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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 O. i; z+ w3 z
to do-business
# [0 `' \4 a' N& |: j9 h* C0 [. f rt random 3604 K4 }& ?( k8 b7 E- p, K" V3 o5 J/ |
fd 11 M; m8 h3 |; [8 L1 ~  A
ifelse(other turtles-here != nobody)[1 ], J8 p& r9 H! Z* n# H4 E
   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.
. x3 x2 w3 I6 E: d( {   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 {6 Y/ V3 x( p1 r" F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) A" O0 D  d( |3 w" j, s
   set [trade-record-one-len] of self length [trade-record-one] of self3 n0 |) p( T0 U7 T' W
   set trade-record-current( list (timer) (random money-upper-limit))
  z/ }* j9 h) k7 z! f% g1 k" j8 S( U8 ~
问题的提示如下:' S- }! c4 N  M3 S& r% H
4 `1 J  l8 [& ~* g8 G2 r
error while turtle 50 running OF in procedure DO-BUSINESS' W4 n+ i0 V6 j5 r5 p7 R( X
  called by procedure GO4 V4 P7 d1 m3 i; H3 |* t* ~$ I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, v5 q2 F; ]5 j" t; T% g% b
(halted running of go)* E% {* \7 V+ x  |5 Z4 v) Y
% t2 G1 B! A7 }+ o2 n8 D
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~~
( F1 a0 a$ n1 D: O9 `$ C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
/ U9 }3 j! U5 `6 A, sglobals[
9 _4 k$ S% E) ]7 k/ K% f; \2 R  Txmax
' K7 r. E4 G& _9 tymax
0 A* E" r3 w) O$ _0 t+ kglobal-reputation-list
% f5 J- l  |) Z+ Y9 _5 f0 ?- l1 Y
4 E1 [& ]* |0 b+ {8 |;;
每一个turtle的全局声誉都存在此LIST
6 a& L8 H7 c. _: Fcredibility-list
) ]# `0 |7 r8 ^;;
每一个turtle的评价可信度$ ]2 L( `" a$ t
honest-service
# c9 f' U. M! C; ~+ ^unhonest-service
5 V9 J! B$ v/ Aoscillation# `, i+ [2 A& S/ ^% V4 \4 A& C
rand-dynamic2 A9 g$ I% _$ S, Z+ Y9 k' m* _
]
) n* {5 \8 Q2 C( k# P! z/ D" R+ N6 y9 [. o) v! B
turtles-own[
* a: A9 @! _2 I9 Mtrade-record-all: i8 y* `. Q0 d4 @+ [
;;a list of lists,
trade-record-one组成
+ X( o% p2 j4 V. }0 Ytrade-record-one0 ^- ^' Z. V2 r# h8 J- x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 v  O' U( E/ O! y/ B9 R, Z9 `

