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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:5 p8 {1 c; q8 {! q
to do-business . t- _  ^6 ^0 x0 \
rt random 360
- `; n7 t& _  \ fd 16 O5 ~) h1 j: y- |; `1 P
ifelse(other turtles-here != nobody)[* W' M; c9 F4 B. F! X: c/ T
   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.- I& r2 |" L7 B3 l  |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* z5 a. G) A% M$ _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. M: G3 H& L- Y0 U: h   set [trade-record-one-len] of self length [trade-record-one] of self
8 ^. Q" Z5 f6 l; K6 N, W   set trade-record-current( list (timer) (random money-upper-limit))
: _( B! G- x$ Q8 F8 w. }# f
3 g% e3 h: x# a# v/ O问题的提示如下:4 I4 ^2 k) ]2 m3 ~3 O5 T( y& V
" I) K! ^1 R! w" z/ l
error while turtle 50 running OF in procedure DO-BUSINESS
% F$ W( X3 b# t) F% P8 j; I4 t) C  called by procedure GO3 e" t. l. b' L+ j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; \; z9 T2 T3 i; O& l# c4 P3 K+ ~
(halted running of go)
& D- q) b+ r+ u5 P
# B! F: k, N! b# ]* |6 f5 h% L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~~
1 `6 d1 A: s& n2 ?- W+ g$ R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5 d" q; L# i4 R) V4 X' Q5 Z* q
globals[
# H, g8 W, [# ?+ l/ Rxmax
3 j: {8 M6 i: @" mymax
9 n: V# ?7 Y) k. _3 W8 X4 T2 U5 Wglobal-reputation-list, r& G; C4 T7 f% A7 m) G# E  Q

& @  F3 F2 Q. t+ K;;
每一个turtle的全局声誉都存在此LIST
5 \2 r4 m  \4 D, a2 Ucredibility-list
* F1 O" \+ F: I6 C;;
每一个turtle的评价可信度. {3 }& S8 {/ ?5 f9 Q$ C( t
honest-service
  h3 {) J- c+ e6 t" D3 [, I+ \unhonest-service0 O! K& g' e/ g5 _
oscillation2 s% g2 a& v# q* ?: x$ w/ B
rand-dynamic
6 E: d- G. t6 m  Y  ?. V; Y]4 _  x+ P; p) I7 V% Q
; }; L0 J9 w8 L6 p9 Z
turtles-own[
$ J* T( s2 I" {  gtrade-record-all( C+ B" n! f. D& G; d& ?
;;a list of lists,
trade-record-one组成' F5 {0 d' _) f5 @0 _% D
trade-record-one
  o- z8 B; L6 }1 C# y3 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# w  ^) l5 S4 {6 G9 c/ o1 w7 `4 L

