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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:" Q* p: l+ |6 j' m$ _3 q  Z5 g
to do-business
4 Y4 ]" Q) f8 {  d; k rt random 3603 j6 r5 m; Y  ]& y5 n, M
fd 1
, C  q" Q0 Q6 \. c( D  ~ ifelse(other turtles-here != nobody)[. I4 Q* c* f) U6 ]" E4 [
   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.
( [% c( ?* K3 C0 n2 ?: f/ f9 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + A% z( m9 Q  F$ l# x8 O0 v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( K/ D' a* t2 f: }* P, N0 J+ o   set [trade-record-one-len] of self length [trade-record-one] of self
1 q. N8 z( N. O0 J' p8 z   set trade-record-current( list (timer) (random money-upper-limit))
- C3 _% n1 {) U; a, e2 z/ m: R2 ~- a' I0 }
问题的提示如下:4 _% f9 E$ p; {9 Z, C6 `  U7 }

: Y8 a1 M  C; A5 q2 Nerror while turtle 50 running OF in procedure DO-BUSINESS8 b/ \, s- I: h  m8 A! R& v
  called by procedure GO
5 H9 t, g- J* F% S0 i. }OF expected input to be a turtle agentset or turtle but got NOBODY instead.' [5 _3 S" c( s. w
(halted running of go)4 J; R7 X1 h& ]/ f2 s& a' z% ?

/ {7 q  n* o; o% A# _. k5 W. J& u* U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~~# ^% n  D' P# U4 D& h" H1 r# H* K
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
1 v7 q/ ~( F  r0 T2 _' a8 c- O" S/ ?globals[
8 Z2 m9 p# K3 @* h6 m4 G; y1 O9 fxmax; o! y# W+ S# J* }1 f! h4 @
ymax+ h+ P* L  X0 d" A4 ^' E
global-reputation-list. ~+ u* O# M: Y/ D

3 q/ L9 n! S$ {. |" c/ Z* p" f/ u. I;;
每一个turtle的全局声誉都存在此LIST9 ?5 ^/ J1 Q9 q
credibility-list7 {. S/ _" z7 N7 G- |" {
;;
每一个turtle的评价可信度( u  v+ P2 G( }9 R
honest-service8 L5 g& {7 F6 A) T6 p
unhonest-service
1 W- |3 Q/ a, e/ Loscillation
5 i6 u. W3 ~  A: G4 Xrand-dynamic' F% n4 P% T3 q, ^/ ]4 U8 G
]) Y' r+ f% w/ E& l3 Z# }# {  C0 ?0 t" m
* y8 P! R9 x; n2 H: r
turtles-own[% \% o% J$ c* ?. ]- L
trade-record-all# \5 C8 s+ B5 Y0 l  V6 C
;;a list of lists,
trade-record-one组成  J% b+ j' [1 X9 H' i% [2 g
trade-record-one
: E( r4 e) N/ Z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! b2 x3 G! z6 n8 ?
, J' ?% u! {/ N4 [6 C3 c; h" \; y;;[
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]]
; }9 G# ~- K( ]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 J9 Y8 b* s: L/ g. _, B8 |0 ]: `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list2 E# M2 ~" N/ g: f8 m$ M
neighbor-total
5 R; w$ L% R: a, Z& ^* ^1 e;;
记录该turtle的邻居节点的数目
, z0 z- y$ J, L$ g+ \* d4 {trade-time; s  l8 s7 }6 {; M4 E
;;
当前发生交易的turtle的交易时间* x' b$ G: S5 }* p% d5 p; {
appraise-give
4 }  j7 H1 w7 c5 k: o;;
当前发生交易时给出的评价) ~9 Z* d- C1 O7 x
appraise-receive3 `  [2 @$ m! g: {
;;
当前发生交易时收到的评价
; U2 r& c4 d( w, ^6 m4 ^appraise-time
5 w& k3 R9 D: V# r1 N$ R& X;;
当前发生交易时的评价时间" k+ I1 e9 n% _7 q0 U0 x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 U: y7 T, ?6 Y) G7 Gtrade-times-total2 c, f, c! p$ {$ W. X
;;
与当前turtle的交易总次数
. `- @3 ^/ j+ t7 V8 D+ t" _trade-money-total7 z3 S1 R4 ?! @- J* A) q) Z$ g
;;
与当前turtle的交易总金额
4 f' G* n  Y: @& M3 Glocal-reputation
" z# S7 f% q7 |7 O" L6 aglobal-reputation
1 f) ?5 y1 U, S/ S$ P! c+ xcredibility# o0 ]" \' k$ D! r4 ^
;;
评价可信度,每次交易后都需要更新
" E2 h5 A* f& ycredibility-all$ o( L' |" Z) c
;;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) t2 F/ M) Z) Z# F* I. ^0 p
- |* S' ~; m% W
;;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0.58 U- D2 O; w- a" ]6 Y! H
credibility-one0 p) \# \5 v4 a5 f
;;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, }4 e1 X$ d  O9 D9 T
global-proportion
' t- @( _# n; ]& A0 Kcustomer
6 w: Q9 M- u* w( o4 L# c5 A: `customer-no' ~7 V, Q2 t  V$ b
trust-ok
: m7 z/ W$ o+ E8 e- ~; @trade-record-one-len;;trade-record-one的长度* {* ^' D. o* {- E6 N
]8 P- O" W* S# t) x$ H/ K

