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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:- o+ B' ~# g0 ^4 B, o! W
to do-business 0 s) A8 ^5 N$ p3 Q
rt random 360
4 F. E( q- c) L fd 1( v" w8 w4 c, j0 _
ifelse(other turtles-here != nobody)[( v/ n4 Q( S4 j4 w
   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.+ {8 I% T' k) a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 ~7 M, W4 u, O' o# q& w* E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" m! D0 l/ V: c6 r  V
   set [trade-record-one-len] of self length [trade-record-one] of self. s/ `+ a) {" m" `4 j* w' z' c
   set trade-record-current( list (timer) (random money-upper-limit))
+ k  \$ s# h( k. i
) y! k9 D6 i. u! g* p. w问题的提示如下:0 A) X  C/ ~0 b1 i- Q2 v1 Z8 N- j* [

; [" p' E  |" N0 U5 l9 ]9 |error while turtle 50 running OF in procedure DO-BUSINESS4 z" G& N& \  e3 s$ d3 d- Y( y
  called by procedure GO& n0 p* O# t; e. y& q2 Y% x- u) {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 r" _5 O1 D$ R6 ^- L
(halted running of go). B: ~$ a# U/ J, x5 \8 v# D9 S& F

5 U4 F; \2 s) Y' U; N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~~% @4 U5 O3 i' X8 O
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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参与人数 1仿真币 +30 +2 收起 理由
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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
3 [2 V) o- a* o* ~" n' Aglobals[
1 y/ \0 C" i# `$ a0 ?3 ~xmax
8 I( L2 n2 c" A, u& V' a+ nymax5 C# }; k& n- L2 \2 C
global-reputation-list
1 i; B' W) M% T4 R6 N9 Z! x4 n) v' P
;;
每一个turtle的全局声誉都存在此LIST
( b* ?% K8 p+ p5 vcredibility-list; o! O' t. [# X3 G' B
;;
每一个turtle的评价可信度
, r4 }* B% P# C- A% B0 h9 k: T, V" Thonest-service
$ H* ]: f7 N6 {0 [  Xunhonest-service
; q! h! W" N% P5 \( K0 @* q# R' eoscillation
1 q7 U% A) f9 c5 {- E  Jrand-dynamic+ Z* T5 H# R! C6 O9 f: B# V9 e: d
]
, G1 i; O% ?# o  o/ l# r, e1 l6 b' E
turtles-own[4 i5 n1 |* |) Z9 O: T
trade-record-all
4 ?3 P) d' a& T;;a list of lists,
trade-record-one组成! n, _; m0 e5 i$ e: N. N
trade-record-one
7 u1 Z9 d- j; m1 r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 g9 P4 s7 t2 X