+ m( {% z4 {  Z6 c;;[
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]]
0 V  O3 U7 P' E# Z- ~! Xtrade-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]
8 B+ K5 g' S$ Ncredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list' x4 n# d6 o, J* g) |+ f
neighbor-total
/ R2 k8 s' y6 W; {6 g" m;;
记录该turtle的邻居节点的数目
5 j, h+ F* {/ G' Wtrade-time
2 Y3 n- v$ r3 j% d. p" [;;
当前发生交易的turtle的交易时间( M2 |8 p0 b& K  v
appraise-give
0 d. T7 f3 W3 n! D2 T5 G;;
当前发生交易时给出的评价
0 `2 o& J+ `9 L( }# R1 {appraise-receive
# ?# @: m; t0 \' X  n;;
当前发生交易时收到的评价6 Q! B5 }& p9 E6 O0 ~7 q; A
appraise-time0 F. d7 `' u9 U/ K
;;
当前发生交易时的评价时间) B) {- N, S4 R" k4 T  r1 |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; z7 b: l( ]& g, c: v
trade-times-total) _( k4 P& ^5 ~4 Z: f
;;
与当前turtle的交易总次数
: V% ^! S4 o  h  i) b6 ^- c' btrade-money-total( j7 }3 K, c3 f! C1 J; ?: r
;;
与当前turtle的交易总金额
( Q+ b: E) s6 c2 S( xlocal-reputation
+ X  b: N* w# @, ~  e4 x9 `* bglobal-reputation. o3 P* s3 C) i+ |' r2 Y; ]; G
credibility4 E1 Q$ f2 B' w5 N2 R, N$ J
;;
评价可信度,每次交易后都需要更新
) j; Z4 A% k, B* j! i( A$ Hcredibility-all
5 `! t  h( B/ _5 c. 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
5 V6 |9 L. t' ^' _4 K& s& N, J& x; }; U
;;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0.56 Q9 x4 x8 V1 [  x8 [% a
credibility-one* F% q7 \+ s/ e" Y, N" F! M% a0 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people
0 r# s) h' K+ K6 H8 M- g- {! @9 jglobal-proportion" k7 J- d3 x' Q3 n0 B1 d
customer
! a" u- {/ j) b4 L. A& gcustomer-no9 h# V% S: }* M- p( [8 l
trust-ok
) [. ]6 N# X0 t2 L0 \( etrade-record-one-len;;trade-record-one的长度, x  Y3 ^/ u& \  @! x* T6 C2 t, w* X
]
- {5 s4 m1 ~" J5 o3 `; V/ f* O% h  h8 Y) V
;;setup procedure, }3 n, b# E6 l% T3 r" ~% s& P5 `: }
/ l6 c& E* e0 O* X* ~2 E5 M2 K3 X
to setup' `1 P1 J) \. ^: O

2 N! X; U  _4 o! aca

2 y" ~1 ?, h8 n7 |' l0 M( ~4 v% b. ^8 N- @* @; O3 V9 G
initialize-settings
) u- G6 Q5 _7 K
6 T& q( e' t$ p% @: v% \; S
crt people [setup-turtles]

; h- _' ?8 H% e: B  t
) M' {9 C, \! Freset-timer
7 I* g" L$ U! y. r

4 b3 w$ t& B* w+ E/ i" k  Q3 jpoll-class
5 _5 K. L9 x( R1 ^( n' g3 E# m
, l) L3 D& I" s1 p0 o0 U, r4 E
setup-plots

7 k$ {, K' y! j% Q! @
, o( G; l0 x0 w+ X/ I& G# rdo-plots
+ ~. ]) L  }" o
end" Z( Q5 k4 b8 ?! a
: Z+ l' l9 S* s5 H! Z
to initialize-settings; C( i5 w- f- P" v
9 O3 X- x) K. j: r/ h
set global-reputation-list []

* U9 B0 P8 q- T$ H6 S) {$ e
- k  U( K9 ^7 E1 iset credibility-list n-values people [0.5]

: ]' j3 k: F" {8 F; N
. \6 }- x) V5 Pset honest-service 0

- L0 o( N4 h- {0 t" R
2 G$ U2 C8 }) g( a7 wset unhonest-service 0

# I. q" `* a8 q; x: ~6 |, k1 [
6 i* e/ E. D" V# r, |( Q6 ^% M5 bset oscillation 0
. z$ }- W# e  N0 V, B+ Y
, k! L$ s8 ?3 Z2 x7 Z7 m
set rand-dynamic 0

$ M9 S* I9 N: G, |8 Dend
" A; N1 v: T8 B! B% B
" C' C$ f/ l4 }( p' m, A4 b+ bto setup-turtles + P; Y0 Y" N* Q: f  h( ~2 G
set shape "person"* H# y/ G- n- W; @
setxy random-xcor random-ycor
7 S0 V" x/ h; O) t0 p- K; pset trade-record-one []( ~7 ]" c; k3 m5 e% N- B
& O' H/ q2 B1 M5 Q. U; G6 t
set trade-record-all n-values people [(list (? + 1) 0 0)] " W$ R0 j% J* u2 p, U8 E& M( K) b