- J9 W5 `& o$ L' v3 h! U) u- J;;setup procedure
7 ^% \6 M# t: L, c( N& m- L  g1 V. s  r5 @2 q  W7 e* O* `& i& P! V* Z
to setup7 l' i( a9 L9 D
; b0 ~$ A, I! x) Z) ]9 P! s8 ~* [
ca

' R  K- _$ I7 H/ R, F. @, u, s5 _( f  l) Y
initialize-settings
4 X1 ]" I& U: T$ X0 B/ q, b
; K/ T8 i0 |) J$ u; J4 O
crt people [setup-turtles]

7 k9 n$ x5 V& @' t9 r) {) R) _% S7 \. h, T. S
reset-timer

/ `" n1 {: M  Z3 ?3 L* R; b+ N+ Z
poll-class

/ w5 `- b2 f2 b" N+ F: F3 [! |7 D8 q' b% m( ?
setup-plots
) ?8 E6 ^1 u/ ]: @! F

+ W) K, b) r. N/ y0 W" s5 G/ c- wdo-plots
; O4 w9 s# q: |$ Q9 L6 ?6 Z9 v
end
4 o  ]: s$ V: K/ {$ c
) o' w$ E; h) ?6 E2 _to initialize-settings0 B/ n  x+ v! V
7 s( l% `, o7 I" _
set global-reputation-list []

7 |# D7 m, B- @% ^1 b/ F% H( |% z* a
set credibility-list n-values people [0.5]
7 A* X0 K; S; }- p
/ A% Z- K1 ?) i* `9 k0 h
set honest-service 0

7 |! i$ w3 D; H5 F! t0 H
5 b0 i8 |' d+ o. ^set unhonest-service 0

( j0 y- G* \  z' C! [9 Y" {" D. x) H& M* U+ a. b
set oscillation 0

2 h( G9 ^  S* Z( O* O
: }+ v. i, r- h3 z! S- lset rand-dynamic 0

% a) }) c. e/ xend
' p0 R* h" X0 u
' h3 \) j, k; D1 Q) _" y  u' w2 wto setup-turtles 5 q# G) F  k9 s
set shape "person"
) d7 W+ t2 R* s! |setxy random-xcor random-ycor
9 Z. R: }% W; D+ H" D# Sset trade-record-one []) O. R* |% |5 s5 H/ e7 X

