/ Y) _. nset-current-plot-pen "Honest service"
4 m# l5 z% Q2 V, a$ u3 d8 Iend6 }0 g7 J( l1 I( n) g

8 [: d3 K+ y$ g9 n8 m: @[ 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 D& s/ L% L: }8 Q9 c& I
" z( q4 c, i3 H+ f5 c4 c, H+ W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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