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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:2 ?( I2 y1 g) Q  @  l7 W
to do-business
2 H" G" `; }' V) w( Q rt random 360
) q  h$ H7 Z8 {1 k9 r- o fd 1
! f+ v! e, n3 q5 d; F ifelse(other turtles-here != nobody)[
8 N/ l- T: Q( e% m5 D+ B   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.% V1 ^$ B  B/ c; P9 w: v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 a$ F' V% c8 [- W% N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% [' [9 Z! F4 \6 C8 J- J7 ^
   set [trade-record-one-len] of self length [trade-record-one] of self
5 a" `  E7 d" F3 ~/ l$ M   set trade-record-current( list (timer) (random money-upper-limit))
, o8 W( F" R1 q5 S  u4 x- q2 P0 F4 g
问题的提示如下:
) N" {0 e' \* s: p6 R, {& e( f3 J2 }2 U, B+ K. f5 w. _
error while turtle 50 running OF in procedure DO-BUSINESS
* ^; e! r' Z8 m6 l4 K. ?; {8 V  called by procedure GO* U! Q1 m( a9 A, e8 I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& S% k3 p6 s$ e: i
(halted running of go)6 W  s. n% S$ ], A0 v
* f" R0 D1 m' M5 Y+ f& C
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~~
# Y% f( g# X& 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, ~- D* a( @& |$ _/ k/ X" o
globals[3 ?$ ~  U  t2 J4 l- G! z+ p
xmax' L- F3 Q/ z, Q. d9 Q/ X
ymax. K9 x; }) N7 c
global-reputation-list, Y# M, _# r6 s# U; C

- b  \3 @2 N$ W;;
每一个turtle的全局声誉都存在此LIST3 _, \% M0 @# c0 Y1 C' D
credibility-list3 y- t* g$ u+ p$ n$ L. |) u
;;
每一个turtle的评价可信度+ l/ s, Y# H/ I: L$ D6 J5 ]: ^
honest-service
$ O9 `6 N2 |! }+ r% yunhonest-service
5 r- B( ~" E% p- B) \1 o9 D5 }oscillation
) D+ B$ P. p# n- V# k8 @7 rrand-dynamic' z4 Q9 W- n& w
]. ?& v7 S0 D/ `* I2 N- H
" f2 i. l" e8 {/ ^- i
turtles-own[! O8 `2 Q$ B/ }' _  f
trade-record-all7 r2 c# L! P7 k9 g' a
;;a list of lists,
trade-record-one组成  P  n6 M9 d" e# r: \8 @
trade-record-one, q5 Y5 T. H2 C- {! V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( k& d+ A! O( U0 L& ~. y: e
$ L' R5 B6 m; e, {  N;;[
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]]  ]/ C, G4 Y8 x7 L4 }: Z# J/ C2 v
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]4 Y- L0 B$ C" X0 A9 R2 o+ \
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
/ @; i2 G% ]9 b# C3 R/ ]neighbor-total2 M- h% s' x% |% x( i
;;
记录该turtle的邻居节点的数目0 p: T  r0 H6 t: j7 F8 B" {
trade-time0 ]" T5 R8 ~4 [9 a. v
;;
当前发生交易的turtle的交易时间
; W, K0 D5 X) V. H/ n% Z: q0 wappraise-give
! S1 e7 s4 I; ~8 G;;
当前发生交易时给出的评价
6 l/ {; r) Y- cappraise-receive; r0 d9 }5 @: x* P% |# A
;;
当前发生交易时收到的评价
; v% H# ]  u4 }* C: H4 xappraise-time
' a" m+ M" t( {# w4 K;;
当前发生交易时的评价时间! t0 q- q7 u1 P# N! s2 @3 p' i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- J; e  [$ C" }1 z5 ~+ Vtrade-times-total
: s1 m( @: n# @3 T/ B! e" N" e;;
与当前turtle的交易总次数! g$ |+ t+ V" L  p$ q1 m
trade-money-total
! u9 N- f5 S  e# d2 u;;
与当前turtle的交易总金额, `! q) i9 e0 U5 Q. [
local-reputation
" n# D: g4 ^( {global-reputation
2 y; L4 S/ D# t0 |2 wcredibility
( ?. j; q7 T) x. J/ y;;
评价可信度,每次交易后都需要更新) K, G  I. z3 k* ^+ E3 q
credibility-all
$ y) h+ T' t9 t6 w0 X;;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$ G, p2 {1 N8 W. g8 d* e