, ~% l- G4 @5 z( n1 E  Kset trade-record-current []6 g7 h5 ?8 K% N7 @1 H
set credibility-receive []: K- p: Y: j0 ^  f1 j' m  r+ }
set local-reputation 0.59 @( F" n+ ?5 E* E
set neighbor-total 0
, G: G& I" M4 bset trade-times-total 0
: R, I) h) Z& \' T1 b/ q2 Aset trade-money-total 0
# H7 n1 X) ^! R% U1 |set customer nobody9 b# k+ i: X8 k
set credibility-all n-values people [creat-credibility]2 X; F' Z6 U* z& k, h- \5 O& Q* ?
set credibility n-values people [-1]
' t7 f6 Q* z6 ?8 |- X3 Fget-color
3 f+ K% ^( ~$ X: n/ \

% m+ F5 ?( t, Q! Aend8 C8 q+ m6 a% }, d
' Z! [7 @! _% n6 z+ s! Q# N
to-report creat-credibility
1 Y, ]. N4 e$ n% c2 y0 C' Zreport n-values people [0.5]
& B/ ~6 Q1 T- r7 `/ a" l$ gend' o' Y( o, b9 W/ c
6 y; z" |/ F$ E* d( Q, I
to setup-plots
/ ~7 w  O( D7 ~# \8 \- I+ |
( A# U: |% X+ B4 R; M. C6 T7 d& \set xmax 30

4 q2 Y$ T6 x& p4 Q$ I" g( K$ T8 @9 a+ X; d- V, c7 ?
set ymax 1.0
4 E# {+ Q0 m+ F  \5 b( A6 n
9 {$ A/ Q! X/ N
clear-all-plots

5 E# l# O+ @! z2 E& N' t# Y( n, {' A& y
setup-plot1
% P. [3 i' N* k7 B; @8 n
7 f. m( [! W( {3 y7 P- p! z* m1 e
setup-plot2
& e8 O& m1 Q' q, v* b& k

0 v! B2 e& F2 w: D. isetup-plot3

. o  Y: S, K1 H$ Nend, i& q5 E; d' S. @, z1 L

& e2 X% @0 ?9 `7 j; K1 W; l1 |;;run time procedures3 h) F' F$ U* q. G% }: |+ K% @1 P

" [( p' z1 j' S" D. wto go! A5 ?7 L% e: o( h% z
0 h: K5 t1 {5 t7 T
ask turtles [do-business]

, e, m( E, v1 S6 u- m3 O8 w. ^' ]5 x$ Yend
' f! W& |+ a' ~8 g, a' P" Z1 x5 k. e, S5 v; i
to do-business
' ~# O7 r# S9 _* w" Z1 ^; H9 B: F
  p2 g5 H& u) j+ e2 v1 @

* l' _, i+ C4 h  t: ert random 360

6 u3 Y. b1 [6 U, N& u' }, A$ ^1 z3 X8 e
fd 1
0 q. X( F. U. d* [- i

. r. L6 K$ i/ K4 Cifelse(other turtles-here != nobody)[

. P! O7 Z' T: U4 O) c& c7 d3 h1 Q* b. \) Q$ z
set customer one-of other turtles-here
4 m5 I6 x9 Z4 g1 h
, ^- c9 ^* h) w- ^% B( p
;; set [customer] of customer myself

) b0 d0 y5 N% a% o$ {% a. Y1 c' M4 Q# \/ ~
set [trade-record-one] of self item (([who] of customer) - 1), }  [1 e0 Y$ x: |2 H5 s3 t
[trade-record-all]of self) u" N4 p! _' y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ N0 K& g4 d' M  g# J5 d2 Q) ^
4 G) _+ ~; D+ z/ t1 M
set [trade-record-one] of customer item (([who] of self) - 1)& Q4 T( F# w( h
[trade-record-all]of customer
" x3 u1 S" B. [) E& k( `' [
; L: I/ H: [2 T
set [trade-record-one-len] of self length [trade-record-one] of self
: Z, E+ B3 }3 V# e
1 Z% E" H5 }; F! r! f2 @
set trade-record-current( list (timer) (random money-upper-limit))
7 p6 E, ~( l3 A2 l4 g, S  j