+ X0 l: P: m7 p) P5 A0 j;;[
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]]+ V8 z: z$ d. q* T6 x
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]
) K* f- O' D* V& p$ f  r0 Zcredibility-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
4 J2 ^( j; ^4 Eneighbor-total7 c$ |& T: L8 d1 `- J3 o* z+ n
;;
记录该turtle的邻居节点的数目
+ p0 u6 Q, [4 k! d: B: ^0 u; ?' S* H0 D1 Xtrade-time# T1 A& D+ `* R, v! [6 p% w6 B
;;
当前发生交易的turtle的交易时间
; r9 t7 w3 V2 O: k- Lappraise-give# i2 U! s% X8 ~" c$ J& |5 k) v
;;
当前发生交易时给出的评价
, ^5 M. j) S* R% ~8 j; n9 k! [% W4 Happraise-receive
+ c7 x$ x2 o" M1 Z4 ^' U;;
当前发生交易时收到的评价- ~: {; |! r. A/ \
appraise-time
: t1 s# Z: n8 o6 Z: t; `;;
当前发生交易时的评价时间
$ k' ~9 r; N  j. n$ g( H0 J" Z9 t, llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 ^* y; Y6 M% }5 _( o
trade-times-total
% [1 y) S' @7 h- V9 u  J;;
与当前turtle的交易总次数/ b9 E  b/ R# X9 N: \/ y; P0 z
trade-money-total
: l2 C, O: W# W) t- E3 N;;
与当前turtle的交易总金额
$ b0 J' ~) e/ L/ s* llocal-reputation
: E+ [+ j- `( N& w9 c5 ?; Dglobal-reputation+ K- f+ f" ?( _: f2 t
credibility& a: `. p4 [' @% H5 b: I0 R
;;
评价可信度,每次交易后都需要更新
3 v" [2 R  [9 zcredibility-all
1 K: g! m3 u) a2 M! Q: P;;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( Y4 p$ I$ S$ u! l5 ?
: E) u9 n" G( [
;;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$ O1 e+ q' t+ a  f8 t( @3 L7 R5 E
credibility-one
4 D5 p" V. P2 d( @; e* u/ d;;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people9 v0 k6 A) r8 m5 M4 i
global-proportion& j' |( e( m- e& `- u4 Q
customer
0 v3 e& C2 S$ `$ a" v8 rcustomer-no8 ]$ K- `1 N4 m( N' {- O
trust-ok1 y. e0 L! z. x. T$ E* P6 E- T
trade-record-one-len;;trade-record-one的长度
3 D' w. T& P9 F- @+ W, f: B]
' v: ^3 \7 K/ V4 T7 ]* O% P, G% n8 z: a5 \- T
;;setup procedure5 o* o# w. j  u  t& m" Y

1 E8 @! M5 P) rto setup
' I- w3 r9 m3 q7 x: V9 o
: h: c! l; ~8 \) Q3 ~6 ?0 @4 f, hca

, I# c1 o, d2 _' A' X& ~
' `. I4 ?7 e6 d* ~/ ninitialize-settings

+ q7 a9 |5 a- |7 d4 q8 O
7 r) f; G& _4 i% \! b8 v4 ]crt people [setup-turtles]

7 F3 n0 p' P% ^5 j, f) R/ H) e# D
8 Z0 n. O! a; p! P/ x. i% [reset-timer
& l0 m5 t) n7 L' y
" Y* K! D3 u' e+ g: R
poll-class
3 {* t8 v  f% x/ i0 L

3 N9 @% Z! n7 H8 G2 R+ o3 usetup-plots

8 w: }! x/ H. j% }
$ T6 {" Q1 ~$ |) ~3 edo-plots

. Y# f. V3 C* c6 Bend
' s; h9 m+ ~" v$ G8 t0 r- S' ]" I' S/ G( A2 E8 N
to initialize-settings
+ j0 M- x. V8 o3 J( R: ?( V; e8 E" |' X" Q0 Q* B/ [4 i- J: Y
set global-reputation-list []
7 ~5 k+ \0 k, V- G* I- C
; R# F; o1 c9 q
set credibility-list n-values people [0.5]

; J& E6 R( t4 E+ N& i* X7 |2 p. u% n# F% ~9 `) {* I- ~( @
set honest-service 0
9 ~  A$ y; r9 F! L) c" ^$ z" y
* ?+ F& d9 m4 `& I: G7 U
set unhonest-service 0

+ L' |- h2 H6 J$ E+ W8 m3 D& s. @$ z) e4 r
set oscillation 0

" J. g' W% ?4 r# c, ^8 z9 p, ?
0 g$ Z& E  m  J* J, Tset rand-dynamic 0
7 q* q$ w9 _* H5 z. a# t; a) M/ R0 c
end- f. j' R  m4 |$ u6 \  @3 q

$ F: F1 V9 \4 u, N3 Fto setup-turtles
4 e. ?+ m1 C" M- N. mset shape "person"
. S+ w; _* A7 \1 Q6 g1 g$ T& Wsetxy random-xcor random-ycor! G  B! x7 F  T3 n( l: O8 N: |
set trade-record-one []2 D) O$ Z9 Z! }' l3 a9 N
' Q, `" v5 G4 f: d7 B7 |" p, n
set trade-record-all n-values people [(list (? + 1) 0 0)] ! m# ]( t4 ?1 `2 z6 ]7 @