; `" D$ t/ z5 D4 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 D' l9 E0 B* U2 `2 @3 B
credibility-one# n2 R& t- v) W! {! g" \
;;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people1 O5 @: S0 b6 p4 v; T" z8 ?
global-proportion. e  v6 G1 a" R7 u/ e- z/ S9 h
customer
2 p* A3 T* Q, Q. r7 h. g* g3 _8 r1 scustomer-no
# S5 M! u0 [  h6 Z! ltrust-ok' f, e* U' w5 ]4 b0 h3 A
trade-record-one-len;;trade-record-one的长度
. @- u( o* T. _( X]6 j9 G3 v- k* f
2 g/ i7 L2 F2 `* {5 u
;;setup procedure
/ j8 ~/ W2 v& }4 n0 x7 K% r( ?
1 \1 G# |( ]& v8 K) `# z1 L+ Jto setup! j- d9 ^4 E& l$ |
1 Z+ k- d8 P" {/ `5 i  z: M
ca

0 b, l1 a- {+ g: B& p& m9 @" w* D
$ S* k; S2 e9 P& F( h# T+ I' c8 Hinitialize-settings

# D$ n5 L, \2 `$ F- v5 g1 M# Y, Z& W3 O6 m
crt people [setup-turtles]

% F" y5 I2 T, P1 T  X7 ]
. [% h8 y  R$ K0 `: O' j) P! Kreset-timer

+ u1 u( a9 ?: f
3 o3 s$ c1 |/ r  h6 @9 F" f7 Fpoll-class
3 T! G0 o3 r' ]& i! T

; j* `7 V4 n+ y2 l% g) V/ z1 Fsetup-plots
8 M% D8 s# }0 ^6 I- @. Z0 C

6 w% \& M8 M, ?; ]/ O& J3 D3 }do-plots

8 @9 Q, R  M) V* _end4 K# Z9 f8 B! ]2 _/ Q

  e9 A6 Z8 B: Oto initialize-settings& a8 m/ d2 \% j4 f6 s) i2 a# J

6 a$ V: n; N/ n- Z& \, \: c3 N/ eset global-reputation-list []

4 p5 m9 X8 J7 S& u/ S3 a" l( I5 S% d8 N% @
set credibility-list n-values people [0.5]
3 D# `" Q. B( i! ]% d2 l

6 ?8 c5 b* R0 r5 V* dset honest-service 0
- W+ E& l- x# s" i. r6 O7 \& f
1 l$ t  E; X3 a( u2 _- {
set unhonest-service 0
$ |0 b0 B; e$ K) ?# p

, g/ [( x- [! Z2 L& A' j' k, dset oscillation 0
  c& C; r" E! t7 T
7 j' x, ]  \% Q1 p$ M# H( ?6 p
set rand-dynamic 0
9 ~( A( y  F6 j% h' \5 D/ D: T7 E
end
* |- u9 X9 _$ t) Z" |2 h  W$ q4 ^) ~6 r9 Z' L) `
to setup-turtles / n# ~! L* a# o3 k( M
set shape "person"  X! g9 R% |7 Q& Y
setxy random-xcor random-ycor* f* f. B4 }, ?
set trade-record-one []$ h; ^: M6 D& e4 u

! O, p  R8 w6 zset trade-record-all n-values people [(list (? + 1) 0 0)] " j& k! [3 z: I2 a