  H* J! {* c, k& G* N! z0 X. s# ~set trade-record-all n-values people [(list (? + 1) 0 0)]
- B. C/ N8 E) i/ M& p
& w8 _( W% X' K8 k9 N
set trade-record-current []
$ k4 g8 T3 I* N6 T6 w  ?set credibility-receive []
0 S6 C- I* z# @/ J  ?set local-reputation 0.5
6 n9 ?/ [8 y# C0 T- Dset neighbor-total 08 V! Y3 ~" x4 j# j
set trade-times-total 0
6 M* m" o& |3 K3 ]$ ^set trade-money-total 0
* F' {& t0 D; p  G& @  _; O, y9 Cset customer nobody
' U. ]+ }' }0 \8 b1 R0 Q/ U1 k+ vset credibility-all n-values people [creat-credibility]' A/ Q. Z6 B( o7 W: ]
set credibility n-values people [-1]
1 \# \2 n3 t7 ]$ \4 gget-color# a0 m4 B2 [& s/ ]4 m' L5 ]

7 K/ G7 \% P# y6 M. G# nend! t6 e# {4 k* P. T. U. r
) P; s0 D0 o* F% m- H5 w
to-report creat-credibility5 F  Z1 s- N$ I0 y
report n-values people [0.5]
! }9 C1 v( v# R4 D2 z3 `$ ^- Hend  T: g9 J- h/ O  Y" a
# p, j0 e5 X' k2 S
to setup-plots# F+ Z+ B1 B5 m# B& L
" p1 E9 m2 g) v8 F) H4 w
set xmax 30
; {+ J, c8 F/ ?1 W6 R( X( u* C

3 L% `0 T" i- X4 s- K) f- xset ymax 1.0

2 _' Y- _& Z1 _8 W( g5 s  l  v! K% I+ {
clear-all-plots
7 F$ K* y4 n- `5 a) r
* L3 @& a6 C8 P
setup-plot1
4 Q3 R' z1 U: ]! L4 x1 N

% @4 X/ J1 v! s/ `* lsetup-plot2

  G; y" f8 D& `% j% v; f- \# E  o1 B& X
setup-plot3
2 u# ?& `. R0 p6 L6 [# s
end4 b5 O. `4 p4 P3 m% s: [6 }; W

/ V# T5 w( v% F# R;;run time procedures
# j, n3 q, q- _# F" [: D/ [- u3 P9 E+ x/ H% T# P% n+ t' h
to go
- N8 z9 W+ I# E4 O3 X) w0 K. ?- b$ Q
/ u6 e' C) ~5 ]$ f* M! w) mask turtles [do-business]

( c* Y  d# v8 E$ P2 W0 gend
, a: {9 I" T2 F$ P5 }# s
) w3 c' E1 P! h; `9 fto do-business
4 T( |8 }# M2 a& F; W

/ v6 l; s* [7 T
: b# q: A: |' O( w7 m- d' jrt random 360

! F: m. w$ y1 `+ [. H- h# r
' S4 D0 U2 p) p' _fd 1
- b, f1 Z* B' e5 G9 g& h

) D9 Z/ |6 ~5 W* t" l7 A9 H* B  Y: zifelse(other turtles-here != nobody)[
! r8 w# q) A) A. E: F) a1 b6 k
5 V; B4 v9 n/ d
set customer one-of other turtles-here
" Y; X9 r. B( Z" W/ _
, L! @8 F! g  L9 k+ ^: |1 c' ]6 I
;; set [customer] of customer myself

3 z0 Q/ d& c! U6 K0 s8 z- I4 @7 t4 y0 b! I
set [trade-record-one] of self item (([who] of customer) - 1)# K* N! i+ d' {" P% e, \% |" E, e
[trade-record-all]of self
- C+ Y& z/ J6 i( M8 ~- `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( }  H/ U; p5 b* M, M4 d9 j- X; M
) V; ^: d: N( A6 l! M0 T
set [trade-record-one] of customer item (([who] of self) - 1)0 J! `* _6 g% Q- M3 \
[trade-record-all]of customer