. g1 A+ @0 D) f3 P2 h1 R. w2 c9 [6 W;;[
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]]$ w% m( q0 n, w1 E0 Y
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]% H* Q+ c: A+ g/ \& c+ V4 a5 ^
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
% l/ s5 \% E8 H$ kneighbor-total9 _+ o) t: e2 E7 {, I; m0 I
;;
记录该turtle的邻居节点的数目/ C( I% O& q7 M+ @$ Q/ F, P- l4 v; p
trade-time
1 S% v$ h" B" H4 v2 U;;
当前发生交易的turtle的交易时间
8 i3 Q% t! w# \  W$ rappraise-give
, I/ m; h% I% W# `; N# F;;
当前发生交易时给出的评价
8 X7 M& Z4 W/ l5 Gappraise-receive, ^/ E' [# S: P* u3 D# N) K
;;
当前发生交易时收到的评价% Z4 m/ S: |2 N$ `$ z
appraise-time
& N5 d$ L5 w9 K5 X& S2 d5 A3 K;;
当前发生交易时的评价时间0 x- H. P* A  B% C+ O, o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 j, o/ r- s' k) i- f- E' n- w+ Btrade-times-total
5 g( \* p& X7 k( A;;
与当前turtle的交易总次数/ l1 J# I% q! [: ~+ b8 [' J% N2 l
trade-money-total/ J& j! Q2 x# @, `: Y8 _: N9 p( ?
;;
与当前turtle的交易总金额) M+ O) ]0 C+ B8 p) [
local-reputation
2 V4 q  A& L! z8 E) \9 U' v2 ~; [global-reputation
! v! m% c( b4 @2 S! R) Ucredibility
; e; y0 M, n' q5 B$ i;;
评价可信度,每次交易后都需要更新
9 k! k. P5 V4 E" G7 e% i  N" @7 lcredibility-all' O6 ^. f0 ^& I* }
;;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
: g0 p; Z2 B1 ]* y) e
/ v( Z9 P6 ~! p9 B. d;;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
, l0 g- \* }( E( q( |credibility-one
, ?# r9 i/ C5 s; k9 C! i; r;;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 L0 Z% T( [: s
global-proportion* Z. E6 a' y6 y4 |
customer9 O1 `# V+ j8 h- k6 P
customer-no4 `8 d& T: j& K& {) E  \) h
trust-ok
2 N/ t. P# x1 J4 Strade-record-one-len;;trade-record-one的长度8 v6 `5 E% o$ ~  X3 f: c; U/ |- p
]- a" @& ?( q/ x; b# f7 h6 x. l
# ?. ], ?: z' t
;;setup procedure
$ M8 r, n4 [; C; V
% d  @; |: k8 cto setup) S" }0 f* ?, |8 L

& F4 h- u2 n# g& L: ^9 W  xca
# {% o) b- o( {1 `
1 l* S, a8 v6 R8 Z# l1 [4 `. a
initialize-settings

0 b+ O1 A3 a/ o2 W0 I0 w; x; c3 S3 f: l3 R0 z4 v
crt people [setup-turtles]

, K. j7 [0 `0 S' F9 Q$ [* R* b* K( y2 m8 v( u2 Q! P
reset-timer

: l7 W8 e& U0 b5 i4 C' {  c! Q0 {; w! u& n5 R; _  t/ ]
poll-class

6 t) d% X) V/ b$ X% a6 R9 O5 S: e" S0 w) \, S3 I0 N) C
setup-plots
; I; }: l5 A) q/ a" K

: |3 L% G7 E* w. k  I- ]& _do-plots

. h: ]" P" J/ T6 Cend' K; B% ?, U% A3 M( J  r7 ]
8 {! G0 ~8 N: n2 @4 j+ C6 w
to initialize-settings# V' [9 [% O3 D1 C
$ N* c$ n( P9 N0 L5 E# y6 f/ q% H4 G
set global-reputation-list []
8 L) h# k, q/ Y" s/ ]" ?
9 \1 C/ s' Q4 e" {
set credibility-list n-values people [0.5]

, T& F+ L) R* C+ |( D4 w. D& ]8 R7 O. t
set honest-service 0

& N' L/ q- U4 L1 g
/ e2 Q1 K* S* yset unhonest-service 0

$ G, S  b. ~6 n( O  z% j& {8 ~$ w. Q3 r* r
set oscillation 0
$ _! i: \$ f4 _1 X" Z
: w$ `. j) t9 }% y2 W$ `( j
set rand-dynamic 0

4 W" O) q. `" T* F  N2 hend
2 w3 h, P+ _. @% L$ Y) X: o0 o8 i, T: A  Y% H: f
to setup-turtles . ]9 x" M- |" B/ Z7 h' i( H, m
set shape "person"
8 u# k% p! J- |; k- r' r5 G! gsetxy random-xcor random-ycor- c4 p2 [& V  I0 F5 c# b
set trade-record-one []7 ]. K1 ^/ x( k8 o

, M0 Y7 m" ]  x9 }" fset trade-record-all n-values people [(list (? + 1) 0 0)] ) x: A) O) ?8 O2 \