: Q# E+ ?" }$ [' M$ eset trade-record-current []
" c" i, p! t% i' ~set credibility-receive []
/ n( j, Z  B6 \, vset local-reputation 0.5% F( W8 j7 f* b
set neighbor-total 08 [; K( O8 f0 |# O6 F: W
set trade-times-total 0
% y0 N& i, }4 k9 T5 pset trade-money-total 0
* i) b2 K  h6 ~! Mset customer nobody
: C( }3 W% m  i7 D* ~- L( R0 i1 wset credibility-all n-values people [creat-credibility]
9 ~$ U: k% k( n$ |set credibility n-values people [-1]
9 A# d5 g& N  |4 bget-color
2 z4 A( B1 N3 A, J3 ]1 J5 @
" l5 Q/ a# v( e+ ~& D
end) F% I( X0 z3 ?/ l; u6 h

3 \' r0 N8 T5 m9 F" R& hto-report creat-credibility1 ?3 L' e- \: y3 U& F; s- P8 B
report n-values people [0.5]* i. `3 Y5 T5 T% i
end  u+ W2 x3 t3 H' m9 B, a

. w( u+ ~" Z4 t! x, y$ i# ~2 _to setup-plots: f8 Q2 L* y8 @

, X4 s' T8 L' {8 Sset xmax 30

' O8 r- l7 e$ G% w1 Y- `; T! g: `( o
set ymax 1.0

. ?# M8 T/ s% [% V/ G6 X5 w# }# B( S7 U% `$ m4 D
clear-all-plots
( h! m9 ~! R2 v$ {

- Q' y! l  X- d8 O: e, Ksetup-plot1

! ]5 M2 i5 V- I- ?5 G. X: N$ n( f) B
setup-plot2
0 [# L) w: m+ p( q

$ M/ b$ u- R- p6 O4 o1 jsetup-plot3

# e4 c$ M' n9 e9 kend1 a. z5 W1 k- W/ X- m% y

+ v8 M( M( X6 a7 k/ A;;run time procedures! R3 G9 W/ g) D+ y, G

7 ^% O- X: u/ `  X0 K, z4 z7 wto go( C2 A  N% i; M6 l; p
+ ?6 R  n5 w7 l! L  m% F
ask turtles [do-business]

2 F2 q' F/ `  aend
) @, f1 [, P  @8 o- e
0 o6 b) U8 N; S* _, Y. |to do-business 9 }8 r& A$ A8 B  D. n, m) @6 r7 q+ D
" Q4 C% @8 |# U. \/ @6 p
3 {3 N4 H, I1 ]0 G9 g4 _' r
rt random 360
7 D7 Q* k! K( F4 t, z

" x& |, _" Y3 A7 Y" _- J8 pfd 1
  h! n2 k2 e4 @' [. ~* k

6 Y* W5 K" h$ G8 |+ Bifelse(other turtles-here != nobody)[
5 @1 x5 P( j  B' N

3 y5 Q# B; H  X6 \+ Y8 P' N: o" _set customer one-of other turtles-here
# u2 ^0 k, ?- D, O' V# l: t. L

5 f- X7 n: C0 U2 e: x;; set [customer] of customer myself

/ n& ^- Z( a2 d
  O1 d  C2 a. z* r: p1 D6 sset [trade-record-one] of self item (([who] of customer) - 1)' w7 ~* S  W% ]; t' J/ S
[trade-record-all]of self
0 i7 u  h3 G2 p1 R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. A  J5 p  w3 V2 M% J7 O9 `7 t  G
' s$ j, f( k5 C) T3 H% Y4 ^3 n
set [trade-record-one] of customer item (([who] of self) - 1)" ?! N0 T* \2 D. Z$ }
[trade-record-all]of customer