( v1 x7 y/ W6 E0 }
! s& p- |7 W1 m4 V; Pset [trade-record-one-len] of self length [trade-record-one] of self
$ _" f# ?) O4 ^1 W

. `/ j# m, }) i3 X5 x- _set trade-record-current( list (timer) (random money-upper-limit))

, d) s+ o( C* [5 j# z: P6 P; c! q) w# ]2 L) J* P; @' T
ask self [do-trust]' ?- h; w( V- H
;;
先求ij的信任度) S8 h. z; C* Z- ?' |3 q% }, E

+ ^9 S* x: |2 }! o+ Nif ([trust-ok] of self): F! Q: G2 C4 }4 B- d
;;
根据ij的信任度来决定是否与j进行交易[
& V- E: M8 ~0 N& H) Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  ^" t6 Q8 g/ r7 n0 f1 Z3 C
# Z- z0 [! O8 ?% S6 U3 E* _( v
[
! J7 W+ R& W! B) a6 x6 F

5 p; \, s8 L; G+ R2 a5 h* jdo-trade

4 Z+ x" t3 ]+ h* x! L" b8 e9 e8 u$ c2 d. ?  w$ s
update-credibility-ijl

% q: A4 H& p! d$ |0 o7 A
% @6 F' x. z( g  {update-credibility-list
& Q# \# S( t. a! a5 C

$ C" n: I* @& ~" D, ^% t! m7 c
: A# X8 q2 V3 P7 u  H( jupdate-global-reputation-list
8 Y' W# b7 F* A/ I. w

. V" J: t$ B& O3 I- Spoll-class

, Q3 r) W- G" L+ L; w3 p% o- P. M$ Z0 I
get-color

! m( e/ n& D& G
& d/ _/ `) ~" C7 j0 m$ {]]
( e) e* r. t' s9 ^; S. |. j) N; ~9 |0 K1 z' O
;;
如果所得的信任度满足条件,则进行交易9 B. r, P0 o/ t& ~0 ^, l, h

# H& g4 \" ?; m/ ~' J[
- k+ [4 n7 H4 g3 l9 ^

2 Z, \( k/ s. K, o2 t' U; }" Nrt random 360

9 f; M% z6 P8 J$ a3 i$ h- U6 D* p( i# X
fd 1

3 H/ s7 \/ z0 w1 b7 h$ F$ Q
9 u$ t1 b0 @( W* a]

" G+ C1 c- B( x) s7 B6 N
. h. }* x0 C/ bend

4 Z/ _# b! W8 Z! ^3 \
' `9 \+ H6 M, X: Uto do-trust
0 R# `5 F8 Y+ A" q2 o% oset trust-ok False1 m  U8 k8 q) g8 I

* _9 o" U8 m/ |9 P3 Z* ~9 u$ w/ Q

! F. J  U/ z) {+ w; L3 X$ W/ v# elet max-trade-times 02 `, L/ @- i$ }4 m: f4 `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 H; Z( E4 E1 D% }let max-trade-money 0/ ~( N+ F7 I- r
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ }  m! L2 k- p  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))
" w2 R, s5 i- r+ z
" u' q& |  y8 E' I6 F/ R

+ L- D- T& N5 d' N7 G) c; H% z5 Vget-global-proportion# G7 |8 G  \# n6 v# R
let trust-value
5 c9 x& D) k0 Blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( Z0 [6 N. j; }5 q' kif(trust-value > trade-trust-value)/ t0 x9 ~. Y- X0 e" X% M4 _5 `
[set trust-ok true]
( ^+ [" |6 o  |( X; F- ?  hend5 a9 I$ b  Z8 s& Q& [: J; p
, D* |: g! h6 V
to get-global-proportion; B7 \& |$ ^! E% W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' w" ?' a4 j3 Q7 g# j[set global-proportion 0]
' N& Z4 ^+ }" `, h& C7 j[let i 0: ]1 g% S" ]' q4 F3 g8 m% b  ]
let sum-money 0. H- t* U& w0 R; \- A& r0 d
while[ i < people]
: R: ~* U1 A$ e, Y& N[5 q( ~# N$ ^( L9 e& ]0 Z  y5 S
if( length (item i9 ], @2 C, f# @% m
[trade-record-all] of customer) > 3 )