0 N2 {' V# q; Q& gset trade-record-current []
( C0 A3 c0 E: q% {, ~$ ]2 p8 Gset credibility-receive []
' t# z2 S1 x5 S" x7 U& f* Y/ ]! v) j' Qset local-reputation 0.5- m( P4 o; [9 Y. R3 x8 K
set neighbor-total 0  I3 R' U' D+ n6 m5 Y2 W
set trade-times-total 0
9 k. w- \7 I$ y$ @set trade-money-total 0" ?1 }! h4 e& T7 W. ^* W& ?& _
set customer nobody# v- V. ^# k* {% G
set credibility-all n-values people [creat-credibility]5 H2 D. J1 i0 ?
set credibility n-values people [-1]
6 i1 @3 m2 B, \! x9 ~( hget-color
7 F6 a- {- P. D3 E5 ]
& s1 B' e$ S2 y6 v
end& \, s8 \; ]; U6 F

" k( k9 K- X0 _6 ]) r- J  [) nto-report creat-credibility
+ u0 F. v& {1 J) g: V. areport n-values people [0.5]& r$ x. g, `( ]- R9 ^
end
8 O- \# z/ L, Z1 ]0 r
) E0 E7 M) b) o: F- fto setup-plots
! O  ~& h6 n1 X* E. T2 `: d
' h6 l% @3 g2 V. k, Q: V' h- yset xmax 30

" u" w, }  l' R' a& M  X/ p- A6 n6 }# U, `7 s% Y3 @3 X( b2 f2 a
set ymax 1.0

: l  T# g# n9 x4 a6 s5 b4 C4 }' z
! u' x3 d! b, X- Dclear-all-plots
: z6 p8 D3 i& |3 D6 H; G3 _
2 f! _5 L6 Z+ _  `4 p' G. _* y
setup-plot1
7 x8 s0 l% ?1 R# R. F; u  T
- C$ x4 {+ W$ S2 G6 [1 W  e. }  O
setup-plot2

+ A6 L9 \0 z4 w! c( f0 k
. B9 r  p/ c3 h. J$ Xsetup-plot3
' }( b+ ?8 I+ E
end
5 O: n2 b6 ?% n. [! r2 H$ Q9 r3 g0 P& i# T
;;run time procedures! s+ j" _9 O; j6 j( b
0 I. d% y1 c* H$ o( K6 E6 i
to go
2 w$ H- i( i3 h
( W0 e/ |% R9 t; cask turtles [do-business]

5 b2 ]7 q& t8 I8 n" M8 Send  B5 E9 c; b5 a

, R0 e+ ^$ U! n0 xto do-business 7 q7 e4 z( G" c' N: c) @/ M
* s8 A, ?9 G* o# b6 B5 n( p

! P# L& N+ q: qrt random 360

, Y1 P* \$ K0 s2 x
2 e8 n; j/ m: `2 X3 Qfd 1
& p% \5 a: I3 r2 I5 v

1 G% M! P+ L, M; c1 _ifelse(other turtles-here != nobody)[

: v0 d8 z' w6 C7 A8 e* M  r: q* ?% i) N/ ]
set customer one-of other turtles-here
& d$ Q9 I* N! P7 T1 {7 l

- y3 b: i) ?4 Z* e7 R;; set [customer] of customer myself
: N5 ?. Q0 P; p  H4 R3 e* E

. Y3 T) U/ n; H: r" Eset [trade-record-one] of self item (([who] of customer) - 1)& s3 b( e7 n  y) q. R
[trade-record-all]of self% a8 U8 M* w* V* v2 c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ ]$ Q: L8 q& A  q  o0 R
- u$ b. j. F: d% a
set [trade-record-one] of customer item (([who] of self) - 1)& M/ q* U: {& [$ q
[trade-record-all]of customer
3 L% I1 w$ n; _+ i* X& c

$ _% x1 r( L0 r6 S2 ~& ^3 I3 ?* O* O( S4 Fset [trade-record-one-len] of self length [trade-record-one] of self

  c1 k+ q7 `+ H1 E( d5 k" s( O. j* G3 i2 y7 T" H
set trade-record-current( list (timer) (random money-upper-limit))
! X. s+ d4 t& X$ D* t" Y