8 K- u. ?, ]% f: p4 Zset trade-record-current []# [9 |' p' ~) O2 h
set credibility-receive []
; Z/ B! W6 O: \9 I0 Z* T2 Rset local-reputation 0.5
! \- a: K5 Q# o: yset neighbor-total 0
# S" y. X: b6 u- h- F1 W% vset trade-times-total 0+ L5 x" r  p$ K) x& h3 Y
set trade-money-total 0
9 m2 e) x1 B; m; p! `set customer nobody2 y7 g: S4 @1 A/ }1 \7 j
set credibility-all n-values people [creat-credibility]
. |' ?% ?) C4 x- tset credibility n-values people [-1]
: t6 a& D, f3 lget-color4 Q5 O* N' t6 F& p" O# ^; b
9 [# D/ ?4 R) v9 Z4 L
end
6 i% |" q% A2 i. G' j2 D; W* ?! r# L1 O' \
to-report creat-credibility! \: |  H7 [4 u# W' k
report n-values people [0.5]! {% l- ]) `  k  [% b. r5 W
end
1 |8 n' P: X4 |. I
' o: x9 j8 O$ F* wto setup-plots
# |9 D2 M7 P( w( i4 G: m: U9 L9 \: U% ]4 a, w
set xmax 30

6 g8 f9 H, A+ A; B4 ~0 p% h& \% n) a  S+ n( l$ i
set ymax 1.0

/ u) P; [9 u2 v, ]! q' C
6 H' @& K% p3 K7 _3 |) gclear-all-plots

. N  C9 {# h6 ?8 r( K6 j' k9 z" o6 D, C+ ]6 N' L5 k" }, B
setup-plot1

; @# n) ~1 q- T1 \9 _( m- R7 g8 s: A8 U7 s0 Q
setup-plot2
* L5 V1 t' H# O' b+ y! e& X
4 w) K; e# v7 ~' A4 r* a8 Q9 f; H
setup-plot3

5 U$ k4 m  S: r; Bend3 y+ q8 d1 a& {$ `" v' {' g

# S4 L/ @% N' v1 V0 }4 X7 X/ z;;run time procedures
& W' l, K0 G' u- g+ I- n: V. ^+ @2 U; v5 B' p
to go1 T/ _$ D  V4 S/ e! `0 g3 M
3 i6 G* ^% c: z+ l% x/ |/ m$ S
ask turtles [do-business]
5 w: _1 \9 x- P  S" c& o+ ?
end
3 J3 _  H4 I2 ?0 e- \
+ f7 o; v, y6 A$ c! C% i* Gto do-business
1 [: [( a' n+ t6 e
  M1 t! k1 O' `+ F( Y
. Y" W- G; K1 L9 \5 [& u
rt random 360
0 U8 A! x  ^( }! W: A4 d$ V
3 f+ \1 R  b2 W% N( \
fd 1

. z" B1 g' ~9 Y( p2 x  a
1 ~0 H9 ]; J! R, a4 K" B1 sifelse(other turtles-here != nobody)[
! x- s# l5 f- Z; F$ T) u1 l
0 K5 y( \& r7 a: w* X  N
set customer one-of other turtles-here

; B% I. E. J7 C7 Y  u
& p( q5 d$ O) g! s1 y;; set [customer] of customer myself

/ j8 g) S6 `; g* f8 W
  a" R, D& g0 ]5 Z* Z! h, o* ~set [trade-record-one] of self item (([who] of customer) - 1)4 N- g- ~* Y+ [7 z$ y$ @
[trade-record-all]of self
3 w- h' k  n. K$ W. B) h;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ w2 f5 r; P2 ]
; S  |1 @. C: r# @
set [trade-record-one] of customer item (([who] of self) - 1)  I* ]' @4 j% a; y
[trade-record-all]of customer