5 ^8 y, x6 t1 L. L, D* L[) b) \2 b2 \) c+ }
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) Q+ o% `3 w( e' v: L* G( g
]$ S# L7 q. W$ c! ?% s* w
]2 k, u! x0 U5 a" X9 C1 A8 R3 K
let j 0
# l# N7 Q# J: l1 Y. u* olet note 0
' a* i8 b" |' G! k5 ?8 m9 ?! u: z7 mwhile[ j < people]
$ z/ m4 H4 c9 b& b+ O" u+ ^, y[7 j3 O1 j2 {  V& d$ q2 a0 X( a
if( length (item i7 _& L5 Z' F" l" P* ~& V! ~
[trade-record-all] of customer) > 3 )

/ Y; [- r' D7 l5 P& t: u* n( Q# g[
! E! J) H6 y$ V# F1 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# W: W. j% \, [2 x+ F7 b$ C* x  Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# Q  R! m% S, Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 t3 \: w- i9 q9 j/ C  z  p! e]* Z% `0 u) [7 }3 h: u
]
) V; E1 A) o# m( X! K' dset global-proportion note
* ^. ^, ]; I; }# W. x! [* t], y" W' I" r8 ]  W4 U
end* r; _) {1 t% R% D% ^" a" {

4 s7 X2 t* }7 ~9 A( M2 tto do-trade
/ ~$ a4 k( b# B8 a+ j, P+ z;;
这个过程实际上是给双方作出评价的过程
3 p2 |. {( i1 R) T0 H3 k/ S" y+ Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 m8 `  ?& E; V" G) T) v& [, t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* d5 [0 A. T& o% N* k
set trade-record-current lput(timer) trade-record-current
; f6 [' S: S7 g4 f2 W! ^;;
评价时间
" f7 f# ^. D4 C3 K9 P6 z+ q* ?ask myself [
1 t' C9 j7 T/ I7 u: vupdate-local-reputation% r' F) i/ y, p  g5 J8 w: p
set trade-record-current lput([local-reputation] of myself) trade-record-current9 d5 e8 g  G: i3 c4 E6 G$ z( b4 S
]
6 \2 u! `! c$ k4 O) F; x5 @set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 C1 T  [& }% ]( X;;
将此次交易的记录加入到trade-record-one+ w) q9 i8 m1 f  j) y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), N; N9 Q; `4 q3 D+ M
let note (item 2 trade-record-current )+ ^6 W4 H' H8 j) B1 v
set trade-record-current5 q. a' i: n: m& q! j9 ~
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 Y1 ~/ |4 z1 }set trade-record-current
# z: r* F1 O- z8 L) O8 N3 i: |(replace-item 3 trade-record-current note)
7 A: D3 e6 N$ w; M7 E/ }- U  d! K) _) v# U

' ?# Y, V) q/ Y" l+ `6 M: fask customer [
  p  ^+ h. T& U; R/ l' h4 F  rupdate-local-reputation. C1 I+ t: j0 e6 t
set trade-record-current, e5 ~: w6 z, M0 }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  e& n% `, C; `9 M/ P" @0 \
]4 e% B7 A, U' \/ k. L+ W
9 l2 E7 r( t- l8 Z) a9 x5 ?
5 C8 }6 r- l& _7 g! ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  @5 f, w+ K8 P# V* d5 b. K9 F  @: _: P

0 J" Q% R+ P' T/ C9 ~- [" P8 y9 ?; _- W9 ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ C+ b3 r  E5 W;;
将此次交易的记录加入到customertrade-record-all
5 h& n" V7 G" }3 X- i& vend0 M7 J* T0 f* g* U: q
% D9 w$ M4 P  t9 C' G
to update-local-reputation
1 ^* u) I: D- W& E7 g& T6 s( vset [trade-record-one-len] of myself length [trade-record-one] of myself
4 w+ C+ q/ H* `# [
1 A+ T4 P* S4 ?3 j1 w+ I/ [
# _9 T1 X( {2 }3 L# C* N* d% Q;;if [trade-record-one-len] of myself > 3