) y. y+ q! G! X0 _8 j1 Y+ g9 m. h! ~: w. T
set [trade-record-one-len] of self length [trade-record-one] of self
/ O, {& f, r1 E. k* m

* w+ ]$ w" b" ^6 Xset trade-record-current( list (timer) (random money-upper-limit))

/ S" |  x5 S0 x0 _; ?7 W' S+ Q$ p. v- o8 H  F) F
ask self [do-trust]
( Y! b% c" v# N' K3 P;;
先求ij的信任度
0 ~% Y, [* X  P4 e1 q3 G
8 J6 [$ ]8 g) J! R2 F) h& nif ([trust-ok] of self): T/ `, W3 l4 }
;;
根据ij的信任度来决定是否与j进行交易[
$ f$ H$ a4 H( Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) r4 |1 O2 c4 i, F6 g: a
5 F/ z2 d+ k0 b3 R8 i" o
[
$ C  s- ~$ q) M) Z/ M

, W; U" a9 A' ldo-trade

8 M& Z  z% o8 D# B: E
, [) D7 I; w; S8 ^# yupdate-credibility-ijl

) t) U4 S9 Y* X9 v+ \. N+ W) R3 N9 Q) l) p: m
update-credibility-list
3 k# l! u* Z) j6 q# i: f
3 d9 j. K% C7 A! S! g0 a

  f/ N0 X& V7 {! Wupdate-global-reputation-list

, k3 s" c7 B( R5 y% |
& S% g# w% V' I# a7 dpoll-class

& j4 T) r5 b9 y; n& P  X+ G( F+ R& \7 ?
get-color

& g& \2 ?6 \7 y, I
/ j0 m) _2 u$ Y/ p+ c]]
. t1 }& W! {+ ?' h7 o2 _! `9 x
. a* G; L; P0 w# H$ ~6 O;;
如果所得的信任度满足条件,则进行交易
% |" _3 X4 \* \2 P  ^4 q) Y9 }" {9 [+ ~0 J9 k
[

- b$ C* u: P" [( u: I) _1 u& C5 H1 Y- w3 p) T0 n0 l
rt random 360
( l7 F3 n4 m/ L

. M" V/ i) n& v, u" q5 cfd 1

7 b: g" [! a' R' p- D+ u  A
, E5 b5 H( U  w$ P1 g1 ]]
6 C6 a5 i# r/ r% ?! Y* K
+ ?' _, F: [, t+ ]7 E; g4 k7 \
end

4 l0 _5 n: E9 a
5 l# k% }3 H* H- z7 {to do-trust 4 K# f8 ?% u; {, b4 ]
set trust-ok False) D5 S3 P- f8 d4 G$ N, ?

' V' g( ~4 o0 k  h9 |3 t
* L( M$ m' h' }# b0 H1 B# U
let max-trade-times 0
# c& v! I3 y" L9 v) F! zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. R; }& ?+ _7 a. i# R/ M
let max-trade-money 00 C9 `: }# \3 ~! a/ E0 X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ C6 J1 V: U9 k5 O# rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" T' q' t4 i. h6 r- a1 I$ |; P: \5 x+ o; a9 Z

2 v9 r: H9 H0 b) wget-global-proportion
% L; V3 w/ ?3 j# m' o- Y, @4 L9 }let trust-value
% K# ^' M* ~7 Mlocal-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 J. Y( h; K$ u( p  s- |) W  m
if(trust-value > trade-trust-value)% ~. v3 t9 a& I( ~3 L
[set trust-ok true]
$ Q( t" p# B* m' ^4 Aend  ~. q. O1 A0 E4 S# Y! U7 c* N! i