2 ]9 C2 }+ I3 |2 q2 `$ f7 s7 V: [( p2 e: F9 ^
set [trade-record-one-len] of self length [trade-record-one] of self
5 s0 W- ?0 \: c7 v

5 ]7 o3 g5 e9 B, ?  S7 `& H5 [set trade-record-current( list (timer) (random money-upper-limit))

# N: k) d2 W/ ~$ K. ~4 G/ l. c% H4 F7 I8 w
ask self [do-trust]
7 N+ j/ v& G1 S0 G9 U;;
先求ij的信任度
9 y, M- W1 b. S" b7 j1 C5 z9 F, r, R
if ([trust-ok] of self)
% r- _) H' u- ~- X8 M7 M+ _;;
根据ij的信任度来决定是否与j进行交易[
. ~# p  W1 @  r+ l* Y! {$ [$ m0 [) lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" K, s. I' ^& j# G5 D( r0 t1 m: z

) I+ l) z! C5 l1 ]" _. \/ T$ ~[
: }' q4 F2 F( j1 e
7 C/ H& c! s% y- D1 J' s, I1 }. t
do-trade
9 Q$ w2 j" F& n- F
/ G3 E; a  c+ m6 \4 g
update-credibility-ijl

' b% F( M* R$ H& D! k* x  L
$ G0 X$ [6 Q' U+ Eupdate-credibility-list1 [8 j# T6 @; @- k
+ H* r6 r5 X, f# P4 v
! ^- D! Y. q0 F& P
update-global-reputation-list
5 x5 Z! `( h; m0 n( K9 ?* z

0 p3 [9 G( k% X+ z5 c0 u$ _# Vpoll-class
/ A4 @+ j, n4 S( P. \
$ n3 G7 Y- M$ F- _6 Z
get-color

' R4 \/ j) X5 o
" B+ r7 T6 N- R1 \' P]]/ A$ Z6 o/ d+ R( N( j( d, x+ h, C
; t9 Q5 t- r2 A4 f
;;
如果所得的信任度满足条件,则进行交易# s+ `; S" r( g% D8 q; Q

- N4 O+ I  Z; b) R  ][
: m& I) D& @) ^: c0 M6 w4 V$ C1 i
: W" X  ?1 W7 v: }$ I
rt random 360
+ r2 k/ w" A& X. G5 y

9 s6 E3 Z% s! {: o- _" V+ Cfd 1

6 J, s" c/ F% w( v4 z
+ ^& b5 Z- u  x]

8 n& A$ X, u9 b5 O0 @
& G8 {$ e$ m% b' G) Aend
  i& c2 b& H( `

7 \. p% _; t$ Q' w+ R6 k$ Eto do-trust 0 `$ C  g' `% G
set trust-ok False
: B, U. i% `6 W9 [" C- y- R6 a8 m- j9 w9 |
7 f+ Q5 @& f1 F- C) V* f1 s3 M
let max-trade-times 0' V. N1 s/ r) `5 D& ^3 O) W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 @, U  J8 l! w% \! Ulet max-trade-money 07 S: ?$ V% [! Z7 O# T8 R
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 c1 i5 I! c/ J, L# _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). M% \, \4 H* O( c8 n. ^% w* k' g0 w; ^

9 j1 d$ D' ^& }+ }" o% A0 ?& Q# A& z
: ]4 N$ E' j8 ?6 M- q( Y
get-global-proportion; P# L- f3 g' @
let trust-value7 ~7 E3 }0 t/ q/ k
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)