0 ]$ }) x0 h6 t& N% Mask self [do-trust]; w4 D5 R! J; P; @
;;
先求ij的信任度0 F2 M9 X* L- x" {
3 A& J6 p9 P' t
if ([trust-ok] of self)+ K  ^1 M& Q* a7 x% Y
;;
根据ij的信任度来决定是否与j进行交易[. n, {& Q! ?  \4 z* B- J+ H7 X# j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" {/ A8 n0 M, z; @9 a$ Q9 ~9 |( \7 R7 a# v# i' S. H
[
, D7 J# I4 m- o% P1 X3 m( ^

# c+ m7 R: B0 S7 Ddo-trade
' _2 q& {1 y+ W% A: }
9 e: n* J6 h, c9 M1 W6 o; z- `
update-credibility-ijl
- `5 I7 `9 l& L
/ z3 C. l. F( H4 A+ h; n$ ?
update-credibility-list
" N3 F# W- U* v( P" W" C

6 [' v- G, E. e
' W" {0 R) @" S* _7 n/ @( Kupdate-global-reputation-list

4 T' V( Z! T0 \& S  v3 l5 u) E+ {% c8 I! U; _$ i  ?' L2 c
poll-class

" ]  a* e, v( z  @8 b
; {- |. l/ v, d+ H. L$ j; Zget-color
* y( A; q8 w  L/ E% e' Z+ E
1 z9 O! P' z6 K( w) M) ^: ?- {
]]) q$ C+ F# k- J$ k% a) q
( C& d. n2 v0 Y  k. m3 N. m
;;
如果所得的信任度满足条件,则进行交易4 C' y. R* s; I9 I- F( e3 `
' C" a/ K; g3 F8 D& X8 N) e
[
# V: ^$ @; ]5 v: \7 t' G, O( Z
+ _3 l6 |/ s1 X. l5 g$ J
rt random 360

( d* |/ m( `2 l, v% t# K7 b$ i/ C  l1 [% V
fd 1
: M" \3 _" z; v* j; `: V7 ]

7 h% I# a) c2 p2 c3 P0 @]

0 @# s) J3 l2 ?. u1 S3 V" D
- e7 s& f) c" E5 ^3 z% ]end
9 @7 `$ U0 @5 q9 n- T" F
' @" n- d" M# M" Q. s5 c- a* P/ `3 i
to do-trust 8 z% O, B4 K' K& A% U6 M$ Y( s
set trust-ok False
& k8 P3 m1 q" y+ D& L' S
+ o. d! D) s4 A  a6 ~
/ \# T4 K& M- a4 d
let max-trade-times 0
+ g  J2 V8 Y9 b+ k9 m' r: W) g* Dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" m: B% [# u1 l
let max-trade-money 0$ u4 \4 i3 B( |% _: Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 e4 a+ [! A7 z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), K8 K- }# i1 W
* H& B1 j; Z# l
- s9 ]  |; U! J. @: T3 i( ~% x
get-global-proportion
- w" b! F9 e9 p$ U. F0 ?5 @  Nlet trust-value* \4 n3 K) b8 D* z  M! 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)
. I! y; Y* k; o1 g
if(trust-value > trade-trust-value)
$ g) F& ?: |! A5 e: j[set trust-ok true]
( Q, n% E, `: Z! i1 qend; p2 V4 v' G$ ~5 j* S# W2 C0 G: H
$ U! q; y3 g( P8 p
to get-global-proportion
) p( _" J% y8 _/ d2 k9 H! difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). N+ h( Q$ K5 C, d) N
[set global-proportion 0]4 M# Y( t- F1 L) y7 p/ {5 O( E
[let i 03 }- x) }/ }% E; h
let sum-money 0) G3 x+ z# l$ x% ]7 t8 A% v
while[ i < people]
9 I1 U: p# c6 O2 V) |6 |[! n0 H) M) c- Q! l7 T$ a+ P% G! m9 o1 g
if( length (item i6 i7 i' U1 N# t& }0 R
[trade-record-all] of customer) > 3 )
, r! i9 ]+ w6 D+ x, B/ R
[# N1 T3 l# S4 O- p4 l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" r/ l$ o. W& h) h: D]+ v0 n/ k# t" q# k" \/ L* g
]" w1 }  i2 _+ K* Q' O8 G. N; F+ z: j
let j 0
* `' k. ^* ?  v% k5 @let note 0
0 s& \+ H! F# F. X+ [- D+ y2 E" r; awhile[ j < people]
+ w, \% |2 m# H[
& z7 F  ^: V3 T. \# b' L& y) M2 t+ `if( length (item i
6 Q+ i  T! h" f* `[trade-record-all] of customer) > 3 )