" ]6 y" J/ X9 A  t3 N5 hto get-global-proportion
; k/ k5 ^" x% Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& w$ i* ^2 s2 M1 A. w% q[set global-proportion 0]& u, w; k' t3 b3 c/ E) p
[let i 0; g  C8 i- l+ G1 }" y  m0 G
let sum-money 00 Q% Y" R0 H% h$ _( P% Y5 {) p# K, }
while[ i < people]
. g' c; f7 B. i: P* y, `[
; O6 j  \( P- U1 B- H& bif( length (item i
9 {; x' q( j( `% k0 q& Y/ [7 L: T! D: p5 B[trade-record-all] of customer) > 3 )

' C9 P2 ~/ b1 T7 _7 k[3 [) R- A: L! V' Y% f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 |, v. L- h; i+ ^) ]]3 e, _; q* ^3 w/ ^1 M/ x  \
]; C8 b1 s2 v# z/ L. s4 k
let j 0+ |/ V2 [4 m6 q0 c& ~$ y, S' D
let note 05 w8 _+ [2 \( S' g2 g  F
while[ j < people]1 O0 I5 m( d  \
[* c8 a) R) Y& v/ {
if( length (item i
4 L$ C& R$ h4 x$ |[trade-record-all] of customer) > 3 )

* F" Z: J+ q9 v- q[
' c. G7 o, d; difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* |* L$ u* V" m" [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 ^9 H' t1 ~! I0 T5 S' R8 n4 Z, F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- Y9 |# {  c. I0 m]" m' L2 N) I) G, C! ^
]
/ T0 V* W4 r# b/ J* wset global-proportion note
, y! x, o8 I! k  E# z# J3 ]]: Q# _% }* C* t: Q8 v0 @
end
; d3 p- v' X7 T$ v$ p9 {2 ^" D' q4 F2 B: L1 B$ M3 H
to do-trade
1 H! q5 j& z- k  F9 S, l;;
这个过程实际上是给双方作出评价的过程4 ?9 L. ~! {2 @2 ?' o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; [" o" l3 H' p2 m8 x4 w0 Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# I9 o. k" _4 M/ m
set trade-record-current lput(timer) trade-record-current
" d. W" l; _2 w0 S( v! Q& B;;
评价时间
6 E6 ?; h6 c' K8 Wask myself [; t# u" F! v# g
update-local-reputation
* q4 e7 v$ G+ W, }  O/ }* k. Lset trade-record-current lput([local-reputation] of myself) trade-record-current
! v3 }6 K. J$ M6 z# H- ]]: p. F: k1 n* k. p) w* X0 L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& q' e* B) t8 ]/ w
;;
将此次交易的记录加入到trade-record-one
5 M9 D1 K+ |* G: p9 ]5 M: Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" U0 Q7 z* \  v( @let note (item 2 trade-record-current )
- G4 ]( _& Q2 o$ F' x2 U" }! Kset trade-record-current% J, W6 x! J/ A% k+ u  e) R
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 D4 L- _% R9 I& W8 |, O$ x
set trade-record-current
5 G  O0 z+ G( a) J# a(replace-item 3 trade-record-current note)
# D& V  w! Y+ e/ L0 m4 B. W7 \( o. A

' N- w/ I0 c+ j* j- J$ o' D) W' q* xask customer [
, C1 O, q) y2 ]' lupdate-local-reputation
: `2 y0 E0 `- lset trade-record-current3 `3 k- P& }0 ~6 Q. g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 H/ \6 W7 P) O$ N: U/ |7 }7 e
]
. Z" K" Q9 j! g  J3 f# L0 `7 w0 R' a5 B0 ?& L: Y  D+ [7 ]% C

+ q; x0 m# q, U4 U/ n4 \* B, Y+ Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" O9 G, T2 [* M! h

) O, Z. T1 Y6 E% Z3 @7 @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" {$ S2 g# B6 ~& @. V0 S
;;
将此次交易的记录加入到customertrade-record-all
0 p: c$ Y% c) {5 [) ^* @; e8 Nend
$ n2 t7 p0 I' Y5 F' s" G7 z  I( V
' u  q3 O# I. \5 {- l3 Lto update-local-reputation
5 e, M& H5 Y( ^1 n3 d9 }set [trade-record-one-len] of myself length [trade-record-one] of myself1 L/ }! A' R7 ^6 m4 w, `
) l$ y! N  ?3 l
- l  d- L7 u6 W6 E* p
;;if [trade-record-one-len] of myself > 3