6 ?% _( {7 J) k) Q7 ?( X# Gif(trust-value > trade-trust-value)5 g& U3 p3 @% P" c. V; N/ |8 P* ?
[set trust-ok true]# y7 y- V+ h# v/ d3 x
end
* J) J7 g# o* w2 V0 f0 v" @/ X9 \3 N
to get-global-proportion8 [0 B$ L& I% ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): E% u. ~( f: j; M
[set global-proportion 0]; {/ V8 N. W+ ]: [2 D1 G* F
[let i 0$ L) j+ V) }7 A( f3 t5 y
let sum-money 0
3 J' |6 ?4 S( i! s* Iwhile[ i < people]+ s* k0 ^: {/ n! W7 E
[! u4 K9 \: I' |" Q& V
if( length (item i
* G. j7 X; k5 A; |[trade-record-all] of customer) > 3 )
2 Y+ ?  `' `& ]. E$ I& V: L
[
3 F3 D8 ]% H1 F' ?9 aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; P8 u& h! O5 ?]
$ S4 D7 z# B- k/ C6 q]
, Q0 X4 }. K+ g/ p+ Clet j 0* a* i+ t" }& K7 D+ g
let note 0! I5 a; P- e, H% l/ k, [
while[ j < people]
% F, |4 @! S: T9 w" n[% D# G) ~9 i1 X! F( L* N
if( length (item i: y# V9 d9 Z  S0 L  @
[trade-record-all] of customer) > 3 )
% W! w1 g1 m) Z1 }1 m8 i
[# X% O, w. u! k( v# u! E8 j& r% Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% M% x. w' ^9 E# m! a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 i) p* P& g7 g, L1 v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: [; B7 L3 l; q9 l/ @. g]
; t3 d6 P1 ?! ^3 n% P' g" C]
9 l: a% s$ [% X$ O1 uset global-proportion note
2 W% w! m. y0 M4 T/ O]2 R2 X" i" s6 _/ `9 W* o" {
end
# s4 [* d1 X  s4 x) w* M3 L# o8 [: Z
to do-trade% j3 b4 [7 y4 ^9 x3 J
;;
这个过程实际上是给双方作出评价的过程7 F. i& I3 e5 o# v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" D0 ?1 \) M! Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 A! W6 I6 D2 U; R* e
set trade-record-current lput(timer) trade-record-current9 q4 s4 a6 V" b/ B
;;
评价时间
% c9 K0 n0 s+ a4 v/ N, vask myself [
1 f. d. A. i3 I4 y* C7 Qupdate-local-reputation9 I  u- c( w# g9 ~7 |
set trade-record-current lput([local-reputation] of myself) trade-record-current. \0 h! {5 U5 F2 }" l
]
- B5 I% l7 f8 y) F$ l6 `set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  x3 D! _6 U( b9 z;;
将此次交易的记录加入到trade-record-one
! Y- `& B& X6 O8 fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, e/ x/ w2 }/ Z6 s- ]/ C$ A0 V8 s! [let note (item 2 trade-record-current )- ^2 W0 J$ D+ p; w) M4 q
set trade-record-current
0 w0 d4 t7 @, l: l0 A% h' q) n(replace-item 2 trade-record-current (item 3 trade-record-current))

1 H( W$ q9 ^% g. {/ l3 ]0 Z! hset trade-record-current
5 V* U# }' |( f7 k* t(replace-item 3 trade-record-current note)) ^9 a4 L" @# Z3 g7 n

& q% [3 n7 a, p" l- G

) _6 f1 x5 k) X: \8 [" J1 Z9 d: @ask customer [# ]9 Z8 P, _  f3 L7 Q9 a
update-local-reputation
( A$ t# e& |2 h( c# @' sset trade-record-current
9 {* @& g  }. {: x% r& d5 P5 b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 \3 f$ Q4 Z9 x* G% m! e- g]
* d" G6 e1 k$ [' u% g
. j' [; ?( q1 N$ s7 P9 N7 g

0 A- X* g0 P8 S7 b7 X5 e3 {6 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* i% u$ x9 z5 W( ~$ v+ g0 _

1 i# R- d( l  F/ \2 [) C6 u8 qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 M! d8 \9 u' U2 U2 [8 H: @
;;
将此次交易的记录加入到customertrade-record-all
  L5 A3 h! z/ d7 F" f7 Nend
0 y6 ^, C2 L. y) Q
$ f3 K4 Q3 h3 x- L% qto update-local-reputation
* _+ u. j! y" N! h, t" rset [trade-record-one-len] of myself length [trade-record-one] of myself  @* F; V* P' b% G; I7 Q1 X7 p