$ i% s; V) \" dask self [do-trust]
' V! P) n: u( j+ p+ G;;
先求ij的信任度- k/ T. ~' U+ P
" ?: D5 e6 p( X7 w
if ([trust-ok] of self)
1 m2 ~. V5 ~/ v  z6 r" b, q! {;;
根据ij的信任度来决定是否与j进行交易[
- ~4 c$ `0 I* g$ vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 s: R, m% r* s9 V

/ s/ ]/ o9 {7 H- n% |[
% m9 L0 j4 N2 w9 N3 H, D% Y
; b/ m; E( J6 s: O6 `
do-trade

# e3 Z) d: N9 {6 r1 U3 L$ G7 E
8 j: U0 a! I2 Z, E8 l2 eupdate-credibility-ijl
- P+ F4 y, @# |" B

' X' o6 u) x, _% J) G. [update-credibility-list' ]) ?  f. `/ o
3 m  T8 f& q% w% W
" }/ Z0 `) i3 ^$ ^7 `  |' V, m
update-global-reputation-list

- k, a  }0 b* u" o5 ?% t) X- _2 P  Z2 Q; R
poll-class
; q$ v! e; B  F. Y6 d

* R2 w/ h+ {8 o4 d' S( k* oget-color
  o( O+ P7 {$ Y( G5 K+ d( e$ R
; Y- [4 I/ ?8 D: c
]]
5 v# b2 m4 q( d# N. W6 e) H
( w9 D' c% y$ i+ k;;
如果所得的信任度满足条件,则进行交易, C; g- w+ H' d4 b4 Q' X( T: d

/ R6 |& e) I( d- m[

4 A" d- F: b! y# a% o! V9 z* w# o
rt random 360
. C6 n2 Z0 G  i5 ?. |
1 O" p6 [" y+ \5 d+ s4 b  n
fd 1

- u, t/ ~/ o, Q' k+ {* P  `$ q
( r& f( B3 w4 y2 }]

. u4 F* w- E0 o* f0 C( g8 d. i( q3 g" T8 ~' f- q: J" g
end
/ z. ~- {# d+ g. Z" }

0 p7 P" D: c1 z! U7 u% D5 |to do-trust 6 Y) g' `0 D9 R/ P2 H
set trust-ok False
* k3 F1 P; t4 d. l
* W* f7 ?4 H# K- U% \# q

. z" R7 D$ S& h+ rlet max-trade-times 0$ M$ v2 C1 A; T- }, I1 B8 n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 k" v4 w/ ~- d, U5 h* K0 D
let max-trade-money 0
( a" `; a3 H: x1 X, x7 v' eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; B5 b+ U$ r( O- h: ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% j3 U$ m  X; P. o; {" h2 F# e( b' @4 |) U& H
& Q7 }: W5 G+ X; N* |) D