/ m" y- r4 g+ n/ W' M) dupdate-neighbor-total  |" a3 B, d& F! ~3 Z
;;
更新邻居节点的数目,在此进行
! R- M& V8 Z2 `2 a* \. B% Tlet i 3
5 p/ b  a0 s& K" B& z4 N# D5 Jlet sum-time 09 c4 y/ D: D4 {6 S8 j- I2 y
while[i < [trade-record-one-len] of myself]6 }0 q! J/ ^3 u9 d$ @$ C
[
, ?& [- \6 ~0 i  Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% b* D  w5 d1 Yset i/ L1 D! W6 ^9 U, N' b" ]
( i + 1)

) a2 C/ Y: J; V  Z/ C" J]0 a# F; E% ], B( p9 V
let j 3
# J* `: @. e' p3 l$ b# c* S3 Mlet sum-money 0$ @' p' t6 B' q
while[j < [trade-record-one-len] of myself]
* G0 K2 K2 q9 r% a! r; b; C1 ][
% Z' L9 s* T1 `. dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' D( j2 \8 T* t6 E+ u4 W: V
set j
8 z8 D# h* |# N/ |- X( j + 1)

) c7 ?8 h' O4 ?& B: G]
# c! Z* j6 E& f5 _- W; S! F- R( Mlet k 3: U' R4 H' U% Q# {" k" \
let power 0
) e+ q* @$ k" y3 Olet local 0
( S: M3 X7 ~8 a% m0 t, c7 Awhile [k <[trade-record-one-len] of myself]
4 \8 s# \, m- Q0 `8 d( K' h[- k# M0 s# B* l
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)
# E# h' Z4 k' O% ~set k (k + 1)
  a) ~0 n8 e, x% w]5 j- S. w: B' @3 C3 k& M
set [local-reputation] of myself (local)1 {' B4 E4 y# v1 K" _. ~3 u3 I
end2 X" y) O+ ^; ^$ Q
2 U3 I0 A6 |) k% _" \; x
to update-neighbor-total: u9 l( r. a; g$ d7 i; w6 P

& E( C, g2 t. n2 {5 w3 J5 F& mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], {3 j/ |: O3 J* Q$ X
. g7 n$ c) z: a, ]* p6 r) r2 B
$ V0 t- I' f1 c; ?4 C1 y6 L0 H8 Z
end
" Z3 u& K: a: k+ ^. r" D& O2 {' e5 u; J# T& E; n/ ?
to update-credibility-ijl 6 D5 F6 ^; ]8 @" B7 l1 z$ Q
! L# x) l9 y6 c$ p- {2 g$ `
;;
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。/ M, ~2 ?$ @. O* Y% Z  L; D. |
let l 0
' {7 R. q; G7 e/ E! h1 h& Twhile[ l < people ]
7 v  Q- _4 {5 D! z0 j: C;;
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8 F) m! w& b! q% u2 o
[0 \& p/ s8 W/ R0 z5 I6 A3 m+ H2 j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- Z3 H* Y2 C( }% O5 B% B# Z6 t
if (trade-record-one-j-l-len > 3)6 K* c$ h. f/ ~1 }0 p. \
[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
+ b; V+ R/ q* v7 i) ^% Flet i 3  {# i/ @8 b3 Z$ M  p& Z5 V
let sum-time 0
; T9 R1 e. Q' `# N8 j) J: Kwhile[i < trade-record-one-len]
- C4 M: k7 C5 L5 ~6 ^, m[
9 k* O$ h6 q; g; xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) `; e( ?" M+ c. p( i- }
set i  O5 W# {6 q1 k4 v. E) U
( i + 1)