8 K) J" K+ Z! x$ e2 h' J[, v! }) G9 M6 F+ `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 Q2 d7 u+ i8 h- b. s. Z* _) b+ c9 q4 A  s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 O* b# q& T  S* h) R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' F3 h  X- j9 d  H- []7 |7 N8 J' f' l% O5 ?
]& E3 \5 I2 C" C1 T, ~. t7 C0 [
set global-proportion note
- b/ M8 m' v) n4 l& L( ^' ^]
. r5 N6 k: J; a3 v2 {end
% S! g. t7 [3 P4 G1 s* W
5 K9 k, K0 {" g  g1 c  ]3 _: fto do-trade
. X! A% a2 Y7 w4 ?0 I;;
这个过程实际上是给双方作出评价的过程3 n7 X9 v% B/ @. n0 U- O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 Z5 }. z( P) H2 X: {! Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# t( C* {+ q3 `4 M: P
set trade-record-current lput(timer) trade-record-current
& ^9 A7 b5 e0 |& d;;
评价时间
: m1 P1 Q& A) y# wask myself [
. L3 M0 S5 L5 C& t/ Aupdate-local-reputation
7 m- T- }. u& V3 k# r+ Uset trade-record-current lput([local-reputation] of myself) trade-record-current
  E* ^' n6 z0 j7 q, n( d]7 R1 d. q" M$ D. a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; G/ s9 i( R8 z1 w' l) y  C4 q) T6 K% ~* a;;
将此次交易的记录加入到trade-record-one( i- T5 W" t% r, {8 {1 |: j
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- o$ g! u# E0 p* `- {* y8 m  d% f+ b
let note (item 2 trade-record-current )# f" W- T: g4 w# S) [: X! }
set trade-record-current
4 L9 u8 ~, E4 _) D9 P(replace-item 2 trade-record-current (item 3 trade-record-current))
3 G4 V' z& p8 N/ [& a' g
set trade-record-current/ c0 h, Y  X7 G7 U; ^
(replace-item 3 trade-record-current note)- ?5 w. p3 y8 S. [6 Q  n! Y
& N( G5 F+ E" |5 P& U
3 m* W! ^9 m$ I2 L5 z' J7 ~3 x
ask customer [
7 \5 b9 A, q* N$ ]0 ~2 @& Xupdate-local-reputation
9 k# q$ q4 x9 a$ Sset trade-record-current( i" _& |) K/ z% V/ T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 G4 }$ Q5 p  f: s7 j8 M
]
% J1 w% B  r* q. o, x5 N, Y+ g! A) z1 {' t5 H8 P
1 i7 l7 e% r$ v5 i" X1 L  [
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 ]; W2 [% O5 ^4 @) `

+ b' \" J6 Y3 ~set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 H7 A8 p" j- H5 ^% S
;;
将此次交易的记录加入到customertrade-record-all
% K2 {+ p1 u! Zend
2 u% g+ M3 l. r' m4 c+ h6 q% L$ _5 ~% Z- m
to update-local-reputation
& ]- g% r( V* M4 u3 P# ?+ Lset [trade-record-one-len] of myself length [trade-record-one] of myself
  p2 l0 G" |# ~! l5 \/ C6 V$ L3 C  u$ k4 e1 G1 c$ {4 E