3 u( @! O) P, @% f4 B. J6 M' s6 k. n  a+ y2 J9 i
;;if [trade-record-one-len] of myself > 3
# y, K4 R* a: u( n  o' p# J6 Z
update-neighbor-total
7 _: M. ~! s" f/ B( z2 g;;
更新邻居节点的数目,在此进行
, }0 y3 u9 ]. s$ p& \" K6 M# Wlet i 3/ l' s; b. H' ]4 [8 u* c
let sum-time 0% h# s" j2 o: C" ^0 F
while[i < [trade-record-one-len] of myself]# a$ H. N" s$ q/ \4 X# u: q3 d
[
3 `( {( ^% T) P( |- x* ?6 ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: O, C! h# l% [8 Mset i
% b  x9 N0 w/ ]& F" O( i + 1)

$ n; P' L1 B, B/ d+ b( K$ I]
9 r7 ~! _+ y2 k5 d4 o' L* D  slet j 3
# H9 s# a: {8 L! y$ vlet sum-money 0
# \; L6 N) J6 z6 \3 Q0 W2 B2 x, Ywhile[j < [trade-record-one-len] of myself]( X# T1 ~) v6 X( i1 ~
[: O# M: Y8 a5 V% @' [/ M
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)- t; A1 p! F1 }
set j* o' q7 f3 _) z" {5 U
( j + 1)
2 h7 I8 K* c& ?
]! M' N: S* p/ f; j  Y! g9 u  s
let k 3. a& j+ l6 z& f9 X
let power 0
8 }( `' d6 w' }1 `/ X' jlet local 0
" G* w& y$ t/ |2 T4 q4 rwhile [k <[trade-record-one-len] of myself]
/ z9 I( E$ F& h; r$ L; q4 @8 ^. J[9 u: R9 V- q! U! O' w: s+ g
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) ! F% v+ D. l) I/ v$ w
set k (k + 1)) _4 [: W8 c2 ?. r
]
" U3 r) ^2 {  r  q- o5 z8 r3 oset [local-reputation] of myself (local)0 Z" ~7 k, D. D3 n( h
end6 Q0 X+ O, K3 @; P; S' G+ w
8 t! P, a5 u, U" C5 F) j# D
to update-neighbor-total
. C& m9 t* D8 u! R
' o. X8 t0 z. R2 g3 w% S" H4 fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 D, Z- k0 \8 v: O' I4 p
  c- H* T* h0 H; [  \2 _, i8 o5 D
) |: B; L  M" P( s3 Q, u
end4 P5 p& L/ f7 L

" Z2 S3 x6 `! Y& _8 Nto update-credibility-ijl 6 m, p0 M; R" Q- |" R+ W2 S) r
% U  J/ I1 z" A, u5 n* B8 a) t3 T
;;
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。
0 r5 n" t7 ]/ n2 alet l 0
7 d: \4 Y  _$ Rwhile[ l < people ]
0 u! q) i( P8 B: Z/ A( V9 \( N;;
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
1 e" I( z. v7 h2 L7 P  v" K[
3 T7 G: R9 D- ?5 R8 ]# Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 [8 p, E8 O+ q5 G- t/ U+ J
if (trade-record-one-j-l-len > 3)
  K" J+ W$ c5 \* g# b2 U1 M! I[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-one9 i" n  w9 I# y. ]% b3 c4 y
let i 3
, d5 k# c, a# }let sum-time 0+ E: B: [0 A; H2 R" h
while[i < trade-record-one-len]
8 H  l, V0 e' B[
+ u& x6 I+ P. ?3 V5 U# P* ?! m3 u& Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ D7 i" f' f0 vset i7 N- O$ H5 |2 W, c  H
( i + 1)