+ ^  A3 J1 `' i' x# ^4 Y]8 F5 X" P  h- A  X1 e' e7 N
let credibility-i-j-l 0: q7 @4 u. V7 K5 L, k' p
;;i
评价(jjl的评价)
* |0 N# A6 o' a; o/ o, w4 X; Llet j 30 q& W8 p! A1 W4 r, f
let k 4/ x5 ]4 B# u7 `. A7 y
while[j < trade-record-one-len]
4 U" w' R, k! v( a* p7 b" m[8 y) K3 \+ J2 @
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# P" o  R$ N4 d+ P  t
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)% P$ S6 B+ Q: H
set j5 y" d. }4 W* L& z) O
( j + 1)

- Q  Y' _+ _& T0 w: b]: z- r, Z# e: n! h
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 ))9 |) n( [' v5 k! q) p
$ W: y. F3 T( [* b2 Y9 v" e$ Q
9 j% z# M, S- f$ t7 R2 L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: t* w* R: c. j) J) q/ R8 c9 h' g# l;;
及时更新il的评价质量的评价
) f9 B) ?7 Q8 E% T3 A! w% q$ Y1 f1 @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) p+ m1 n# l' n/ l% Y$ I
set l (l + 1)' {" O5 x" c) o$ U/ P. Y3 o
]
! ]' l$ u2 ]: o6 E* O* wend
0 b! n$ W- Z& E
8 r/ ~+ D1 K4 k6 Rto update-credibility-list
" ~9 K9 b2 z+ ?/ `, ulet i 0
1 a3 F* e& e& swhile[i < people]' f7 G$ M! t6 q8 ^2 H& o
[$ d/ W+ B$ m( l. i" y6 C- Q9 ~
let j 0
+ j) ^$ \) |8 L0 E+ ]- xlet note 0
, ]6 H* b# A" s; s$ hlet k 0
* d$ }8 X/ o$ H- n;;
计作出过评价的邻居节点的数目' \, p# q7 z  w; @4 e# B5 j9 ^
while[j < people]- C4 G! J$ N6 N* Q2 r1 x: g) ^
[
8 G" [. O" t% o: v9 Nif (item j( [credibility] of turtle (i + 1)) != -1)
* ?% c. P: K1 R& e;;
判断是否给本turtle的评价质量做出过评价的节点( _( ^  @& Y, \) Q4 ]
[set note (note + item j ([credibility]of turtle (i + 1)))
5 |4 U: a" p% ?5 D. m;;*(exp (-(people - 2)))/(people - 2))]
, O) v: s: e8 b; C2 r
set k (k + 1)' y/ e7 ~; I0 t  \" E) W8 P
]1 {6 d: L; ?0 Z) |% D! p' ^; N
set j (j + 1)
5 L' Q2 V0 `$ E  U3 }5 B0 C]
( t) H" ~9 q: ?4 ~' z' N1 P/ fset note (note *(exp (- (1 / k)))/ k)& \/ X. N( \7 N0 l8 `7 o
set credibility-list (replace-item i credibility-list note)
  v1 \; ]/ N( v2 Cset i (i + 1)* k/ a: Y8 i" O' L  B7 s/ H
]
* D9 \2 P7 h& g- }! V1 Jend
" k+ O; B  Q" H/ g  R2 t
/ h: P- m: P# o  @; Pto update-global-reputation-list, F7 B' Q! b# p7 o6 y
let j 0! t1 a6 x2 M# |" T9 }; x7 T& j
while[j < people]
7 }1 n& x$ \3 `# T% K' N[4 K% L8 b: m3 c5 v( k
let new 0* G9 ?& l3 {" v7 z" j, P
;;
暂存新的一个全局声誉
3 g. U6 g9 }8 B/ U' X3 x% R- C8 {let i 0
3 P0 ?* S1 r* Y- rlet sum-money 0$ _/ p' ~8 I8 N! y. W$ p& [
let credibility-money 0
5 ~. a# Q7 n$ K6 \7 t: Z' Hwhile [i < people]- I$ G) ~) f3 l1 |3 D: \
[7 }4 w9 Y- h$ }. {# w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# n! D5 M9 m: s4 z- P' H$ p
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 M) F8 A! X. L  dset i (i + 1)
% o$ O$ a2 A$ C1 l6 e]
  e% m6 C9 m. }7 t- ~% dlet k 04 Y" J8 `7 T4 U' x1 j% S" a+ \+ E
let new1 0, |. F; ?, G% y  C% y
while [k < people]( q. C5 U$ K8 r
[
2 N( }" p* O, ~8 C; Q$ Q9 {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)6 K6 ~8 O/ G1 E9 a3 I8 r
set k (k + 1)" ]; v1 H' k. S( ]7 E  d
]
2 Z: |: T4 Y$ M9 \1 ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 [8 R% W+ e$ e( e3 r- p
set global-reputation-list (replace-item j global-reputation-list new)
2 \: R( l0 s2 H  u. i* xset j (j + 1)# p# d: R' O" ]( j" [3 i6 Z
], h- g# A6 }5 i+ o0 c
end% }+ |7 X- Z) V% x4 T