5 k& D+ [& N) N/ {% wupdate-neighbor-total' A& M  f9 d; g! \% _+ f- Z2 x
;;
更新邻居节点的数目,在此进行! u) j5 V) y. A7 _* F: ?
let i 36 b) i8 X6 y! g7 L( Q, W
let sum-time 0
9 C  S6 e. P5 w- [! H) ]' ?" L8 gwhile[i < [trade-record-one-len] of myself]
7 b1 x9 Q* C% N. C. W[3 L; Z+ t: R9 o" {& N' s% {
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): a  |# v: r* X, T* @
set i0 p) q& W$ h# a7 q+ N2 g
( i + 1)

# o8 [1 \( a# I$ N: l; Q( J- j]
9 i. W0 I* Y7 B' b+ ^9 Clet j 3; G2 u' P! S* n* W) x3 Q- \
let sum-money 0% p: \, L" T) s: `$ p9 |/ m
while[j < [trade-record-one-len] of myself]
! z; k3 L  m! [0 i- c5 j[
  ?: A& ~/ N9 s7 nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
: l# ]4 |5 v$ L+ N$ l# E3 zset j
% s3 P; y; r* f4 z* R, [; p( j + 1)
$ w& n" G$ A! j) U1 \
]
6 l/ o# q4 ~; ?; p0 j6 _  glet k 3
5 ~: u" k+ _% p8 Q. p9 ~let power 0
# v2 D* ~- b) D7 q1 A& Q0 ?let local 07 t+ y! z5 r7 @. d: U
while [k <[trade-record-one-len] of myself]/ G6 q* p5 K: ~; }5 {  j  ~' Q
[$ W) J. s9 w0 |" X. G& P9 ]
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) & f1 M- n8 C( k) @/ h& U4 }
set k (k + 1)- A- T5 W: P, R9 I) H1 X, T5 c
]
5 L# o& C4 ?" ~& N% e% Eset [local-reputation] of myself (local)
. n- V0 N' X/ h2 y, gend
* Z4 N$ d- @+ U, x  D
, z8 O7 _3 o$ ]to update-neighbor-total& g  O, P% l6 J; s  L1 _6 Q

& e$ F5 g9 p& ?4 ~; y, m: Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ s% q( v4 W0 k: D# n9 L

' {& q# U! A) x% S

/ W8 j, ?, s4 o) v3 @- J  dend
! `; N5 E+ O4 W" s6 u, V0 ~8 N( E7 L* e9 o; ^2 E( m  j- X
to update-credibility-ijl
; j9 t  q; _/ x6 \) L1 P/ Z) |6 e; \1 w; }
;;
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。7 g3 d- o* C4 r: I& S
let l 0
& i5 q7 x1 ?" a7 i$ U6 a/ Uwhile[ l < people ]
; f. D$ L! h8 x. R- m7 X0 Q;;
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! M  D- S( S, p  T; Q
[3 A3 ?9 E. @/ z) }7 ], o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& W$ ]9 U6 s: v/ @1 Wif (trade-record-one-j-l-len > 3)6 n; z  }; k0 _/ D: z9 y
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
3 ?2 h4 m: s7 Q# i3 s9 z: ylet i 3, e  V9 M* _# K' Q/ R
let sum-time 0
: w$ R6 L! {- @+ V4 J9 z1 lwhile[i < trade-record-one-len]% Z2 K) [. j# C8 u
[
, a5 [4 P) @1 }, ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( D  b6 W# g9 K) m& c
set i) a7 t* s. q2 G% u9 s' K
( i + 1)
1 M3 J6 f4 z9 o' u9 m4 v5 d
]" {3 \) T% ?* h- x
let credibility-i-j-l 0- o& x- j5 V) L
;;i
评价(jjl的评价)
" }8 x  P! b+ Y9 l# q3 o+ Slet j 3
2 W- U& }5 R8 E  Dlet k 4
: ?1 C5 v) {- Q6 gwhile[j < trade-record-one-len]
' U, a2 K+ i4 [[
' u3 y2 r4 v0 Q" jwhile [((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2 d9 p4 L& b5 t7 ~# H5 F
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)
. k1 }  J9 b! I0 \4 m3 ^set j
. x- w( [8 P# `( j + 1)
3 E5 G$ S* U& d
]- ]: M7 V( Y' |& ~
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 ))
3 z6 H3 O) K/ W/ I' j) w1 l
: }+ M5 l+ o3 }7 P% I