# q3 W( d3 W* B% w; f8 q. N8 }2 f; qget-global-proportion
: |6 b6 R! y; {0 w" B) clet trust-value
7 x, T7 N; |' V6 e; `* Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! o4 b7 d2 t6 \5 t1 Z( i% {* }
if(trust-value > trade-trust-value)
5 ]  q8 Y( B$ c) A$ q4 ]* L[set trust-ok true]
7 A) F/ J: A- tend
# x+ ?( z; X( f2 b
8 z& H$ q  o; nto get-global-proportion4 J/ T' Z: u/ B/ c1 w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  E& ~' K+ O" r' Q4 r' e- W[set global-proportion 0]
* r$ P  o9 |: z# b[let i 0! n0 }  K% U& T" |
let sum-money 0
9 v5 {' o0 h- wwhile[ i < people]' G! `/ v3 g, j+ V# u; ?
[
, z  t2 s7 c; y) }& a: kif( length (item i
) t- X$ Z' M) ]1 T1 g5 M5 x. X[trade-record-all] of customer) > 3 )
2 R/ U1 w+ e! U7 e4 c; f4 x5 {
[4 e& s' B; y, d; ?7 F) b7 g9 q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ e+ |% K0 |: {9 L% Z]
" P8 K; R% y/ ?4 g( ~( U% B]
8 |+ a! y& S* J, u9 b" Xlet j 0$ N+ k5 N1 r. w4 [, i. t- f8 r/ J
let note 0" \! R* a* S& ~9 a+ |
while[ j < people]4 ?/ r2 a/ ]' Y+ R! j; u- ~
[
; A& k) n0 d8 O; Rif( length (item i
' |' r: i8 u& L/ j4 @[trade-record-all] of customer) > 3 )
! h, ^2 \; m+ P# o6 r' T
[6 X$ j1 T1 y$ B0 A" W) ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. y. ~/ I* H) b3 x/ J3 a, M% ?* P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# Q7 ^- t% F6 K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 n% ^- ?  d/ l" b
]
; n3 [" v# S( Z: ^# b) []5 A) U" _) N" }0 e! \. i' J
set global-proportion note
. d- S$ {) }# T' O( }8 j6 x4 @* f]3 [* t) G; s4 j2 C4 I6 x5 p
end& U/ Q0 u6 n/ h* u0 o. v0 c# g
2 W1 z! f4 }1 K' N& ?' r( M9 z
to do-trade
1 l) o# t1 O  X1 G! G  ~;;
这个过程实际上是给双方作出评价的过程2 `  N0 P( T. e0 X' Q% {  W5 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 p+ Q! a# v. [  C7 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, O; Y) c( I+ Z) v6 C# Dset trade-record-current lput(timer) trade-record-current
) m  o3 n/ C: R6 H& `$ Y;;
评价时间
$ F; n6 C  M; S4 eask myself [
4 L* M. B5 c7 k( Q" J5 r2 [update-local-reputation5 k; N8 O  ?% c# X2 f, B
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ Z1 [8 ^4 d  L3 F. E( d- i0 Z0 k- C]! C. N0 x) }9 E( }2 Q  D7 S/ T9 I( I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 J% K  H$ b: I6 g0 `4 P4 E& i4 `
;;
将此次交易的记录加入到trade-record-one2 |* K- z) n3 E) U/ }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 k! d7 Y7 E, |# g' ]9 w
let note (item 2 trade-record-current )
: z, z7 I- A9 T- C3 Tset trade-record-current
4 ^7 K' k  o) k4 _. L3 M(replace-item 2 trade-record-current (item 3 trade-record-current))
$ C- T7 `; D7 E
set trade-record-current
  l& M" x' d5 f(replace-item 3 trade-record-current note)  T! _7 ~4 P& c- u# u3 ?& \2 B( x
# H6 ~+ W: ]2 |: m
/ n; k! Q! X% `7 u$ b
ask customer [) I5 L- H% j, S; z
update-local-reputation) h# j1 S5 r" p, J: l
set trade-record-current% [" F' N6 N4 A9 |; i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ P2 u4 m, c  Y" _
]
, P# Z: ?- K$ @: O2 D# U
. y3 a1 Z+ C7 {' p: K$ T0 ?) a% ]
* l: t, _+ t) f0 `) c. B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ f5 f& {0 w; e& X5 X4 i, F

2 K0 p0 [/ P; k$ O; \set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 L& U6 Y4 h& w/ y$ ~, f7 e+ ~;;
将此次交易的记录加入到customertrade-record-all1 b: X* `- g3 c! x
end
- P' s- W; f& @$ d8 e8 O! Z" R1 ^4 Q. n
to update-local-reputation! [$ h. S5 P! q- J4 }. }9 T* K
set [trade-record-one-len] of myself length [trade-record-one] of myself+ _* S( {9 T5 W/ _
6 R/ S: b( \  E
9 J4 u3 @$ }. M4 v! p
;;if [trade-record-one-len] of myself > 3