5 W2 G2 b% J$ I# p* I;;if [trade-record-one-len] of myself > 3

6 t2 \  u4 l* T! b4 A# }2 ^update-neighbor-total
1 P1 |; J. A. H- k;;
更新邻居节点的数目,在此进行. `7 s4 x, E2 {6 Q& ?$ M
let i 3. N% }1 d; O# ?( I. }2 }
let sum-time 0  S7 }1 |2 N/ M
while[i < [trade-record-one-len] of myself]
6 H% F' R3 S( D& a. |' E5 Y. G[; m% ^, N& u6 `3 s4 x; H$ O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( G7 t: \% F$ @% n
set i8 @$ o/ N0 s! q5 N
( i + 1)

, }9 x& ?# `4 l3 g0 R6 J6 Y4 @]0 h6 j6 Q  X: Z; F8 e0 X& m
let j 3
' M+ w' k2 N4 Vlet sum-money 0
" ]+ J' C6 ]( a' p( [7 Y" g) ^while[j < [trade-record-one-len] of myself]
2 `& T: v' S- x! y# R0 c[
, {9 `9 b" W- y% A0 ?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)
  {, z6 e/ Y/ xset j
4 w* y; `8 z: @( X) |" V( j + 1)

5 y8 c. _% y1 r+ E7 n$ b0 _]9 Q* y! ]0 V  u" I
let k 3
7 t+ u% }( c& xlet power 06 y9 {7 I! E( O  p& I
let local 06 B4 b- Z* ^3 d. g
while [k <[trade-record-one-len] of myself]
9 n8 U" h2 {8 v# R: @  K& O[
# b* I0 ?5 C! g7 |+ lset 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- W8 y& }6 {% `1 x1 uset k (k + 1)% {+ T- x* @/ k# R  H  y5 z
]
8 e- Y0 e) u5 ]. m- Pset [local-reputation] of myself (local)
5 c: b) V2 q  U- D) N' Pend4 D1 Y# ^, w- O/ a5 v& [
9 f) x( Z2 ?( m9 N2 m# J
to update-neighbor-total6 q% o1 \0 w# G
  ~- T& T) k# `$ S# T0 D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  S1 {0 e' [- b& _/ _+ ], h, F# a( C( S9 i! }5 B6 y; y
7 l3 N8 Z" f! \: @# k8 w0 f9 A, D/ K
end4 g3 `" _2 n' F% p2 V3 q3 }

4 J& Y! V; Z  }! }, q- Jto update-credibility-ijl
+ d. h, ]5 i5 y: k/ q' L7 |& ^' G
9 R3 j4 c) y' o8 h6 S( @;;
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。) f' g1 P4 b: y  K
let l 0
3 v$ x; l# o( |7 F3 J; Dwhile[ l < people ]
- V3 u. c9 ?9 i9 o& g;;
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! J7 r# b# J) J5 g% ]- ?! |
[+ V) P7 R" \: h  Q! u( r4 R) j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* Y$ B# E1 w; P: Q9 S* B$ T5 v
if (trade-record-one-j-l-len > 3)7 ]& W2 s2 U" }( a( {9 P/ x
[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
& M6 w2 t- Z, t8 t) j- U8 I- jlet i 3
3 o1 Z. {! \; e6 ~2 Qlet sum-time 0. @7 r+ O6 x9 l: B
while[i < trade-record-one-len]
5 f2 y" k; I6 w) S0 ^6 y4 w& L5 h[5 {) ]4 ^6 `1 F, [# Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 a3 h8 r" E; x" ?set i
" E! r  D/ n" A( i + 1)