$ ?: m3 K9 Y0 M+ Mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 R5 ?. A7 b+ v" d;;
及时更新il的评价质量的评价
. L3 I( R" _6 V* Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  l" r# V2 m/ t  {: g! ]
set l (l + 1)
7 c, J+ R2 Y0 }3 T]
. L! @: B4 Q! Lend
/ i& T3 p0 L4 G* P! T! R- n' _5 p$ j1 I# p' V  J+ e
to update-credibility-list
$ A  N* v2 i' }) Alet i 0
9 u) H" l5 c# a" Y4 i  u4 @2 Lwhile[i < people]3 `+ t7 E( ?2 L
[+ C# I2 Q  a& O& T6 D2 h. f
let j 0
( D' r9 _8 k) y# }! Q) T+ alet note 0
, d, _# M# d5 W- clet k 0
, r; i: W+ H% @8 L5 m( E6 |8 y;;
计作出过评价的邻居节点的数目
' r) ?+ t7 X6 D8 p! }: ^! owhile[j < people]
1 M; j8 V, H: T# E% h[1 c0 a" z% u5 L" B1 K0 F
if (item j( [credibility] of turtle (i + 1)) != -1)4 v# S1 ]' v6 }& S4 j
;;
判断是否给本turtle的评价质量做出过评价的节点% L5 g& O/ v% P" U
[set note (note + item j ([credibility]of turtle (i + 1))), W) I" i( n0 Y
;;*(exp (-(people - 2)))/(people - 2))]

" Z( o# h6 W8 X+ Lset k (k + 1)
, _. U/ ^7 O2 J1 T]. O& I) u. o+ E4 s. s1 a
set j (j + 1)
2 B; ^( Y5 {' z' s- {]
% f/ {3 n) c7 V( I  lset note (note *(exp (- (1 / k)))/ k)
8 n7 Z( G! @* y0 _# cset credibility-list (replace-item i credibility-list note)
2 r" m7 |# ^4 x5 H/ J4 Mset i (i + 1)
# A5 D  S0 z, S) n: |# a5 ]- S]
5 y* e2 M+ M* r: H- i. `end
  V. y$ x* }3 M6 M) u' Y/ x. i
( H9 P5 g* L+ I0 O) Y' D2 K9 o3 r, hto update-global-reputation-list- e# E0 e! d- |3 s1 }2 F( v
let j 0
- R! i& p* V) a" x6 `# Y# Twhile[j < people]
$ a2 F2 M  q8 \  F) I' @- e[
& K) s& |3 f8 y2 F+ Q8 ulet new 0
* k* a  v2 |& z9 \6 Q: ]" l;;
暂存新的一个全局声誉
8 ~6 W* g0 a$ q5 D9 `let i 0+ U3 u4 _% e: ~$ P4 _7 j: d
let sum-money 07 X3 ?, W: D9 W$ ^9 P9 H4 P5 O
let credibility-money 0
$ P# K1 t4 p- H. ?$ ]while [i < people]. C! \0 W. u( M7 }* L: D" w( S
[6 ~- T' o  U8 i5 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) ?" m) N1 i3 L+ B, `! U0 B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ m( c) f% }: U+ {" Q; Z* ~set i (i + 1)# _% e# l& L0 s% G! i2 b
]3 r9 v' o5 |% T: l  ~
let k 0. \1 s* s( }/ |' V; \- U
let new1 0  m$ B' x# }# Y3 Z) p2 E( q
while [k < people]
8 I( B* q8 c0 v/ [. ~[
5 O. J* Y& H, {0 {" Yset 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)
4 J6 _! v! i, L: tset k (k + 1), O! z! n7 j+ |" i& U
]
2 [  x( [. @' ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : @" i8 l* n/ r, K4 f: x& P
set global-reputation-list (replace-item j global-reputation-list new)0 H9 c# O+ m: k" W: w# S
set j (j + 1)8 T! b/ ~2 W/ r2 V5 Z" H/ x9 y
]' T6 J6 U3 K: K% t2 S5 U' x& T# x
end  h, a2 v0 c2 H- Y2 R0 B/ ?