5 V5 v+ Z  T! a* pupdate-neighbor-total3 A: j" N  @" y
;;
更新邻居节点的数目,在此进行5 W+ m  v1 }7 }
let i 3
# K; h2 K; S# `* x1 r6 Olet sum-time 0
! w$ M2 U9 R/ G; T6 Owhile[i < [trade-record-one-len] of myself]
: {$ ]+ d' Z0 \  b7 |- X  S2 [# k3 r! Q[
  |* v4 w0 ^, m6 z$ Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, `5 F+ u4 U8 H, \; hset i" U. B: ?# v& m+ T! B, i
( i + 1)

: g' f) A; L; K" j- {6 Q/ U) i9 p]7 T; W* s0 ]8 l9 D
let j 3
. r, k! w. N( l0 K' mlet sum-money 02 @6 ]& q' y" u0 ?: e; u1 y
while[j < [trade-record-one-len] of myself]( x( x0 @" @: q' c. S9 `4 V
[0 @( T: o) e6 }6 `2 l2 R
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)
1 I& k. k# X6 A% h8 F: P# w/ r/ fset j
* P3 V! [. H3 ~# M; X( H( j + 1)

4 c0 H8 G" o4 N2 u1 `1 a1 c; U]
9 n$ p, p: i6 K) X. v/ t( slet k 3
6 h" U( |' m8 m/ V& f6 H- u) m8 nlet power 0
7 ^( x) Q& Y" a* mlet local 0
0 |/ L. a& q" x' awhile [k <[trade-record-one-len] of myself]
2 ^0 w( S  S4 j" N* v[$ n# ]7 ^: S9 M/ I3 R. ~9 o) D
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)
$ }+ b3 `) H/ ]& ~/ @9 _0 |) z& {set k (k + 1)
2 K  h9 r8 L4 u6 D. o]
) U' K; [8 z  Z6 Y% s" Yset [local-reputation] of myself (local)
( i0 I2 ^+ b5 P. l$ y5 tend- ], c1 l6 Z4 H+ }! p5 ?/ e4 V$ W

$ x3 w* m) U# qto update-neighbor-total
: u3 j! _- g. [6 B: B) B/ |+ Z, O' ~, [& r4 `& L1 }/ Y1 i# D/ O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! R) V9 ~3 y4 b3 o; O& H& Y8 J
8 I) W0 Q: ~3 g

, E1 O9 M# ^4 r* \) C# m- bend& e/ O( K" L4 \7 X

: {, S8 F, n9 bto update-credibility-ijl * T. P( G- [( \# `
9 ~, T: l$ s+ M2 A
;;
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。
+ j% e. c3 P9 [+ zlet l 05 ^9 e1 `7 z, T- C) j
while[ l < people ]+ l, N" A- _8 i( e3 Q0 d7 v
;;
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) L; B1 C& e$ g+ P$ P0 s4 J) Y
[4 \7 O, U1 `+ }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  `: m4 ?, |2 i$ {  l8 {7 X  d
if (trade-record-one-j-l-len > 3)" g% Z$ H& _/ H' ~  Z; U* s' 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
  j5 ?: K6 E" E. X# ]" X1 plet i 3: j: L+ _! S" |2 f
let sum-time 0* b2 \; ]& n, ]1 R% ]; A  q  {
while[i < trade-record-one-len]* o" J* n6 ]" _6 A4 _$ e8 B
[
/ E/ d* Q8 X* p0 Aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) n. D6 j' z3 G* }: I; P  Nset i
( ]2 ~& `0 Q) R! m6 {% z9 \( i + 1)