* X. J# x4 c9 [. V
0 k2 C8 t& X+ u' p( n/ e) V
0 V! e8 W! M" ]to get-color
6 P+ v* C5 g, J5 a; Z* n& x
+ P( |9 Y0 g0 U! y6 j& Oset color blue
+ N- o$ G4 s# H! T
end
1 `) k! `& e( f  @9 a" s9 Z. }  R" T% R0 g: o
to poll-class# d9 \  ~4 d- u8 d# P
end/ u5 m/ ^# I$ L1 _% c

+ w* u: K7 w1 c, ]5 m; bto setup-plot14 A7 [1 j% e, O2 ], y
* j0 A8 F, w' Q7 J" ^+ Q4 j
set-current-plot "Trends-of-Local-reputation"

9 C4 M5 O+ I) g2 N8 b( Z! `* o' b* U1 d/ ~
set-plot-x-range 0 xmax
5 V$ L5 k+ Z+ Y5 H

" z: Q. N% }+ dset-plot-y-range 0.0 ymax
! a. k3 e" G& z0 ]
end
( E1 x  I0 [8 k$ @
' E  ^; k9 Q! qto setup-plot2
7 c! T/ n9 D  u$ b
' j% }$ H* O% L2 \3 ?set-current-plot "Trends-of-global-reputation"
1 M4 b5 r; j- `# u

8 |9 Z8 O0 v% r7 R: D# d  z3 Pset-plot-x-range 0 xmax

  T$ B. f. z* n4 {
7 s- L( ~* E/ t8 bset-plot-y-range 0.0 ymax

$ R1 d$ R( P! n3 G: j, C$ \end" q6 S' k2 w, }2 W

3 z+ m2 D6 @+ ^to setup-plot33 @% Q/ W1 i6 x# S

) W: h. Y5 b$ L( w8 q! W0 `set-current-plot "Trends-of-credibility"

' i9 J! N6 W0 ^2 G+ `* N) b/ E9 e+ d" B
set-plot-x-range 0 xmax

4 Y) H) t0 f# t$ h3 Q( c9 `6 Z# z2 D3 O. C6 h0 o1 O  a3 y+ A
set-plot-y-range 0.0 ymax

6 H: H; a6 ^/ z6 i- {end$ H2 C9 U4 x/ D0 T% z
/ y, O5 f1 u0 W5 M
to do-plots
- N. {+ s( i" x4 ^1 f3 W# f* h2 @set-current-plot "Trends-of-Local-reputation"+ o+ b" `+ z2 w* I% U  `6 G
set-current-plot-pen "Honest service". J2 J2 _; I% v8 [1 r) H( u
end7 y: x3 q. p/ x" c1 z: U

8 o/ q- D; c1 t+ n: X1 c+ J3 [/ C# @[ 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.' y- z( f" @" H

2 ^7 I) {& ?2 u- `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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