$ G6 i7 G: E) E! y0 {* }6 ]- e]
$ E0 y3 s. M1 t6 ^& [/ _6 S( [6 E9 ylet credibility-i-j-l 0
! f% ^8 c3 B3 `- {% x;;i
评价(jjl的评价), t; m6 X( J( ]' d/ o
let j 3  I# F/ x% ]* i9 e/ Z7 P
let k 4
9 ~+ C8 D6 v* swhile[j < trade-record-one-len]# D& ?9 G0 a) U' c: z3 L- i5 x- I
[
" s: W6 r, {6 `) `& Zwhile [((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
* T1 d& r* M: Sset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
) ~3 F" y/ P- e. a1 h* s! Qset j& v* a) u7 Y) Q1 e
( j + 1)

, ~& H- M1 T7 ^]
7 W& i4 H* f+ q$ q. Lset [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 ))
# {6 a4 T, q6 e5 Y: k; e
3 C; x" F1 k9 v+ H. f1 r. W
9 y" E- n  ]: r7 d; H5 U4 _
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* D& _4 S) O0 \/ m' g( n9 G) g( w
;;
及时更新il的评价质量的评价7 P& }8 A/ w. p  R0 l5 g
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 v8 _: z& {2 k1 n+ a% r& l9 U; tset l (l + 1)
, d- E$ M: H+ j( B1 Z: C% I]
8 s7 N" U3 i& v4 Y% A5 e4 L5 f( jend
! x& W1 r7 R9 k3 |9 S% J4 J: K
& U' h4 \) \3 \/ P" eto update-credibility-list
/ `, R9 p/ |/ g8 L9 t1 B" E+ tlet i 04 C& O1 j( z  d7 M" J. e% H
while[i < people]4 N8 l) `0 F( ^. d
[/ y- y& J9 Z5 G. l7 h% W& U
let j 0
6 {9 ~6 ~" A. Q; y/ I# Y, \let note 0
5 W2 _( w3 ~0 F; k+ vlet k 0& H% f$ B* n5 b; z5 T/ f
;;
计作出过评价的邻居节点的数目4 j8 t0 q3 F1 \+ D9 n4 V$ L/ p3 o
while[j < people]
( i( T: M4 W: H[
8 W  g1 k/ j( j' k& }/ hif (item j( [credibility] of turtle (i + 1)) != -1). H7 V0 S" i7 R( s
;;
判断是否给本turtle的评价质量做出过评价的节点) b; B9 b# ]' L! R/ L
[set note (note + item j ([credibility]of turtle (i + 1)))) \& r3 k+ g" c5 C1 C' M+ {
;;*(exp (-(people - 2)))/(people - 2))]
* X$ O+ \4 r/ a# k$ Q6 v9 b" j
set k (k + 1)4 i- g( L2 v  O
]
/ \( l6 a3 I: |! Wset j (j + 1)
% M& r% c6 ]3 v2 A: M]8 w* m' g# d) r2 r# u9 p, j
set note (note *(exp (- (1 / k)))/ k)
  w' H/ w8 @5 fset credibility-list (replace-item i credibility-list note)
$ a& p6 e) c& o& yset i (i + 1)7 q( w" w, J. j4 Q% Z
]
1 I. Q8 R% B* F: Send, n/ r* T: W5 C