3 ]2 H5 o9 ?5 g  P( R" ?* a6 |]
/ p& |- P! ?, u1 M; llet credibility-i-j-l 0  W# r/ Z8 _1 {9 Z8 h4 F* J
;;i
评价(jjl的评价)
! J( H( E% s0 B' e6 Xlet j 3
( G! t7 t5 J* ]7 X1 \let k 4
& M7 f  j8 G2 Y- t" c' awhile[j < trade-record-one-len]
& Y& A, Y  Y5 |6 Q+ H% n& y0 F[3 A# f  C4 ]- d" c$ j
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
  Z0 Q7 I. T) X6 H2 Zset 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)
- S+ K! i" z' T% bset j' N8 d+ }( ]! B
( j + 1)

+ V' M. r( b) L2 t( E, h]
! \$ \5 v- q* q2 Bset [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 ))! Y' C* @) ]4 X" ~  G
# h1 i8 b1 W4 n3 f

9 S" ^; H9 j  {1 J" B! F- s/ @4 Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ v9 Z& Z- F2 `1 a- Q' ?
;;
及时更新il的评价质量的评价
6 @& j" ]1 W$ |  J- fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ Y% I5 w& W. b
set l (l + 1)1 d' X) v. H9 A! o2 r
]
8 K* [* P0 w! r) z) [end
6 B, p- V! ~9 |7 T( C2 V$ K
* R' f! ]/ ^3 g" {* Fto update-credibility-list
; G# C1 P1 m# o7 X; k" r& x& rlet i 0" @0 k  }6 }* H' I: J6 p! {# `- v
while[i < people]0 g- D$ l- b1 @& M% [6 z
[) N5 a) C5 N& x5 R% f+ S
let j 00 ?9 _# b4 O" |- y" U6 q) ?
let note 0
7 n% P5 `4 f1 n( Xlet k 0& h1 F8 Z6 p. g9 S. S) y& B) [7 _
;;
计作出过评价的邻居节点的数目1 ]: `- P+ W! K+ A( m- Q
while[j < people]6 `# B7 q* k) }6 E
[
/ Z$ U& B& q+ {2 A, }- _) Lif (item j( [credibility] of turtle (i + 1)) != -1)( B) V3 {. a2 K6 q8 W. m+ B
;;
判断是否给本turtle的评价质量做出过评价的节点) I/ L! w8 `7 A3 d- P
[set note (note + item j ([credibility]of turtle (i + 1)))
# Y$ \3 R1 v! I! q;;*(exp (-(people - 2)))/(people - 2))]
8 v" o7 H, n0 z. O: r$ q/ u; h
set k (k + 1)" ?' p1 r9 s4 y: q
]
4 x- |4 v. o' b* X! J3 wset j (j + 1)
2 i1 G- l+ L9 H4 A6 f: m]% @  v% G3 d+ i3 y. M9 ^. y
set note (note *(exp (- (1 / k)))/ k)
7 k8 o: k. W5 Sset credibility-list (replace-item i credibility-list note)5 P9 r+ w, f; v* v0 x# j2 T
set i (i + 1)
5 n" U' }! s7 f0 M5 H]
- U( g( w" c2 u/ d0 ^3 _: |end* j. N6 C1 v" B: m3 y) y7 Q  b
  S# h  a3 v# D  O3 I% v  ]
to update-global-reputation-list
4 I: |. R/ J1 _- x0 O- @4 [) Wlet j 0' ^$ s: o, s5 v) j1 @0 K7 r  q, D1 G/ n
while[j < people]
6 @1 |' w" L, J2 z! l[
4 W7 @4 h" }5 A2 Y/ o7 [2 Xlet new 02 {, J0 d; i* C; `& x) l: S
;;
暂存新的一个全局声誉
& N' i  z4 T" n1 v/ q, J5 K# L% rlet i 0
4 d  u; b: O+ g- Z1 flet sum-money 0
+ E9 ~/ t' u* Flet credibility-money 0( W) l# o0 M+ X, d  K: m; t
while [i < people]
; y- v; B. G+ _* t) S[
6 P- D' b( K8 A) _1 i6 tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% f' k, k) a/ K) a, A9 [- j/ Z# Dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 q& n2 A6 R2 n+ K8 ^; y4 u
set i (i + 1)
) |+ j. C3 w9 f6 y- f2 C]* `- [' S$ Q8 ?, x
let k 0
5 d7 w2 T, U; L# x3 klet new1 0. _2 {  G2 u, @4 X& L. I( m8 J
while [k < people]
. G( X8 D; f6 Q- ~& c% Z[
/ h% q  b" j5 Lset 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)
3 X8 o* m& h/ M7 Z  rset k (k + 1)2 X5 e* D8 W7 _" L
]
& ^9 f6 }7 o' K0 Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, {( Z1 e8 j( `6 s8 h! _# L7 }set global-reputation-list (replace-item j global-reputation-list new)& ~6 j0 H6 z: W% _* A; a' }
set j (j + 1)
3 K8 c: W* I' k+ M* i) o4 U* k- O. e]
/ f1 h; o- a( j6 hend
' C! I; Q9 D, j% A+ W% d( C: S* f6 _9 Y4 O2 p' X7 ?  Z( g( ?
5 }" e- V6 N  K  v
2 `! W* _! N. s1 N: a4 `" F+ _
to get-color' ^9 V# y% i0 N5 Z. q( S( k2 |2 D