6 v: S7 u! s: y5 {0 i& |]' {8 n/ m/ Z9 G- h2 N9 [+ M8 _
let credibility-i-j-l 0
: [- c& g& N/ D5 h5 _1 Q5 d/ c;;i
评价(jjl的评价)
2 c. @, b$ y9 u+ slet j 3  ^. M$ k, d9 w
let k 42 h3 w: \1 U* g# R6 M: {
while[j < trade-record-one-len]
* d2 q( E" g: ^[9 |) W/ y5 m4 q; _
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
' c7 F; N  n( Y  {6 dset 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)
" p( Y3 j% L8 O9 h1 v9 v$ E, A6 mset j# H2 ^% `; B# Z# n6 c
( j + 1)
5 @* `. I, @7 e
]
5 K& ?- ~4 a. U6 j" Z* Qset [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" ?, n* P8 ]

1 }  B8 `! F1 K, J, l7 I0 V" |6 v' t

2 I. }) i1 z0 l: w; g: Zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 i/ x& o6 y6 D;;
及时更新il的评价质量的评价6 @4 d- C$ r2 C4 o9 v* }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ f" C3 n& a, q3 x, Hset l (l + 1)
7 J% p3 \6 J* y( j5 F. ]$ r3 U4 J% `]3 F  {$ V2 T3 o9 Y( w2 t
end) V) \" L+ w. [' A$ B8 A
) f0 ?( Q# B2 x
to update-credibility-list
( N; H5 @; f" blet i 0
% V7 M. s4 E: ywhile[i < people]7 B5 r8 ]! _9 P) _, E: D4 i
[
- E( \9 S9 _; X5 m5 B! @3 clet j 0& y( m2 Y* T) Y
let note 0
! }2 g2 i5 l9 I2 p# zlet k 0
  M% ^3 M. g! T) ~% `;;
计作出过评价的邻居节点的数目
% e, g& A8 w$ ?7 D5 Owhile[j < people]) U) `8 b4 h! }, M. [! O8 K" q
[5 x6 _$ [9 v& Q1 {8 E2 }" y, S: W+ g
if (item j( [credibility] of turtle (i + 1)) != -1). U( |+ W, y3 S8 e" V
;;
判断是否给本turtle的评价质量做出过评价的节点
& c& g, V% _: K- d7 H[set note (note + item j ([credibility]of turtle (i + 1)))- R( E# h+ P: |0 f; W1 g/ |
;;*(exp (-(people - 2)))/(people - 2))]

4 r0 E6 s& s0 N/ H0 G$ W% P0 Iset k (k + 1); x0 N5 K" v+ \  R2 o% A6 o
]3 m0 r4 ]8 D2 g( u$ J9 t3 c1 A  V; A
set j (j + 1)0 }  B7 m/ X% x. ~* d; \, j5 U: W
]8 ~, K# ]0 u  J7 [0 S
set note (note *(exp (- (1 / k)))/ k); K& z0 q3 `3 ?1 T* C# {
set credibility-list (replace-item i credibility-list note)
9 @( i: E6 d2 O" l. n' Hset i (i + 1)
( u# M+ }! Z' T+ [. T]. [: H7 Q) W1 e$ l& D
end$ T1 D# [/ h8 V/ \: U; `
  y& L9 p. }! S7 J0 O' ^
to update-global-reputation-list9 I+ A" x0 ?6 a: g+ m7 e! `( Q
let j 0! d$ o5 n4 _; T  m' [6 T
while[j < people]2 \5 @% g) E, c$ H, [
[
0 G& `1 y; g" O7 X+ }3 Mlet new 0
& ?/ [! b2 n! ]. t2 W;;
暂存新的一个全局声誉
5 A7 m2 W: `$ C7 x6 p! E& ilet i 0
% m0 `( S: }8 Z. hlet sum-money 0
7 `, q9 Y; y8 tlet credibility-money 0/ t9 S) y2 }& ]. r! ^3 e
while [i < people]0 k& f) W' ]/ b# C' @+ U; v$ K, L
[
- C! E5 u7 v8 p2 ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 @; ^' M/ h/ L, p# w5 V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 t$ H% I( ]* ^& Y" Lset i (i + 1)
2 p0 Y6 p9 ?" j# a]4 u- F) \9 ~; P$ z6 T8 s" F1 x
let k 0' V% \" }* o' a4 [+ E( z/ f
let new1 0
) O$ |% _/ U7 ]) k& gwhile [k < people]
! N" y6 X+ e" X! E/ j( @0 |/ w[9 c$ p4 g3 z8 |, z
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)" v' b3 L! u/ n
set k (k + 1)( o* D( p$ l4 L  c- A$ g' M
]
6 |3 t6 P2 ~8 Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 I, y- q: M& P& r7 ^* j! S1 B: rset global-reputation-list (replace-item j global-reputation-list new)
1 I% ~" A" j  i9 V3 @: k! zset j (j + 1)1 {/ L, r7 J( ]% R$ M7 U, Y
]9 s" x) [2 N2 V  W% E
end
1 n; P6 R$ p0 A  O& Y% A! O6 w& Y- B
3 a) ~( }) R7 g9 j! q3 e+ E  Z$ i
  W% {2 g; P8 j5 B+ w- _$ F( e" k/ H  y0 @+ }+ P- S6 C9 o
to get-color4 ]' X0 r6 T# {