( A# m+ q% s3 O  p: z$ V- @+ `! h
/ u! j- q. m* S3 ^. I& E' ]% D" I# l' Q9 z' F3 }
to get-color
! `3 D$ A0 m7 l- J* O  J( c
! W: c( i, r" [& W! L, {2 [" Cset color blue
% L: p: V. H( q" [2 ]) [$ h
end
. ^7 p8 }3 W3 ?1 B( ?( U  G3 F5 g$ I# }, o8 i  O
to poll-class) a( O. L2 V0 f7 a/ G9 J
end
: N2 ?5 _" b& |0 D+ Y
5 q# q. N% x. U& E0 ~8 u0 ?3 Mto setup-plot1. g' V3 _( m( r! B  ]$ w6 c2 ^
3 N* F4 h/ w8 ^& A' P
set-current-plot "Trends-of-Local-reputation"

3 G; \7 v) x& F* S9 {3 \! [! u  |7 U. ]$ }( i% V7 X
set-plot-x-range 0 xmax

0 l* y7 Z% J  m! Y6 ~' h$ w$ L$ L7 A) D# W! A& r
set-plot-y-range 0.0 ymax

! t3 C, A& K3 w6 i. m+ Yend
1 t# U3 p+ u) b7 ^4 r( Q9 _
6 [5 h7 \' l$ ~2 W" b4 `' tto setup-plot2! g9 W2 X( ?% q2 r

# g" ^. D# R, q$ _8 Hset-current-plot "Trends-of-global-reputation"
+ \0 K; ]" I( Z7 G4 _5 R
8 o9 Z' q5 p% G+ N! G: e3 A
set-plot-x-range 0 xmax

. @+ q. o% |, ]+ w
5 v6 N! b* }/ a; i4 Eset-plot-y-range 0.0 ymax

6 z9 U. V: X7 a$ j/ c% rend
; ~  J8 {+ {; a! f5 z
7 J8 C6 h, W0 h6 @# ]  Sto setup-plot36 ~9 ]1 Q- i: u/ U5 v  Y2 }

7 ^0 u3 [/ \& z; e: Wset-current-plot "Trends-of-credibility"

, r( T' ^# Z! |% j) K
7 r/ ^& [* l8 @; M5 vset-plot-x-range 0 xmax
9 z4 L5 H4 V# K: n+ v6 j

* W& o) i. M: U' Oset-plot-y-range 0.0 ymax

; E9 v: R6 O3 u) I# z- \3 gend/ J+ o% a5 S  x7 h" z  o' e, I

5 w3 A0 ~) W- f5 G, B5 dto do-plots
# d- f1 ~* g# i; p% H0 ?7 I4 uset-current-plot "Trends-of-Local-reputation", G3 w& D3 b( |- b+ l6 B
set-current-plot-pen "Honest service"  N- w( q# I; w# o/ J4 F
end
8 M+ m  |% N# p% `% S8 C4 h: L0 P2 a: q% w/ ^. 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., u- X% \' R" `) X6 l0 q

+ ~6 s; |. s4 J# C! J) G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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