2 g$ c* w/ B) d4 t! K. |. t* B/ tset color blue
4 @3 n, G& I$ P
end
8 D& s8 s) b7 K! ?3 _7 ?
4 z. f  p2 A% a; H; J  [to poll-class& K' q- g4 l' S& I9 g* j- x8 p6 w
end
3 c0 C  ]% r1 E8 K6 l' @- t6 s) Y- A2 O* q3 P2 Y
to setup-plot1% P* E1 j. e. y/ p* m% L0 x% `2 Q
, b) z# ^# Q1 }4 J# Z- K. k
set-current-plot "Trends-of-Local-reputation"
. M" d6 }- ]+ _- r1 a% ^- Q
2 h7 K& W6 q3 Z  Q0 d# `2 d$ p
set-plot-x-range 0 xmax
: C: ^$ N( ?1 m9 Q( Y. H
! o+ M1 \- d- z# B: n' E" D. X  i
set-plot-y-range 0.0 ymax

+ N8 \+ Q/ t8 r( U, aend
: Z5 g8 V1 P$ j) e5 v5 n2 C
4 C2 z$ t8 B! ~, t) lto setup-plot2
; x+ \  m) u' ?; B7 |1 m- [
( d- t4 W3 D. K7 x1 t- w. A7 lset-current-plot "Trends-of-global-reputation"

% o- k' H" h4 C) |
4 I# {* V7 D, Jset-plot-x-range 0 xmax

/ x. I6 D" X# T* \; n
$ D6 I5 |% }3 B* Vset-plot-y-range 0.0 ymax

# f' T% C6 D" r) N# e1 Fend
, l! f$ X* Q& x6 b+ j% I
: j+ [2 F% M% c6 Z& Z( ]* m$ h$ f# Cto setup-plot3
8 R) g8 S' R5 h7 @1 F8 H4 y: v2 B. F
set-current-plot "Trends-of-credibility"
( m. w9 N4 }/ k( A. i
4 i9 l0 y& U* K" ]( U& Y1 d
set-plot-x-range 0 xmax
) N2 x9 h# U* r

) O6 ?' k7 j' X2 I% x$ v  p; ]set-plot-y-range 0.0 ymax

9 n% X7 r. t4 Aend" R' k+ Q0 G  ^1 B0 f

2 w% Z: b6 C3 G3 {+ `$ J- }, Tto do-plots7 e, t3 c! ^4 M5 K" t0 P" f& e' Q  g
set-current-plot "Trends-of-Local-reputation"
5 t, B' L- _. oset-current-plot-pen "Honest service"4 x, x- C6 x- S" g6 c3 s
end
# s. k. e$ L# K1 q
% A$ r/ B# j" T* J/ I/ t, 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.
" X# f( t8 X, m/ a# k1 X+ N
* i# J/ u8 z5 t, N* Z. z9 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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