4 p. ~7 X( l% o2 xto update-global-reputation-list
$ L! r! R. d* G, f+ _let j 0: a+ {* F8 b$ Q# _' ~7 I* E
while[j < people]* a9 ~! s5 A% B
[
- p+ ~5 l7 U, nlet new 0
, G4 `( c2 \! {7 \  f# h;;
暂存新的一个全局声誉
9 k" z6 S: A: m% h% ^& Glet i 0
) c( ^1 e# D- Plet sum-money 0. \3 e5 `" _7 }1 Y9 c: T" T6 P- i
let credibility-money 0  \2 V( T( n, ]8 k/ a/ {3 s7 c
while [i < people]% J2 ?+ u, y4 p  ~
[
) B; c; E5 H. {0 R) H* Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) S2 M5 y% t+ k! B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ `) y1 w! n0 I$ e
set i (i + 1)
& u" Q% R# w1 N& [' R) ~5 s1 p]! k* b3 D, p( L
let k 0
7 l3 B7 X4 L' v+ Llet new1 0$ L* \6 m  y6 b% z; [0 i
while [k < people]
/ N1 g/ ?8 R, a% I[
' T/ s4 ]+ z* I/ p/ o; S; kset 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 ~& r" w# I8 X- E5 Cset k (k + 1)
  c( O! U( y  q. ?8 F% T( a]% ^! [8 m7 A# d/ d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : v) F2 e$ T' a5 j: p& ]
set global-reputation-list (replace-item j global-reputation-list new); [! Y6 ]. Z$ D9 ^* {* x
set j (j + 1); _( c1 h+ }* K& {. @
]
" b, `9 a3 p% |' K4 g! U% bend% ^) `* {9 O0 ?3 K6 j0 y

5 H  |$ N6 _2 c3 d
0 y' E( n2 h# n0 ], Q" l* _: _& D% g$ [% A- z+ c# u
to get-color; }" G' {4 y8 m6 M3 ]- U. p' c
" W+ S  U; R4 g! x
set color blue
9 r+ B' o, z6 [7 T# Z" e- U0 y! G" y
end
3 R6 {1 ]6 ]# d
. C& @- _5 {6 Y( L6 jto poll-class% a5 q5 ]' U- A4 e
end
; x, `$ h! a; h2 f. O( P4 e+ }
( s: B+ n1 J( q2 I2 e8 Y9 u0 yto setup-plot1
; A( I) ?. x( k6 y& i& ]* n% Z# a. y( a/ x. b# E4 |
set-current-plot "Trends-of-Local-reputation"

4 p' @( _' B/ |7 @" Y) U* f7 _
4 Y0 Q! R; z: Q* z7 t8 ^set-plot-x-range 0 xmax
: S* H% k3 q3 T" y

8 ^1 @7 i2 h& f- J# r/ ^set-plot-y-range 0.0 ymax
  H1 F- o+ G1 I. V& i) J$ u- [
end. Y) a5 F8 H! |2 B9 r3 m
3 H+ r8 d, m0 f' b/ u8 e, g
to setup-plot2
- }- ^3 a" s1 a2 N' e  o
" B3 B$ c8 h) Z& j3 Aset-current-plot "Trends-of-global-reputation"

5 a# C' {5 }0 V
7 B8 A* E" t& r2 _3 g: aset-plot-x-range 0 xmax

4 C4 s* w3 T! I( d: G7 O
' G/ ^( t3 A+ f6 c! tset-plot-y-range 0.0 ymax
( _$ e4 c' J1 S6 Y
end3 o' C6 k- m, g3 @, v

( {8 U: C! }, C( R" Q' ito setup-plot3
& L' K- h% P/ c. F0 y9 P, j' z: S4 i1 D7 v. E' z
set-current-plot "Trends-of-credibility"
" p: L0 E1 x) i
; `& J: @" o  c) \9 e3 e, L) e  r
set-plot-x-range 0 xmax

4 H) U+ k( u/ B& C2 t' V0 P& P- s; O
set-plot-y-range 0.0 ymax

: N2 m) r$ T4 Uend1 T3 j- w7 v+ q& E( a9 C  R! r' \
6 Q1 t( n5 E# p8 D* D
to do-plots3 ?' O; g$ A/ l# w- l4 w8 }
set-current-plot "Trends-of-Local-reputation"# @" O/ m/ c9 q7 Q
set-current-plot-pen "Honest service"
) G- w7 Y+ p( C% t/ v6 z6 fend$ z' a! o4 {. _4 K) Y. o! P
' H6 Y- ^% k- f
[ 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.
/ B3 H* t. Y9 V6 u( n* u  G- U% b  n$ _3 J# Q
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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