# R. v3 n) H1 X) t! Gset color blue
3 k4 n  N) U% e. i! ^, e' x
end0 N4 a/ K# ^, k

8 B5 L- G5 h4 |/ Kto poll-class: c# h! w* _  k+ H) D: z! X& p4 v
end
- w  P+ u$ b3 A+ K' ?" a/ T2 E/ Y; \0 }$ N
to setup-plot1/ S7 \+ S5 ?& R" a

7 w4 h1 Z, b6 ~; l  H8 V  Cset-current-plot "Trends-of-Local-reputation"
! Z# \( e- ^4 ?% ^4 Q
. \; j" Y- S+ v& w" ?( t$ K
set-plot-x-range 0 xmax

# @' l! j) D+ q7 A2 ~+ C% C. t! o+ r8 I6 l' y: }% j9 O) W
set-plot-y-range 0.0 ymax

0 w: V2 Q- Y7 L' t2 h8 f+ Bend
( n  O( a. a2 u  f1 n( w9 g
+ Z9 w, L& I% T/ M1 D, i0 kto setup-plot24 Y$ U+ c- j5 U: P5 x% y3 F
9 I* @" l) D) B2 g% i+ C* d* V
set-current-plot "Trends-of-global-reputation"

& J% S4 d7 _/ x% ~) Q# A/ F0 ]# @+ D, v8 s( E5 ^- C
set-plot-x-range 0 xmax

. d4 W/ t2 l0 F, m% k" e# ?2 T5 Q3 H1 v
set-plot-y-range 0.0 ymax
# E8 y: M. Q& ]8 O5 ]9 D
end
; H- e. ~1 N1 L2 U6 ]
$ v3 I1 ?: F) {! R: O* Mto setup-plot3% y* G5 ?2 y" |( q* R: v

' g9 x' _  T" v6 Uset-current-plot "Trends-of-credibility"

; a4 U' J# c0 C
5 F* A4 H- n6 a- c( u0 Q6 ~; Tset-plot-x-range 0 xmax
8 v9 `) ~" o8 I  K1 [  Q, D" I/ t
! u) F9 _9 y% L+ R3 ^% o
set-plot-y-range 0.0 ymax
) O/ M$ k! }- W" Q
end7 d& w- K* i/ S
- ]7 }; `/ S% J6 `* i& W1 s( Z$ u
to do-plots, m- |& G4 O9 p6 w
set-current-plot "Trends-of-Local-reputation"
( _; G* ?, B  G% X$ V8 qset-current-plot-pen "Honest service"
/ h2 f4 X: J+ Send
- E2 K% b# |! F# k* v
+ \) C1 R1 q. n; K% o9 c2 R# x[ 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 q# `" K$ r- D2 h7 a% l8 \7 G2 h6 n6 Z
( h; \4 ^  H( G: S5 s  k
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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